Updated on 2024/01/26

写真a

 
Kyoko (Tsukiyama-)Kohara
 
Organization
Research Field in Veterinary Medicine, Agriculture, Fisheries and Veterinary Medicine Area Joint faculty of Veterinary Medicine Transboundary Animal Disease Research Center Professor
Title
Professor

Degree

  • Medicine ( 2014.9   Kumamoto University )

  • Agriculture ( 1989.6   The University of Tokyo )

Research Interests

  • tupaia

  • Influenza virus

  • Hepatitis C virus

  • Laboratory Animal Research

Research Areas

  • Life Science / Molecular biology

  • Life Science / Virology

  • Life Science / Veterinary medical science

  • Others / Others  / ウイルス

Research History

  • Kagoshima University   Professor

    2012.4

  • Kagoshima University   Joint Faculty of Veterinary Medicine   Professor

    2011.10

  • - Lecturer, Institute of Medical Science, The University of Tokyo

    2000

Professional Memberships

  • 日本獣医学会

    2015.10

  • 日本分子生物学会

    2015.10

  • 日本癌学会

    2015.10

  • 日本ウイルス学会

    2015.10

  • 日本ウイルス学会

  • 日本分子生物学会

  • 日本獣医学会

  • 日本癌学会

▼display all

Committee Memberships

  • 日本獣医学会   評議委員  

    2019.10   

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    Committee type:Other

  • 日本ウイルス学会   九州支部会 運営委員  

    2019.10   

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    Committee type:Other

  • 日本獣医学会   評議委員  

    2019.10   

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    Committee type:Other

 

Papers

  • Ushirozako G, Murayama N, Tsukiyama-Kohara K, Yamazaki H, Uno Y .  Novel tree shrew cytochrome P450 2Ds ( CYP2D8a and CYP2D8b ) are functional drug-metabolizing enzymes that metabolize bufuralol and dextromethorphan. .  Drug metabolism and disposition: the biological fate of chemicals   2024.1Novel tree shrew cytochrome P450 2Ds ( CYP2D8a and CYP2D8b ) are functional drug-metabolizing enzymes that metabolize bufuralol and dextromethorphan.Reviewed International journal

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    Authorship:Lead author, Last author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1124/dmd.123.001603

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  • Uno Y, Makiguchi M, Ushirozako G, Tsukiyama-Kohara K, Shimizu M, Yamazaki H .  Molecular and functional characterization of flavin-containing monooxygenases (FMO1-6) in tree shrews. .  Comparative biochemistry and physiology. Toxicology & pharmacology : CBP   109835   2024.1Molecular and functional characterization of flavin-containing monooxygenases (FMO1-6) in tree shrews.Reviewed International journal

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    DOI: 10.1016/j.cbpc.2024.109835

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  • Hasan MN, Rahman MM, Husna AA, Arif M, Iwanaga T, Tsukiyama-Kohara K, Jasineviciute I, Kato D, Nakagawa T, Miura N .  Elevated expression of miR-301a and its functional roles in canine oral melanoma. .  Veterinary and comparative oncology   2023.12Elevated expression of miR-301a and its functional roles in canine oral melanoma.Reviewed International journal

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    Authorship:Lead author, Last author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1111/vco.12954

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  • Uno Y, Minami Y, Tsukiyama-Kohara K, Murayama N, Yamazaki H .  Identification of cytochrome P450 2C18 and 2C76 in tree shrews: P450 2C18 effectively oxidizes typical human P450 2C9/2C19 chiral substrates warfarin and omeprazole with less stereoselectivity. .  Biochemical pharmacology   115990   2023.12Identification of cytochrome P450 2C18 and 2C76 in tree shrews: P450 2C18 effectively oxidizes typical human P450 2C9/2C19 chiral substrates warfarin and omeprazole with less stereoselectivity.Reviewed International journal

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    DOI: 10.1016/j.bcp.2023.115990

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  • Ngwe Tun MM, Nwe KM, Balingit JC, Takamatsu Y, Inoue S, Pandey BD, Urano T, Kohara M, Tsukiyama-Kohara K, Morita K .  A Novel, Comprehensive A129 Mouse Model for Investigating Dengue Vaccines and Evaluating Pathogenesis. .  Vaccines11 ( 12 )   2023.12A Novel, Comprehensive A129 Mouse Model for Investigating Dengue Vaccines and Evaluating Pathogenesis.Reviewed International journal

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    DOI: 10.3390/vaccines11121857

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  • Kayesh MEH, Kohara M, Tsukiyama-Kohara K .  Effects of neddylation on viral infection: an overview. .  Archives of virology169 ( 1 ) 6   2023.12Effects of neddylation on viral infection: an overview.Reviewed International journal

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    DOI: 10.1007/s00705-023-05930-3

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  • Akter L, Hashem MA, Rakib TM, Rashid MHO, Hossain KA, Akhter R, Utsunomiya M, Kitab B, Hifumi T, Miyoshi N, Maetani F, Tsukiyama-Kohara K .  Investigation of koala retrovirus in captive koalas with pneumonia and comparative analysis of subtype distribution. .  Archives of virology168 ( 12 ) 298   2023.11Investigation of koala retrovirus in captive koalas with pneumonia and comparative analysis of subtype distribution.Reviewed International journal

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    DOI: 10.1007/s00705-023-05928-x

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  • Ushirozako G, Murayama N, Tsukiyama-Kohara K, Yamazaki H, Uno Y .  Tree shrew cytochrome P450 2E1 is a functional enzyme that metabolises chlorzoxazone and p-nitrophenol. .  Xenobiotica; the fate of foreign compounds in biological systems   1 - 11   2023.11Tree shrew cytochrome P450 2E1 is a functional enzyme that metabolises chlorzoxazone and p-nitrophenol.Reviewed International journal

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    DOI: 10.1080/00498254.2023.2280996

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  • Hossain KA, Akhter R, Rashid MHO, Akter L, Utsunomiya M, Kitab B, Mm N, Hishiki T, Kohara M, Morita K, Tsukiyama-Kohara K .  Suppression of dengue virus replication by the French maritime pine extract Pycnogenol®. .  Virus research   199244   2023.10Suppression of dengue virus replication by the French maritime pine extract Pycnogenol®.Reviewed International journal

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    DOI: 10.1016/j.virusres.2023.199244

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  • Okamoto R, Ito N, Ide Y, Kitab B, Sakoda Y, Tsukiyama-Kohara K .  Development of short hairpin RNA expression vectors targeting the internal ribosomal entry site of the classical swine fever virus genomic RNA. .  BMC biotechnology23 ( 1 ) 37   2023.9Development of short hairpin RNA expression vectors targeting the internal ribosomal entry site of the classical swine fever virus genomic RNA.Reviewed International journal

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    Authorship:Lead author, Last author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1186/s12896-023-00805-6

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  • Kenzaburo Yamaji, Sadahiro Iwabuchi, Yuko Tokunaga, Shinichi Hashimoto, Daisuke Yamane, Sakiko Toyama, Risa Kono, Bouchra Kitab, Kyoko Tsukiyama-Kohara*, Yosuke Osawa, Yukiko Hayashi, Tsunekazu Hishima, Chise Tateno, Kiminori Kimura, Takeshi Okanoue, Michinori Kohara .  Molecular insights of a CBP/β-catenin-signaling inhibitor on nonalcoholic steatohepatitis-induced liver fibrosis and disorder .  Biomedicine & Pharmacotherapy166   115379   2023.8Molecular insights of a CBP/β-catenin-signaling inhibitor on nonalcoholic steatohepatitis-induced liver fibrosis and disorderReviewed International coauthorship

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    DOI: doi.org/10.1016/j.biopha.2023.115379

  • Ushirozako G, Noda Y, Murayama N, Kawaguchi H, Tsukiyama-Kohara K, Yamazaki H, Uno Y .  Newly Identified Tree Shrew Cytochrome P450 2A13 (CYP2A13) is Expressed in Liver and Lung and Encodes a Functional Drug-Metabolizing Enzyme Similar to Dog CYP2A13 and Pig CYP2A19. .  Drug metabolism and disposition: the biological fate of chemicals   2023.5Newly Identified Tree Shrew Cytochrome P450 2A13 (CYP2A13) is Expressed in Liver and Lung and Encodes a Functional Drug-Metabolizing Enzyme Similar to Dog CYP2A13 and Pig CYP2A19.Reviewed International journal

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    DOI: 10.1124/dmd.122.001152

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  • Uno Y, Jikuya S, Noda Y, Oguchi A, Murayama N, Kawaguchi H, Tsukiyama-Kohara K, Yamazaki H .  Newly identified cytochrome P450 3A genes of tree shrews and pigs are expressed and encode functional enzymes. .  Comparative biochemistry and physiology. Toxicology & pharmacology : CBP   109579   2023.5Newly identified cytochrome P450 3A genes of tree shrews and pigs are expressed and encode functional enzymes.Reviewed International journal

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    DOI: 10.1016/j.cbpc.2023.109579

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  • Yoshida O, Akbar SMF, Imai Y, Sanada T, Tsukiyama-Kohara K, Miyazaki T, Kamishita T, Miyake T, Tokumoto Y, Hikita H, Tsuge M, Shimizu M, Al Mahtab M, Aguilar JC, Guillen G, Kohara M, Hiasa Y .  Intranasal therapeutic vaccine containing HBsAg and HBcAg for patients with chronic hepatitis B; 18 months follow-up results of phase IIa clinical study. .  Hepatology research : the official journal of the Japan Society of Hepatology   2023.3Intranasal therapeutic vaccine containing HBsAg and HBcAg for patients with chronic hepatitis B; 18 months follow-up results of phase IIa clinical study.Reviewed International journal

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    Authorship:Lead author, Last author, Corresponding author   Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1111/hepr.13851

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  • Uno Y, Noda Y, Murayama N, Tsukiyama-Kohara K, Yamazaki H .  Novel cytochrome P450 1 (CYP1) genes in tree shrews are expressed and encode functional drug-metabolizing enzymes. .  Comparative biochemistry and physiology. Toxicology & pharmacology : CBP265   109534   2023.3Novel cytochrome P450 1 (CYP1) genes in tree shrews are expressed and encode functional drug-metabolizing enzymes.Reviewed International journal

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    DOI: 10.1016/j.cbpc.2022.109534

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  • Kitab B, Tsukiyama-Kohara K .  Regulatory Role of Ribonucleotide Reductase Subunit M2 in Hepatocyte Growth and Pathogenesis of Hepatitis C Virus. .  International journal of molecular sciences24 ( 3 )   2023.1Regulatory Role of Ribonucleotide Reductase Subunit M2 in Hepatocyte Growth and Pathogenesis of Hepatitis C Virus.Reviewed International journal

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    DOI: 10.3390/ijms24032619

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  • Kayesh MEH, Khalil I, Kohara M, Tsukiyama-Kohara K .  Increasing Dengue Burden and Severe Dengue Risk in Bangladesh: An Overview. .  Tropical medicine and infectious disease8 ( 1 )   2023.1Increasing Dengue Burden and Severe Dengue Risk in Bangladesh: An Overview.Reviewed International journal

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    DOI: 10.3390/tropicalmed8010032

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  • Kayesh MEH, Kohara M, Tsukiyama-Kohara K .  TLR agonists as vaccine adjuvants in the prevention of viral infections: an overview. .  Frontiers in microbiology14   1249718   2023TLR agonists as vaccine adjuvants in the prevention of viral infections: an overview.Reviewed International journal

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    DOI: 10.3389/fmicb.2023.1249718

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  • Kayesh MEH, Kohara M, Tsukiyama-Kohara K .  Epidemiology and Risk Factors for Acute Viral Hepatitis in Bangladesh: An Overview. .  Microorganisms10 ( 11 )   2022.11Epidemiology and Risk Factors for Acute Viral Hepatitis in Bangladesh: An Overview.Reviewed International journal

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    DOI: 10.3390/microorganisms10112266

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  • Uno Y, Ushirozako G, Uehara S, Murayama N, Fujiki Y, Kawaguchi H, Tsukiyama-Kohara K, Yamazaki H .  Newly identified tree shrew cytochrome P450 2B6 (CYP2B6) and pig CYP2B6b are functional drug-metabolising enzymes. .  Xenobiotica; the fate of foreign compounds in biological systems   1 - 10   2022.11Newly identified tree shrew cytochrome P450 2B6 (CYP2B6) and pig CYP2B6b are functional drug-metabolising enzymes.Reviewed International journal

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    DOI: 10.1080/00498254.2022.2141153

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  • Kayesh MEH, Hashem MA, Maetani F, Goto A, Nagata N, Kasori A, Imanishi T, Tsukiyama-Kohara K .  Molecular Insights into Innate Immune Response in Captive Koala Peripheral Blood Mononuclear Cells Co-Infected with Multiple Koala Retrovirus Subtypes. .  Pathogens (Basel, Switzerland)11 ( 8 )   2022.8Molecular Insights into Innate Immune Response in Captive Koala Peripheral Blood Mononuclear Cells Co-Infected with Multiple Koala Retrovirus Subtypes.Reviewed International journal

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    DOI: 10.3390/pathogens11080911

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  • Characterization of host factors associated with the internal ribosomal entry sites of foot-and-mouth disease and classical swine fever viruses. .    12 ( 1 ) 6709   2022.4Characterization of host factors associated with the internal ribosomal entry sites of foot-and-mouth disease and classical swine fever viruses.Reviewed International coauthorship

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    DOI: 10.1038/s41598-022-10437-z.PMID

  • Kayesh MEH, Kohara M, Tsukiyama-Kohara K .  An Overview of Recent Insights into the Response of TLR to SARS-CoV-2 Infection and the Potential of TLR Agonists as SARS-CoV-2 Vaccine Adjuvants. .  Viruses13 ( 11 )   2021.11An Overview of Recent Insights into the Response of TLR to SARS-CoV-2 Infection and the Potential of TLR Agonists as SARS-CoV-2 Vaccine Adjuvants.Reviewed International journal

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    DOI: 10.3390/v13112302

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  • Kayesh MEH, Sanada T, Kohara M, Tsukiyama-Kohara K .  Tree Shrew as an Emerging Small Animal Model for Human Viral Infection: A Recent Overview. .  Viruses13 ( 8 )   2021.8Tree Shrew as an Emerging Small Animal Model for Human Viral Infection: A Recent Overview.Reviewed International journal

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    DOI: 10.3390/v13081641

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  • Hashem MA, Kayesh MEH, Maetani F, Eiei T, Mochizuki K, Ochiai S, Ito A, Ito N, Sakurai H, Asai T, Tsukiyama-Kohara K .  Koala retrovirus (KoRV) subtypes and their impact on captive koala (Phascolarctos cinereus) health. .  Archives of virology166 ( 7 ) 1893 - 1901   2021.7Koala retrovirus (KoRV) subtypes and their impact on captive koala (Phascolarctos cinereus) health.Reviewed International journal

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    DOI: 10.1007/s00705-021-05078-y

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  • Makoto Saito1,*, Yasushi Itoh2,*, Fumihiko Yasui1,*, Tsubasa Munakata1, Daisuke Yamane1, Makoto Ozawa3, Risa Ito4, Takayuki Katoh4, Hirohito Ishigaki2, Misako Nakayama2, Shintaro Shichinohe2, Kenzaburo Yamaji1, Naoki Yamamoto1, Ai Ikejiri1, Tomoko Honda1, Takahiro Sanada1, Yoshihiro Sakoda5, Hiroshi Kida6, Le Thi Quynh Mai7, Yoshihiro Kawaoka8, Kazumasa Ogasawara2, Kyoko Tsukiyama-Kohara3,†, Hiroaki Suga4,†, and Michinori Kohara .  Targeted macrocycles hamper hemagglutinin adsorption and fusion, and have antiviral effects in murine and macaque models of influenza .  Nature Communications12 ( 1 ) 2654   2021.5Targeted macrocycles hamper hemagglutinin adsorption and fusion, and have antiviral effects in murine and macaque models of influenzaReviewed International coauthorship

