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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

CMTM8 induces caspase-dependent and -independent apoptosis through a mitochondria-mediated pathway

Caining Jin1, Ying Wang, Wenling Han

  • 1Center for Human Disease Genomics, Peking University, Beijing, PR China.

Journal of Cellular Physiology
|December 7, 2006
PubMed

Insights

CMTM8 overexpression reduces Bad phosphorylation, promoting apoptosis. This suggests CMTM8

Area of Science:

  • Cell Biology
  • Molecular Biology
  • Cancer Research

Background:

  • Mitochondria-mediated apoptosis is regulated by Bcl-2 family proteins.
  • Epidermal growth factor (EGF) signaling impacts apoptosis via Bad phosphorylation.
  • EGF receptor (EGFR) pathways are implicated in cancer progression.

Purpose of the Study:

  • To investigate the role of CMTM8 in apoptosis regulation.
  • To determine the effect of CMTM8 on EGF-induced signaling pathways.
  • To explore CMTM8 as a potential therapeutic gene for EGFR-targeted anticancer therapy.

Main Methods:

  • Western blot analysis
  • Immunofluorescence microscopy
  • Flow cytometry
  • Confocal microscopy

Main Results:

  • CMTM8 overexpression decreased Bad-S112 phosphorylation.
  • CMTM8-induced apoptosis involves mitochondria and is regulated by Bad and Bcl-xL.
  • CMTM8 attenuated EGFR-mediated signaling by reducing ERK1/2 phosphorylation.

Conclusions:

  • CMTM8 acts as a negative regulator of EGF-induced signaling.
  • CMTM8 facilitates mitochondria-mediated apoptosis.
  • CMTM8 holds potential as a therapeutic gene for EGFR-targeted anticancer therapy.

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