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Dissecting Host-virus Interaction in Lytic Replication of a Model Herpesvirus
11:28

Dissecting Host-virus Interaction in Lytic Replication of a Model Herpesvirus

Published on: October 7, 2011

Virokines in the pathogenesis of cancer: focus on human herpesvirus 8

Mariam Klouche1, Giuseppe Carruba, Luigi Castagnetta

  • 1Institute for Clinical Chemistry and Laboratory Medicine, University of Regensburg, Germany. mariam.klouche@laborzentrum-bremen.de

Annals of the New York Academy of Sciences
|January 15, 2005
PubMed

Insights

Human herpesvirus 8 (HHV8) hijacks cellular genes, creating viral versions like viral interleukin-6. This unique protein drives HHV8-associated tumor growth by altering cell signaling and immune responses.

Area of Science:

  • Virology
  • Oncology
  • Immunology

Background:

  • DNA viruses capture cellular genes for immune evasion and growth control.
  • Human herpesvirus 8 (HHV8) is an oncogenic virus linked to Kaposi's sarcoma and lymphomas.
  • HHV8 encodes viral proteins that manipulate host cell functions.

Purpose of the Study:

  • To review the role of viral cytokines (virokines) in cancer.
  • To highlight the unique viral interleukin-6 (vIL-6) encoded by HHV8.
  • To compare vIL-6 with human IL-6 in HHV8-associated tumor pathophysiology.

Main Methods:

  • Literature review on virokines and HHV8 pathogenesis.
  • Comparative analysis of viral and human interleukin-6 signaling.
  • Discussion of HHV8's manipulation of cellular regulatory genes.

Main Results:

  • HHV8 captures cellular genes, including those for immune recognition and growth control.
  • HHV8 encodes a unique vIL-6, essential for tumor transformation and proliferation.
  • vIL-6 differs from human IL-6 in receptor binding and signal transduction.

Conclusions:

  • Viral mimicry of cellular genes is a key viral strategy.
  • vIL-6 plays a critical role in HHV8-driven oncogenesis.
  • Understanding vIL-6 provides insights into cytokine biology and viral pathogenesis.

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