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Abnormal global alternative RNA splicing in COVID-19 patients #MMPMID35421082
Wang C; Chen L; Chen Y; Jia W; Cai X; Liu Y; Ji F; Xiong P; Liang A; Liu R; Guan Y; Cheng Z; Weng Y; Wang W; Duan Y; Kuang D; Xu S; Cai H; Xia Q; Yang D; Wang MW; Yang X; Zhang J; Cheng C; Liu L; Liu Z; Liang R; Wang G; Li Z; Xia H; Xia T
PLoS Genet 2022[Apr]; 18 (4): e1010137 PMID35421082show ga
Viral infections can alter host transcriptomes by manipulating host splicing machinery. Despite intensive transcriptomic studies on SARS-CoV-2, a systematic analysis of alternative splicing (AS) in severe COVID-19 patients remains largely elusive. Here we integrated proteomic and transcriptomic sequencing data to study AS changes in COVID-19 patients. We discovered that RNA splicing is among the major down-regulated proteomic signatures in COVID-19 patients. The transcriptome analysis showed that SARS-CoV-2 infection induces widespread dysregulation of transcript usage and expression, affecting blood coagulation, neutrophil activation, and cytokine production. Notably, CD74 and LRRFIP1 had increased skipping of an exon in COVID-19 patients that disrupts a functional domain, which correlated with reduced antiviral immunity. Furthermore, the dysregulation of transcripts was strongly correlated with clinical severity of COVID-19, and splice-variants may contribute to unexpected therapeutic activity. In summary, our data highlight that a better understanding of the AS landscape may aid in COVID-19 diagnosis and therapy.