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Role of Glutaredoxin-1 and Glutathionylation in Cardiovascular Diseases

Mannix Burns1, Syed Husain Mustafa Rizvi1,2, Yuko Tsukahara1

  • 1Vascular Biology Section, Whitaker Cardiovascular Institute, Boston University School of Medicine, 650 Albany St., Boston, MA 02118, USA.

International Journal of Molecular Sciences
|September 19, 2020
PubMed

Insights

Glutathionylation (GSylation) regulates proteins and is key in cardiovascular diseases. Glutaredoxins (Glrxs) reverse GSylation, offering potential therapeutic targets for conditions like heart disease.

Area of Science:

  • Biochemistry and Molecular Biology
  • Cardiovascular Research
  • Oxidative Stress and Redox Signaling

Background:

  • Cardiovascular diseases (CVDs) are a leading global cause of mortality, with increasing incidence.
  • Excessive reactive oxygen and nitrogen species contribute to CVD pathogenesis.
  • Glutathione (GSH), a major cellular antioxidant, mitigates oxidative stress via glutathionylation (GSylation) of proteins.

Purpose of the Study:

  • To review the critical roles of GSylation and glutaredoxins (Glrxs) in cardiovascular pathophysiology.
  • To highlight the specific involvement of glutaredoxin-1 (Glrx) in various CVDs.
  • To explore the therapeutic potential of Glrx in treating cardiovascular conditions.

Main Methods:

  • Literature review focusing on GSylation and Glrx in cardiovascular diseases.
  • Analysis of the regulatory mechanisms of GSylation by Glrxs.
  • Examination of Glrx's role in specific CVD models, including myocardial ischemia/reperfusion, cardiac hypertrophy, peripheral arterial disease, and atherosclerosis.

Main Results:

  • GSylation significantly alters protein activity, function, and structure, acting as a key regulator of cellular processes.
  • Glrxs, particularly Glrx, are crucial for reversing GSylation, maintaining redox balance, and enabling redox signaling.
  • Dysregulation of GSylation and Glrx function is implicated in the progression of major cardiovascular diseases.

Conclusions:

  • GSylation and Glrx are integral to cellular redox homeostasis and cardiovascular health.
  • Understanding the interplay between GSylation and Glrx provides insights into CVD mechanisms.
  • Glrx represents a promising therapeutic target for mitigating cardiovascular disease progression.

Keywords:
cardiovascular diseaseglutaredoxinglutathionylationredox signaling

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