Redox signaling in cardiac renewal

Wataru Kimura, Shalini Muralidhar, Diana C. Canseco, Robyn Nguyen Puente, Chengcheng Zhang, Feng Xiao, Yezan H. Abderrahman, Hesham A Sadek

Research output: Contribution to journalReview articlepeer-review

18 Scopus citations


Significance: Utilizing oxygen (O2) through mitochondrial oxidative phosphorylation enables organisms to generate adenosine triphosphate (ATP) with a higher efficiency than glycolysis, but it results in increased reactive oxygen species production from mitochondria, which can result in stem cell dysfunction and senescence. Recent Advances: In the postnatal organism, the hematopoietic system represents a classic example of the role of stem cells in cellular turnover and regeneration. However, in other organs such as the heart, both the degree and source of cellular turnover have been heavily contested. Critical Issues: Although recent evidence suggests that the major source of the limited cardiomyocyte turnover in the adult heart is cardiomyocyte proliferation, the identity and potential role of undifferentiated cardiac progenitor cells remain controversial. Several types of cardiac progenitor cells have been identified, and several studies have identified an important role of redox and metabolic regulation in survival and differentiation of cardiac progenitor cells. Perhaps a simple way to approach these controversies is to focus on the multipotentiality characteristics of a certain progenitor population, and not necessarily its ability to give rise to all cell types within the heart. In addition, it is important to note that cycling cells in the heart may express markers of differentiation or may be truly undifferentiated, and for the purpose of this review, we will refer to these cycling cells as progenitors. Future Directions: We propose that hypoxia, redox signaling, and metabolic phenotypes are major regulators of cardiac renewal, and may prove to be important therapeutic targets for heart regeneration. Antioxid. Redox Signal. 21, 1660-1673.

Original languageEnglish (US)
Pages (from-to)1660-1673
Number of pages14
JournalAntioxidants and Redox Signaling
Issue number11
StatePublished - Oct 10 2014

ASJC Scopus subject areas

  • Molecular Biology
  • Biochemistry
  • Physiology
  • Clinical Biochemistry
  • Cell Biology


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