Transcriptomic Signature Differences Between SARS-CoV-2 and Influenza Virus Infected Patients - Bibert, S.; Guex, N.; Lourenco, J.; Brahier, T.; Papadimitriou-Olivgeris, M.; Damonti, L.; Manuel, O.; Liechti, R.; Gotz, L.; Tschopp, J.; Quinodoz, M.; Vollenweider, P.; et al. (Front Immunol, 2021)
The reason why most individuals with COVID-19 have relatively limited symptoms while other develop respiratory distress with life-threatening complications remains unknown. Increasing evidence suggests that COVID-19 associated adverse outcomes mainly rely on dysregulated immunity. Here, we compared transcriptomic profiles of blood cells from 103 patients with different severity levels of COVID-19 with that of 27 healthy and 22 influenza-infected individuals. Data provided a complete overview of SARS-CoV-2-induced immune signature, including a dramatic defect in IFN responses, a reduction of toxicity-related molecules in NK cells, an increased degranulation of neutrophils, a dysregulation of T cells, a dramatic increase in B cell function and immunoglobulin production, as well as an important over-expression of genes involved in metabolism and cell cycle in patients infected with SARS-CoV-2 compared to those infected with influenza viruses. These features also differed according to COVID-19 severity. Overall and specific gene expression patterns across groups can be visualized on an interactive website (https://bix.unil.ch/covid/). Collectively, these transcriptomic host responses to SARS-CoV-2 infection are discussed in the context of current studies, thereby improving our understanding of COVID-19 pathogenesis and shaping the severity level of COVID-19.
Keywords: journalArticle; COVID-19/*immunology; Covid-19; Humans; Influenza, Human/*immunology; RNA-sequencing; SARS-CoV-2; SARS-CoV-2/immunology; Transcriptome; commercial or financial relationships that could be construed as a potential; conflict of interest; immune profiling; influenza; whole blood transcriptome