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[HCV DF protein inhibits expression of p16 and p21 in HepG₂ cells]

Hao-Peng Wang1, Yun Zhang, Jing-Jing Yang

  • 1Department of Public Health, Nanjing Medical University, Nanjing 210029, China.

Xi Bao Yu Fen Zi Mian Yi Xue Za Zhi = Chinese Journal of Cellular and Molecular Immunology
|September 7, 2010
PubMed
Abstract

Insights

Hepatitis C virus (HCV) Double-shift F (DF) protein suppresses p16 and p21 expression in liver cells. This finding suggests a role for HCV DF protein in hepatocellular carcinoma development.

Area of Science:

  • Molecular Biology
  • Virology
  • Oncology

Context:

  • Hepatocellular carcinoma (HCC) is a major global health concern.
  • Hepatitis C virus (HCV) infection is a primary risk factor for HCC.
  • Understanding viral protein functions in hepatocarcinogenesis is crucial.

Purpose:

  • To determine the impact of the HCV Double-shift F (DF) protein on p16 and p21 expression in HepG(2) cells.
  • To investigate the potential role of HCV DF protein in the molecular mechanisms of liver cancer.

Summary:

  • The DF gene was amplified from the HCV 1b genome and cloned into a pCDNA3.0 vector.
  • HepG(2) cells were transfected with the recombinant plasmid (pCDNA3.0/HCV-DF) or an empty vector.
  • Semi-quantitative RT-PCR and Western blot analysis revealed that HCV DF protein significantly reduced p16 and p21 mRNA and protein expression compared to controls.

Impact:

  • HCV DF protein inhibits the expression of tumor suppressor proteins p16 and p21.
  • This inhibition may contribute to the uncontrolled cell proliferation observed in hepatocellular carcinoma.
  • The study provides insights into the oncogenic potential of HCV DF protein and its role in HCC progression.

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