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Selective mechanisms utilized by persistent and oncogenic viruses to interfere with antigen processing and

R Ehrlich1

  • 1Department of Cell Research and Immunology, George S. Wise Faculty of Life Sciences, Tel Aviv University, Ramat Aviv, Israel.

Immunologic Research
|January 1, 1995
PubMed
Summary

Viruses evade cell-mediated immunity by disrupting antigen processing and presentation. This viral immune evasion is crucial for persistent infections and tumor development.

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Area of Science:

  • Immunology
  • Virology
  • Molecular Biology

Background:

  • Cell-mediated immunity eliminates infected cells and tumors.
  • Persistent viruses and oncogenic viruses evade immune responses.
  • Viruses suppress antigen presentation to escape immune detection.

Purpose of the Study:

  • To review viral mechanisms for interfering with antigen processing and presentation.
  • To discuss the significance of these mechanisms for viral persistence and tumor progression.

Main Methods:

  • Review of scientific literature on viral immune evasion strategies.
  • Analysis of molecular mechanisms used by viruses to interfere with antigen processing and presentation.

Main Results:

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  • Viruses downregulate genes for MHC class I, peptide transporters, and proteasome subunits.
  • Viruses interfere with the transport of MHC class I molecules to the cell surface.
  • Some viruses reduce viral protein expression or present non-immunogenic epitopes during latency.

    • Conclusions:

    • Viral interference with antigen processing and presentation is a key strategy for immune evasion.
    • These mechanisms contribute to viral persistence in the host.
    • Interference with antigen presentation facilitates virus-associated tumor progression.