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1.
Sci China Life Sci ; 65(4): 701-717, 2022 04.
Article in English | MEDLINE | ID: covidwho-1371380

ABSTRACT

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.


Subject(s)
COVID-19 , SARS-CoV-2 , Angiotensin-Converting Enzyme 2/genetics , Clustered Regularly Interspaced Short Palindromic Repeats , Humans , SARS-CoV-2/genetics , Virus Internalization
2.
SSRN; 2020.
Preprint | SSRN | ID: ppcovidwho-597

ABSTRACT

Background: Even since the end of 2019, a small virus termed as SARS-CoV-2 has been making big impact on global people’s health. Despite the clinical features o

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