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Molecular cell death platforms and assemblies

Peter D Mace1, Stefan J Riedl

  • 1Program in Apoptosis and Cell Death Research, Sanford-Burnham Medical Research Institute, 10901 North Torrey Pines Road, La Jolla, CA 92037, USA.

Current Opinion in Cell Biology
|September 7, 2010
PubMed

Insights

Animal cells use complex signaling pathways to control programmed cell death (apoptosis). These pathways involve assembling protein platforms that activate specific caspases, ensuring controlled cell death.

Area of Science:

  • Cellular biology
  • Molecular mechanisms of apoptosis

Background:

  • Multicellular animals possess diverse mechanisms to manage apoptosis.
  • Apoptosis typically involves activating apical caspases, leading to executioner caspases and cell death.

Purpose of the Study:

  • To elucidate the structural basis of signaling platform assembly in apoptosis.
  • To describe the regulation of these molecular platforms.

Main Methods:

  • Structural biology approaches to analyze protein complex formation.
  • Investigation of proximity-dependent activation and post-translational modifications.

Main Results:

  • Identified common protein domains in apoptosome, PIDDosome, and death receptor complexes.
  • Detailed the checks-and-balances ensuring appropriate caspase activation.

Conclusions:

  • Apoptosis signaling platforms, while diverse, share principles of proximity-dependent activation.
  • Structural understanding is key to comprehending apoptosis regulation.

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