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Hepatitis C virus infection modulates expression of interferon stimulatory gene IFITM1 by upregulating miR-130A
Joydip Bhanja Chowdhury1, Shubham Shrivastava, Robert Steele
1Department of Pathology, Saint Louis University, Saint Louis, Missouri, USA.
Abstract:
We have examined the underlying mechanism of hepatitis C virus (HCV)-mediated IFITM1 regulation. IFITM1 is a potential target of miR-130a. Our results demonstrated that miR-130a expression was significantly higher in HCV-infected hepatocytes and liver biopsy specimens than in controls. Introduction of anti-miR-130a in hepatocytes increased IFITM1 expression. Hepatocytes stably expressing IFITM1 reduced HCV replication. Together, these results suggested that HCV infection of hepatocytes upregulates miR-130a and that use of anti-miR-130a may have potential for restriction of HCV replication.
Insights
Hepatitis C virus (HCV) infection upregulates miR-130a, which suppresses IFITM1 expression. Blocking miR-130a with anti-miR-130a increased IFITM1, potentially restricting HCV replication.
Area of Science:
- Virology
- Molecular Biology
- Hepatology
Background:
- Hepatitis C virus (HCV) infection poses a significant global health challenge.
- Understanding the molecular mechanisms of HCV pathogenesis is crucial for developing effective therapies.
Purpose of the Study:
- To elucidate the role of IFITM1 (Interferon-induced transmembrane protein 1) in HCV infection.
- To investigate the regulatory relationship between miR-130a and IFITM1 during HCV infection.
Main Methods:
- Analysis of miR-130a and IFITM1 expression in HCV-infected hepatocytes and liver tissues.
- In vitro studies using anti-miR-130a to modulate miR-130a levels.
- Assessment of HCV replication in hepatocytes with altered IFITM1 expression.
Main Results:
- miR-130a expression was significantly elevated in HCV-infected samples compared to controls.
- Upregulation of IFITM1 expression was observed upon introduction of anti-miR-130a.
- Hepatocytes expressing IFITM1 exhibited reduced HCV replication.
Conclusions:
- HCV infection leads to the upregulation of miR-130a in hepatocytes.
- miR-130a negatively regulates IFITM1 expression.
- Targeting miR-130a with anti-miR-130a presents a potential therapeutic strategy for restricting HCV replication.
