The mitochondrial biogenesis regulatory program in cardiac adaptation to ischemia--a putative target for therapeutic intervention
- PMID: 16039972
- DOI: 10.1016/j.tcm.2005.05.001
The mitochondrial biogenesis regulatory program in cardiac adaptation to ischemia--a putative target for therapeutic intervention
Abstract
The resurgence of mitochondrial biology research stems from the realization that the distinct regulation of mitochondria to meet diverse homeostatic demands is driven by exquisite biochemical and molecular control mechanisms. This program termed mitochondrial biogenesis is integral to orchestrating mitochondrial function and appears to exhibit adaptive remodeling following biomechanical and oxidative stress. The major bioenergetic function of mitochondria partitions the final utilization of oxygen between oxidative phosphorylation and reactive oxygen species. As disruption in oxidative phosphorylation and excessive reactive oxygen species contribute to cardiac ischemia-reperfusion injury, we hypothesize that the mitochondrial biogenesis regulatory program is an explicit target for cardiac therapeutic interventions. The objectives of this review are to (a) define the advances in understanding the mitochondrial biogenesis regulatory program integrated to its control of mitochondrial bioenergetics and oxygen utilization, (b) reveal how this program is modulated by chronic hypoxia and ischemic preconditioning, and (c) examine the therapeutic potential of modulating the regulation of mitochondrial biogenesis as a strategy to attenuate ischemia-reperfusion injury.
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