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Monitoring Dynamic Changes In Mitochondrial Calcium Levels During Apoptosis Using A Genetically Encoded Calcium Sensor
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Monitoring Dynamic Changes In Mitochondrial Calcium Levels During Apoptosis Using A Genetically Encoded Calcium Sensor

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Redox active calcium ion channels and cell death

Paul Waring1

  • 1Department of Chemistry, Centre for the Study of Bioactive Molecules, The Faculties, Australian National University, Acton, Canberra, ACT 0200, Australia. Paul.Waring@anu.edu.au

Archives of Biochemistry and Biophysics
|January 5, 2005
PubMed

Insights

Reactive oxygen and nitrogen species influence calcium channels, impacting cell death pathways. This review explores how these redox-active channels regulate both apoptotic and necrotic cell death.

Area of Science:

  • Cell Biology
  • Biochemistry
  • Toxicology

Background:

  • Calcium ions are critical regulators of cellular processes, including programmed cell death (apoptosis) and necrosis.
  • Intracellular calcium levels and fluxes, controlled by membrane channels, are central to modulating cell death.
  • Calcium channels are influenced by various factors, including ligands, voltage, and calmodulin.

Purpose of the Study:

  • To review recent literature on the role of reactive oxygen and nitrogen species (ROS/RNS) in modulating calcium channel activity.
  • To elucidate the connection between redox-active calcium channels and their impact on apoptotic and necrotic cell death.
  • To understand how ROS/RNS affect calcium homeostasis and cell fate.

Main Methods:

  • Literature review of recent scientific publications.
  • Analysis of studies investigating calcium channel function.
  • Examination of research on the effects of ROS/RNS on cellular signaling and cell death.

Main Results:

  • Many calcium channels are sensitive to reactive oxygen and nitrogen species (ROS/RNS).
  • ROS/RNS can alter the activity of ligand-activated and voltage-dependent calcium channels.
  • This modulation of calcium channels by ROS/RNS plays a significant role in initiating or propagating cell death.

Conclusions:

  • Redox-active calcium channels are key players in the regulation of cell death.
  • The interaction between ROS/RNS and calcium channels offers potential therapeutic targets for diseases involving cell death.
  • Understanding these pathways is crucial for deciphering cellular responses to oxidative stress and toxins.

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