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Int. J. Mol. Sci. 2013, 14(6), 11190-11207; doi:10.3390/ijms140611190

Angiotensin II Regulates microRNA-132/-212 in Hypertensive Rats and Humans

Department of Cardiovascular and Renal Research, Institute of Molecular Medicine, University of Southern Denmark, DK-5000 Odense, Denmark
Department of Clinical Biochemistry and Pharmacology, Odense University Hospital, Sdr. Boulevard 29, DK-5000 Odense, Denmark
Department of Vascular Surgery, Einthoven Laboratory for Experimental Vascular Medicine, Leiden University Medical Center, 2333 ZA Leiden, The Netherlands
Department of Cardiac and Thoracic Surgery, Odense University Hospital, Sdr. Boulevard 29, DK-5000 Odense, Denmark
Department of Pathology, University of Southern Denmark, DK-5000 Odense, Denmark
These authors contributed equally to this work.
Author to whom correspondence should be addressed.
Received: 21 March 2013 / Revised: 25 April 2013 / Accepted: 15 May 2013 / Published: 27 May 2013
(This article belongs to the Special Issue Regulation by non-coding RNAs 2013)
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MicroRNAs (miRNAs), a group of small non-coding RNAs that fine tune translation of multiple target mRNAs, are emerging as key regulators in cardiovascular development and disease. MiRNAs are involved in cardiac hypertrophy, heart failure and remodeling following cardiac infarction; however, miRNAs involved in hypertension have not been thoroughly investigated. We have recently reported that specific miRNAs play an integral role in Angiotensin II receptor (AT1R) signaling, especially after activation of the Gαq signaling pathway. Since AT1R blockers are widely used to treat hypertension, we undertook a detailed analysis of potential miRNAs involved in Angiotensin II (AngII) mediated hypertension in rats and hypertensive patients, using miRNA microarray and qPCR analysis. The miR-132 and miR-212 are highly increased in the heart, aortic wall and kidney of rats with hypertension (159 ± 12 mm Hg) and cardiac hypertrophy following chronic AngII infusion. In addition, activation of the endothelin receptor, another Gαq coupled receptor, also increased miR-132 and miR-212. We sought to extend these observations using human samples by reasoning that AT1R blockers may decrease miR-132 and miR-212. We analyzed tissue samples of mammary artery obtained from surplus arterial tissue after coronary bypass operations. Indeed, we found a decrease in expression levels of miR-132 and miR-212 in human arteries from bypass-operated patients treated with AT1R blockers, whereas treatment with β-blockers had no effect. Taken together, these data suggest that miR-132 and miR-212 are involved in AngII induced hypertension, providing a new perspective in hypertensive disease mechanisms. View Full-Text
Keywords: hypertension; Angiotensin II; AT1R; AT1 receptor blocker; microRNA hypertension; Angiotensin II; AT1R; AT1 receptor blocker; microRNA

This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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MDPI and ACS Style

Eskildsen, T.V.; Jeppesen, P.L.; Schneider, M.; Nossent, A.Y.; Sandberg, M.B.; Hansen, P.B.L.; Jensen, C.H.; Hansen, M.L.; Marcussen, N.; Rasmussen, L.M.; Bie, P.; Andersen, D.C.; Sheikh, S.P. Angiotensin II Regulates microRNA-132/-212 in Hypertensive Rats and Humans. Int. J. Mol. Sci. 2013, 14, 11190-11207.

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