Matrix protein 2 of influenza A virus blocks autophagosome fusion with lysosomes.

Matrix protein 2 of influenza A virus blocks autophagosome fusion with lysosomes.
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DOI:
10.1016/j.chom.2009.09.005
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发表时间:
2009-10-22
影响因子:
30.3
通讯作者:
Münz C
Münz C
中科院分区:
医学1区
文献类型:
--
作者:
Gannagé M;Dormann D;Albrecht R;Dengjel J;Torossi T;Rämer PC;Lee M;Strowig T;Arrey F;Conenello G;Pypaert M;Andersen J;García-Sastre A;Münz C

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Influenza A virus is an important human pathogen causing significant morbidity and mortality every year and threatening the human population with epidemics and pandemics. Therefore, it is important to understand the biology of this virus to develop strategies to control its pathogenicity. Here we demonstrate that live influenza A virus infection causes accumulation of autophagosomes by blocking their fusion with lysosomes. Matrix protein 2 is sufficient and necessary for this inhibition of autophagosome degradation. Macroautophagy inhibition compromises cell survival of influenza virus infected cells, but does not influence viral replication. We propose that influenza A virus, which also encodes pro-apoptotic proteins, is able to determine the death of its host cell by inducing apoptosis and blocking macroautophagy.
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