SARS-CoV-2 ORF3A interacts with the Clic-like chloride channel-1 (CLCC1) and triggers an unfolded protein response [PeerJ]
Por um escritor misterioso
Last updated 22 setembro 2024
Understanding the interactions between SARS-CoV-2 and host cell machinery may reveal new targets to treat COVID-19. We focused on an interaction between the SARS-CoV-2 ORF3A accessory protein and the CLIC-like chloride channel-1 (CLCC1). We found that ORF3A partially co-localized with CLCC1 and that ORF3A and CLCC1 could be co-immunoprecipitated. Since CLCC1 plays a role in the unfolded protein response (UPR), we hypothesized that ORF3A may also play a role in the UPR. Indeed, ORF3A expression triggered a transcriptional UPR that was similar to knockdown of CLCC1. ORF3A expression in 293T cells induced cell death and this was rescued by the chemical chaperone taurodeoxycholic acid (TUDCA). Cells with CLCC1 knockdown were partially protected from ORF3A-mediated cell death. CLCC1 knockdown upregulated several of the homeostatic UPR targets induced by ORF3A expression, including HSPA6 and spliced XBP1, and these were not further upregulated by ORF3A. Our data suggest a model where CLCC1 silencing triggers a homeostatic UPR that prevents cell death due to ORF3A expression.
CLCC1 Antibody (NBP1-82793): Novus Biologicals
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Frontiers The Role of Unfolded Protein Response in Coronavirus Infection and Its Implications for Drug Design
SARS-CoV-2 genomic surveillance identifies naturally occurring truncation of ORF7a that limits immune suppression - ScienceDirect
SARS-CoV-2 ORF3A interacts with the Clic-like chloride channel-1 (CLCC1) and triggers an unfolded protein response [PeerJ]
Publications
PDI (E7O2R) Mouse mAb Cell Signaling Technology
Rabbit Polyclonal Anti-CLCC1 Antibody. Tested Applications: Western Blot, ICC, IHC, IHC-Paraffin. Tested Reactivity: Human.
CLCC1 Antibody
Endoplasmic reticulum-associated SARS-CoV-2 ORF3a elicits heightened cytopathic effects despite robust ER-associated degradation
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Detecting SARS-CoV-2 Orf3a and E ion channel activity in COVID-19 blood samples, Journal of Clinical and Translational Science
Large scale discovery of coronavirus-host factor protein interaction motifs reveals SARS-CoV-2 specific mechanisms and vulnerabilities
Endoplasmic reticulum-associated SARS-CoV-2 ORF3a elicits heightened cytopathic effects despite robust ER-associated degradation
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