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Apaf1 in developmental apoptosis and cancer: how many ways to die?

F Cecconi1, P Gruss

  • 1Department of Biology, University of Rome Tor Vergata, Italy. francesco.cecconi@uniroma2.it

Cellular and Molecular Life Sciences : CMLS
|November 15, 2001
PubMed

Insights

Apoptotic protease activating factor 1 (Apaf1) is crucial for embryonic development and regulates cell death. Its deficiency causes embryonic lethality and impacts cancer development, highlighting its critical roles.

Area of Science:

  • Cell Biology
  • Developmental Biology
  • Cancer Biology

Background:

  • Apoptotic protease activating factor 1 (Apaf1) is a key component of the apoptosome, central to programmed cell death.
  • Apaf1 deficiency in mice results in embryonic lethality, affecting various developmental processes.
  • Apaf1 plays a role in regulating neuronal founder cell death during brain development.

Purpose of the Study:

  • To review the diverse roles of Apaf1 in embryonic development and cell death pathways.
  • To explore the involvement of Apaf1 in cancer onset and progression.
  • To analyze the embryonic strategies for initiating cell suicide at different developmental stages.

Main Methods:

  • Review of existing literature on Apaf1 function in development and disease.
  • Analysis of phenotypes in Apaf1-deficient mouse models.
  • Examination of Apaf1's role in cancer, including human melanoma mutations.

Main Results:

  • Apaf1 deficiency leads to embryonic lethality with developmental defects in the brain, inner ear, and limbs.
  • Apaf1-deficient embryos exhibit altered caspase-dependent and -independent cell death pathways.
  • Mutations in APAF1 are found in human melanomas, and its depletion promotes cancer in mouse models.

Conclusions:

  • Apaf1 is essential for normal embryonic development and proper regulation of apoptosis.
  • Dysregulation of Apaf1 contributes to malignant transformation and cancer progression.
  • Understanding Apaf1's multifaceted roles is critical for both developmental biology and oncology.

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