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Expression of cardiovascular-related microRNAs is altered in L-arginine:glycine amidinotransferase deficient mice

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Item Type:Article
Title:Expression of cardiovascular-related microRNAs is altered in L-arginine:glycine amidinotransferase deficient mice
Creators Name:Jensen, M., Müller, C., Huebner, N., Patone, G., Saar, K., Choe, C.U., Schwedhelm, E. and Zeller, T.
Abstract:In humans and mice, L-arginine:glycine amidinotransferase (AGAT) and its metabolites homoarginine (hArg) and creatine have been linked to cardiovascular disease (CVD), specifically myocardial infarction (MI) and heart failure (HF). The underlying molecular and regulatory mechanisms, however, remain unclear. To identify potential pathways of cardiac AGAT metabolism, we sequenced microRNA (miRNA) in left ventricles of wild-type (wt) compared to AGAT-deficient (AGAT(-/-)) mice. Using literature search and validation by qPCR, we identified eight significantly regulated miRNAs in AGAT(-/-) mice linked to atherosclerosis, MI and HF: miR-30b, miR-31, miR-130a, miR-135a, miR-148a, miR-204, miR-298, and let-7i. Analysis of Gene Expression Omnibus (GEO) data confirmed deregulation of these miRNAs in mouse models of MI and HF. Quantification of miRNA expression by qPCR in AGAT(-/-) mice supplemented with creatine or hArg revealed that miR-30b, miR-31, miR-130a, miR-148a, and miR-204 were regulated by creatine, while miR-135a and miR-298 showed a trend of regulation by hArg. Finally, bioinformatics-based target prediction showed that numerous AGAT-dependent genes previously linked to CVD are likely to be regulated by the identified miRNAs. Taken together, AGAT deficiency and hArg/creatine supplementation are associated with cardiac miRNA expression which may influence cardiac (dys)function and CVD.
Keywords:Cardiovascular Diseases, Cardiovascular Genetics, miRNAs, Animals, Mice
Source:Scientific Reports
ISSN:2045-2322
Publisher:Nature Publishing Group
Volume:12
Number:1
Page Range:5108
Date:24 March 2022
Official Publication:https://doi.org/10.1038/s41598-022-08846-1
PubMed:View item in PubMed

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