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Updated: Aug 26, 2026

Identifying Dysregulated Genes Induced by Kaposi's Sarcoma-associated Herpesvirus (KSHV)
07:02

Identifying Dysregulated Genes Induced by Kaposi's Sarcoma-associated Herpesvirus (KSHV)

Published on: September 14, 2010

Manipulation of glycogen-synthase kinase-3 activity in KSHV-associated cancers

Masahiro Fujimuro1, S Diane Hayward

  • 1Viral Oncology Program, Sidney Kimmel Cancer Center, Johns Hopkins School of Medicine, 1650 Orleans St, Baltimore, MD 21231, USA.

Journal of Molecular Medicine (Berlin, Germany)
|April 3, 2004
PubMed

Insights

The Kaposi's sarcoma-associated herpesvirus (KSHV) protein LANA stabilizes beta-catenin, a protein linked to cancer. This viral mechanism contributes to cancer development in affected patients.

Area of Science:

  • Oncology
  • Virology
  • Molecular Biology

Background:

  • Kaposi's sarcoma-associated herpesvirus (KSHV) is linked to cancers in immunocompromised individuals.
  • Beta-catenin overexpression is observed in KSHV-associated Kaposi's sarcoma and primary effusion lymphoma.
  • Understanding beta-catenin dysregulation is crucial for cancer research.

Purpose of the Study:

  • To investigate the mechanism of beta-catenin dysregulation in KSHV-associated cancers.
  • To identify the role of KSHV-encoded proteins in beta-catenin stabilization.

Main Methods:

  • Analysis of beta-catenin regulation in KSHV-infected cells.
  • Investigation of the interaction between KSHV LANA protein and GSK-3.
  • Assessment of GSK-3 cellular localization and its effect on beta-catenin.

Main Results:

  • KSHV-encoded LANA protein was found to stabilize beta-catenin.
  • LANA binds to and inhibits the negative regulator GSK-3.
  • This interaction leads to cell-cycle-dependent nuclear accumulation of GSK-3.
  • Beta-catenin dysregulation is confirmed as a mechanism contributing to KSHV-associated cancers.

Conclusions:

  • The KSHV LANA protein plays a key role in beta-catenin stabilization.
  • GSK-3 redistribution is a novel mechanism for beta-catenin dysregulation.
  • These findings offer insights into the oncogenesis of KSHV-associated malignancies.

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