Regulating Polyamine Metabolism by miRNAs in Diabetic Cardiomyopathy

Tyler N. Kambis, Hadassha M.N. Tofilau, Flobater I. Gawargi, Surabhi Chandra, Paras K. Mishra

Research output: Contribution to journalReview articlepeer-review

1 Scopus citations

Abstract

Purpose of Review: Insulin is at the heart of diabetes mellitus (DM). DM alters cardiac metabolism causing cardiomyopathy, ultimately leading to heart failure. Polyamines, organic compounds synthesized by cardiomyocytes, have an insulin-like activity and effect on glucose metabolism, making them metabolites of interest in the DM heart. This review sheds light on the disrupted microRNA network in the DM heart in relation to developing novel therapeutics targeting polyamine biosynthesis to prevent/mitigate diabetic cardiomyopathy. Recent Findings: Polyamines prevent DM-induced upregulation of glucose and ketone body levels similar to insulin. Polyamines also enhance mitochondrial respiration and thereby regulate all major metabolic pathways. Non-coding microRNAs regulate a majority of the biological pathways in our body by modulating gene expression via mRNA degradation or translational repression. However, the role of miRNA in polyamine biosynthesis in the DM heart remains unclear. Summary: This review discusses the regulation of polyamine synthesis and metabolism, and its impact on cardiac metabolism and circulating levels of glucose, insulin, and ketone bodies. We provide insights on potential roles of polyamines in diabetic cardiomyopathy and putative miRNAs that could regulate polyamine biosynthesis in the DM heart. Future studies will unravel the regulatory roles these miRNAs play in polyamine biosynthesis and will open new doors in the prevention/treatment of adverse cardiac remodeling in diabetic cardiomyopathy.

Original languageEnglish (US)
Article number52
JournalCurrent diabetes reports
Volume21
Issue number12
DOIs
StatePublished - Dec 2021

Keywords

  • Diabetes
  • Heart
  • Insulin
  • Ketone body
  • Methionine cycle
  • T1DM
  • T2DM
  • Urea cycle

ASJC Scopus subject areas

  • Internal Medicine
  • Endocrinology, Diabetes and Metabolism

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