Hepatocyte growth factor receptor is a coreceptor for adeno-associated virus type 2 infection |
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| Authors: | Kashiwakura Yuji Tamayose Kenji Iwabuchi Kazuhisa Hirai Yukihiko Shimada Takashi Matsumoto Kunio Nakamura Toshikazu Watanabe Masami Oshimi Kazuo Daida Hiroyuki |
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| Affiliation: | Department of Cardiology, Juntendo University School of Medicine, Tokyo, Japan. |
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| Abstract: | After the first attachment of virus to the cell surface through a primary receptor, efficient entry of virus requires the presence of a coreceptor. For adeno-associated virus type 2 (AAV2) infection, heparan sulfate proteoglycan is supposed as the primary receptor, and alphavbeta5 integrin and FGFR1 are reported to act as coreceptors. In this study, we were able to demonstrate that hepatocyte growth factor receptor, c-Met, is also a coreceptor for AAV2 infection. AAV2-mediated transgene analyses revealed that c-Met expression significantly up-regulated transgene expression without increasing AAV2 cell binding. Moreover, a viral overlay assay elucidated the physical interaction between AAV2 and the beta subunit of c-Met. These data suggest that c-Met plays the role of coreceptor for AAV2 infection by facilitating AAV2 internalization into the cytoplasm. |
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