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Deprecated: Implicit conversion from float 261.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Sci+Immunol 2020 ; 5 (49): ä Nephropedia Template TP
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Immunophenotyping of COVID-19 and influenza highlights the role of type I interferons in development of severe COVID-19 #MMPMID32651212
Lee JS; Park S; Jeong HW; Ahn JY; Choi SJ; Lee H; Choi B; Nam SK; Sa M; Kwon JS; Jeong SJ; Lee HK; Park SH; Park SH; Choi JY; Kim SH; Jung I; Shin EC
Sci Immunol 2020[Jul]; 5 (49): ä PMID32651212show ga
Although most SARS-CoV-2-infected individuals experience mild coronavirus disease 2019 (COVID-19), some patients suffer from severe COVID-19, which is accompanied by acute respiratory distress syndrome and systemic inflammation. To identify factors driving severe progression of COVID-19, we performed single-cell RNA-seq using peripheral blood mononuclear cells (PBMCs) obtained from healthy donors, patients with mild or severe COVID-19, and patients with severe influenza. Patients with COVID-19 exhibited hyper-inflammatory signatures across all types of cells among PBMCs, particularly up-regulation of the TNF/IL-1beta-driven inflammatory response as compared to severe influenza. In classical monocytes from patients with severe COVID-19, type I IFN response co-existed with the TNF/IL-1beta-driven inflammation, and this was not seen in patients with milder COVID-19. Interestingly, we documented type I IFN-driven inflammatory features in patients with severe influenza as well. Based on this, we propose that the type I IFN response plays a pivotal role in exacerbating inflammation in severe COVID-19.