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タイトル: Cell-to-cell infection by HIV contributes over half of virus infection
著者: Iwami, Shingo
Takeuchi, Junko S.
Nakaoka, Shinji
Mammano, Fabrizio
Clavel, François
Inaba, Hisashi
Kobayashi, Tomoko
Misawa, Naoko
Aihara, Kazuyuki
Koyanagi, Yoshio  kyouindb  KAKEN_id  orcid https://orcid.org/0000-0002-3007-6642 (unconfirmed)
Sato, Kei
著者名の別形: 小柳, 義夫
佐藤, 佳
発行日: 6-Oct-2015
出版者: eLife Sciences Publications Ltd
誌名: eLife
巻: 4
論文番号: e08150
抄録: Cell-to-cell viral infection, in which viruses spread through contact of infected cell with surrounding uninfected cells, has been considered as a critical mode of virus infection. However, since it is technically difficult to experimentally discriminate the two modes of viral infection, namely cell-free infection and cell-to-cell infection, the quantitative information that underlies cell-to-cell infection has yet to be elucidated, and its impact on virus spread remains unclear. To address this fundamental question in virology, we quantitatively analyzed the dynamics of cell-to-cell and cell-free human immunodeficiency virus type 1 (HIV-1) infections through experimental-mathematical investigation. Our analyses demonstrated that the cell-to-cell infection mode accounts for approximately 60% of viral infection, and this infection mode shortens the generation time of viruses by 0.9 times and increases the viral fitness by 3.9 times. Our results suggest that even a complete block of the cell-free infection would provide only a limited impact on HIV-1 spread.
著作権等: © Iwami et al. This article is distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use and redistribution provided that the original author and source are credited.
URI: http://hdl.handle.net/2433/218639
DOI(出版社版): 10.7554/eLife.08150
PubMed ID: 26441404
出現コレクション:学術雑誌掲載論文等

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