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Updated: Jan 23, 2026

Single-Cell Multiplexed Fluorescence Imaging to Visualize Viral Nucleic Acids and Proteins and Monitor HIV, HTLV, HBV, HCV, Zika Virus, and Influenza Infection
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Single-Cell Multiplexed Fluorescence Imaging to Visualize Viral Nucleic Acids and Proteins and Monitor HIV, HTLV, HBV, HCV, Zika Virus, and Influenza Infection

Published on: October 29, 2020

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Impact of interplay between autophagy and interferon-alpha in HCV and HCV/HIV infection

B Lajevardi, T Bamdad, H Choobin

    Acta Virologica
    |June 25, 2019
    PubMed

    Insights

    Hepatitis C virus (HCV) and HIV patients show different cellular responses. Beclin-1 gene expression, key to autophagy, was higher in HCV patients, while Interferon-alpha (IFN-α) expression was lower, suggesting distinct immune evasion strategies.

    Area of Science:

    • Virology
    • Immunology
    • Cellular Biology

    Background:

    • Hepatitis C virus (HCV) and Human Immunodeficiency Virus (HIV) are significant global pathogens.
    • HCV infection is prevalent in HIV patients, highlighting complex viral interactions.
    • Viruses exploit host cell machinery for replication, often subverting antiviral defenses.

    Purpose of the Study:

    • To compare the expression of Beclin-1, a key autophagy gene, in response to viral infections.
    • To investigate the effect of Beclin-1 expression on Interferon-alpha (IFN-α) levels in HCV and HCV/HIV patients.
    • To analyze cellular responses in patients with single (HCV) versus co-infection (HCV/HIV).

    Main Methods:

    • Evaluation of 40 peripheral blood mononuclear cell (PBMC) samples from 20 HCV and 20 HCV/HIV patients before treatment.
    • Quantification of HCV viral load using semi-quantitative real-time PCR.
    • Assessment of Beclin-1 and IFN-α gene expression levels via semi-quantitative real-time PCR assay.

    Main Results:

    • Median viral load was 8.3×10^5 copies/ml in the HCV group and 2.1×10^6 copies/ml in the HCV/HIV group.
    • Significantly higher Beclin-1 gene expression was observed in the HCV group compared to the HCV/HIV group.
    • Lower IFN-α gene expression levels were found in the HCV group relative to the HCV/HIV group.

    Conclusions:

    • HCV infection elicits a stronger autophagic response (higher Beclin-1) than HCV/HIV co-infection.
    • The interplay between HCV, HIV, and host autophagy influences IFN-α production.
    • Distinct cellular defense mechanisms are activated in response to single HCV infection versus HCV/HIV co-infection.

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