2010 Fiscal Year Final Research Report
MECHANISMS FOR REPLICATION OF MEASLES AND INFLUENZA VIRUSES IN POLARIZED EPITHELIAL CELLS
Project/Area Number |
20390133
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Research Category |
Grant-in-Aid for Scientific Research (B)
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Allocation Type | Single-year Grants |
Section | 一般 |
Research Field |
Virology
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Research Institution | Kyushu University |
Principal Investigator |
MAKOTO Takeda Kyushu University, ウイルス第三部, 部長 (40311401)
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Project Period (FY) |
2008 – 2010
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Research Abstract |
Our aims in this study were identification of host factors for efficient replication of measles virus and influenza virus in epithelial cells. Previous studies have revealed that measles virus selectively infects cells of the immune system. However, we recently showed that epithelial cells that form tight junctions (polarized epithelial cells) were also susceptible to measles virus. The transcription repressor Snail causes epithelial-to-mesenchymal transition (EMT). When Snail was expressed, polarized epithelial cells lost the ability to support measles virus infection. Microarray analysis identified about 30 genes, whose expression levels were down-regulated by Snal-induced EMT. For influenza virus, cleavage of its HA protein was critical for replication. Recent studies showed that the transmembrane serine protease TMPRSS2 cleaves the HA protein. We showed that TMPRSS2 was expressed in polarized epithelial cells and supports influenza virus replication, and that its expression was down-regulated by Snail-induced EMT.
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[Journal Article] Proteolytic activation of the 1918 influenza virus hemagglutinin.2009
Author(s)
Chaipan C, Kobasa D, Bertram S, Glowacka I, Steffen I, Tsegaye TS, Takeda M, Bugge TH, Kim S, Park Y, Marzi A, Pohlmann S
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Journal Title
J Virol. 83
Pages: 3200-11
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[Presentation] Human metapneumovirus grows efficiently in Vero cells expressing transmembrane serine protease TMPRSS2.2008
Author(s)
Shirogane Y, Takeda M, Iwasaki M, Ishiguro, N, Takeuchi H, Nakatsu Y, Tahara M, Kikuta H, Yanagi Y
Organizer
The 8th Awaji International Forum on Infection and Immunity.
Place of Presentation
Awaji Island, Hyogo, Japan
Year and Date
20080900
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[Remarks] ホームページ等