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    DOI: 10.1038/s41467-021-2

  • Abounouh K. .  Blocking neddylation elicits antiviral effect against hepatitis B virus replication .  Molecular Biology Reports   2021Reviewed International journal

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    Authorship:Lead author, Last author, Corresponding author   Language:Japanese   Publishing type:Research paper (scientific journal)   Publisher:Molecular Biology Reports  

    DOI: 10.1007/s11033-021-06886-w

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  • Kayesh M.E.H. .  Mammalian animal models for dengue virus infection: a recent overview .  Archives of Virology167 ( 1 ) 31 - 44   2021Reviewed International journal

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    Authorship:Lead author, Last author, Corresponding author   Language:Japanese   Publishing type:Research paper (scientific journal)   Publisher:Archives of Virology  

    DOI: 10.1007/s00705-021-05298-2

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  • Takagi A, Amako Y, Yamane D, Kitab B, Tokunaga Y, El-Gohary A, Kohara M, Tsukiyama-Kohara K .  Longer Poly(U) Stretches in the 3'UTR Are Essential for Replication of the Hepatitis C Virus Genotype 4a Clone in <i>in vitro</i> and <i>in vivo</i>. .  Frontiers in microbiology12   764816   2021Longer Poly(U) Stretches in the 3'UTR Are Essential for Replication of the Hepatitis C Virus Genotype 4a Clone in <i>in vitro</i> and <i>in vivo</i>.Reviewed International journal

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    DOI: 10.3389/fmicb.2021.764816

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  • Mohammad Enamul Hoque Kayesh, Michinori Kohara, Kyoko Tsukiyama-Kohara .  Toll-like Receptor Response to Human Immunodeficiency Virus Type 1 or Co-Infection with Hepatitis B or C Virus: An Overview. .  International journal of molecular sciences24 ( 11 )   2023.6Toll-like Receptor Response to Human Immunodeficiency Virus Type 1 or Co-Infection with Hepatitis B or C Virus: An Overview.Reviewed International journal

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    Toll-like receptors (TLRs) are evolutionarily conserved pattern recognition receptors that play important roles in the early detection of pathogen-associated molecular patterns and shaping innate and adaptive immune responses, which may influence the consequences of infection. Similarly to other viral infections, human immunodeficiency virus type 1 (HIV-1) also modulates the host TLR response; therefore, a proper understanding of the response induced by human HIV-1 or co-infection with hepatitis B virus (HBV) or hepatitis C virus (HCV), due to the common mode of transmission of these viruses, is essential for understanding HIV-1 pathogenesis during mono- or co-infection with HBV or HCV, as well as for HIV-1 cure strategies. In this review, we discuss the host TLR response during HIV-1 infection and the innate immune evasion mechanisms adopted by HIV-1 for infection establishment. We also examine changes in the host TLR response during HIV-1 co-infection with HBV or HCV; however, this type of study is extremely scarce. Moreover, we discuss studies investigating TLR agonists as latency-reverting agents and immune stimulators towards new strategies for curing HIV. This understanding will help develop a new strategy for curing HIV-1 mono-infection or co-infection with HBV or HCV.

    DOI: 10.3390/ijms24119624

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  • Mohammad Enamul Hoque Kayesh, Md Abul Hashem, Takahiro Sanada, Bouchra Kitab, Md Haroon Or Rashid, Lipi Akter, Sayeh Ezzikouri, Shuko Murakami, Shintaro Ogawa, Yasuhito Tanaka, Michinori Kohara and Kyoko Tsukiyama-Kohara .  Characterization of innate immune response to hepatitis B virus genotype F acute infection in tree shrew (Tupaia belangeri) model .  Frontiers in Virology2   926831   2022.8Reviewed International coauthorship International journal

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    Hepatitis B virus (HBV) infection is a global public health problem. The clinical outcomes of HBV infections are influenced by host as well as viral factors, including viral genotypes and subgenotypes. The interplay between HBV and host innate immunity remains unclear because of the lack of a suitable small animal model. Tree shrews (Tupaia belangeri) have been utilized as a useful animal model for hepatitis viruses such as hepatitis B and C viruses. In this study, we characterized acute infections by HBV genotype F (HBV-F) wild type (Wt) and mutant type (Mt) viruses in adult tree shrews. Serum alanine aminotransferase levels were measured before and post- infection 7 and 14 dpi. Both HBV-F-Wt and Mt were detected in the HBV-F-infected tree shrew serum and liver tissue at 7 and 14 dpi. We examined the intrahepatic expression patterns of Toll-like receptors (TLRs) (TLR1–9 mRNAs), cGAS, several transcription factors such as STAT1, STAT2, IRF7, HNF4, PD-L1, and cytokines, including IFN-β, IFN-γ, IL-6, and TNF-α in HBV-F Wt/Mt-infected tree shrews. When compared with uninfected animal group, significant suppression of TLR8 in HBV-F-Wt infected animals and significant suppression of PD-L1 in both HBV-F-Wt and Mt infected animals were observed. Thus, tree shrew can be a useful animal model to characterize HBV-F pathogenesis.

    DOI: 10.3389/fviro.2022.926831

  • Md Abul Hashem, Mohammad Enamul Hoque Kayesh, Fumie Maetani, Atsushi Goto, Noriko Nagata, Aki Kasori, Tetsuya Imanishi, Kyoko Tsukiyama-Kohara .  Subtype distribution and expression of the koala retrovirus in the Japanese zoo koala population. .  Infection, genetics and evolution : journal of molecular epidemiology and evolutionary genetics in infectious diseases102   105297 - 105297   2022.8Reviewed International journal

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    We investigated the proviral copies and RNA expression in koala retrovirus (KoRV)-infected koalas. To ascertain any variation in viral load by institution, age, sex, or body condition score, we quantified KoRV proviral DNA and RNA loads in captive koalas (n = 37) reared in Japanese zoos. All koalas were positive for KoRV genes (pol, LTRs, and env of KoRV-A) in genomic DNA (gDNA), and 91.89% were positive for the pol gene in RNA. In contrast, the distribution rates of KoRV-B, KoRV-C, KoRV-D, and KoRV-F env genes in gDNA were 94.59%, 27.03%, 67.57%, and 54.05%, respectively. A wide inter-individual variation and/or a significant inter-institutional difference in proviral DNA (p < 0.0001) and RNA (p < 0.001) amounts (copies/103 koala β-actin copies) were observed in Awaji Farm England Hill Zoo koalas, which were obtained from southern koala populations, suggesting exogenous incorporation of KoRV in these koalas. Significant (p < 0.05) age differences were noted in KoRV RNA load (p < 0.05) and median total RNA load (p < 0.001), with loads higher in younger koalas (joeys and juveniles). Thus, the current study provides the distribution of KoRV subtypes in Japanese zoo koala populations and identifies several additional risk factors (sex, age, and body condition) associated with KoRV expression.

    DOI: 10.1016/j.meegid.2022.105297

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  • Reverse vaccinology-based prediction of a multi-epitope SARS-CoV-2 vaccine and its tailoring to new coronavirus variants. .      2022.5Reverse vaccinology-based prediction of a multi-epitope SARS-CoV-2 vaccine and its tailoring to new coronavirus variants.Reviewed International coauthorship

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    DOI: 10.1080/07391102.2022.2075468.

  • Kayesh MEH, Kohara M, Tsukiyama-Kohara K. .  Toll-like Receptor Response to Hepatitis C Virus Infection: A Recent Overview. .  Int J Mol Sci.23 ( 10 ) 5475   2022.5Toll-like Receptor Response to Hepatitis C Virus Infection: A Recent Overview.Reviewed International coauthorship

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    DOI: 10.3390/ijms23105475.

  • Mohammad Enamul Hoque Kayesh, Michinori Kohara, Kyoko Tsukiyama-Kohara .  Toll-like Receptor Response to Hepatitis C Virus Infection: A Recent Overview. .  International journal of molecular sciences23 ( 10 )   2022.5Reviewed International journal

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    Hepatitis C virus (HCV) infection remains a major global health burden, causing chronic hepatitis, cirrhosis, and hepatocellular carcinoma. Toll-like receptors (TLRs) are evolutionarily conserved pattern recognition receptors that detect pathogen-associated molecular patterns and activate downstream signaling to induce proinflammatory cytokine and chemokine production. An increasing number of studies have suggested the importance of TLR responses in the outcome of HCV infection. However, the exact role of innate immune responses, including TLR response, in controlling chronic HCV infection remains to be established. A proper understanding of the TLR response in HCV infection is essential for devising new therapeutic approaches against HCV infection. In this review, we discuss the progress made in our understanding of the host innate immune response to HCV infection, with a particular focus on the TLR response. In addition, we discuss the mechanisms adopted by HCV to avoid immune surveillance mediated by TLRs.

    DOI: 10.3390/ijms23105475

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  • Wahiba Ezzemani, Anass Kettani, Subrahmanyam Sappati, Kavya Kondaka, Hicham El Ossmani, Kyoko Tsukiyama-Kohara, Haya Altawalah, Rachid Saile, Michinori Kohara, Soumaya Benjelloun, Sayeh Ezzikouri .  Reverse vaccinology-based prediction of a multi-epitope SARS-CoV-2 vaccine and its tailoring to new coronavirus variants. .  Journal of biomolecular structure & dynamics   1 - 22   2022.5Reviewed International journal

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    The genome feature of SARS-CoV-2 leads the virus to mutate and creates new variants of concern. Tackling viral mutations is also an important challenge for the development of a new vaccine. Accordingly, in the present study, we undertook to identify B- and T-cell epitopes with immunogenic potential for eliciting responses to SARS-CoV-2, using computational approaches and its tailoring to coronavirus variants. A total of 47 novel epitopes were identified as immunogenic triggering immune responses and no toxic after investigation with in silico tools. Furthermore, we found these peptide vaccine candidates showed a significant binding affinity for MHC I and MHC II alleles in molecular docking investigations. We consider them to be promising targets for developing peptide-based vaccines against SARS-CoV-2. Subsequently, we designed two efficient multi-epitopes vaccines against the SARS-CoV-2, the first one based on potent MHC class I and class II T-cell epitopes of S (FPNITNLCPF-NYNYLYRLFR-MFVFLVLLPLVSSQC), M (MWLSYFIASF-GLMWLSYFIASFRLF), E (LTALRLCAY-LLFLAFVVFLLVTLA), and N (SPRWYFYYL-AQFAPSASAFFGMSR). The second candidate is the result of the tailoring of the first designed vaccine according to three classes of SARS-CoV-2 variants. Molecular docking showed that the protein-protein binding interactions between the vaccines construct and TLR2-TLR4 immune receptors are stable complexes. These findings confirmed that the final multi-epitope vaccine could be easily adapted to new viral variants. Our study offers a shortlist of promising epitopes that can accelerate the development of an effective and safe vaccine against the virus and its adaptation to new variants.Communicated by Ramaswamy H. Sarma.

    DOI: 10.1080/07391102.2022.2075468

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  • Hashem MA, Kayesh MEH, Maetani F, Goto A, Nagata N, Kasori A, Imanishi T, Tsukiyama-Kohara K .  Subtype distribution and expression of the koala retrovirus in the Japanese zoo koala population. .  Infect Genet Evol.   105297   2022.5Subtype distribution and expression of the koala retrovirus in the Japanese zoo koala population.Reviewed International coauthorship

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    DOI: 10.1016/j.meegid.2022.105297.

  • Yutaro Ide, Bouchra Kitab, Nobumasa Ito, Riai Okamoto, Yui Tamura, Takafumi Matsui, Yoshihiro Sakoda, Kyoko Tsukiyama-Kohara .  Characterization of host factors associated with the internal ribosomal entry sites of foot-and-mouth disease and classical swine fever viruses. .  Scientific reports12 ( 1 ) 6709 - 6709   2022.4Reviewed International journal

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    Foot-and-mouth disease virus (FMDV) and classical swine fever virus (CSFV) possess positive-sense single-stranded RNA genomes and an internal ribosomal entry site (IRES) element within their 5'-untranslated regions. To investigate the common host factors associated with these IRESs, we established cell lines expressing a bicistronic luciferase reporter plasmid containing an FMDV-IRES or CSFV-IRES element between the Renilla and firefly luciferase genes. First, we treated FMDV-IRES cells with the French maritime pine extract, Pycnogenol (PYC), and examined its suppressive effect on FMDV-IRES activity, as PYC has been reported to have antiviral properties. Next, we performed microarray analysis to identify the host factors that modified their expression upon treatment with PYC, and confirmed their function using specific siRNAs. We found that polycystic kidney disease 1-like 3 (PKD1L3) and ubiquitin-specific peptidase 31 (USP31) were associated with FMDV-IRES activity. Moreover, silencing of these factors significantly suppressed CSFV-IRES activity. Thus, PKD1L3 and USP31 are host factors associated with the functions of FMDV- and CSFV-IRES elements.

    DOI: 10.1038/s41598-022-10437-z

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  • Mohammad Enamul Hoque Kayesh, Md Abul Hashem, Michinori Kohara, Kyoko Tsukiyama-Kohara .  In vivo Delivery Tools for Clustered Regularly Interspaced Short Palindromic Repeat/Associated Protein 9-Mediated Inhibition of Hepatitis B Virus Infection: An Update. .  Frontiers in microbiology13   953218 - 953218   2022Reviewed International journal

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    Chronic hepatitis B virus (HBV) infection remains a major global health problem despite the availability of an effective prophylactic HBV vaccine. Current antiviral therapies are unable to fully cure chronic hepatitis B (CHB) because of the persistent nature of covalently closed circular DNA (cccDNA), a replicative template for HBV, which necessitates the development of alternative therapeutic approaches. The CRISPR/Cas system, a newly emerging genome editing tool, holds great promise for genome editing and gene therapy. Several in vitro and/or in vivo studies have demonstrated the effectiveness of HBV-specific clustered regularly interspaced short palindromic repeat (CRISPR)/associated protein 9 (CRISPR/Cas9) systems in cleaving HBV DNA and cccDNA. Although recent advances in CRISPR/Cas technology enhance its prospects for clinical application against HBV infection, in vivo delivery of the CRISPR/Cas9 system at targets sites remains a major challenge that needs to be resolved before its clinical application in gene therapy for CHB. In the present review, we discuss CRISPR/Cas9 delivery tools for targeting HBV infection, with a focus on the development of adeno-associated virus vectors and lipid nanoparticle (LNP)-based CRISPR/Cas ribonucleoprotein (RNP) delivery to treat CHB. In addition, we discuss the importance of delivery tools in the enhancement of the antiviral efficacy of CRISPR/Cas9 against HBV infection.

