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Eradication of hepatitis C virus subgenomic replicon by interferon results in aberrant retinol-related protein

Kazuko Koike1, Akinobu Takaki, Nobuyuki Kato

  • 1Department of Gastroenterology and Hepatology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama 700-8558, Japan.

Acta Medica Okayama
|December 21, 2012
PubMed

Insights

Hepatitis C virus (HCV) replication alters host cell protein expression, specifically affecting retinol metabolism. Eradicating the HCV replicon impacts retinol-binding protein (RBP) and retinal dehydrogenase 1 (RALDH-1) levels in hepatocytes.

Area of Science:

  • Hepatology
  • Virology
  • Proteomics

Background:

  • Hepatitis C virus (HCV) infection causes liver cell changes like oxidative stress and cancer.
  • The precise mechanisms behind HCV's effects on liver cells are not fully understood.
  • Understanding host-cell protein alterations during HCV replication is crucial.

Purpose of the Study:

  • To investigate the impact of HCV replication on host-cell protein expression using proteomic techniques.
  • To identify specific proteins differentially expressed in HCV replicon-harboring cells compared to cured cells.

Main Methods:

  • Utilized two-dimensional electrophoresis (2-DE) and mass spectrometry for protein identification.
  • Compared protein expression profiles between cells with and without HCV subgenomic replicons.
  • Validated protein expression changes using enzyme-linked immunosorbent assay (ELISA) and Western blot analysis.

Main Results:

  • HCV replicon-harboring cells exhibited increased expression of retinal dehydrogenase 1 (RALDH-1).
  • Cured cells demonstrated higher expression of retinol-binding protein (RBP), which transports retinol.
  • Alterations in RBP expression were confirmed via ELISA and Western blot.

Conclusions:

  • Proteomic profiling reveals significant changes in retinol-related protein expression upon HCV replicon eradication.
  • HCV replication influences the host cell's retinol metabolism pathways.
  • These findings contribute to understanding HCV's molecular mechanisms in hepatocytes.

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