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Activation of Apoptosis by Cytoplasmic Microinjection of Cytochrome c
07:42

Activation of Apoptosis by Cytoplasmic Microinjection of Cytochrome c

Published on: June 29, 2011

Which CIDE are you on? Apoptosis and energy metabolism

Tomo Yonezawa1, Riho Kurata, Minoru Kimura

  • 1Division of Basic Medical Science and Molecular Medicine, School of Medicine, Tokai University, Bohseidai, Ishehara, Kanagawa 259-1193, Japan. yonet2301@yahoo.co.jp

Molecular Biosystems
|October 23, 2010
PubMed

Insights

Cell death-inducing DNA fragmentation factor-alpha (CIDE) proteins regulate energy metabolism and lipid droplet formation. Novel research reveals their roles in apoptosis and AMPK activity, expanding our understanding of CIDE protein functions.

Area of Science:

  • Molecular Biology
  • Cell Biology
  • Metabolic Research

Background:

  • Cell death-inducing DNA fragmentation factor-alpha (CIDE) proteins (CIDEA, CIDEB, CIDEC/Fsp27) were identified in 1998.
  • Initial studies indicated their involvement in apoptosis.
  • Recent research suggests broader physiological roles beyond apoptosis.

Purpose of the Study:

  • To review and elucidate novel functions of CIDE proteins.
  • To explore the physiological roles of CIDE proteins in energy metabolism and lipid droplet formation.
  • To highlight recent findings on post-translational modifications and protein interactions.

Main Methods:

  • Gene-targeting studies in mice.
  • Glycoproteomics analysis.
  • Studies using mouse embryonic fibroblasts.

Main Results:

  • Mice deficient in CIDE proteins show lean phenotypes, reduced lipid droplet size, and increased metabolic rate.
  • Glycosylation of CIDE proteins influences TGF-beta 1-dependent apoptosis.
  • CIDEA regulates AMPK activity through ubiquitin-dependent proteasomal degradation.

Conclusions:

  • CIDE proteins are crucial regulators of energy metabolism and lipid droplet formation.
  • Post-translational modifications and protein interactions significantly impact CIDE protein function.
  • Further research is needed to fully elucidate the complex physiological roles of CIDE proteins.

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