Author: Zhu, Shiyou; Liu, Ying; Zhou, Zhuo; Zhang, Zhiying; Xiao, Xia; Liu, Zhiheng; Chen, Ang; Dong, Xiaojing; Tian, Feng; Chen, Shihua; Xu, Yiyuan; Wang, Chunhui; Li, Qiheng; Niu, Xuran; Pan, Qian; Du, Shuo; Xiao, Junyu; Wang, Jianwei; Wei, Wensheng
Title: Genome-wide CRISPR activation screen identifies candidate receptors for SARS-CoV-2 entry Cord-id: 81g2715e Document date: 2021_8_20
ID: 81g2715e
Snippet: The outbreak of coronavirus disease 2019 (COVID-19) caused by SARS-CoV-2 has created a global health crisis. SARS-CoV-2 infects varieties of tissues where the known receptor ACE2 is low or almost absent, suggesting the existence of alternative viral entry pathways. Here, we performed a genome-wide barcoded-CRISPRa screen to identify novel host factors that enable SARS-CoV-2 infection. Beyond known host proteins, i.e., ACE2, TMPRSS2, and NRP1, we identified multiple host components, among which L
Document: The outbreak of coronavirus disease 2019 (COVID-19) caused by SARS-CoV-2 has created a global health crisis. SARS-CoV-2 infects varieties of tissues where the known receptor ACE2 is low or almost absent, suggesting the existence of alternative viral entry pathways. Here, we performed a genome-wide barcoded-CRISPRa screen to identify novel host factors that enable SARS-CoV-2 infection. Beyond known host proteins, i.e., ACE2, TMPRSS2, and NRP1, we identified multiple host components, among which LDLRAD3, TMEM30A, and CLEC4G were confirmed as functional receptors for SARS-CoV-2. All these membrane proteins bind directly to spike’s N-terminal domain (NTD). Their essential and physiological roles have been confirmed in either neuron or liver cells. In particular, LDLRAD3 and CLEC4G mediate SARS-CoV-2 entry and infection in an ACE2-independent fashion. The identification of the novel receptors and entry mechanisms could advance our understanding of the multiorgan tropism of SARS-CoV-2, and may shed light on the development of COVID-19 countermeasures. SUPPORTING INFORMATION: The supporting information is available online at 10.1007/s11427-021-1990-5. The supporting materials are published as submitted, without typesetting or editing. The responsibility for scientific accuracy and content remains entirely with the authors.
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