    DOI: 10.3389/fmicb.2022.953218

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  • Mohammad Enamul Hoque Kayesh, Michinori Kohara, Kyoko Tsukiyama-Kohara .  Toll-Like Receptor Response to Hepatitis B Virus Infection and Potential of TLR Agonists as Immunomodulators for Treating Chronic Hepatitis B: An Overview. .  International journal of molecular sciences22 ( 19 )   2021.9Reviewed International journal

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    Chronic hepatitis B virus (HBV) infection remains a major global health problem. The immunopathology of the disease, especially the interplay between HBV and host innate immunity, is poorly understood. Moreover, inconsistent literature on HBV and host innate immunity has led to controversies. However, recently, there has been an increase in the number of studies that have highlighted the link between innate immune responses, including Toll-like receptors (TLRs), and chronic HBV infection. TLRs are the key sensing molecules that detect pathogen-associated molecular patterns and regulate the induction of pro- and anti-inflammatory cytokines, thereby shaping the adaptive immunity. The suppression of TLR response has been reported in patients with chronic hepatitis B (CHB), as well as in other models, including tree shrews, suggesting an association of TLR response in HBV chronicity. Additionally, TLR agonists have been reported to improve the host innate immune response against HBV infection, highlighting the potential of these agonists as immunomodulators for enhancing CHB treatment. In this study, we discuss the current understanding of host innate immune responses during HBV infection, particularly focusing on the TLR response and TLR agonists as immunomodulators.

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  • Islam Abbadi, Mustapha Lkhider, Bouchra Kitab, Khalid Jabboua, Imane Zaidane, Asmaa Haddaji, Sabrine Nacer, Aya Matsuu, Pascal Pineau, Kyoko Tsukiyama-Kohara, Soumaya Benjelloun, Sayeh Ezzikouri .  Non-primate hepacivirus transmission and prevalence: Novel findings of virus circulation in horses and dogs in Morocco. .  Infection, genetics and evolution : journal of molecular epidemiology and evolutionary genetics in infectious diseases93   104975 - 104975   2021.9Reviewed International journal

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    Non-primate hepacivirus (NPHV) is a homolog of hepatitis C virus and has been isolated from dogs and horses. Data on NPHV prevalence and distribution are not complete, and there is a particular lack of reports from the African continent. The present study represents the first investigation of NPHV prevalence in horses and dogs in North Africa. Blood was collected from 172 horses and 36 dogs at different locations in Morocco, and screened for NPHV RNA using nested PCR targeting 5'UTR and NS3 regions and analyzed for anti-NPHV NS3 antibody using a Gaussia luciferase immunoprecipitation system-to determine seroprevalence. Eight sequences of the NS3 region isolated from positive serum samples were targeted for phylogenetic analysis. Horses and dogs showed respective NPHV RNA positivity rates of 10.5% and 5.5%, and seroprevalences of 65.7% and 8.33%. Juvenile horses appeared more susceptible to infection, with a 23.5% NHPV RNA positivity rate. Seropositivity was more extensive in mares than stallions (77.14% vs. 46.27%, p < 0.0001). Phylogenetically, that NPHV NS3 genes isolated from horses and dog are clustered together. The NPHV strains we detected showed no correlation with geographic location within Morocco. In conclusion, Moroccan horses showed much evidence of previous and/or current NPHV infection, with young age and female sex as noted potential risk factors. Interestingly, NPHV is circulating in dogs as well as horses, suggesting that it has crossed species barriers and that horses and dogs are potential vectors by which an ancestor to hepatitis C virus was transmitted into human populations.

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  • ケアシュ・モハメド, 尼子 豊, ハシェム・モハメド, 山本 直樹, 杉山 真也, 溝上 雅史, 小原 道法, 小原 恭子 .  B型肝炎ウイルスcccDNAを標的としたCRISPR/Cas9システムの生体内送達法の開発 .  日本癌学会総会記事80回   [J3 - 5]   2021.9B型肝炎ウイルスcccDNAを標的としたCRISPR/Cas9システムの生体内送達法の開発Reviewed International journal

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  • Honda T, Gomi S, Yamane D, Yasui F, Yamamoto T, Munakata T, Itoh Y, Ogasawara K, Sanada T, Yamaji K, Yasutomi Y, Tsukiyama-Kohara K, Kohara M. .  Development and Characterization of a Highly Sensitive NanoLuciferase-Based Immunoprecipitation System for the Detection of Anti-Influenza Virus HA .  mSphere6 ( 3 ) e1342-20   2021.5Development and Characterization of a Highly Sensitive NanoLuciferase-Based Immunoprecipitation System for the Detection of Anti-Influenza Virus HA Reviewed

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    DOI: 10.1128/mSphere.01342-20.

  • Tomoko Honda, Sumiko Gomi, Daisuke Yamane, Fumihiko Yasui, Takuya Yamamoto, Tsubasa Munakata, Yasushi Itoh, Kazumasa Ogasawara, Takahiro Sanada, Kenzaburo Yamaji, Yasuhiro Yasutomi, Kyoko Tsukiyama-Kohara, Michinori Kohara .  Development and Characterization of a Highly Sensitive NanoLuciferase-Based Immunoprecipitation System for the Detection of Anti-Influenza Virus HA Antibodies. .  mSphere6 ( 3 ) 1 - 14   2021.5Reviewed International journal

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    Antibody detection is crucial for monitoring host immune responses to specific pathogen antigens (Ags) and evaluating vaccine efficacies. The luciferase immunoprecipitation system (LIPS) was developed for sensitive detection of Ag-specific antibodies in sera from various species. In this study, we describe NanoLIPS, an improved LIPS assay based on NanoLuciferase (NLuc), and employ the assay for monitoring antibody responses following influenza virus infection or vaccination. We generated recombinant influenza virus hemagglutinin (HA) proteins tagged with N-terminal (N-NLuc-HA) or C-terminal (C-NLuc-HA) NLuc reporters. NLuc-HA yielded an at least 20-fold higher signal-to-noise ratio than did a LIPS assay employing a recombinant HA-Gaussia princeps luciferase (GLuc) fusion protein. NanoLIPS-based detection of anti-HA antibodies yielded highly reproducible results with a broad dynamic range. The levels of antibodies against C-NLuc-HA generated by mice vaccinated with recombinant vaccinia virus DIs strain expressing an influenza virus HA protein (rDIs-HA) was significantly correlated with the protective effect elicited by the rDIs-HA vaccine. C-NLuc-HA underwent glycosylation with native conformations and assembly to form a trimeric structure and was detected by monoclonal antibodies that detect conformational epitopes present on the globular head or stalk domain of HA. Therefore, NanoLIPS is applicable for evaluating vaccine efficacy. We also showed that C-NLuc-HA is applicable for detection of HA-specific antibodies in sera from various experimental species, including mouse, cynomolgus macaque, and tree shrew. Thus, NanoLIPS-based detection of HA offers a simple and high-sensitivity method that detects native conformational epitopes and can be used in various experimental animal models.IMPORTANCE Influenza virus HA-specific antibodies can be detected via the hemagglutination inhibition (HI) assay, the neutralization (NT) assay, and the enzyme-linked immunosorbent assay (ELISA). However, these assays have some drawbacks, including narrow dynamic range and the requirement for large amounts of sera. As an alternative to an ELISA-based method, luciferase immunoprecipitation system (LIPS) was developed. We focused on NanoLuciferase (NLuc), which has a small size, higher intensity, and longer stability. In this study, we developed a technically feasible and highly sensitive method for detecting influenza virus-specific antibodies using a NLuc-tagged recombinant HA protein produced in mammalian cells. HA with a C-terminal NLuc extension (C-NLuc-HA) was glycosylated and formed trimeric complexes when expressed in mammalian cells. Furthermore, C-NLuc-HA was recognized not only by monoclonal antibodies that bind to the globular head domain but also by those that bind to the stalk domain. We also demonstrated that the data obtained by this assay correlate with the protection of an experimental vaccine in animal models.

    DOI: 10.1128/mSphere.01342-20

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  • Makoto Saito, Yasushi Itoh, Fumihiko Yasui, Tsubasa Munakata, Daisuke Yamane, Makoto Ozawa, Risa Ito, Takayuki Katoh, Hirohito Ishigaki, Misako Nakayama, Shintaro Shichinohe, Kenzaburo Yamaji, Naoki Yamamoto, Ai Ikejiri, Tomoko Honda, Takahiro Sanada, Yoshihiro Sakoda, Hiroshi Kida, Thi Quynh Mai Le, Yoshihiro Kawaoka, Kazumasa Ogasawara, Kyoko Tsukiyama-Kohara, Hiroaki Suga, Michinori Kohara .  Macrocyclic peptides exhibit antiviral effects against influenza virus HA and prevent pneumonia in animal models. .  Nature communications12 ( 1 ) 2654 - 2654   2021.5Reviewed International journal

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    Most anti-influenza drugs currently used, such as oseltamivir and zanamivir, inhibit the enzymatic activity of neuraminidase. However, neuraminidase inhibitor-resistant viruses have already been identified from various influenza virus isolates. Here, we report the development of a class of macrocyclic peptides that bind the influenza viral envelope protein hemagglutinin, named iHA. Of 28 iHAs examined, iHA-24 and iHA-100 have inhibitory effects on the in vitro replication of a wide range of Group 1 influenza viruses. In particular, iHA-100 bifunctionally inhibits hemagglutinin-mediated adsorption and membrane fusion through binding to the stalk domain of hemagglutinin. Moreover, iHA-100 shows powerful efficacy in inhibiting the growth of highly pathogenic influenza viruses and preventing severe pneumonia at later stages of infection in mouse and non-human primate cynomolgus macaque models. This study shows the potential for developing cyclic peptides that can be produced more efficiently than antibodies and have multiple functions as next-generation, mid-sized biomolecules.

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  • Toll-Like Receptor and Cytokine Responses to Infection with Endogenous and Exogenous Koala Retrovirus, and Vaccination as a Control Strategy .  Curr Issues Mol Biol. 43 ( 1 ) 52 - 64   2021.4Toll-Like Receptor and Cytokine Responses to Infection with Endogenous and Exogenous Koala Retrovirus, and Vaccination as a Control StrategyReviewed International coauthorship

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    DOI: 10.3390/cimb43010005

  • Md Abul Hashem1, 2, 3, Mohammad Enamul Hoque Kayesh1, 2, 4, Fumie Maetani5, Taiki Eiei5, Kyoya Mochizuki5, Shinsaku Ochiai5, Ayaka Ito5, Nanao Ito5, Hiroko Sakurai5, Takayuki Asai5 and Kyoko Tsukiyama-Kohara .  Koala retrovirus (KoRV) subtypes and their impact on captive koala (Phascolarctos cinereus) health .  Archives of Virologyaccepted   2021.4Koala retrovirus (KoRV) subtypes and their impact on captive koala (Phascolarctos cinereus) healthReviewed

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    DOI: 10.1007/s00705-021-0

  • Mohammad Enamul Hoque Kayesh 1,2 , Md Abul Hashem 1,3,4 and Kyoko Tsukiyama-Kohara .  Toll-Like Receptor Expression Profiles in Koala (Phascolarctos cinereus) Peripheral Blood Mononuclear Cells Infected with Multiple KoRV Subtypes .    11   983   2021.4Toll-Like Receptor Expression Profiles in Koala (Phascolarctos cinereus) Peripheral Blood Mononuclear Cells Infected with Multiple KoRV SubtypesReviewed

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    DOI: 10.3390/ani11040

  • Mohammad Enamul Hoque Kayesh, Md Abul Hashem, Kyoko Tsukiyama-Kohara .  Toll-Like Receptor Expression Profiles in Koala (Phascolarctos cinereus) Peripheral Blood Mononuclear Cells Infected with Multiple KoRV Subtypes. .  Animals : an open access journal from MDPI11 ( 4 )   2021.4Reviewed International journal

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    Toll-like receptors (TLRs), evolutionarily conserved pattern recognition receptors, play an important role in innate immunity by recognizing microbial pathogen-associated molecular patterns. Koala retrovirus (KoRV), a major koala pathogen, exists in both endogenous (KoRV-A) and exogenous forms (KoRV-B to J). However, the expression profile of TLRs in koalas infected with KoRV-A and other subtypes is yet to characterize. Here, we investigated TLR expression profiles in koalas with a range of subtype infection profiles (KoRV-A only vs. KoRV-A with KoRV-B and/or -C). To this end, we cloned partial sequences for TLRs (TLR2-10 and TLR13), developed real-time PCR assays, and determined TLRs mRNA expression patterns in koala PBMCs and/or tissues. All the reported TLRs for koala were expressed in PBMCs, and variations in TLR expression were observed in koalas infected with exogenous subtypes (KoRV-B and KoRV-C) compared to the endogenous subtype (KoRV-A) only, which indicates the implications of TLRs in KoRV infection. TLRs were also found to be differentially expressed in koala tissues. This is the first report of TLR expression profiles in koala, which provides insights into koala's immune response to KoRV infection that could be utilized for the future exploitation of TLR modulators in the maintenance of koala health.

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  • Nagai M, Okabayashi T, Akagami M, Matsuu A, Fujimoto Y, Hashem MA, Mekata H, Nakao R, Matsuno K, Katayama Y, Oba M, Omatsu T, Asai T, Nakagawa K, Ito H, Madarame H, Kawai K, Ito T, Nonaka N, Tsukiyama-Kohara K, Inoshima Y, Mizutani T, Misawa N. .  Metagenomic identification, sequencing, and genome analysis of porcine hepe-astroviruses (bastroviruses) in porcine feces in Japan .  Infect Genet Evol.88   104664   2021.3Metagenomic identification, sequencing, and genome analysis of porcine hepe-astroviruses (bastroviruses) in porcine feces in JapanReviewed

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  • Makoto Nagai, Tamaki Okabayashi, Masataka Akagami, Aya Matsuu, Yoshikazu Fujimoto, Md Abul Hashem, Hirohisa Mekata, Ryo Nakao, Keita Matsuno, Yukie Katayama, Mami Oba, Tsutomu Omatsu, Tetsuo Asai, Keisuke Nakagawa, Hiroshi Ito, Hiroo Madarame, Kazuhiro Kawai, Toshihiro Ito, Nariaki Nonaka, Kyoko Tsukiyama-Kohara, Yasuo Inoshima, Tetsuya Mizutani, Naoaki Misawa .  Metagenomic identification, sequencing, and genome analysis of porcine hepe-astroviruses (bastroviruses) in porcine feces in Japan. .  Infection, genetics and evolution : journal of molecular epidemiology and evolutionary genetics in infectious diseases88   104664 - 104664   2021.3Reviewed International journal

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    Recently, hepe-astrovirus-like RNA viruses named bastroviruses (BastVs), have been found in human, pig, bat, and rat fecal samples. In this study, we determined nearly complete genome sequences of four BastVs in the feces of healthy pigs. Genetic characterization revealed that these porcine BastVs (PBastVs) and BastVs from other animals including humans, had the same genome organization, that is, they contained three predicted conserved domains of viral methyltransferase, RNA helicase, and RdRp in the nonstructural ORF1 and the astrovirus capsid domain in the structural ORF2. Phylogenetic analyses using RNA-dependent RNA polymerase and the capsid region revealed that PBastVs branched with bat and rat BastVs; however, the groups formed by each host were distantly related to human BastVs. Pairwise amino acid sequence comparison demonstrated that PBastVs shared 95.2-98.6% and 76.1-95.5% sequence identity among each other in the ORF1 and ORF2 regions, respectively; the sequence identities between PBastVs and BastVs from other animals were 21.4-42.5% and 9.1-20.6% in the ORF1 and ORF2 regions, respectively. This suggested that BastVs were derived from a common ancestor but evolved independently in each host population during a prolonged period. Putative recombination events were identified in the PBastV genome, suggesting that PBastVs gain sequence diversity and flexibility through recombination events. In an analysis of previously obtained metagenomic data, PBastV sequence reads were detected in 7.3% (23/315) of fecal samples from pigs indicating that PBastVs are distributed among pig populations in Japan.

