4.8 Article

Photochemical Identification of Auxiliary Severe Acute Respiratory Syndrome Coronavirus 2 Host Entry Factors Using μMap

期刊

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 144, 期 36, 页码 16604-16611

出版社

AMER CHEMICAL SOC
DOI: 10.1021/jacs.2c06806

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资金

  1. National Institutes of Health
  2. Burroughs Wellcome Fund Award for Investigators in Pathogenesis [R01AI138797, R01AI107301, R01AI146917, R01AI153236]
  3. Office of the Dean for Research and a component of the National Institutes of Health(N [101539]
  4. NIH National Institute of General Medical Sciences [UL1TR003017]
  5. NIH [R35-GM134897-02]
  6. Cancer Institute of New Jersey Cancer Center [1F32GM142206-01]
  7. [P30CA072720]

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This study used mu Map to analyze the spike interactome of SARS-CoV-2 and identified eight novel candidate receptors. Experimental validation showed that co-expression of ACE2 with other receptors significantly enhances viral uptake.
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), the infectious agent of the COVID-19 pandemic, remains a global medical problem. Angiotensin-converting enzyme 2 (ACE2) was identified as the primary viral entry receptor, and transmembrane serine protease 2 primes the spike protein for membrane fusion. However, ACE2 expression is generally low and variable across tissues, suggesting that auxiliary receptors facilitate viral entry. Identifying these factors is critical for understanding SARS-Cov-2 pathophysiology and developing new countermeasures. However, profiling host-virus interactomes involves extensive genetic screening or complex computational predictions. Here, we leverage the photocatalytic proximity labeling platform mu Map to rapidly profile the spike interactome in human cells and identify eight novel candidate receptors. We systemically validate their functionality in SARS-CoV-2 pseudoviral uptake assays with both Wuhan and Delta spike variants and show that dual expression of ACE2 with either neuropilin-2, ephrin receptor A7, solute carrier family 6 member 15, or myelin and lymphocyte protein 2 significantly enhances viral uptake. Collectively, our data show that SARS-CoV-2 synergistically engages several host factors for cell entry and establishes mu Map as a powerful tool for rapidly interrogating host-virus interactomes.

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