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Chloride Intracellular Channel Protein 1 (CLIC1) Is a Critical Host Cellular Factor for Influenza A Virus Replication
Mahamud-Ur Rashid1,2, Kevin M Coombs1,2,3
1Department of Medical Microbiology and Infectious Diseases, University of Manitoba, Room 543 Basic Medical Sciences Building, 745 Bannatyne Avenue, Winnipeg, MB R3E OJ9, Canada.
Viruses
|January 23, 2024
Summary
Chloride intracellular channel protein 1 (CLIC1) is crucial for Influenza A Virus (IAV) replication. Inhibiting CLIC1 significantly reduces IAV replication, suggesting it as a target for antiviral drugs.
Area of Science:
- Virology
- Cell Biology
- Molecular Biology
Background:
- Influenza A Virus (IAV) relies on host cell proteins for replication.
- IAV infection elevates chloride intracellular channel protein 1 (CLIC1) in lung cells, but its role is unclear.
Purpose of the Study:
- To determine the role of CLIC1 in IAV replication.
- Investigate the impact of CLIC1 knockdown on viral protein translation, RNA transcription, and host proteome.
Main Methods:
- Utilized CLIC1 knockdown (KD) in A549 human lung epithelial cells.
- Measured progeny IAV, viral protein expression, and viral RNA accumulation.
- Employed SomaScan® proteomic analysis to assess host cellular proteome dysregulation.
Main Results:
- CLIC1 KD significantly decreased progeny IAV but did not affect viral protein expression.
- Viral RNA accumulation increased significantly in CLIC1 KD cells.
- CLIC1 inhibition reduced IAV replication; proteomic analysis revealed altered host transcription-associated proteins.
Conclusions:
- CLIC1 plays a role in the later stages of IAV replication.
- CLIC1 is a potential host factor for developing anti-IAV drugs.
