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Expression of microRNA-155 precursor in peripheral blood mononuclear cells from Hepatitis C patients after antiviral

M Sidorkiewicz1, M Grek, B Jozwiak

  • 1Department of Medical Biochemistry, Medical University of Lodz, ul. Mazowiecka 6/8, Lodz, Poland. msidor@zdn.am.lodz.pl

Acta Virologica
|March 6, 2010
PubMed

Insights

Hepatitis C virus (HCV) RNA persistence after treatment correlates with BIC expression in peripheral blood mononuclear cells (PBMCs). High BIC levels indicate ongoing infection, while clearance is linked to lower BIC expression.

Area of Science:

  • Hepatology
  • Virology
  • Molecular Biology

Background:

  • Chronic Hepatitis C virus (HCV) infection is a leading cause of liver cirrhosis, hepatocellular carcinoma, and extra-hepatic diseases.
  • HCV RNA persistence in serum and peripheral blood mononuclear cells (PBMCs) is frequently observed post-treatment.
  • BIC, the precursor of microRNA-155 (miR-155), is implicated as a potential factor influencing HCV infection course.

Purpose of the Study:

  • To investigate the relationship between BIC expression and HCV RNA status in treated patients.
  • To determine if BIC expression levels correlate with viral clearance in serum and PBMCs.

Main Methods:

  • Assessed BIC expression in PBMCs and HCV RNA in serum and PBMCs from 64 patients treated with interferon alpha (IFN-alpha) + ribavirin.
  • Categorized patients based on HCV RNA status: persistent in both, cleared from serum only, or cleared from both.

Main Results:

  • 100% of patients with detectable HCV RNA in both serum and PBMCs showed high BIC expression.
  • 83% of patients who cleared HCV RNA from serum but not PBMCs were BIC-positive.
  • The lowest BIC expression was observed in patients who cleared HCV RNA from both serum and PBMCs.

Conclusions:

  • BIC expression in PBMCs is strongly associated with HCV RNA status.
  • High BIC expression may serve as a biomarker for persistent HCV infection even after treatment.
  • Monitoring BIC levels could offer insights into HCV clearance dynamics.

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