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Updated: Jun 4, 2026

Establishment and Quantification of De Novo Lytic Infection by Cell-free Kaposi's Sarcoma-Associated Herpesvirus
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Establishment and Quantification of De Novo Lytic Infection by Cell-free Kaposi's Sarcoma-Associated Herpesvirus

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Inhibition of lytic reactivation of Kaposi's sarcoma-associated herpesvirus by alloferon

Naeun Lee1, Seyeon Bae, Hyemin Kim

  • 1Department of Anatomy and Tumor Immunity Medical Research Center, Seoul National University College of Medicine, Seoul, Korea.

Antiviral Therapy
|February 12, 2011
PubMed
Abstract

Insights

Alloferon, an immunomodulatory peptide, effectively regulates Kaposi's sarcoma-associated herpesvirus (KSHV) by inhibiting viral gene expression and enhancing natural killer (NK) cell activity. This peptide shows promise as an antiviral agent against KSHV.

Area of Science:

  • Immunology
  • Virology
  • Molecular Biology

Background:

  • Alloferon is an immunomodulatory peptide with known antiviral properties against herpesviruses.
  • Kaposi's sarcoma-associated herpesvirus (KSHV) is a significant human oncogenic herpesvirus.
  • Understanding alloferon's impact on KSHV is crucial for developing novel antiviral therapies.

Purpose of the Study:

  • To investigate alloferon's effect on the KSHV life cycle.
  • To elucidate the underlying mechanisms of alloferon's antiviral action.
  • To assess alloferon's impact on natural killer (NK) cell-mediated antiviral immunity.

Main Methods:

  • KSHV-infected BCBL-1 cells were treated to induce the lytic cycle.
  • Cell proliferation and viral gene expression were analyzed.
  • Calcium influx, ERK pathway activation, and NK cell cytotoxicity were evaluated.

Main Results:

  • Alloferon suppressed KSHV lytic gene expression (RTA, K8, vIRF2) and recovered cell proliferation.
  • Alloferon inhibited TPA-induced calcium influx, ERK phosphorylation, and AP-1 activation.
  • Alloferon enhanced NK cell cytotoxicity via increased perforin/granzyme secretion.

Conclusions:

  • Alloferon effectively regulates the KSHV life cycle by down-regulating AP-1 activity.
  • Alloferon enhances antiviral immunity by up-regulating NK cell cytotoxicity.
  • Alloferon demonstrates potential as an antiviral agent against KSHV.

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