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  • Suzuki Y, Onuma H, Sato R, Sato Y, Hashiba A, Maeki M, Tokeshi M, Kayesh MEH, Kohara M, Tsukiyama-Kohara K, Harashima H. .  Lipid nanoparticles loaded with ribonucleoprotein-oligonucleotide complexes synthesized using a microfluidic device exhibit robust genome editing and hepatitis B virus inhibition. .    330   67 - 71   2021.2Lipid nanoparticles loaded with ribonucleoprotein-oligonucleotide complexes synthesized using a microfluidic device exhibit robust genome editing and hepatitis B virus inhibition.Reviewed

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  • Yuichi Suzuki, Haruno Onuma, Risa Sato, Yusuke Sato, Akari Hashiba, Masatoshi Maeki, Manabu Tokeshi, Mohammad Enamul Hoque Kayesh, Michinori Kohara, Kyoko Tsukiyama-Kohara, Hideyoshi Harashima .  Lipid nanoparticles loaded with ribonucleoprotein-oligonucleotide complexes synthesized using a microfluidic device exhibit robust genome editing and hepatitis B virus inhibition. .  Journal of controlled release : official journal of the Controlled Release Society330   61 - 71   2021.2Reviewed International journal

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    The clustered regularly interspaced short palindromic repeats (CRISPR)-associated (Cas) system has considerable therapeutic potential for use in treating a wide range of intractable genetic and infectious diseases including hepatitis B virus (HBV) infections. While non-viral delivery technologies for the CRISPR/Cas system are expected to have clinical applications, difficulties associated with the clinically relevant synthesis of formulations and the poor efficiency of delivery severely hinder therapeutic genome editing. We report herein on the production of a lipid nanoparticle (LNP)-based CRISPR/Cas ribonucleoprotein (RNP) delivery nanoplatform synthesized using a clinically relevant mixer-equipped microfluidic device. DNA cleavage activity and the aggregation of Cas enzymes was completely avoided under the optimized synthetic conditions. The optimized formulation, which was identified through 2 steps of design of experiments, exhibited excellent gene disruption (up to 97%) and base substitution (up to 23%) without any apparent cytotoxicity. The addition of negative charges to the RNPs by complexing single-stranded oligonucleotide (ssON) significantly enhanced the delivery of both Cas9 and Cpf1 RNPs. The optimized formulation significantly suppressed both HBV DNA and covalently closed circular DNA (cccDNA) in HBV-infected human liver cells compared to adeno-associated virus type 2 (AAV2). These findings represent a significant contribution to the development of CRISPR/Cas RNP delivery technology and its practical applications in genome editing therapy.

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  • Mohammad Enamul Hoque Kayesh, Michinori Kohara, Kyoko Tsukiyama-Kohara .  Recent Insights Into the Molecular Mechanism of Toll-Like Receptor Response to Dengue Virus Infection. .  Frontiers in microbiology12   744233 - 744233   2021Reviewed International journal

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    Dengue is the most prevalent and rapidly spreading mosquito-borne viral disease caused by dengue virus (DENV). Recently, DENV has been affecting humans within an expanding geographic range due to the warming of the earth. Innate immune responses play a significant role in antiviral defense, and Toll-like receptors (TLRs) are key regulators of innate immunity. Therefore, a detailed understanding of TLR and DENV interactions is important for devising therapeutic and preventive strategies. Several studies have indicated the ability of DENV to modulate the TLR signaling pathway and host immune response. Vaccination is considered one of the most successful medical interventions for preventing viral infections. However, only a partially protective dengue vaccine, the first licensed dengue vaccine CYD-TDV, is available in some dengue-endemic countries to protect against DENV infection. Therefore, the development of a fully protective, durable, and safe DENV vaccine is a priority for global health. Here, we demonstrate the progress made in our understanding of the host response to DENV infection, with a particular focus on TLR response and how DENV avoids the response toward establishing infection. We also discuss dengue vaccine candidates in late-stage development and the issues that must be overcome to enable their success.

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  • CD4, CD8b, and Cytokines Expression Profiles in Peripheral Blood Mononuclear Cells Infected with Different Subtypes of KoRV from Koalas (Phascolarctos cinereus) in a Japanese Zoo. .  Viruses12 ( 12 ) 1415   2020.12CD4, CD8b, and Cytokines Expression Profiles in Peripheral Blood Mononuclear Cells Infected with Different Subtypes of KoRV from Koalas (Phascolarctos cinereus) in a Japanese Zoo.

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    DOI: 10.3390/v12121415.

  • Mohammad Enamul Hoque Kayesh, Md Abul Hashem, Fumie Maetani, Taiki Eiei, Kyoya Mochizuki, Shinsaku Ochiai, Ayaka Ito, Nanao Ito, Hiroko Sakurai, Takayuki Asai, Kyoko Tsukiyama-Kohara .  CD4, CD8b, and Cytokines Expression Profiles in Peripheral Blood Mononuclear Cells Infected with Different Subtypes of KoRV from Koalas (Phascolarctos cinereus) in a Japanese Zoo. .  Viruses12 ( 12 )   2020.12Reviewed International journal

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    Koala retrovirus (KoRV) poses a major threat to koala health and conservation, and currently has 10 identified subtypes: an endogenous subtype (KoRV-A) and nine exogenous subtypes (KoRV-B to KoRV-J). However, subtype-related variations in koala immune response to KoRV are uncharacterized. In this study, we investigated KoRV-related immunophenotypic changes in a captive koala population (Hirakawa zoo, Japan) with a range of subtype infection profiles (KoRV-A only vs. KoRV-A with KoRV-B and/or -C), based on qPCR measurements of CD4, CD8b, IL-6, IL-10 and IL-17A mRNA expression in unstimulated and concanavalin (Con)-A-stimulated peripheral blood mononuclear cells (PBMCs). Although CD4, CD8b, and IL-17A expression did not differ between KoRV subtype infection profiles, IL-6 expression was higher in koalas with exogenous infections (both KoRV-B and KoRV-C) than those with the endogenous subtype only. IL-10 expression did not significantly differ between subtype infection profiles but did show a marked increase-accompanying decreased CD4:CD8b ratio-in a koala with lymphoma and co-infected with KoRV-A and -B, thus suggesting immunosuppression. Taken together, the findings of this study provide insights into koala immune response to multiple KoRV subtypes, which can be exploited for the development of prophylactic and therapeutic interventions for this iconic marsupial species.

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  • Ezzikouri S, Nourlil J, Benjelloun S, Kohara M, Tsukiyama-Kohara K. .  Coronavirus disease 2019-Historical context, virology, pathogenesis, immunotherapy, and vaccine development. .  Hum Vaccin Immunother. 16 ( 12 ) 2992 - 3000   2020.12Coronavirus disease 2019-Historical context, virology, pathogenesis, immunotherapy, and vaccine development.Invited Reviewed

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    DOI: 10.1080/21645515.2020.1787068.

  • Kayesh MEH, Amako Y, Hashem MA, Murakami S, Ogawa S, Yamamoto N, Hifumi T, Miyoshi N, Sugiyama M, Tanaka Y, Mizokami M, Kohara M, Tsukiyama-Kohara K. .  Development of an in vivo delivery system for CRISPR/Cas9-mediated targeting of hepatitis B virus cccDNA .  Virus Research290   198191   2020.12Development of an in vivo delivery system for CRISPR/Cas9-mediated targeting of hepatitis B virus cccDNAReviewed

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    DOI: 10.1016/j.virusres.2020.198191

  • Sayeh Ezzikouri, Jalal Nourlil, Soumaya Benjelloun, Michinori Kohara, Kyoko Tsukiyama-Kohara .  Coronavirus disease 2019-Historical context, virology, pathogenesis, immunotherapy, and vaccine development. .  Human vaccines & immunotherapeutics16 ( 12 ) 2992 - 3000   2020.12Reviewed International journal

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    The current Coronavirus Disease 2019 (COVID-19) pandemic is causing great alarm around the world. The pathogen for COVID-19 - severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) - is the seventh known coronavirus to cause pneumonia in humans. While much remains unknown about SARS-CoV-2, physicians and researchers have begun to publish relevant findings, and much evidence is available on coronaviruses previously circulating in human and animal populations. In this review, we situate COVID-19 in its context as a transboundary viral disease, and provide a comprehensive discussion focused on the discovery, spread, virology, pathogenesis, and clinical features of this disease, its causative coronaviral pathogen, and approaches to combating the disease through immunotherapies and other treatments and vaccine development. An epidemiological survey revealed a potentially large number of asymptomatic SARS-CoV-2 carriers within the population, which may hamper efforts against COVID-19. Finally, we emphasize that vaccines against SARS-CoV-2, which may be developed by 2021, will be essential for prevention of COVID-19.

    DOI: 10.1080/21645515.2020.1787068

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  • Elmessaoudi-Idrissi M, Tsukiyama-Kohara K, Nourlil J, Kettani A, Windisch MP, Kohara M, Malik YS, Dhama K, Benjelloun S, Ezzikouri S. .  Structure-guided discovery approach identifies potential lead compounds targeting M pro of SARS-CoV-2 .  Virusdisease   2020.11Structure-guided discovery approach identifies potential lead compounds targeting M pro of SARS-CoV-2Reviewed

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    DOI: 10.1007/s13337-020-00627-6.

  • Sayeh Ezzikouri, Jalal Nourlil, Kyoko Tsukiyama-Kohara, Michinori Kohara, Hicham El Ossmani, Marc P Windisch, Soumaya Benjelloun .  Nanobodies: an unexplored opportunity to combat COVID-19. .  Journal of biomolecular structure & dynamics   1 - 3   2020.11Reviewed International journal

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    Coronavirus disease 2019 (COVID-19) is a highly contagious disease caused by severe acute respiratory coronavirus 2 (SARS-CoV-2). This virus is capable of human-to-human transmission, and is spreading rapidly round the globe, with markedly high fatality rates. Unfortunately, there are neither vaccines nor specific therapies available to combat it, and the developments of such approaches depend on pursuing multiple avenues in biomedical science. Accordingly, in this paper we highlight one such avenue-nanobodies-for potential utility in therapeutic and diagnostic interventions to combat COVID-19.Communicated by Ramaswamy H. Sarma.

    DOI: 10.1080/07391102.2020.1845801

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  • Kayesh MEH, Hashem MA, Tsukiyama-Kohara K. .  Koala retrovirus epidemiology, transmission mode, pathogenesis, and host immune response in koalas (Phascolarctos cinereus): a review. .  Arch Virol. 165 ( 11 ) 2409 - 2417   2020.11Koala retrovirus epidemiology, transmission mode, pathogenesis, and host immune response in koalas (Phascolarctos cinereus): a review.Invited Reviewed

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    DOI: 10.1007/s00705-020-04770-9.

  • Ezzikouri S, Nourlil J, Tsukiyama-Kohara K, Kohara M, El Ossmani H, Windisch MP, Benjelloun S. .  Nanobodies: an unexplored opportunity to combat COVID-19 .  J Biomol Struct Dyn.10   1 - 3   2020.11Nanobodies: an unexplored opportunity to combat COVID-19Reviewed

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    DOI: 10.1080/07391102.2020.1845801.

  • Mohammad Enamul Hoque Kayesh, Md Abul Hashem, Kyoko Tsukiyama-Kohara .  Koala retrovirus epidemiology, transmission mode, pathogenesis, and host immune response in koalas (Phascolarctos cinereus): a review. .  Archives of virology165 ( 11 ) 2409 - 2417   2020.11Reviewed International journal

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    Koala retrovirus (KoRV) is a major threat to koala health and conservation. It also represents a series of challenges across the fields of virology, immunology, and epidemiology that are of great potential interest to any researcher in the field of retroviral diseases. KoRV is a gammaretrovirus that is present in both endogenous and exogenous forms in koala populations, with a still-active endogenization process. KoRV may induce immunosuppression and neoplastic conditions such as lymphoma and leukemia and play a role in chlamydiosis and other diseases in koalas. KoRV transmission modes, pathogenesis, and host immune response still remain unclear, and a clear understanding of these areas is critical for devising effective preventative and therapeutic strategies. Research on KoRV is clearly critical for koala conservation. In this review, we provide an overview of the current understanding and future challenges related to KoRV epidemiology, transmission mode, pathogenesis, and host immune response and discuss prospects for therapeutic and preventive vaccines.

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  • Hashem MA, Maetani F, Kayesh MEH, Eiei T, Mochizuki K, Ito A, Sakurai H, Asai T, Tsukiyama-Kohara K. .  Transmission of koala retrovirus from parent koalas to a joey in a Japanese zoo. .  Journal of Virolgy94 ( 11 ) e0019-20   2020.5Transmission of koala retrovirus from parent koalas to a joey in a Japanese zoo.Reviewed

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    DOI: 10.1128/JVI.00019-20

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  • Chi Hai-Ying, Yuuki Tanaka, Tatsuro Hifumi, Ko-ichiro Shoji, Mohammad Enamul Hoque Kayesh, Md Abul Hashem, Bouchra Kitab, Takahiro Sanada, Tomoko Fujiyuki, Misako Yoneda, Hitoshi Hatai, Akira Yabuki, Noriaki Miyoshi, Chieko Kai, Michinori Kohara, Kyoko Tsukiyama-Kohara .  Pathological and genetic aspects of spontaneous mammary gland tumor in Tupaia belangeri (Tree shrew) .  PLoS One15 ( 5 ) e0233232   2020.5Pathological and genetic aspects of spontaneous mammary gland tumor in Tupaia belangeri (Tree shrew)Reviewed

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    DOI: 10.1371/journal.pone.0233232

  • Sayeh Ezzikouri, Mohammad Enamul Hoque Kayesh, Soumaya Benjelloun, Michinori Kohara and Kyoko Tsukiyama-Kohara .  Targeting host innate and adaptive immunity to achieve the functional cure of chronic hepatitis B .  Vaccines8 ( 2 ) E216   2020.5Targeting host innate and adaptive immunity to achieve the functional cure of chronic hepatitis B Reviewed

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    DOI: 10.3390/vaccines8020216.

  • Mohammad Enamul Hoque Kayesh 1,2 , Md Abul Hashem 1, Bouchra Kitab 1 and Kyoko Tsukiyama-Kohara .  Pathogenesis and Immune Response Caused by Vector-Borne and Other Viral Infections in a Tupaia Model .  microorganism   2019.12Pathogenesis and Immune Response Caused by Vector-Borne and Other Viral Infections in a Tupaia ModelInvited Reviewed

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    DOI: 10.3390/microorganisms7120686

  • Sanada T, Yamamoto N, Kayesh MEH, Tsukiyama-Kohara K, Hasegawa H, Miyazaki T, Takano JI, Shiogama Y, Yasutomi Y, Goh Y, Yoshida O, Hiasa Y, Kohara M. .  Intranasal vaccination with HBs and HBc protein combined with carboxyl vinyl polymer induces strong neutralizing antibody, anti-HBs IgA, and IFNG response. .  Biochem Biophys Res Commun.520 ( 1 ) 86 - 92   2019.11Intranasal vaccination with HBs and HBc protein combined with carboxyl vinyl polymer induces strong neutralizing antibody, anti-HBs IgA, and IFNG response.Reviewed

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    DOI: 10.1016/j.bbrc.

