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Inhibition of HCV 3a core gene through Silymarin and its fractions

Usman Ali Ashfaq1, Tariq Javed, Sidra Rehman

  • 1Division of Molecular Medicine, National Centre of Excellence in Molecular Biology, University of the Punjab, Lahore, Pakistan. usmancemb@gmail.com

Virology Journal
|April 2, 2011
PubMed
Abstract

Insights

Milk thistle extract (Silymarin) and its purified fractions show promise in inhibiting Hepatitis C virus (HCV) replication. This natural compound offers a potential new avenue for treating HCV infection, especially when combined with interferon.

Area of Science:

  • Hepatology
  • Virology
  • Natural Product Chemistry

Background:

  • Hepatitis C (HCV) poses a significant global health challenge, affecting millions worldwide.
  • Current interferon-based treatments for HCV have limitations, including moderate efficacy and significant side effects.

Purpose of the Study:

  • To investigate the antiviral activity of Silybum marianum (Milk thistle) extract against the Hepatitis C virus (HCV).
  • To identify active components within the extract responsible for inhibiting HCV replication.

Main Methods:

  • Extraction and fractionation of Silybum marianum seeds.
  • In vitro analysis of extract and fractions against HCV 3a core gene in liver cells.
  • Dose-dependent inhibition assays and western blotting were employed.

Main Results:

  • Silymarin (SM) demonstrated dose-dependent inhibition of HCV core gene expression and function at non-toxic concentrations.
  • Two purified fractions (S1 and S2) from SM were identified as active inhibitors of HCV 3a core.
  • GAPDH expression remained constant, indicating specific inhibition of the viral target.

Conclusions:

  • Silymarin and its fractions (S1, S2) effectively inhibit the HCV 3a genotype core gene.
  • Combining Silymarin or its fractions with interferon may offer a more effective treatment strategy for HCV infection.

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