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Updated: Sep 30, 2025

In Vivo Nanovector Delivery of a Heart-specific MicroRNA-sponge
09:53

In Vivo Nanovector Delivery of a Heart-specific MicroRNA-sponge

Published on: June 15, 2018

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MicroRNA-210 Controls Mitochondrial Metabolism and Protects Heart Function in Myocardial Infarction

Rui Song1, Chiranjib Dasgupta1, Cassidy Mulder1

  • 1Lawrence D. Longo, MD Center for Perinatal Biology, Department of Basic Sciences, Loma Linda University School of Medicine, CA.

Circulation
|March 17, 2022
PubMed
Abstract

Insights

MicroRNA-210 protects the heart from ischemia-reperfusion injury by regulating mitochondrial function and reducing harmful reactive oxygen species (ROS). This discovery offers new therapeutic targets for ischemic heart disease.

Area of Science:

  • Cardiovascular Biology
  • Mitochondrial Medicine
  • Molecular Cardiology

Background:

  • Ischemic heart disease is a major global cause of mortality.
  • Myocardial ischemia-reperfusion (IR) injury contributes significantly to heart damage.
  • Understanding protective mechanisms against IR injury is crucial for developing effective treatments.

Purpose of the Study:

  • To investigate the protective role of microRNA-210 against myocardial IR injury.
  • To elucidate the mechanisms by which microRNA-210 influences mitochondrial bioenergetics and reactive oxygen species (ROS) flux.
  • To identify novel therapeutic targets for mitigating IR-induced cardiac dysfunction.

Main Methods:

  • Utilized a murine model of myocardial IR injury, comparing microRNA-210-deficient and wild-type mice.
  • Assessed cardiac function using echocardiography.
  • Analyzed mitochondrial bioenergetics and ROS production via Seahorse XF24 Analyzer and other assays.

Main Results:

  • MicroRNA-210 deficiency exacerbated cardiac dysfunction and myocardial infarction post-IR, particularly in male mice.
  • MicroRNA-210 inhibited mitochondrial oxygen consumption, enhanced glycolysis, and reduced mitochondrial ROS.
  • Glycerol-3-phosphate dehydrogenase was identified as a novel cardiac target of microRNA-210, mediating its effects on mitochondrial metabolism and ROS.

Conclusions:

  • MicroRNA-210, by targeting glycerol-3-phosphate dehydrogenase, regulates mitochondrial bioenergetics and ROS flux, thereby improving cardiac function in IR injury.
  • These findings provide novel insights into the pathogenesis of ischemic heart disease.
  • MicroRNA-210 and glycerol-3-phosphate dehydrogenase represent potential therapeutic targets for treating myocardial IR injury.
Keywords:
energy metabolismglycerolphosphate dehydrogenasemicroRNA-210myocardial infarction

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