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Viruses, microRNAs and cancer.

S Pfeffer1, O Voinnet

  • 1IBMP-CNRS, rue du Général Zimmer, Strasbourg, France. sebastien.pfeffer@ibmp-ulp.u-strasbg.fr

Oncogene
|October 10, 2006
PubMed
Summary
This summary is machine-generated.

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Many viruses cause cancer by evading cell death and immune responses. Viruses utilize microRNAs (miRNAs) to manipulate host cells, impacting cancer development and viral infection dynamics.

Area of Science:

  • Virology
  • Molecular Biology
  • Oncology

Background:

  • Viruses are significant contributors to human cancers, with up to 15% linked to viral infections.
  • Viruses employ strategies to evade apoptosis and host immune responses.
  • Epstein-Barr virus and other herpesviruses encode their own microRNAs (miRNAs).

Purpose of the Study:

  • To review current knowledge on viral miRNAs.
  • To discuss how mammalian viruses perturb host miRNA expression.
  • To provide insights into the role of viruses and miRNAs in cancer development.

Main Methods:

  • Literature review of viral miRNAs and their roles in host cells.
  • Analysis of viral strategies to manipulate RNA silencing pathways.
  • Discussion of viral miRNA interactions with host transcripts.

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Main Results:

  • Mammalian viruses can hijack the host RNA silencing machinery.
  • Viral-encoded miRNAs can regulate viral genome expression (cis) and host gene expression (trans).
  • Viruses can alter host miRNA expression, contributing to cancer development.

Conclusions:

  • Viral miRNAs represent a complex layer in host-virus interactions.
  • Understanding viral miRNA mechanisms is crucial for insights into virus-associated cancers.
  • Viruses actively manipulate host RNA silencing pathways for their own benefit.