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Fas ligand-induced apoptosis

S Nagata1

  • 1Department of Genetics, Osaka Medical School, Japan. nagata@genetic.med.osaka-u.ac.jp

Annual Review of Genetics
|February 26, 2000
PubMed

Insights

Programmed cell death, or apoptosis, regulates the immune response. Dysregulation of apoptosis signaling molecules can lead to cell hyper-proliferation or tissue destruction.

Area of Science:

  • Immunology
  • Cell Biology
  • Biochemistry

Background:

  • The immune system's function relies on regulated cell proliferation, differentiation, and programmed cell death (apoptosis).
  • Apoptosis is initiated by external stimuli binding to cell receptors, activating an intracellular death program.

Purpose of the Study:

  • To elucidate the regulatory mechanisms of apoptosis in the immune response.
  • To understand the consequences of apoptosis dysregulation in cellular and tissue homeostasis.

Main Methods:

  • Investigated the role of death factors, receptors, and caspase cascades in initiating and executing apoptosis.
  • Analyzed the effects of loss-of-function mutations in apoptosis signaling molecules.

Main Results:

  • Activated caspases trigger cellular component cleavage, leading to morphological changes and DNA degradation.
  • Loss-of-function mutations in apoptosis regulators result in uncontrolled cell proliferation.
  • Exaggerated apoptosis signaling causes extensive tissue damage.

Conclusions:

  • Apoptosis is a critical, tightly regulated process in the immune system.
  • Aberrations in apoptosis signaling pathways have severe implications for health, contributing to diseases like cancer and autoimmune disorders.

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