  • Takahiro Sanada, Naoki Yamamoto, Mohammad Enamul Hoque Kayesh, Kyoko Tsukiyama-Kohara, Hideki Hasegawa, Takashi Miyazaki, Jun-Ichiro Takano, Yumiko Shiogama, Yasuhiro Yasutomi, Yasumasa Goh, Osamu Yoshida, Yoichi Hiasa, Michinori Kohara .  Intranasal vaccination with HBs and HBc protein combined with carboxyl vinyl polymer induces strong neutralizing antibody, anti-HBs IgA, and IFNG response. .  Biochemical and biophysical research communications520 ( 1 ) 86 - 92   2019.11Reviewed International journal

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    Hepatitis B virus (HBV) infection causes acute and chronic hepatitis, which is a major public health concern worldwide. Immunization methods incorporating hepatitis B surface-small (HBs-S) antigen and hepatitis B core antigen (HBc) have been proposed as candidate therapeutic vaccines, but the elimination of existing HBV infection remains a challenge. To enhance the efficacy of HBs and HBc vaccination, we investigated HBs-large (HBs-L) as an immunogen, and carboxyl vinyl polymer (CVP) as an excipient. HBs-S or HBs-L, in combination with HBc antigen, was administered subcutaneously (without CVP) or intranasally (with or without CVP) for the evaluation of immune response in the tree shrew, which is considered to be a suitable small animal model of HBV infection. Immunization with HBs-L antigen by either route induced a rapid IgG response. Intranasal immunization with HBs-S or HBs-L and HBc formulated with CVP strongly induced neutralizing antibody activity, IgA response, and HBc-specific expression of the interferon gamma-encoding gene. These data indicated the potential of HBs-L and HBc intranasal immunization with CVP, not only as a therapeutic vaccine, but also as a prophylactic vaccine candidate.

    DOI: 10.1016/j.bbrc.2019.09.072

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  • Hashem MA, Kayesh MEH, Yamato O, Maetani F, Eiei T, Mochizuki K, Sakurai H, Ito A, Kannno H, Kasahara T, Amano Y, Tsukiyama-Kohara K. .  Coinfection with koala retrovirus subtypes A and B and its impact on captive koalas in Japanese zoos. .  Arch Virol. 164 ( 11 ) 2735 - 2745   2019.11Coinfection with koala retrovirus subtypes A and B and its impact on captive koalas in Japanese zoos.Reviewed

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    DOI: 10.1007/s00705-019-04392-w.

  • Md Abul Hashem, Mohammad Enamul Hoque Kayesh, Osamu Yamato, Fumie Maetani, Taiki Eiei, Kyoya Mochizuki, Hiroko Sakurai, Ayaka Ito, Hiroki Kannno, Tatsuya Kasahara, Yusuke Amano, Kyoko Tsukiyama-Kohara .  Coinfection with koala retrovirus subtypes A and B and its impact on captive koalas in Japanese zoos. .  Archives of virology164 ( 11 ) 2735 - 2745   2019.11Reviewed International journal

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    Koala retrovirus (KoRV) is unique among endogenous retroviruses because its endogenization is still active. Two major KoRV subtypes, KoRV-A and B, have been described, and KoRV-B is associated with disease and poses a health threat to koalas. Here, we investigated the co-prevalence of KoRV-A and KoRV-B, detected by type-specific PCR and sequencing, and their impact on the health of koalas in three Japanese zoos. We also investigated KoRV proviral loads and found varying amounts of genomic DNA (gDNA) in peripheral blood mononuclear cells (PBMCs). We found that 100% of the koalas examined were infected with KoRV-A and 60% (12/20) were coinfected with KoRV-B. The KoRV-A sequence was highly conserved, whereas the KoRV-B sequence varied among individuals. Interestingly, we observed possible vertical transmission of KoRV-B in one offspring in which the KoRV-B sequence was similar to that of the father but not the mother. Moreover, we characterized the KoRV growth patterns in concanavalin-A-stimulated PBMCs isolated from KoRV-B-coinfected or KoRV-B-uninfected koalas. We quantified the KoRV provirus in gDNA and the KoRV RNA copy numbers in cells and culture supernatants by real-time PCR at days 4, 7, and 14 post-seeding. As the study population is housed in captivity, a longitudinal study of these koalas may provide an opportunity to study the transmission mode of KoRV-B. In addition, we characterized KoRV isolates by infecting tupaia cells. The results suggested that tupaia may be used as an infection model for KoRV. Thus, this study may enhance our understanding of KoRV-B coinfection and transmission in the captive koalas.

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  • Sanada T, Tsukiyama-Kohara K, Shin-I T, Yamamoto N, Kayesh MEH, Yamane D, Takano JI, Shiogama Y, Yasutomi Y, Ikeo K, Gojobori T, Mizokami M, Kohara M. .  Construction of complete Tupaia belangeri transcriptome database by whole-genome and comprehensive RNA sequencing. .  Sci Rep. 9 ( 1 ) 12372   2019.8Construction of complete Tupaia belangeri transcriptome database by whole-genome and comprehensive RNA sequencing. Reviewed

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    DOI: 10.1038/s41598-019-48867-x.

  • Takahiro Sanada, Kyoko Tsukiyama-Kohara, Tadasu Shin-I, Naoki Yamamoto, Mohammad Enamul Hoque Kayesh, Daisuke Yamane, Jun-Ichiro Takano, Yumiko Shiogama, Yasuhiro Yasutomi, Kazuho Ikeo, Takashi Gojobori, Masashi Mizokami, Michinori Kohara .  Construction of complete Tupaia belangeri transcriptome database by whole-genome and comprehensive RNA sequencing. .  Scientific reports9 ( 1 ) 12372 - 12372   2019.8Reviewed International journal

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    The northern tree shrew (Tupaia belangeri) possesses high potential as an animal model of human diseases and biology, given its genetic similarity to primates. Although genetic information on the tree shrew has already been published, some of the entire coding sequences (CDSs) of tree shrew genes remained incomplete, and the reliability of these CDSs remained difficult to determine. To improve the determination of tree shrew CDSs, we performed sequencing of the whole-genome, mRNA, and total RNA and integrated the resulting data. Additionally, we established criteria for the selection of reliable CDSs and annotated these sequences by comparison to the human transcriptome, resulting in the identification of complete CDSs for 12,612 tree shrew genes and yielding a more accurate tree shrew genome database (TupaiaBase: http://tupaiabase.org ). Transcriptome profiles in hepatitis B virus infected tree shrew livers were analyzed for validation. Gene ontology analysis showed enriched transcriptional regulation at 1 day post-infection, namely in the "type I interferon signaling pathway". Moreover, a negative regulator of type I interferon, SOCS3, was induced. This work, which provides a tree shrew CDS database based on genomic DNA and RNA sequencing, is expected to serve as a powerful tool for further development of the tree shrew model.

    DOI: 10.1038/s41598-019-48867-x

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  • Matsui T, Handa Y, Kanda T, Tsukiyama-Kohara K. .  Silencing of the foot-and-mouth disease virus internal ribosomal entry site by targeting relatively conserved region among serotypes. .  Virus Genes.   2019.7Silencing of the foot-and-mouth disease virus internal ribosomal entry site by targeting relatively conserved region among serotypes. Reviewed

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    DOI: 10.1007/s11262-019-01696-6.

  • Kitab B, Satoh M, Ohmori Y, Munakata T, Sudoh M, Kohara M, Tsukiyama-Kohara K .  Ribonucleotide reductase M2 promotes RNA replication of hepatitis C virus by protecting NS5B protein from hPLIC1-dependent proteasomal degradation. .  J. Biol. Chem.294 ( 15 ) 5759 - 5773   2019.4Ribonucleotide reductase M2 promotes RNA replication of hepatitis C virus by protecting NS5B protein from hPLIC1-dependent proteasomal degradation.Reviewed

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    DOI: 10.1074/jbc.RA118.004397.

  • Sanada T, Yasui F, Honda T, Kayesh MEH, Takano JI, Shiogama Y, Yasutomi Y, Tsukiyama-Kohara K, Kohara M. .  Avian H5N1 influenza virus infection causes severe pneumonia in the Northern tree shrew (Tupaia belangeri). .  Virology529   101 - 110   2019.3Avian H5N1 influenza virus infection causes severe pneumonia in the Northern tree shrew (Tupaia belangeri).Reviewed

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    DOI: 10.1016/j.virol.2019.01.015.

  • Kayesh MEH, Yamato O, Rahman MM, Hashem MA, Maetani F, Eiei T, Mochizuki K, Sakurai H, Tsukiyama-Kohara K. .  Molecular dynamics of koala retrovirus infection in captive koalas in Japan. .  Arch. Virol.164 ( 3 ) 757 - 765   2019.3Molecular dynamics of koala retrovirus infection in captive koalas in Japan.Reviewed

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    DOI: 10.1007/s00705-019-04149-5.

  • Takahiro Sanada, Fumihiko Yasui, Tomoko Honda, Mohammad Enamul Hoque Kayesh, Jun-Ichiro Takano, Yumiko Shiogama, Yasuhiro Yasutomi, Kyoko Tsukiyama-Kohara, Michinori Kohara .  Avian H5N1 influenza virus infection causes severe pneumonia in the Northern tree shrew (Tupaia belangeri). .  Virology529   101 - 110   2019.3Reviewed International journal

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    Avian-origin influenza viruses like H5N1 and H7N9 often cause severe symptoms with high mortality in humans. Animal models are useful for clarification of the mechanisms of pathogenicity of these infections. In this study, to expand the potential utility of the Northern tree shrew (Tupaia belangeri) for influenza virus infection, we assessed the pathogenicity of H5N1 and H7N9 avian influenza viruses in tupaia. Infectious virus was detected continuously from nasal, oral, tracheal, and conjunctival swab samples in the animals infected with these viruses. H5N1 influenza virus infection of tupaia caused severe diffuse pneumonia with fever and weight loss. In contrast, H7N9 influenza virus infection caused focal pneumonia. The severity of pneumonia was correlated with proinflammatory cytokine transcript levels. These results indicated that tupaia can be another suitable animal model for avian influenza virus research.

    DOI: 10.1016/j.virol.2019.01.015

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  • Kitab, B., Kohara, M., Tsukiyama-Kohara, K. .  Experimental in vitro and in vivo systems for studying the innate immune response during dengue virus infections. .  Arch Virol.163 ( 7 ) 1717 - 1726   2018.7Experimental in vitro and in vivo systems for studying the innate immune response during dengue virus infections.Reviewed

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    DOI: 10.1007/s00705-018-3784-z.

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  • Kyoko Tsukiyama-Kohara, Michinori Kohara .  Hepatitis C Virus: Viral Quasispecies and Genotype .  International Journal of Molecular Sciences19 ( 23 ) 1 - 8   2017.12Hepatitis C Virus: Viral Quasispecies and GenotypeInvited Reviewed

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    DOI: doi:10.3390/ijms19010023

  • Kyoko Tsukiyama-Kohara, Michinori Kohara .  Hepatitis C Virus: Viral Quasispecies and Genotypes. .  International journal of molecular sciences19 ( 1 )   2017.12Reviewed International journal

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    Hepatitis C virus (HCV) mainly replicates in the cytoplasm, where it easily establishes persistent infection, resulting in chronic hepatitis, liver cirrhosis, and hepatocellular carcinoma. Due to its high rate of mutation, HCV forms viral quasispecies, categorized based on the highly variable regions in the envelope protein and nonstructural 5A protein. HCV possesses seven major genotypes, among which genotype 1 is the most prevalent globally. The distribution of HCV genotypes varies based on geography, and each genotype has a different sensitivity to interferon treatment. Recently-developed direct-acting antivirals (DAAs), which target viral proteases or polymerases, mediate drastically better antiviral effects than previous therapeutics. Although treatment with DAAs has led to the development of drug-resistant HCV mutants, the most recently approved DAAs show improved pan-genomic activity, with a higher barrier to viral resistance.

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  • Nze-Nkogue C, Horie M, Fujita S, Inoue E, Akomo-Okoue EF, Ozawa M, Ngomanda A, Yamagiwa J, Tsukiyama-Kohara K. .  Identification and molecular characterization of novel primate bocaparvoviruses from wild western lowland gorillas of Moukalaba-Doudou National Park, Gabon. .  Infect Genet Evol.53   30 - 37   2017.9Identification and molecular characterization of novel primate bocaparvoviruses from wild western lowland gorillas of Moukalaba-Doudou National Park, Gabon.Reviewed

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    DOI: 10.1016/j.meegid.2017.05.004.

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  • Chimene NZE NKOGUE .  Epidemiological study of viruses infecting western lowland gorillas in Moukalaba-Doudou National Park (Gabon) .      2017.9Epidemiological study of viruses infecting western lowland gorillas in Moukalaba-Doudou National Park (Gabon)Reviewed

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  • Kayesh MEH, Ezzikouri S, Chi H, Sanada T, Hayashi, Y., Rebbani, K., Kitab, B., Matuu, A., Miyoshi, N., Hishima, T., Kohara, M., Tsukiyama-Kohara, K. .  Oxidative Stress and Immune Responses During Hepatitis C Virus Infection in Tupaia belangeri. .  Scientific Reports7 ( 1 ) 9848 - 9861   2017.8Oxidative Stress and Immune Responses During Hepatitis C Virus Infection in Tupaia belangeri. Reviewed

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    DOI: 10.1038/s41598-017-10329-7.

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  • Kayesh ME*, Kitab B*, Sanada T, Hayasaka D, Morita K, Kohara M, Tsukiyama-Kohara K .  Susceptibility of tupaia cells to dengue virus infection and their initial immune response. .  Infection Genetics and Evolution51   203 - 210   2017.7Susceptibility of tupaia cells to dengue virus infection and their initial immune response.Reviewed

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    DOI: 10.1016/j.meegid.2017.04.003.

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  • KAYESH MEH, EZZIKOURI S, CHI H, SANADA T, YAMAMOTO N, KITAB B, HARAGUCHI T, MATUYAMA R, NKOGUE CN, HATAI H, MIYOSHI N, MURAKAMI S, TANAKA Y, TAKANO J, SHIOGAMA Y, YASUTOMI Y, KOHARA M, TSUKIYAMA-KOHARA K. .  Interferon-β response is impaired by hepatitis B virus infection in Tupaia belangeri. .  VIRUS RESEARCH237   47 - 57   2017.6Interferon-β response is impaired by hepatitis B virus infection in Tupaia belangeri. Reviewed

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    DOI: 10.1016/j.virusres.2017.05.013.

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  • Tokunaga Y, Osawa Y, Ohtsuki T, Hayashi Y, Yamaji K, Yamane D, Hara M, Munekata K, Tsukiyama-Kohara K, Hishima T, Kojima S, Kimura K, Kohara M. .  Selective inhibitor of Wnt/β-catenin/CBP signaling ameliorates hepatitis C virus-induced liver fibrosis in mouse model. .  Sci Rep.7 ( 1 ) 325   2017.3Selective inhibitor of Wnt/β-catenin/CBP signaling ameliorates hepatitis C virus-induced liver fibrosis in mouse model.Reviewed

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    DOI: 10.1038/s41598-017-00282-w.

