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Related Experiment Videos

Activation-induced apoptosis in lymphoid systems.

D R Green1, R P Bissonnette, J M Glynn

  • 1La Jolla Institute for Allergy and Immunology, CA 92037.

Seminars in Immunology
|December 1, 1992
PubMed
Summary

Lymphocyte activation can paradoxically lead to cell death via apoptosis. This process, known as activation-induced apoptosis, is crucial for eliminating autoreactive cells and may contribute to T cell depletion in HIV.

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Area of Science:

  • Immunology
  • Cell Biology
  • Molecular Biology

Background:

  • Lymphocyte activation, typically leading to immune responses, can also trigger apoptosis (programmed cell death).
  • Activation-induced apoptosis is observed in both developing and mature lymphocytes.
  • This mechanism is implicated in eliminating autoreactive cells and T cell depletion in HIV.

Purpose of the Study:

  • To explore the phenomenon of activation-induced apoptosis in lymphocytes.
  • To investigate the role of specific signaling pathways and gene products in this process.

Main Methods:

  • Review of recent studies on lymphocyte activation and apoptosis.
  • Focus on signal transduction pathways and gene products involved in activation-induced apoptosis.

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Main Results:

  • Activation-induced apoptosis is a recognized process in lymphocyte biology.
  • The c-myc proto-oncogene is implicated as a key factor in activation-induced apoptosis.
  • This apoptotic pathway may contribute to negative selection and peripheral deletion of lymphocytes.

Conclusions:

  • Activation-induced apoptosis is a critical mechanism for immune system regulation.
  • Understanding this process, including the role of c-myc, is essential for comprehending lymphocyte homeostasis and disease pathogenesis, such as HIV.
  • Further research into signaling pathways is needed to fully elucidate activation-induced apoptosis.