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Zhang, Fei; Li, Wan; Feng, Jian; Ramos da Silva, Suzane; Ju, Enguo; Zhang, Hu; Chang, Yuan; Moore, Patrick S.; Guo, Haitao; Gao, Shou‐Jiang
Journal of medical virology, December 2021, Letnik: 93, Številka: 12Journal Article
Infection by severe acute respiratory syndrome coronavirus 2 (SARS‐CoV‐2) causes a wide spectrum of syndromes involving multiple organ systems and is primarily mediated by viral spike (S) glycoprotein through the receptor‐binding domain (RBD) and numerous cellular proteins including ACE2, transmembrane serine protease 2 (TMPRSS2), kidney injury molecule‐1 (Kim‐1), and neuropilin‐1 (NRP‐1). In this study, we examined the entry tropism of SARS‐CoV‐2 and SARS‐CoV using S protein‐based pseudoviruses to infect 22 cell lines and 3 types of primary cells isolated from respiratory, urinary, digestive, reproductive, and immune systems. At least one cell line or type of primary cell from each organ system was infected by both pseudoviruses. Infection by pseudoviruses is effectively blocked by S1, RBD, and ACE2 recombinant proteins, and more weakly by Kim‐1 and NRP‐1 recombinant proteins. Furthermore, cells with robust SARS‐CoV‐2 pseudovirus infection had strong expression of either ACE2 or Kim‐1 and NRP‐1 proteins. ACE2 glycosylation appeared to be critical for the infections of both viruses as there was a positive correlation between infectivity of either SARS‐CoV‐2 or SARS‐CoV pseudovirus with the level of glycosylated ACE2 (gly‐ACE2). These results reveal that SARS‐CoV‐2 cell entry could be mediated by either an ACE2‐dependent or ‐independent mechanism, thus providing a likely molecular basis for its broad tropism for a wide variety of cell types.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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in: SICRIS
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