Host and viral determinants for efficient SARS-CoV-2 infection of the human lung.
Host and viral determinants for efficient SARS-CoV-2 infection of the human lung.
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DOI:
10.1038/s41467-020-20457-w
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发表时间:
2021-01-08
影响因子:
16.6
通讯作者:
Yuen KY
中科院分区:
文献类型:
--
作者:
Chu H;Hu B;Huang X;Chai Y;Zhou D;Wang Y;Shuai H;Yang D;Hou Y;Zhang X;Yuen TT;Cai JP;Zhang AJ;Zhou J;Yuan S;To KK;Chan IH;Sit KY;Foo DC;Wong IY;Ng AT;Cheung TT;Law SY;Au WK;Brindley MA;Chen Z;Kok KH;Chan JF;Yuen KY
Understanding the factors that contribute to efficient SARS-CoV-2 infection of human cells may provide insights on SARS-CoV-2 transmissibility and pathogenesis, and reveal targets of intervention. Here, we analyze host and viral determinants essential for efficient SARS-CoV-2 infection in both human lung epithelial cells and ex vivo human lung tissues. We identify heparan sulfate as an important attachment factor for SARS-CoV-2 infection. Next, we show that sialic acids present on ACE2 prevent efficient spike/ACE2-interaction. While SARS-CoV infection is substantially limited by the sialic acid-mediated restriction in both human lung epithelial cells and ex vivo human lung tissues, infection by SARS-CoV-2 is limited to a lesser extent. We further demonstrate that the furin-like cleavage site in SARS-CoV-2 spike is required for efficient virus replication in human lung but not intestinal tissues. These findings provide insights on the efficient SARS-CoV-2 infection of human lungs. Here, using lung epithelial cells and ex vivo tissue explants, the authors show that, in addition to ACE2, host heparan sulfate is directly involved in SARS-CoV-2 attachment and entry and provide data suggesting that host sialic acids may act as viral restriction factor in lung tissues.
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