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 17 junho 2024
![SARS-CoV-2 ORF3A interacts with the Clic-like chloride channel-1 (CLCC1) and triggers an unfolded protein response [PeerJ]](https://dfzljdn9uc3pi.cloudfront.net/2023/15077/1/fig-1-full.png)
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.
![SARS-CoV-2 ORF3A interacts with the Clic-like chloride channel-1 (CLCC1) and triggers an unfolded protein response [PeerJ]](https://dfzljdn9uc3pi.cloudfront.net/2023/15077/1/Uncroppedwesternblots.png)
SARS-CoV-2 ORF3A interacts with the Clic-like chloride channel-1 (CLCC1) and triggers an unfolded protein response [PeerJ]
![SARS-CoV-2 ORF3A interacts with the Clic-like chloride channel-1 (CLCC1) and triggers an unfolded protein response [PeerJ]](https://mcmanuslab.ucsf.edu/sites/mcmanuslab.ucsf.edu/files/lab-logo-black_0.png)
Publications
![SARS-CoV-2 ORF3A interacts with the Clic-like chloride channel-1 (CLCC1) and triggers an unfolded protein response [PeerJ]](https://media.cellsignal.com/product/image/45596_fig01_IHC-P_280_20210430193153.png)
PDI (E7O2R) Mouse mAb Cell Signaling Technology
![SARS-CoV-2 ORF3A interacts with the Clic-like chloride channel-1 (CLCC1) and triggers an unfolded protein response [PeerJ]](https://www.frontiersin.org/files/Articles/708264/fimmu-12-708264-HTML/image_m/fimmu-12-708264-g002.jpg)
Frontiers SARS-CoV-2 Accessory Proteins in Viral Pathogenesis: Knowns and Unknowns
![SARS-CoV-2 ORF3A interacts with the Clic-like chloride channel-1 (CLCC1) and triggers an unfolded protein response [PeerJ]](https://media.cellsignal.com/product/image/45596_fig05_IHC-P_280_20210430193152.png)
PDI (E7O2R) Mouse mAb Cell Signaling Technology
![SARS-CoV-2 ORF3A interacts with the Clic-like chloride channel-1 (CLCC1) and triggers an unfolded protein response [PeerJ]](https://www.mdpi.com/pathogens/pathogens-12-01373/article_deploy/html/images/pathogens-12-01373-g003.png)
Pathogens, Free Full-Text
![SARS-CoV-2 ORF3A interacts with the Clic-like chloride channel-1 (CLCC1) and triggers an unfolded protein response [PeerJ]](https://europepmc.org/articles/PMC8387424/bin/41598_2021_96462_Fig6_HTML.jpg)
Comparative transcriptomic analysis of SARS-CoV-2 infected cell model systems reveals differential innate immune responses. - Abstract - Europe PMC
![SARS-CoV-2 ORF3A interacts with the Clic-like chloride channel-1 (CLCC1) and triggers an unfolded protein response [PeerJ]](https://bms.ucsf.edu/sites/g/files/tkssra3471/f/Ku%2C%20Gregory%20-%20pic%203.jpg)
Gregory Ku, MD, PhD Biomedical Sciences Graduate Program
![SARS-CoV-2 ORF3A interacts with the Clic-like chloride channel-1 (CLCC1) and triggers an unfolded protein response [PeerJ]](https://ars.els-cdn.com/content/image/1-s2.0-S0024320520305920-ga1.jpg)
Crosstalk between endoplasmic reticulum stress and anti-viral activities: A novel therapeutic target for COVID-19 - ScienceDirect
Hannah Gruner - Postdoctoral Fellow - Swarthmore College
![SARS-CoV-2 ORF3A interacts with the Clic-like chloride channel-1 (CLCC1) and triggers an unfolded protein response [PeerJ]](https://ars.els-cdn.com/content/image/1-s2.0-S2213231722001604-ga1.jpg)
SARS-CoV-2 ORF8 reshapes the ER through forming mixed disulfides with ER oxidoreductases - ScienceDirect
![SARS-CoV-2 ORF3A interacts with the Clic-like chloride channel-1 (CLCC1) and triggers an unfolded protein response [PeerJ]](https://iiif.elifesciences.org/lax:84477%2Felife-84477-fig2-figsupp2-v3.tif/full/1500,/0/default.jpg)
The SARS-CoV-2 accessory protein Orf3a is not an ion channel, but does interact with trafficking proteins
![SARS-CoV-2 ORF3A interacts with the Clic-like chloride channel-1 (CLCC1) and triggers an unfolded protein response [PeerJ]](https://www.frontiersin.org/files/Articles/693227/fgene-12-693227-HTML/image_m/fgene-12-693227-g001.jpg)
Frontiers Structural Analysis of SARS-CoV-2 ORF8 Protein: Pathogenic and Therapeutic Implications
![SARS-CoV-2 ORF3A interacts with the Clic-like chloride channel-1 (CLCC1) and triggers an unfolded protein response [PeerJ]](https://images.novusbio.com/images2/CLCC1-Antibody-Knockdown-Validated-NBP1-82793-img0021.jpg)
CLCC1 Antibody (NBP1-82793): Novus Biologicals
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