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[Programmed cell death: molecular mechanisms and detection]

Vaiva Lesauskaite1, Laima Ivanoviene

  • 1Kauno medicinos universiteto Kardiologijos institutas, Sukileliu 17, 3007 Kaunas. vaivales@kmu.lt

Medicina (Kaunas, Lithuania)
|December 12, 2002
PubMed

Insights

Apoptosis, programmed cell death, is a vital cellular process regulated by caspases. This review details apoptosis mechanisms, including death-receptor and mitochondrial pathways, and detection methods.

Area of Science:

  • Cell Biology
  • Molecular Biology

Background:

  • Apoptosis, or programmed cell death, is essential for tissue homeostasis.
  • It involves a genetically controlled sequence of cellular events leading to cell destruction.

Purpose of the Study:

  • To review the molecular mechanisms underlying apoptosis.
  • To discuss the pathways of caspase activation.
  • To examine methods for detecting apoptotic cells and potential sources of error.

Main Methods:

  • Literature review of molecular mechanisms of apoptosis.
  • Analysis of caspase activation pathways (death-receptor and mitochondrial).
  • Review of current in situ detection methods (e.g., ISEL, TUNEL).

Main Results:

  • Caspase activation is central to apoptosis execution, leading to characteristic morphological changes.
  • Two primary caspase activation pathways exist: death-receptor mediated and mitochondrial.
  • Mitochondrial pathway involves cytochrome c and apoptosis-inducing factor release.
  • Common detection methods like ISEL and TUNEL have known limitations causing false results.

Conclusions:

  • Understanding apoptosis molecular pathways is crucial for cellular homeostasis.
  • Caspase activation is a key event, triggered by distinct signaling routes.
  • Awareness of detection method limitations is necessary for accurate apoptosis assessment in tissues.

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