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SARS-CoV-2 proteins

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    Fibrinolysis influences SARS-CoV-2 infection MESHD in ciliated cells

    Authors: Myoung Ryoul Park; Chunmei Cai; Min-Jung Seo; Hong-Tae Yun; Soo-Kwon Park; Man-Soo Choi; Chang-Hwan Park; Jung Kyung Moon

    doi:10.1101/2021.01.07.425801 Date: 2021-01-08 Source: bioRxiv

    Rapid spread of COVID-19 MESHD has caused an unprecedented pandemic worldwide, and an inserted furin HGNC site in SARS-CoV-2 spike PROTEIN protein (S PROTEIN) may account for increased transmissibility. Plasmin HGNC, and other host proteases, may cleave the furin HGNC site of SARS-CoV-2 S protein PROTEIN and {gamma} subunits of epithelial sodium channels ({gamma} ENaC), resulting in an increment in virus infectivity and channel activity. As for the importance of ENaC in the regulation of airway surface and alveolar fluid homeostasis MESHD, whether SARS-CoV-2 will share and strengthen the cleavage network with ENaC proteins at the single-cell level is urgently worthy of consideration. To address this issue, we analyzed single-cell RNA sequence (scRNA-seq) datasets, and found the PLAU HGNC (encoding urokinase plasminogen activator), SCNN1G HGNC ({gamma}ENaC), and ACE2 HGNC (SARS-CoV-2 receptor) were co-expressed in alveolar epithelial MESHD, basal, club, and ciliated epithelial cells. The relative expression level of PLAU HGNC, TMPRSS2 HGNC, and ACE2 HGNC were significantly upregulated in severe COVID-19 MESHD patients and SARS-CoV-2 infected MESHD cell lines using Seurat and DESeq2 R packages. Moreover, the increments in PLAU HGNC, FURIN HGNC, TMPRSS2 HGNC, and ACE2 HGNC were predominately observed in different epithelial cells and leukocytes. Accordingly, SARS-CoV-2 may share and strengthen the ENaC fibrinolytic proteases network in ACE2 HGNC positive airway and alveolar MESHD epithelial cells, which may expedite virus infusion into the susceptible cells and bring about ENaC associated edematous respiratory condition MESHD.

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MeSH Disease
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