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Cross talk between alcohol-induced oxidative stress and HCV replication

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Abstract

Alcohol consumption exacerbates the pathogenesis of hepatitis C virus (HCV) infection and aggravates disease consequences in alcohol‐abusing patients. Although the exact reasons by which alcohol consumption affects several cellular pathways in liver cells are not clear, they might be partially attributed to the ability of alcohol to further suppress the innate immunity, modulation of autophagy and also its relationship with reactive oxygen species (ROS) generation. To evaluate these issues, Huh7 cells harboring HCV replicon and Cytochrome p450 (CYP2E1) plasmid were exposed to ethanol and mRNA expression of Beclin-1, interferon-stimulated gene15 (ISG15) genes and HCV NS5B for two different times were relatively quantitated. ROS was determined by flow cytometry. The results showed that alcohol treatment in a short time caused an increase in HCV NS5B and Beclin-1 mRNA and decreased ISG 15 mRNA. Long-lasting alcohol treatment increased ROS production in Huh-7 cells and HCV replication was reduced. In conclusion, acute alcohol treatment might contribute to increase HCV replication by interference in innate immunity and induction of autophagy. Chronic alcohol treatment caused oxidative stress, which disrupts autophagy and thereby increased the rate of Huh7 cell injury.

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Acknowledgements

We gratefully acknowledge Prof. Charles M. Rice for generously providing sub-genomic HCV replicon. We thank Dr. R. Shokohi at the Asthma and Allergy Institute of Imam Khomeini Hospital for statistical analysis.

Funding

This study was funded by the Tarbiat Modares University (Grant Number Med—54395) for Ph.D. thesis.

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FS: project development, data collection, manuscript writing, data analysis. TB: supervising, manuscript editing. FR: advisor.

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Correspondence to Taravat Bamdad.

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The authors declare that they have no conflict of interest.

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Communicated by Erko Stackebrandt.

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Sobhanimonfared, F., Bamdad, T. & Roohvand, F. Cross talk between alcohol-induced oxidative stress and HCV replication. Arch Microbiol 202, 1889–1898 (2020). https://doi.org/10.1007/s00203-020-01909-9

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  • DOI: https://doi.org/10.1007/s00203-020-01909-9

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