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Induction of apoptosis by antimycin A in differentiated PC12 cell line

Xu Lanju1, Xu Jing, Liu Shichang

  • 1College of Medicine, Tianjin, 300060, China; CSPC The Institute of Pharmaceutical Research Shijiazhuang, Hebei, 050051, China.

Journal of Applied Toxicology : JAT
|July 23, 2013
PubMed

Insights

Antimycin A (AMA) induces PC12 cell apoptosis by inhibiting mitochondrial electron transport. This process involves increased reactive oxygen species (ROS) and calcium (Ca2+), which are key mediators of cell death.

Area of Science:

  • Biochemistry
  • Cell Biology
  • Toxicology

Background:

  • Antimycin A (AMA) inhibits mitochondrial electron transport chain complex III.
  • AMA-induced inhibition elevates reactive oxygen species (ROS) production.

Purpose of the Study:

  • To investigate the in vitro effects of Antimycin A on PC12 cells.
  • To elucidate the roles of ROS and Ca2+ in AMA-induced apoptosis.

Main Methods:

  • PC12 cell culture and treatment with Antimycin A.
  • Assessment of apoptosis via nuclear morphology and flow cytometry.
  • Measurement of intracellular ROS and Ca2+ levels.
  • Utilized Ca2+ chelators, channel blockers, ER Ca2+ release inhibitors, and ROS scavengers.

Main Results:

  • Antimycin A induced significant PC12 cell apoptosis.
  • Early stages of AMA treatment showed increased ROS and Ca2+ levels.
  • Ca2+ chelators and ROS scavengers notably delayed AMA-induced apoptosis.

Conclusions:

  • Antimycin A triggers PC12 cell apoptosis.
  • Reactive oxygen species (ROS) and calcium (Ca2+) are critical mediators in AMA-induced apoptosis.
Keywords:
Ca2+PC12 cellsROSantimycin Aapoptosismitochondria

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