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Another way to die: autophagic programmed cell death

Y Tsujimoto1, S Shimizu

  • 1Laboratory of Molecular Genetics, Department of Medical Genetics, Osaka University Medical School, 2-2 Yamadaoka, Suita, Osaka 565-0871, Japan. tsujimot@gene.med.osaka-u.ac.jp

Cell Death and Differentiation
|October 26, 2005
PubMed

Insights

Programmed cell death (PCD) eliminates harmful cells and is vital for development. Autophagic PCD, a distinct cell death pathway involving autophagosomes, is increasingly recognized as crucial for health and disease.

Area of Science:

  • Cell Biology
  • Molecular Biology
  • Developmental Biology

Background:

  • Programmed cell death (PCD) is essential for metazoan development, tissue homeostasis, and removing harmful cells.
  • Dysfunctional PCD is implicated in human diseases such as cancer and degenerative disorders.
  • Apoptosis is a well-known form of PCD, but other mechanisms exist.

Purpose of the Study:

  • To review experimental evidence on autophagic programmed cell death (PCD).
  • To discuss the mechanisms distinguishing autophagic PCD from autophagy-mediated cell survival.

Main Methods:

  • Literature review of recent experimental studies on autophagic PCD.
  • Analysis of morphological and molecular evidence for autophagic PCD.

Main Results:

  • Autophagic PCD is a distinct cell death mechanism characterized by autophagosome formation and dependence on autophagy proteins.
  • Morphological evidence supports autophagic PCD as a defined process.
  • Distinguishing autophagic PCD from autophagy's role in cell survival requires further mechanistic investigation.

Conclusions:

  • Autophagic PCD represents a significant alternative pathway to apoptosis.
  • Understanding autophagic PCD mechanisms is crucial for comprehending cell fate and disease pathology.
  • Further research is needed to elucidate the precise molecular pathways differentiating autophagic PCD from cytoprotective autophagy.

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