Development of a rapid and easy method for evaluating human transmission risk based on an enzymatic activity of avian influenza virus
Project/Area Number |
20K21721
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Research Category |
Grant-in-Aid for Challenging Research (Exploratory)
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Allocation Type | Multi-year Fund |
Review Section |
Medium-sized Section 58:Society medicine, nursing, and related fields
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Research Institution | University of Shizuoka |
Principal Investigator |
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Co-Investigator(Kenkyū-buntansha) |
池田 潔 広島国際大学, 薬学部, 教授 (40168125)
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Project Period (FY) |
2020-07-30 – 2023-03-31
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Project Status |
Completed (Fiscal Year 2022)
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Budget Amount *help |
¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Fiscal Year 2022: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2021: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2020: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
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Keywords | シアリダーゼ / ノイラミニダーゼ / 酵素 / インフルエンザウイルス / 蛍光検出 |
Outline of Research at the Start |
2013年に中国でヒトに感染したH7N9型鳥ウイルスのノイラミニダーゼ遺伝子の発現細胞で酵素活性の性状を、ヒトウイルスおよび通常の鳥ウイルスと比較して、ヒト伝播の要因の候補となるノイラミニダーゼの酵素性状を探索する。さらに、その酵素性状の迅速簡易測定法を開発する。その酵素性状がヒト細胞へのウイルス感染増殖性に影響するのかを調査することで、ヒト伝播に関わるノイラミニダーゼの酵素活性の指標を明らかにする。
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Outline of Final Research Achievements |
Cases of human infection with H7N9 avian influenza A virus have been reported in China since 2013. To elucidate the function of the viral surface glycoprotein neuraminidase (NA) associated with different host transmission from birds to humans, we investigated the enzymatic properties of NA in H7N9 avian virus isolated from humans in 2013. The properties of H7N9 avian virus NA were similar to those of most avian virus NAs and were different from those of most human virus NAs. Therefore, we identified amino acid changes in N9NA responsible for the pH-dependent enzymatic property that is significantly different between avian and human virus NAs, and demonstrated that this enzymatic property has a significant effect on virus growth.
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Academic Significance and Societal Importance of the Research Achievements |
2013年にヒト感染例が多く報告された鳥インフルエンザウイルスのN9型NAの性状は、一般的な鳥ウイルスとほぼ同様であった。NAの性状の観点から、ヒト感染に関わる要因を明らかにできなかった。しかし、そのN9型NAの1系統は、中性における活性が低下していた。これは、一般的なウイルスNAの性状ではなかった。季節性ヒトウイルスNAに見られる酸性に不安定なNAや中性における活性が低下したNAは、N9型NAにおいてウイルス増殖を低下させた。これらのNAの性状は、ウイルス増殖性に大きく関わっていた。
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Report
(4 results)
Research Products
(113 results)
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[Journal Article] Ameliorating Effect of the Edible Mushroom <i>Hericium erinaceus</i> on Depressive-Like Behavior in Ovariectomized Rats2022
Author(s)
Azliza Mad Anuar, Akira Minami, Hiroshi Matsushita, Kanako Ogino, Kosei Fujita, Hatsune Nakao, Shota Kimura, Vikineswary Sabaratnam, Kaoru Umehara, Yuuki Kurebayashi, Tadanobu Takahashi, Hiroaki Kanazawa, Akihiko Wakatsuki, Takashi Suzuki, Hideyuki Takeuchi
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Journal Title
Biological and Pharmaceutical Bulletin
Volume: 45
Issue: 10
Pages: 1438-1443
DOI
ISSN
0918-6158, 1347-5215
Year and Date
2022-10-01
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] Enhancement of elastin expression by transdermal administration of sialidase isozyme Neu2.2021
Author(s)
Akira Minami, Yuka Fujita, Jun Goto, Ayano Iuchi, Kosei Fujita, Yasuyo Mikami, Mako Shiratori, Ami Ishii, Samir Mitragotri, Yasunori Iwao, Hiroaki Kanazawa, Yuuki Kurebayashi, Tadanobu Takahashi, Tadamune Otsubo, Kiyoshi Ikeda, Takashi Suzuki.
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Journal Title
Sci. Rep.
Volume: 11
Issue: 1
Pages: 3302-3302
DOI
Related Report
Peer Reviewed / Open Access
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[Presentation] 3’-Sialyllactose on Notch: Notch1 functions as a scaffold of O-linked, 3’-sialyllactosylated glycans2022
Author(s)
Yohei Tsukamoto, Kazuhiro Aoki, Yoshiki Narimatsu, Yusuke Urata, Wataru Saiki, Michael Tiemeyer, Henrik Clausen, Yuuki Kurebayashi, Akira Minami, Tadanobu Takahashi, Tetsuya Okajima, Hideyuki Takeuchi
Organizer
The annual meeting of the Society for Glycobiology(オンライン開催)
Related Report
Int'l Joint Research
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