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Ucar, Ahmet; Gupta, Shashi K; Fiedler, Jan; Erikci, Erdem; Kardasinski, Michal; Batkai, Sandor; Dangwal, Seema; Kumarswamy, Regalla; Bang, Claudia; Holzmann, Angelika; Remke, Janet; Caprio, Massimiliano; Jentzsch, Claudia; Engelhardt, Stefan; Geisendorf, Sabine; Glas, Carolina; Hofmann, Thomas G; Nessling, Michelle; Richter, Karsten; Schiffer, Mario; Carrier, Lucie; Napp, L Christian; Bauersachs, Johann; Chowdhury, Kamal; Thum, Thomas
Nature communications, 09/2012, Letnik: 3, Številka: 1Journal Article
Pathological growth of cardiomyocytes (hypertrophy) is a major determinant for the development of heart failure, one of the leading medical causes of mortality worldwide. Here we show that the microRNA (miRNA)-212/132 family regulates cardiac hypertrophy and autophagy in cardiomyocytes. Hypertrophic stimuli upregulate cardiomyocyte expression of miR-212 and miR-132, which are both necessary and sufficient to drive the hypertrophic growth of cardiomyocytes. MiR-212/132 null mice are protected from pressure-overload-induced heart failure, whereas cardiomyocyte-specific overexpression of the miR-212/132 family leads to pathological cardiac hypertrophy, heart failure and death in mice. Both miR-212 and miR-132 directly target the anti-hypertrophic and pro-autophagic FoxO3 transcription factor and overexpression of these miRNAs leads to hyperactivation of pro-hypertrophic calcineurin/NFAT signalling and an impaired autophagic response upon starvation. Pharmacological inhibition of miR-132 by antagomir injection rescues cardiac hypertrophy and heart failure in mice, offering a possible therapeutic approach for cardiac failure.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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Vir: Osebne bibliografije
in: SICRIS
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