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  • Chime`ne Nze Nkogue, Masayuki Horie, Shiho Fujita, Michiko Ogino, Yuki Kobayashi, Keijiro Mizukami, Tatsunori Masatani, Sayeh Ezzikouri, Aya Matsuu, Tetsuya Mizutani, Makoto Ozawa, Osamu Yamato, Alfred Ngomanda, Juichi Yamagiwa, Kyoko Tsukiyama-Kohara .  Molecular epidemiological study of adenovirus infecting western lowland gorillas and humans in and around Moukalaba-Doudou National Park (Gabon) .  Virus Genes52 ( 5 ) 671 - 678   2016.10Molecular epidemiological study of adenovirus infecting western lowland gorillas and humans in and around Moukalaba-Doudou National Park (Gabon)Reviewed

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    DOI: 10.1007/s11262-016-1360-8

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  • Sayeh Ezzikouri, Fatima Zahra Jadid, Salsabil Hamdi, Kyoko Tsukiyama-Kohara, Soumaya Benjelloun .  Supplementation of Pycnogenol to conventional treatment may improve type 2 diabetes-associated with Hepatitis C Therapy .  Journal of Clinical and Translational Hepatology4 ( 3 ) 228 - 233   2016.9Supplementation of Pycnogenol to conventional treatment may improve type 2 diabetes-associated with Hepatitis C TherapyReviewed

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  • Takahisa Kouwaki, Yoshimi Fukushima, Takuji Daito, Naoki Yamamoto, Edin J Mifsud, Chean Ring Leong, Kyoko Tsukiyama-Kohara, Michinori Kohara, Misako Matsumoto, Tsukasa Seya, Hiroyuki Oshiumi .  Exosome RNA Released by Hepatocytes Regulates Innate Immune Responses to Hepatitis B Virus Infection .  Frontiers in Immunology7   335   2016.8Exosome RNA Released by Hepatocytes Regulates Innate Immune Responses to Hepatitis B Virus InfectionReviewed

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    DOI: 10.3389/fimmu.2016.00335.

  • Hai-Ying C, Nagano K, Ezzikouri S, Yamaguchi C, Kayesh ME, Rebbani K, Kitab B, Nakano H, Kouji H, Kohara M, Tsukiyama-Kohara K. .  Establishment of an intermittent cold stress model using Tupaia belangeri and evaluation of compound C737 targeting neuron-restrictive silencer factor. .  Exp. Anim.65 ( 3 ) 285 - 292   2016.7Establishment of an intermittent cold stress model using Tupaia belangeri and evaluation of compound C737 targeting neuron-restrictive silencer factor.Reviewed

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    DOI: 10.1538/expanim.15-0123.

  • Rebban, K & iTsukiyama-Kohara, K. .  HCV-Induced Oxidative Stress: Battlefield-Winning Strategy .  Oxidative Medicine and Cellular Longevity2016 ( 2016 ) 7425628   2016.5HCV-Induced Oxidative Stress: Battlefield-Winning StrategyInvited Reviewed

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    DOI: http://dx.doi.org/10.1155/2016/7425628

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  • Kanda T, Ozawa M, Tsukiyama-Kohara K .  IRES-mediated translation of foot-andmouth disease virus (FMDV) in cultured cells derived from FMDV-susceptible and -insusceptible animals .  BMC Veterinary Research12   66   2016.3IRES-mediated translation of foot-andmouth disease virus (FMDV) in cultured cells derived from FMDV-susceptible and -insusceptible animalsReviewed

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    DOI: 10.1186/s12917-016-0694-8

  • Sanada, T., Tsukiyama-Kohara, K., Yamamoto, N., Ezzikouri, S., Benjelloun, S., Murakami, S., Tanaka, Y., Tateno, C., Kohara, M. .  Property of hepatitis B virus replication in tupaia belangeri hepatocytes .  BBRC8 ( 469 ) 229 - 235   2016.1Property of hepatitis B virus replication in tupaia belangeri hepatocytesReviewed

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  • Khadija Rhebbani, Kyoko Tsukiyama-Kohara .  DHCR24:A Novel HCC Biomaker at a Glance .  Clinical Microbiology4 ( 6 ) 1000228   2015.12DHCR24:A Novel HCC Biomaker at a GlanceInvited Reviewed

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  • Masatani T, Ozawa M, Yamada K, Ito N, Horie M, Matsuu A, Okuya K, Tsukiyama-Kohara K, Sugiyama M, Nishizono A. .  Contribution of the interaction between rabies virus P protein and IKKε to the inhibition of type I interferon induction signaling. .  J Gen. Virol.   2015.12Contribution of the interaction between rabies virus P protein and IKKε to the inhibition of type I interferon induction signaling.Reviewed

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  • Ohtsuki T, Kimura K, Tokunaga Y, Tsukiyama-Kohara K, Tateno C, Hayashi Y, Hishima T, Kohara M. .  M2 macrophages play critical roles in progression of inflammatory liver disease in hepatitis C virus transgenic mice. .  J Virol.14 ( 90 ) 307 - 309   2015.10M2 macrophages play critical roles in progression of inflammatory liver disease in hepatitis C virus transgenic mice.Reviewed

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  • Okuya K, Kawabata T, Nagano K, Tsukiyama-Kohara K, Kusumoto I, Takase K, Ozawa M. .  Isolation and characterization of influenza A viruses from environmental water at an overwintering site of migratory birds in Japan. .  Arch Virol.   2015.9Isolation and characterization of influenza A viruses from environmental water at an overwintering site of migratory birds in Japan.Reviewed

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  • Full genome sequences of torque teno sus virus strains that coinfected a pig with postweaning multisystemic wasting syndrome in Japan: implications for genetic diversity. .      2015.9Full genome sequences of torque teno sus virus strains that coinfected a pig with postweaning multisystemic wasting syndrome in Japan: implications for genetic diversity.Reviewed

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  • Miura R, Kooriyama T, Yoneda M, Takenaka A, Doki M, Goto Y, Sanjoba C, Endo Y, Fujiyuki T, Sugai A, Tsukiyama-Kohara K, Matsumoto Y, Sato H, Kai C. .  Efficacy of Recombinant Canine Distemper Virus Expressing Leishmania Antigen against Leishmania Challenge in Dogs. .  PLoS Negl Trop Dis.10 ( 9 ) e0003914   2015.7Efficacy of Recombinant Canine Distemper Virus Expressing Leishmania Antigen against Leishmania Challenge in Dogs.Reviewed

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  • Matsuu A, Hobo S, Ando K, Sanekata T, Sato F, Endo Y, Amaya T, Osaki T, Horie M, Masatani T, Ozawa M, Tsukiyama-Kohara K .  Genetic and serological surveillance for non-primate hepacivirus inhorses in Japan .  Veterinary Microbiologyin press   2015.6Genetic and serological surveillance for non-primate hepacivirus inhorses in JapanReviewed

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  • Sayeh Ezzikouri, Kiminori Kimura, Hajime Sunagozaka, Shuichi Kaneko, Kazuaki Inoue, Tomohiro Nishimura, Tsunekazu Hishima, Michinori Kohara, and Kyoko Tsukiyama-Kohara .  Serum DHCR24 auto-antibody as a new biomarker for progression of hepatitis C .  EBioMedicine2   604 - 612   2015.4Serum DHCR24 auto-antibody as a new biomarker for progression of hepatitis C Reviewed

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  • Makoto Saito, Takashi Takano, Tomohiro Nishimura, Michinori Kohara, Kyoko Tsukiyama-Kohara .  3β-Hydroxysterol Δ24-reductase on the Surface of Hepatitis C Virus-related Hepatocellular Carcinoma Cells can be a Target for Molecular Targeting Therapy .  PLoS One   e0124197   2015.43β-Hydroxysterol Δ24-reductase on the Surface of Hepatitis C Virus-related Hepatocellular Carcinoma Cells can be a Target for Molecular Targeting TherapyReviewed

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  • Ozawa M, Matsuu A, Yonezawa K, Igarashi M, Okuya K, Kawabata T, Ito K, Tsukiyama-Kohara K, Taneno A, Deguchi E. .  Efficient isolation of Swine influenza viruses by age-targeted specimen collection. .  J Clin Microbiol. 201553 ( 4 ) 1331 - 1338   2015.4Efficient isolation of Swine influenza viruses by age-targeted specimen collection.Reviewed

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  • 新井 正明 .  Establishment of evaluation systems of antiviral agents for hepatitis C virus and analysis of cyclophilin inhibitors as anti-HCV drugs .      2015.3Establishment of evaluation systems of antiviral agents for hepatitis C virus and analysis of cyclophilin inhibitors as anti-HCV drugsReviewed

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    Language:English   Publishing type:Doctoral thesis  

  • Ezzikouri S, Nishimura T, Kohara M, Benjelloun S, Kino Y, Inoue K, Matsumori A, Tsukiyama-Kohara K .  Inhibitory Effects of PycnogenolR on Hepatitis C Virus Replication .  Antiviral Research113   93 - 102   2015.1Inhibitory Effects of PycnogenolR on Hepatitis C Virus ReplicationReviewed

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  • Takenaka A, Yoneda M, Seki T, Uema M, Kooriyama T, Nishi T, Fujita K, Miura R, Tsukiyama-Kohara K, Sato H, Kai C. .  Characterization of two recent Japanese field isolates of canine distemper virus and examination of the avirulent strain utility as an attenuated vaccine. .  Vet Microbiol. 174 ( 42067 ) 372 - 381   2014.12Characterization of two recent Japanese field isolates of canine distemper virus and examination of the avirulent strain utility as an attenuated vaccine.Reviewed

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  • Kyoko Tsukiyama-Kohara and Michinori Kohara .  Tupaia belangeri as an experimental animal model for viral infection .  Experimental Animal63 ( 4 ) 367 - 374   2014.10Tupaia belangeri as an experimental animal model for viral infectionReviewed

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  • Mohammad Zare-Bidaki, Kyoko Tsukiyama-Kohara, Mohammad Kazemi Arababadi .  Toll like receptor 4 and hepatitis B infection; molecular mechanisms and pathogenesis .  Viral Immunology27 ( 7 ) 321 - 326   2014.9Toll like receptor 4 and hepatitis B infection; molecular mechanisms and pathogenesisReviewed

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  • Ezzikouri S, Ozawa M, Kohara M, Elmdaghri N, Benjelloun S, Tsukiyama-Kohara K. .  Recent insights into hepatitis B virus-host interactions. .  J Med Virol.86 ( 6 ) 925 - 932   2014.6Recent insights into hepatitis B virus-host interactions.Reviewed

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  • Arai M, Tsukiyama-Kohara K, Takagi A, Tobita Y, Inoue K, Kohara M. .  Resistance to cyclosporin A derives from mutations in hepatitis C virus nonstructural proteins. .  Biochem Biophys Res Commun.448 ( 1 ) 56 - 62   2014.5Resistance to cyclosporin A derives from mutations in hepatitis C virus nonstructural proteins.Reviewed

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  • Kasama Y, Mizukami T, Kusunoki H, Peveling-Oberhag J, Nishito Y, Ozawa M, Kohara M, Mizuochi T, Tsukiyama-Kohara K. .  B-Cell-Intrinsic Hepatitis C Virus Expression Leads to B-Cell-Lymphomagenesis and Induction of NF-κB Signalling. .  PLos One9 ( 3 ) e91373   2014.3B-Cell-Intrinsic Hepatitis C Virus Expression Leads to B-Cell-Lymphomagenesis and Induction of NF-κB Signalling.Reviewed

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  • 勝目朝夫 .  Preclinical evaluation of an anti-interleukin 6 receptor antibody for Castleman's disease and a serene palmitoyltransferase inhibitor as an antiviral agent for hepatitis C virus .      2014.3Preclinical evaluation of an anti-interleukin 6 receptor antibody for Castleman's disease and a serene palmitoyltransferase inhibitor as an antiviral agent for hepatitis C virusReviewed

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  • Katsume A, Tokunaga Y, Hirata Y, Munakata T, Saito M, Hayashi H, Okamoto Y, Kusanagi I, Fujiwara S, Klumpp K, Tsukiyama-Kohara K, El-Gohary A, Sudoh M, Kohara M .  A serine palmitoyltransferase inhibitor blocks hepatitis C virus replication in human hepatocytes .  Gastroenterology145   865 - 873   2013.10A serine palmitoyltransferase inhibitor blocks hepatitis C virus replication in human hepatocytesReviewed

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  • Kyoko Tsukiyama-Kohara, Asao Katsume,Kazuhiro Kimura, Masayuki Saito, and MichinoriKohara .  4E-BP1 regulates the differentiation of white adipose tissue .  Genes to Cells18 ( 7 ) 602 - 607   2013.74E-BP1 regulates the differentiation of white adipose tissueReviewed

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  • Nakagawa S, Hirata Y, Kameyama T, Tokunaga Y,Nishito Y, Yano J, Ochiya T, Tateno C, MizokamiM, Tsukiyama-Kohara K, Inoue K, Yoshiba M,Takaoka A, Kohara M. .  Targeted induction of interferon-λ in humanized chimeric mouse liver abrogates hepatotropic virusinfection. .  PLoS Onee59611   2013.3Targeted induction of interferon-λ in humanized chimeric mouse liver abrogates hepatotropic virusinfection.Reviewed

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  • Salem NE, Saito M, Kasama Y, Ozawa M,Kawabata T, Harada S, Suda H, Asonuma K, El-Gohary A, Tsukiyama-Kohara, K. .  Genomic polymorphisms in 3β-hydroxysterol Δ24-reductase promoter sequences. .  Microbiol. Immunol.57   179 - 184   2013.3Genomic polymorphisms in 3β-hydroxysterol Δ24-reductase promoter sequences.Reviewed

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  • S. Sekiguchi, K. Kimura, T. Chiyo, T. Ohtsuki, Y. Tobita, Y. Tokunaga, F. Yasui, K. Tsukiyama-Kohara, T. Wakita, T. Tanaka, M. Miyasaka, K. Mizuno, Y. Hayashi, T. Hishima, K. Matsushima and M. Kohara .  Immunization with a recombinant vaccinia virus that encodes nonstructural proteins of the hepatitis C virus suppresses viral protein levels in mouse liver. .  Pros Onee51656   2012.11Immunization with a recombinant vaccinia virus that encodes nonstructural proteins of the hepatitis C virus suppresses viral protein levels in mouse liver.Reviewed

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  • K. Inoue, K. Tsukiyama-Kohara, C. Matsuda, M. Yoneyama, T. Fujita, S. Kuge, M. Yoshiba, and *M. Kohara. .  Impairment of interferon regulatory factor-3 activation by hepatitis C virus core protein basic amino acid region 1. .  Biochem. Biophys. Res. Com. 428   494 - 499   2012.10Impairment of interferon regulatory factor-3 activation by hepatitis C virus core protein basic amino acid region 1. Reviewed

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  • Saito M, Kohara M, *Tsukiyama-Kohara K. .  Hepatitis C virus promotes expression of the 3β-hydroxysterol δ24-reductase through Sp1. .  Journal of Medical Virology84 ( 5 ) 733 - 746   2012.5Hepatitis C virus promotes expression of the 3β-hydroxysterol δ24-reductase through Sp1.Reviewed

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  • Y. Kasama, M. Saito, T. Takano, T. Nishimura, M. Satoh, Z. Wang, S.N. E. S. Ali, S. Harada, M. Kohara, and *K. Tsukiyama-Kohara. .  Translocase of outer mitochondrial membrane 70 induces interferon response and is impaired by hepatitis C virus NS3. .  Virus Research 163 ( 1 ) 405 - 409   2012.1Translocase of outer mitochondrial membrane 70 induces interferon response and is impaired by hepatitis C virus NS3.Reviewed

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  • M. Satoh, M. Saito, T.Takano, Y. Kasama, T. Nishimura, Y. Nishito, Y. Hirata, M. Arai, M. Sudoh, C. Kai, M. Kohara and *K. Tsukiyama-Kohara .  Monoclonal antibody 2-152a suppresses hepatitis C virus infection thorough betaine/GABA transporter-1. .  Journal of Infectious Diseses204   1172 - 1180   2011.10Monoclonal antibody 2-152a suppresses hepatitis C virus infection thorough betaine/GABA transporter-1. Reviewed

