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Related Experiment Videos

Viral interference with apoptosis

J M Hardwick1

  • 1SHPH, Johns Hopkins Schools of Public Health and Medicine, 615 North Wolfe St, Baltimore, MD, 21205, USA.

Seminars in Cell & Developmental Biology
|July 17, 1998
PubMed
Summary

Viruses use diverse strategies to block programmed cell death, ensuring their survival and replication within host cells. Studying these viral tactics enhances our understanding of cell death and viral pathogenesis.

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Area of Science:

  • Virology
  • Cell Biology
  • Immunology

Background:

  • Viruses must evade host defenses to replicate.
  • Programmed cell death (apoptosis) is a key cellular defense mechanism.
  • Viral infection often triggers apoptosis, posing a threat to viral propagation.

Purpose of the Study:

  • To review the diverse mechanisms viruses employ to inhibit programmed cell death.
  • To highlight the importance of these viral evasion strategies for viral life cycles.
  • To underscore the contribution of studying viral anti-apoptotic strategies to understanding cell death pathways and pathogenesis.

Main Methods:

  • Literature review of viral strategies targeting apoptosis.
  • Analysis of molecular mechanisms used by viruses to subvert cell death signaling.
  • Examination of the impact of viral anti-apoptotic mechanisms on viral pathogenesis.

Main Results:

  • Viruses inhibit apoptosis by interfering with death receptor signaling.
  • Some viruses mimic cellular anti-apoptotic proteins, such as Bcl-2 family members.
  • Viruses encode inhibitors of caspases and other proteases crucial for apoptosis.

Conclusions:

  • Viral subversion of programmed cell death is essential for viral persistence, latency, and progeny production.
  • Understanding viral anti-apoptotic mechanisms provides critical insights into cellular death pathways.
  • These viral strategies significantly impact viral pathogenesis and disease progression.

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