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Deprecated: Implicit conversion from float 263.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Mol+Ther 2021 ; 29 (8): 2424-2440 Nephropedia Template TP
Teng Y; Xu F; Zhang X; Mu J; Sayed M; Hu X; Lei C; Sriwastva M; Kumar A; Sundaram K; Zhang L; Park JW; Chen SY; Zhang S; Yan J; Merchant ML; Zhang X; McClain CJ; Wolfe JK; Adcock RS; Chung D; Palmer KE; Zhang HG
Mol Ther 2021[Aug]; 29 (8): 2424-2440 PMID33984520show ga
Lung inflammation is a hallmark of coronavirus disease 2019 (COVID-19). In this study, we show that mice develop inflamed lung tissue after being administered exosomes released from the lung epithelial cells exposed to severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) Nsp12 and Nsp13 (exosomes(Nsp12Nsp13)). Mechanistically, we show that exosomes(Nsp12Nsp13) are taken up by lung macrophages, leading to activation of nuclear factor kappaB (NF-kappaB) and the subsequent induction of an array of inflammatory cytokines. Induction of tumor necrosis factor (TNF)-alpha, interleukin (IL)-6, and IL-1beta from exosomes(Nsp12Nsp13)-activated lung macrophages contributes to inducing apoptosis in lung epithelial cells. Induction of exosomes(Nsp12Nsp13)-mediated lung inflammation was abolished with ginger exosome-like nanoparticle (GELN) microRNA (miRNA aly-miR396a-5p. The role of GELNs in inhibition of the SARS-CoV-2-induced cytopathic effect (CPE) was further demonstrated via GELN aly-miR396a-5p- and rlcv-miR-rL1-28-3p-mediated inhibition of expression of Nsp12 and spike genes, respectively. Taken together, our results reveal exosomes(Nsp12Nsp13) as potentially important contributors to the development of lung inflammation, and GELNs are a potential therapeutic agent to treat COVID-19.