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  • T. Takano, *K. Tsukiyama-Kohara, M. Hayashi, Y. Hirata, M. Satoh, C. Tateno, Y. Hayashi, T. Hishima, N. Funata, M. Sudo, and M. Kohara. .  Augmentation of DHCR24 expression by hepatitis C virus infection facilitates viral replication in hepatocytes. .  Journal of Hepatology55   512 - 521   2011.8Augmentation of DHCR24 expression by hepatitis C virus infection facilitates viral replication in hepatocytes.Reviewed

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  • Y. Kasama, M. Satoh, M. Saito, S. Okada, C. Kai and *K. Tsukiyama-Kohara. .  Evaluation of a recombinant measles virus as the expression vector of hepatitis C virs envelope proteins. .  World Journal of Vaccine1   98 - 103   2011.8Evaluation of a recombinant measles virus as the expression vector of hepatitis C virs envelope proteins. Reviewed

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  • K. Tsukiyama-Kohara, S. Sekiguchi, Y. Kasama, N. E. S. Ali, K. Machida and M. Kohara .  Hepatitis C virus-related lymphomagenesis in a mouse model. .  ISRN Hematology2011   2011.6Hepatitis C virus-related lymphomagenesis in a mouse model. Reviewed

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  • T. Takano, M. Kohara, M. Kasama, T. Nishimura, M. Saito, C. Kai and *K. Tsukiyama-Kohara .  Translocase of outer mitochondrial membrane 70 expression is induced by hepatitis C virus and is related to the apoptotic response. .  Journal of Medical Virology83   801 - 809   2011.3Translocase of outer mitochondrial membrane 70 expression is induced by hepatitis C virus and is related to the apoptotic response.Reviewed

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  • Selective translation of the measles virus nucleocapsid mRNA by la protein. Y. Inoue, H. Sato, K. Fujita, K. Tsukiyama-Kohara, M.Yoneda, and *C. Kai. .  Selective translation of the measles virus nucleocapsid mRNA by la protein. .  Front. Microbiol. 2   173   2011.1Selective translation of the measles virus nucleocapsid mRNA by la protein.Reviewed

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Books

  • Host targeting antivirals for treatment of hepatitis C International journal

    Bouchra Kitab, Michinori Kohara and Kyoko Tsukiyama-Kohara( Role: Joint author ,  corresponding author)

    IntechOpen  2021.7 

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    Total pages:245   Responsible for pages:47-56   Language:English Book type:Scholarly book

    DOI: 10.5772/intechopen.91512

MISC

  • Basic study for vaccine development targeting virus infections

    Tsukiyama-Kohara K.

    Viruses   14 ( 1 )   2022.1

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    Language:Japanese   Publisher:Viruses  

    DOI: 10.3390/v14010057

    Scopus

    PubMed

  • HIGH ANTI-HBS INDUCTION BY RETREATMENT OF A NASAL ADMINISTRATIVE THERAPEUTIC VACCINE CONTAINING HBsAg AND HBCAG MIXED WITH MUCOADHESIVE CVP (CVP-NASVAC) IN CHRONIC HBV INFECTED PATIENTS

    Osamu Yoshida, Kana Shiraishi, Takahiro Sanada, Michinori Kohara, Kyoko Tsukiyama-Kohara, Takashi Miyazaki, Taizou Kamishita, Mamun Mahtab, Julio C. Aguilar, Gerardo E. Guillen, Yoshio Tokumoto, Sheikh Mohamed Fazle Akbar, Yoichi Hiasa

    HEPATOLOGY   74   507A - 508A   2021.10

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    Language:English   Publishing type:Research paper, summary (international conference)   Publisher:WILEY  

    Web of Science

  • Targeted macrocycles hamper hemagglutinin adsorption and fusion, and have antiviral effects in murine and macaque models of influenza

    齊藤誠, 伊藤靖, 安井文彦, 棟方翼, 山根大典, 小沢真, 山地賢三郎, 山本直樹, 本田智子, 真田崇弘, 小原恭子, 菅裕明, 小原道法

    日本分子生物学会年会プログラム・要旨集(Web)   44th   2021

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  • B型肝炎に対する予防と治療を目的とする経鼻ワクチンの開発

    吉田理, AKBAR SMF, 今井祐輔, 白石佳奈, 真田孝弘, 小原恭子, 宮崎隆, 上下泰造, 小原道法, 日浅陽一

    がん予防学術大会プログラム・抄録集   2021 (CD-ROM)   2021

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  • 乳腺腫瘍の自然発症新規動物モデル・ツパイでの病理学的解析

    池海英, 一二三達郎, 畑井仁, 三好宣彰, 矢吹映, 木村真輔, 小原道法, 小原恭子

    日本生化学会大会(Web)   90th   2017

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  • C型肝炎ウイルスによる肝がん発症機構

    小原道法、小原恭子

    別冊BioClinica   5 ( 1 )   14 - 18   2016.2

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    Language:Japanese   Publishing type:Article, review, commentary, editorial, etc. (bulletin of university, research institution)   Publisher:北隆館  

  • C型肝炎ウイルス感染動物モデル

    小原恭子、小原道法

    ウイルス   65 ( 2 )   255 - 262   2015.12

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  • Role of Oxidative stress in hepatocarcinogenesis induced by hepatitis C virus. Reviewed

    *K. Tsukiyama-Kohara.

    Int. J. Mol. Sci.   13   15271 - 15278   2012.11

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  • 肝炎ウイルスモデル

    小原道法、木村公則、小原恭子

    Animal Models がん(中村卓郎編)   346 - 355   2012.10

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    Language:Japanese   Publishing type:Article, review, commentary, editorial, etc. (scientific journal)  

  • C型肝炎ウイルス感染モデル

    小原道法、木村公則、小原恭子

    Animal Models 感染症(野本明男、喜多正和編)   188-197   2012.7

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Presentations

  • Yutaro Ide, Bouchra Kitab, Nobumasa Ito, Riai Okamoto, Yui Tamura, Takafumi Matsui, Yoshihiro Sakoda, and Kyoko Tsukiyama-Kohara   Characterization of host factors associated with the internal ribosomal entry sites of foot-and-mouth disease and classical swine fever viruses   International coauthorship International conference

    International Union of Microbiological Society2022  2022.7 

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    Event date: 2022.7

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Rotterdam  

  • Makoto Saito, Yasushi Itoh, Fumihiko Yasui, Tsubasa Munakata, Daisuke Yamane, Makoto Ozawa, Risa Ito, Kenzaburo Yamaji, Naoki Yamamoto, Tomoko Honda, Takahiro Sanada, Kyoko Tsukiyama-Kohara, Hiroaki Suga, and Michinori Kohara.   Macrocycles targeting influenza virus HA show antiviral effects by hampering adsorption and fusion, which result in vivo antiviral effects in Murine and Macaque model.   International conference

    IUMS2022  2022.7  IUMS

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    Event date: 2022.7

    Language:English   Presentation type:Oral presentation (general)  

    Venue:Rotterdam  

  • Asako Takagi, Yutaka Amako, Daisuke, Yamane, Bouchra Kitab, Yuko Tokunaga, Ahmed El-Gohary, Michinori Kohara, Kyoko Tsukiyama-Kohara   Longer poly(U) stretches in the 3UTR are essential for replication of the hepatitis C virus genotype 4a clone.   International coauthorship

    JCA2022  2022.9 

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    Event date: 2022.9

    Language:English   Presentation type:Poster presentation  

  • 齊藤誠、伊藤靖、安井文彦、棟方翼、山根大典、小澤真、山地賢三郎、山本直樹、本田智子、真田崇弘、○小原恭子、菅裕明、小原道法   インフルエンザウイルスHAを標的とした特殊環状ペプチドの発症阻害機序  

    第30回抗ウイルス療法学会  2022.9  抗ウイルス療法学会

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    Event date: 2022.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:京都  

  • 井手優太郎、Bouchra Kitab, 迫田義博、小原恭子   口蹄疫ウイルスおよび豚熱ウイルスRNAのIRES機能に関連する宿主因子の特性について   International coauthorship

    第165回日本獣医学会学術集会  2022.9  日本獣医学会

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    Event date: 2022.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京  

  • 後迫玄城,村山典恵,小原恭子,山崎浩史,宇野泰広   ツパイCYP2A13 の同定と解析  

    第165回日本獣医学会学術集会  2022.9  日本獣医学会

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    Event date: 2022.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:東京  

  • Md Abul Hashem, Mohammad Enamul Hoque Kayesh, Kyoko Tsukiyama-Kohara   Subtype distribution and expression of the koala retrovirus in koala from the Japanese zoo.   International coauthorship

    2022.9 

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    Event date: 2022.9

    Language:English   Presentation type:Oral presentation (general)  

  • Asako Takagi, Yutaka Amako, Daisuke, Yamane, Bouchra Kitab, Ahmed El-Gohary, Michinori Kohara, Kyoko Tsukiyama-Kohara.   Longer poly(U) stretches in the 3UTR are essential for replication of the hepatitis C virus genotype 4a clone in vitro and in vivo.   International coauthorship International conference

    HCV-Flavi 2022  2022.7 

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    Event date: 2022.7

    Venue:Ghent  

  • Chi Hai-Ying, Yuki Tanaka, Tatsuro Hifumi, Koichiro Shoji, Mohammad Enamul Hoque Kayesh, Md Abul Hashem, Bouchra Kitab,Takahiro Sanada, Tomoko Fujiyuki, Misako Yoneda, Hitoshi Hatai, Akira Yabuki, Noriaki Miyoshi, Chieko Kai, Michinori Kohara, Kyoko Tsukiyama-Kohara   Pathological aspects of spontaneous mammary gland tumor in Tupaia belangeri (Tree shrew)  

    第79回日本癌学会学術総会  日本癌学会

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    Event date: 2020.10

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:広島  

  • 長井誠、岡林環樹、松鵜彩、藤本佳万、Md Abul Hashem、目堅博久、中尾亮、松野啓太、片山幸枝、大場真巳、大松勉、浅井鉄夫、中川敬介、伊藤啓史、斑目広郎、河合一洋、伊藤壽啓、野中成晃、小原恭子、猪島康雄、水谷哲也、三澤尚明   次世代シーケンス(NGS)を用いた豚糞便中のウイルス検索:新しいBastrovirus遺伝子の発見  

    第163回日本獣医学会学術集会  山口大学

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    Event date: 2020.9

    Language:Japanese   Presentation type:Oral presentation (general)  

  • 伊藤伸将, Graham J Belsham, 迫田義博、小原恭子   CSFVのIRES発現細胞の作成と応用  

    第163回日本獣医学会学術集会 

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    Event date: 2020.9

    Language:Japanese   Presentation type:Oral presentation (general)  

    Venue:山口大学  

  • Md Abul Hashem, Mohammad Enamul Hoque Kayesh, Fumie Maetani, Kyoko Tsukiyama-Kohara   TRANSMISSION OF KOALA RETROVIRUS FROM PARENT KOALAS TO A JOEY  

    第163回日本獣医学会学術集会 

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    Event date: 2020.9

    Language:English   Presentation type:Oral presentation (general)  

    Venue:山口大学  

  • Sayeh Ezzikouri, Kiminori Kimura, Shuichi Kaneko, Michinori Kohara, and Kyoko Tsukiyama-Kohara   Serum DHCR24 auto-antibody as a new biomarker for progression of hepatitis C   International conference

    21st International Symposium on Hepatitis C Virus and Related Viruses.  

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    Event date: 2015.10

    Language:English   Presentation type:Poster presentation  

    Venue: Strasboug (フランス)  

  • Sayeh Ezzikouri, Takahiro Sanada, Haiying Chi, Soumaya Benjelloun, Michinori Kohara, Kyoko Tsukiyama-Kohara   Horizontal and vertical transmission model of hepatitis B virus in Tupaia belangeri   International conference

    2015 International Meeting on the Molecular Biology of Hepatitis B Viruses,  

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    Event date: 2015.10

    Language:English   Presentation type:Poster presentation  

    Venue:Doce Bad Nauheim(ドイツ)  

  • Makoto Saito, Takashi Takano, Tomohiro Nishimura, Michinori Kohara, Kyoko Tsukiyama-Kohara,   DHCR24 on the Surface of HCV-related Hepatocellular Carcinoma Cells can be a Target for Molecular Targeting Therapy  

    第74回日本癌学会総会 

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    Event date: 2015.9

    Language:English   Presentation type:Oral presentation (general)  

  • Nze Nkogue C, Fujita S, Horie M, Ogino M, Kobayashi Y, Mizukami K, Masatani T, Ozawa M, Ngomanda A, Yamagiwa J, Yamato O, Mizutani T, Tsukiyama- Kohara K   Infectious disease assessment in wild gorillas in African rainforest (Gabon): case of adenovirus  

    第158回日本獣医学会学術集会 

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    Event date: 2015.9

    Language:English   Presentation type:Oral presentation (general)  

  • 松鵜 彩、所崎香識、寸田祐嗣、森田剛仁、川口博明、堀江真行、正谷達謄、中川寛子、奥谷公亮、川畑淑子、戸田重久、小原恭子、 小澤 真   2014-15年冬季に鹿児島県出水平野で分離されたH5N8亜型高病原性鳥インフルエンザウイルスの解析と感染野鳥における特徴  

    第158回日本獣医学会学術集会 

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    Event date: 2015.9

    Language:Japanese   Presentation type:Oral presentation (general)  

  • 木村公則、金子周一、小原道法、小原恭子   DHCR24自己抗体のC型肝炎新規病態マーカーとしての評価   Invited

    第11回広島肝臓プロジェクト研究センターシンポジウム 

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    Event date: 2015.7

    Language:Japanese   Presentation type:Oral presentation (general)  

  • Ezzikouri, S., Chi, H.Y.., Sanada, T., Nagano, K., Yamaguchi, C.., Kanda, T., Kanazawa, N., Okuya, K., Ueno, K., Nakagawa, H., Nkogue, C.N., Ozawa, M., Miyoshi, N., Benjelloun, S., Murakami, S., Tanaka, Y., Kohara, M., Tsukiyama-Kohara, K   Development of Tupaia belangeri for HBV persistent infection.  

    第62回日本ウイルス学会 

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    Event date: 2014.11

    Language:English   Presentation type:Poster presentation  

  • Tsukiyama-Kohara K and Kohara M.   A comprehensive study of B-lymphoma cells spontaneously developed in transgenic mice that express the full hepatitis C virus genome in B cells.  

    第37回日本分子生物学会 

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    Event date: 2014.11

    Language:Japanese   Presentation type:Poster presentation  

  • Kohara M, Tokunaga Y, Tsukiyama-Kohara K, Sudoh M.   Inhibitor Inhibits Hepatitis C Virus Replication in Human Hepatocytes.  

