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标题：SARS-CoV-2 infection enhances mitochondrial PTP complex activity to perturb cardiac energetics
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作者：Karthik Ramachandran ; Soumya Maity ; Alagar R. Muthukumar 等
期刊名称：iScience
印刷版ISSN：2589-0042
出版年度：2022
卷号：25
期号：1
页码：1-24
DOI：10.1016/j.isci.2021.103722
语种：English
出版社：Elsevier
摘要：SummarySARS-CoV-2 is a newly identified coronavirus that causes the respiratory disease called coronavirus disease 2019 (COVID-19). With an urgent need for therapeutics, we lack a full understanding of the molecular basis of SARS-CoV-2-induced cellular damage and disease progression. Here, we conducted transcriptomic analysis of human PBMCs, identified significant changes in mitochondrial, ion channel, and protein quality-control gene products. SARS-CoV-2 proteins selectively target cellular organelle compartments, including the endoplasmic reticulum and mitochondria. M-protein, NSP6, ORF3A, ORF9C, and ORF10 bind to mitochondrial PTP complex components cyclophilin D, SPG-7, ANT, ATP synthase, and a previously undescribed CCDC58 (coiled-coil domain containing protein 58). Knockdown of CCDC58 or mPTP blocker cyclosporin A pretreatment enhances mitochondrial Ca2+retention capacity and bioenergetics. SARS-CoV-2 infection exacerbates cardiomyocyte autophagy and promotes cell death that was suppressed by cyclosporin A treatment. Our findings reveal that SARS-CoV-2 viral proteins suppress cardiomyocyte mitochondrial function that disrupts cardiomyocyte Ca2+cycling and cell viability.Graphical abstractDisplay OmittedHighlights•SARS-CoV-2 perturbs human ion channel, quality control, and mitochondrial transcripts•SARS-CoV-2 proteins interact with permeability transition pore complex•SARS-CoV-2 alters VDCC activity that disrupts cardiomyocytes Ca2+cycling•Cyclosporin A preserves mitochondrial energetics from SARS-CoV-2 infectionCardiovascular medicine; Virology; Transcriptomics