miR-29 contributes to normal endothelial function and can restore it in cardiometabolic disorders

Research output: Contribution to journalArticle

Authors

External Institution(s)

  • Medical College of Wisconsin

Details

Original languageEnglish (US)
Article numbere8046
JournalEMBO molecular medicine
Volume10
Issue number3
StatusPublished - Mar 2018
Peer-reviewedYes

Abstract

We investigated the role of microRNAs (miRNA) in endothelial dysfunction in the setting of cardiometabolic disorders represented by type 2 diabetes mellitus (T2DM). miR-29 was dysregulated in resistance arterioles obtained by biopsy in T2DM patients. Intraluminal delivery of miR-29a-3p or miR-29b-3p mimics restored normal endothelium-dependent vasodilation (EDVD) in T2DM arterioles that otherwise exhibited impaired EDVD. Intraluminal delivery of anti-miR-29b-3p in arterioles from non-DM human subjects or rats or targeted mutation of Mir29b-1/a gene in rats led to impaired EDVD and exacerbation of hypertension in the rats. miR-29b-3p mimic increased, while anti-miR-29b-3p or Mir29b-1/a gene mutation decreased, nitric oxide levels in arterioles. The mutation of Mir29b-1/a gene led to preferential differential expression of genes related to nitric oxide including Lypla1. Lypla1 was a direct target of miR-29 and could abrogate the effect of miR-29 in promoting nitric oxide production. Treatment with Lypla1 siRNA improved EDVD in arterioles obtained from T2DM patients or Mir29b-1/a mutant rats or treated with anti-miR-29b-3p. These findings indicate miR-29 is required for normal endothelial function in humans and animal models and has therapeutic potential for cardiometabolic disorders.

    Research areas

  • diabetes, endothelium, hypertension, microRNA, nitric oxide

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Widlansky, ME, Jensen, DM, Wang, J, Liu, Y, Geurts, AM, Kriegel, AJ, Liu, P, Ying, R, Zhang, G, Casati, M, Chu, C, Malik, M, Branum, A, Tanner, MJ, Tyagi, S, Usa, K & Liang, M 2018, 'miR-29 contributes to normal endothelial function and can restore it in cardiometabolic disorders', EMBO molecular medicine, vol. 10, no. 3, e8046. https://doi.org/10.15252/emmm.201708046