Single-cell meta-analysis of SARS-CoV-2 entry genes across tissues and demographics.
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Abstract | Angiotensin-converting enzyme 2 (ACE2) and accessory proteases (TMPRSS2 and CTSL) are needed for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) cellular entry, and their expression may shed light on viral tropism and impact across the body. We assessed the cell-type-specific expression of ACE2, TMPRSS2 and CTSL across 107 single-cell RNA-sequencing studies from different tissues. ACE2, TMPRSS2 and CTSL are coexpressed in specific subsets of respiratory epithelial cells in the nasal passages, airways and alveoli, and in cells from other organs associated with coronavirus disease 2019 (COVID-19) transmission or pathology. We performed a meta-analysis of 31 lung single-cell RNA-sequencing studies with 1,320,896 cells from 377 nasal, airway and lung parenchyma samples from 228 individuals. This revealed cell-type-specific associations of age, sex and smoking with expression levels of ACE2, TMPRSS2 and CTSL. Expression of entry factors increased with age and in males, including in airway secretory cells and alveolar type 2 cells. Expression programs shared by ACE2TMPRSS2 cells in nasal, lung and gut tissues included genes that may mediate viral entry, key immune functions and epithelial-macrophage cross-talk, such as genes involved in the interleukin-6, interleukin-1, tumor necrosis factor and complement pathways. Cell-type-specific expression patterns may contribute to the pathogenesis of COVID-19, and our work highlights putative molecular pathways for therapeutic intervention. |
Year of Publication | 2021
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Journal | Nat Med
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Volume | 27
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Issue | 3
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Pages | 546-559
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Date Published | 2021 03
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ISSN | 1546-170X
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DOI | 10.1038/s41591-020-01227-z
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PubMed ID | 33654293
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Grant list | RC2 DK114784 / DK / NIDDK NIH HHS / United States
W81XWH1410234 / Department of Defense
R01 HL133153 / HL / NHLBI NIH HHS / United States
R01 HL141380 / HL / NHLBI NIH HHS / United States
U01 HL122700 / HL / NHLBI NIH HHS / United States
K01 HL140187 / HL / NHLBI NIH HHS / United States
R01 HL145372 / HL / NHLBI NIH HHS / United States
R01 HL146557 / HL / NHLBI NIH HHS / United States
K08 HL146943 / HL / NHLBI NIH HHS / United States
U01 HL148867 / HL / NHLBI NIH HHS / United States
U01 HL148856 / HL / NHLBI NIH HHS / United States
K08 HL130595 / HL / NHLBI NIH HHS / United States
P30 DK043351 / DK / NIDDK NIH HHS / United States
U01 HL145550 / HL / NHLBI NIH HHS / United States
R01 DK117263 / DK / NIDDK NIH HHS / United States
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