    第37回日本分子生物学会 

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    Event date: 2014.11

    Language:Japanese   Presentation type:Poster presentation  

  • Sanada T, Yamamoto N, Tsukiyama-Kohara K, Ezzikouri S, Tateno C, Kohara M   HBV pathogenesis and host response in Tupaia belangeri   International conference

    2014 HBV international Meeting  2014 HBV international Meeting

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    Event date: 2014.9

    Language:English  

    Venue:アメリカ  

    国際学会

  • Masaaki Arai1,2, Kyoko Tsukiyama-Kohara3,4, Asako Takagi2, Yoshimi Tobita2, Kazuaki Inoue5 and Michinori Kohara   Resistance to cyclosporin A derives from mutations in Hepatitis C virus nonstructural proteins   International conference

    HCV2014  HCV2014

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    Event date: 2014.9

    Language:English  

    Venue:カナダ  

    国際学会

  • 池海英 1, Ezzikouri, S.1,2, 真田崇弘3, 永野希織1, 山口千穂1, 神田雄大1, 金澤伯弘1, 奥谷公亮1, 上野晃聖1, 中川寛子1, Nkogue, C.N.1, 小澤真1, 三好宣彰1, 小原道法3, 小原恭子   ツパイを用いたHCV感染・発症モデル系並びに治療評価系の開発  

    日本ウイルス学会九州支部総会  日本ウイルス学会九州支部総会

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    Event date: 2014.9

    Language:Japanese  

    Venue:鹿児島  

    国内学会

  • Sayeh Ezzikouri a,b, Tomohiro Nishimura c, Michinori Kohara d, Soumaya Benjellouna, Yoichiro Kino c, Kazuaki Inouee, Akira Matsumori f, Kyoko Tsukiyama-Koharab   Inhibitory Effects of PycnogenolR on Hepatitis C Virus Replication  

    日本ウイルス学会九州支部総会  日本ウイルス学会九州支部総会

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    Event date: 2014.9

    Language:Japanese  

    Venue:鹿児島  

    国内学会

  • Nze Nkogue C1,2, Fujita S3, Ogino M2, Mizukami K3, Masatani T3, Ozawa M 2,3, Horie M3, Ngomanda A1, Yamagiwa J4, Yamato O 2,3, Mizutani T6, Tsukiyama- Kohara K   Infectious disease assessment in wild gorillas in African rainforest (Gabon): case of adenovirus  

    第157回日本獣医学会  第157回日本獣医学会

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    Event date: 2014.9

    Language:Japanese  

    Venue:北海道  

    国内学会

  • 奥谷 公亮、川畑 淑子、永野 希織、小原 恭子、楠元 勇、高瀬 公三、小澤 真   ツルのインフルエンザウイルスに対する感受性の検討  

    第157回日本獣医学会  第157回日本獣医学会

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    Event date: 2014.9

    Language:Japanese  

    Venue:北海道  

    国内学会

  • 小澤真、川畑淑子、奥谷公亮、永野希織、神田雄大、金澤伯弘、小原恭子、出口栄三郎   豚トルクテノウイルスの遺伝的多様性  

    第157回日本獣医学会  第157回日本獣医学会

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    Event date: 2014.9

    Language:Japanese  

    Venue:北海道  

    国内学会

  • Sayeh E, Kohara M, Kohara K   Inhibitory Effects of Pycnogenol on Hepatitis C Virus Replication  

    第73回日本癌学会  第73回日本癌学会

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    Event date: 2014.9

    Language:Japanese  

    Venue:神奈川  

    国内学会

  • Kyoko Tsukiyama-Kohara, Michinori Kohara, and Yuri Kasama   Comprehensive analysis of B-lymphoma cells spontaneously developed in transgenic mice that express the full hepatitis C virus genome in B cells   International conference

    第16回国際ウイルス学会(ICV2014)  第16回国際ウイルス学会(ICV2014)

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    Event date: 2014.7

    Language:English  

    Venue:カナダ  

    国際学会

  • Tsukiyama-Kohara K., Kohara M.   Tumorigenicity inducued by hepatitis C virus.   International conference

    第4回新学術領域 発がんスパイラル国際シンポジウム  第4回新学術領域 発がんスパイラル国際シンポジウム

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    Event date: 2014.2

    Language:English  

    Venue:札幌  

    国際学会

  • Tsukiyama-Kohara, K, Hirata, Y., Sanada T, Yamamoto N., Sayeh, E., Yasui F, Kohara, M.   Development of Tupaia belangeri for small animal infection model of hepatitis B virus, according to the genomic research  

    第36回日本分子生物学会  第36回日本分子生物学会

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    Event date: 2013.12

    Language:Japanese  

    Venue:神戸  

    国内学会

  • Tsukiyama-Kohara, K, Hirata, Y.,Sanada T, Yamamoto N., Yasui F, Kohara, M   Development of tupaia nelangeri for small animal infection model of hepatitis B virus, according to the genomid research   International conference

    HBV2013  HBV2013

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    Event date: 2013.10

    Language:English  

    Venue:上海  

    国際学会

  • Tsukiyama-Kohara, K, Kasama, Y, Kohara, M   Critical factors in HCV related B-cell lymphoma development characterized by comprehensive analysis of B-lymphoma cells in the HCV transgenic mice   International conference

    20th HCV Symposium  20th HCV Symposium

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    Event date: 2013.10

    Language:English  

    Venue:オーストラリア  

    国際学会

  • 笠間由里、小原道法、小原恭子   C型肝炎誘発性リンパ腫発症モデルマウスの網羅的解析  

    第72回日本癌学会学術総会  第72回日本癌学会学術総会

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    Event date: 2013.10

    Language:Japanese  

    Venue:パシフィコ横浜  

    国内学会

  • 徳永優子、平田雄一、小原恭子、小原道法   宿主因子阻害剤NA808と直接的複製阻害剤の併用による抗HCV活性  

    第72回日本癌学会学術総会  第72回日本癌学会学術総会

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    Event date: 2013.10

    Language:Japanese  

    Venue:パシフィコ横浜  

    国内学会

  • 金澤伯弘、川畑淑子、永野希織、小原道法、小澤真、小原恭子   ツパイとヒトとの遺伝的相同性の検証  

    第156回日本獣医学会学術集会  第156回日本獣医学会学術集会

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    Event date: 2013.9

    Language:Japanese  

    Venue:岐阜大学  

    国内学会

  • 小澤真、川畑淑子、出口栄三郎、小原恭子   養豚における抗インフルエンザウイルス抗体の保有状況  

    第156回日本獣医学会学術集会  第156回日本獣医学会学術集会

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    Event date: 2013.9

    Language:Japanese  

    Venue:岐阜大学  

    国内学会

  • 神田雄大、小澤真、小原恭子   口蹄疫ウイルスのIRES依存性翻訳活性の評価  

    第156回日本獣医学会学術集会  第156回日本獣医学会学術集会

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    Event date: 2013.9

    Language:Japanese  

    Venue:岐阜大学  

    国内学会

  • Sayeh EZZIKOURI, Tomohiro Nishimura, Makoto Ozawa, Michinori Kohara and Kyoko Tsukiyama-Kohara   Efficacy of French maritime pine bark extract pycnogenolR to hepatitis C virus replication  

    ウイルス学会九州支部会  ウイルス学会九州支部会

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    Event date: 2013.9

    Language:Japanese  

    Venue:長崎大学医学部  

    国内学会

  • 笠間由里、小原道法、小原恭子   C型肝炎ウイルスのBリンパ腫発症要因の解明  

    第50回日本ウイルス学会九州支部会  第50回日本ウイルス学会九州支部会

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    Event date: 2013.9

    Language:Japanese  

    Venue:長崎大学 医学部  

    国内学会

  • 小原 恭子   「C型肝炎ウイルス誘導性酸化ストレスによる肝細胞腫瘍原性亢進」(招待講演)  

    第24回日本生体防御学会  第24回日本生体防御学会

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    Event date: 2013.7

    Language:Japanese  

    Venue:熊本  

    国内学会

  • K. Tsukiyama-Kohara, Y. Amako, M. Kohara   Chronic hepatitis C virus model in Tupaia belangeri(招待講演)   International conference

    Symposium HCV Animal models and vaccine development  Symposium HCV Animal models and vaccine development

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    Event date: 2013.5

    Language:English  

    Venue:エストニア  

    国際学会

  • Kyoko Tsukiyama-Kohara, Kiminori Kimura and Michinori Kohara   Inflammation and Cancer in Hepatitis C virus infection(招待講演)   International conference

    3rd IGAKUKEN International Symposium on "Control of Influenza and Hepatitis" Inflamation and cancer in hepatitis C virus infection  3rd IGAKUKEN International Symposium on "Control of Influenza and Hepatitis" Inflamation and cancer in hepatitis C virus infection

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    Event date: 2013.2

    Language:English  

    Venue:東京  

    国際学会

  • Takashi Takano, Kyoko Tsukiyama-Kohara, Michinori Kohara   Augmentation of DHCR24 expression by hepatitis C virus infection facilitates viral replication in hepatocytes   International conference

    Congress of European Association for the Study of the Liver (EASL2012)  Congress of European Association for the Study of the Liver (EASL2012)

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    Event date: 2012.4

    Language:English  

    Venue:スペイン(バルセロナ)  

    国際学会

  • Makoto Saito, Kyoko Tsukiyama-Kohara   Molecular target therapy for hepatitic C virus-related hepatocellular carcinoma with cell-surface expression of DHCR24  

    第70回日本癌学会総会  第70回日本癌学会総会

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    Event date: 2011.10

    Language:Japanese  

    Venue:名古屋  

    国内学会

  • Takashi Takano, Michinori Kohara, Kyoko Tsukiyama-Kohara   Augmentation of DHCR24 expression by hepatitis C virus infection facilitates viral replication in hepatocytes  

    第70回日本癌学会総会  第70回日本癌学会総会

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    Event date: 2011.10

    Language:Japanese  

    Venue:名古屋  

    国内学会

  • Nagla Elwy Salem, Tomhiro Nishimura, Makoto Saito, Michinori Kohara , Shiniji Harada, Ahmed El-Gohary,and Kyoko Tsukiyama-Kohara.   Application of DHCR24 for the diagnosis of hepatocellular carcinoma (HCC).   International conference

    International Union of Microbiological Societies 2011 Congress  International Union of Microbiological Societies 2011 Congress

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    Event date: 2011.9

    Language:English  

    Venue:Sapporo Japan  

    国際学会

  • Takashi Takano, Kyoko Tsukiyama-Kohara, Yuichi Hirata, Yuko Tokunaga, Chise Tateno, Masayuki Sudo, and Michinori Kohara   Augmentation of DHCR24 expression by hepatitis C virus infection facilitates viral replication in hepatocytes   International conference

    18th International Meeting on HCV and related viruses  18th International Meeting on HCV and related viruses

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    Event date: 2011.9

    Language:English  

    Venue:Seattle, USA  

    国際学会

  • Kyoko Tsukiyama-Kohara, Yuri Kasama, Michinori Kohara   Spontaneous development of B-cell lymphomas by persistent expression of the full genome of hepatitis C virus in B cells   International conference

    ASBMB2011 Recent Advance in Pathogenic Human Viruses  ASBMB2011 Recent Advance in Pathogenic Human Viruses

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    Event date: 2011.7

    Language:English  

    Venue:Guanzhou, China  

    国際学会

  • Asako Takagi, Yutaka Amako, Daisuke, Yamane, Bouchra Kitab, Yuko Tokunaga, Ahmed El-Gohary, Michinori Kohara, Kyoko Tsukiyama-Kohara   Longer poly(U) stretches in the 3UTR are essential for replication of the hepatitis C virus genotype 4a clone.  

    2022.9 

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    Language:English   Presentation type:Poster presentation  

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Intellectual Property

  • 口蹄疫ウイルスIRES発現細胞

    小原 恭子

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    Applicant:国立大学法人 鹿児島大学

    Application no:特願2018-099496  Date applied:2018.5

    Announcement no:特開2019-013215  Date announced:2019.1

    J-GLOBAL

  • 経鼻B型肝炎ワクチン組成物およびその製造方法

    上下泰造、宮崎隆、小原道法、真田崇裕、日浅陽一、吉田理、小原恭子、長谷川秀樹

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    Application no:特願2017-195262  Date applied:2017.10

    Country of applicant:Domestic  

  • HBs-L抗原を用いたB型肝炎予防および治療ワクチン

    小原道法、真田崇裕、日浅陽一、小原恭子、郷保正、織田康則

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    Applicant:公財)東京都医学総合研究所、愛媛大学、鹿児島大学、株)ビークル

    Application no:特願2017-138047  Date applied:2017.7

    Country of applicant:Domestic  

  • 口蹄疫ウイルスIRES発現細胞

    小原 恭子

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    Applicant:国立大学法人鹿児島大学

    Application no:特願2017-134178  Date applied:2017.7

    Country of applicant:Domestic  

  • 抗DHCR24自己抗体検出による病態診断系

    小原恭子、小原道法、木村公則、金子周一

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    Applicant:鹿児島大学、金沢大学

    Application no:特願2015-142360  Date applied:2015.7

    Country of applicant:Domestic  

  • 抗DHCR24自己抗体検出による病態診断系

    小原 恭子, 小原 道法, 木村 公則, 金子 周一

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    Applicant:国立大学法人 鹿児島大学, 国立大学法人金沢大学

    Application no:特願2015-142360  Date applied:2015.7

    Announcement no:特開2017-026351  Date announced:2017.2

    J-GLOBAL

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Research Projects

  • 口蹄疫、豚コレラウイルス由来IRES共通因子の探索と制御に向けた基礎的研究

    Grant number:20H03164  2020.4 - 2023.3

    日本学術振興会  科学研究費助成事業 基盤研究(B)  基盤研究(B)

    小原 恭子

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    Grant amount:\17680000 ( Direct Cost: \13600000 、 Indirect Cost:\4080000 )

  • Foot and mouth disease virus specific translation inhibition and application for development of disease resistant livestock

    Grant number:15K14871  2015.4 - 2017.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Challenging Exploratory Research  Grant-in-Aid for Challenging Exploratory Research

    Kohara Kyoko

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    Grant amount:\3900000 ( Direct Cost: \3000000 、 Indirect Cost:\900000 )

    FMD is a highly contagious infectious disease in cloven-hoofed animals. FMDV possess a positive sense, single stranded RNA genome. Internal ribosomal entry site (IRES) element exists within its 5′ UTR of the viral RNA. IRES mediated translation is unique translation mechanism, which are mostly observed in picornaviruses and hepacivirus. Our data indicated that IRES-mediated translational activity was not linked to FMDV host range. ITAF45 promoted IRES-mediated translation in all cell lines, and the effects of poly-pyrimidine tract binding protein (PTB) and eukaryotic initiation factor 4E-binding protein 1 (4E-BP1) were observed only in FMDV-susceptible cells. Thus, PTB and 4E-BP1 may influence the host range of FMDV. Moreover, we have established the cell line expressing FMDV-IRES reporter gene, which can be applicable for the screening of FMDV-IRES inhibitors. Thus, these findings may contribute the development of disease resistant domestic animals and novel drugs.

  • 抗ウイルス薬(あるいは抗ウイルス腫瘍薬)の開発

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    Grant type:Competitive

  • Anti-viral drug (anti viral tumor) development

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    Grant type:Competitive

  • C型肝炎ウイルスによる細胞増殖制御機構の修飾に関する研究

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    Grant type:Competitive

  • Molecular Basis of "Shut-off" mechanism by RNA virus.

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    Grant type:Competitive

  • Molecular Basis of Pathogenesis in RNA virus infection

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    Grant type:Competitive

  • RNAウイルスと翻訳開始段階の修飾

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    Grant type:Competitive

  • RNAウイルスの病原性発現機構

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    Grant type:Competitive

  • Study on Modification of Cell Growth Regulation by Hepatitis C Virus

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    Grant type:Competitive

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Social Activities

  • 獣医事審議会 臨時委員

    2020.4

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    Audience: Governmental agency

    Type:Other

  • 厚生労働省 薬事食品衛生審議会 委員

    Role(s): Advisor

    2019.10

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    Audience: Governmental agency

    Type:Other

  • 農水省 動物組み換えDNA委員会委員

    Role(s): Advisor

    2019.10

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    Audience: Governmental agency

    Type:Other

Academic Activities

  • TAD市民公開講座

    2020.9