Unknown,Transcriptomics,Genomics,Proteomics

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Gene expression profiles of mouse embryonic fibroblasts (MEFs), induced cardiomyocytes (iCMs) and heart

ABSTRACT: Global gene expression patterns of the iCMs shift from a MEF state toward a cardiac-like phenotype by Gata4/Mef2c/Tbx5 (GMT) or GMT/miR-133 transduction at 3, 7 and 18 days after transduction (D3, D7 and D18) MiR-133 silenced fibroblast signatures in parallel with cardiac gene activation, and Snai1 overexpression inhibited the effects of miR-133-mediated cardiac reprogramming. MEFs were used for negative control, mouse heart tissue for positive control. Gene expression profiles were compared among MEFs, iCMs and heart. 23474 probes were analyzed in each experiment.

ORGANISM(S): Mus musculus

SUBMITTER: Satoshi Kondo 

PROVIDER: E-GEOD-56875 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Fibroblasts can be directly reprogrammed into cardiomyocyte-like cells (iCMs) by overexpression of cardiac transcription factors or microRNAs. However, induction of functional cardiomyocytes is inefficient, and molecular mechanisms of direct reprogramming remain undefined. Here, we demonstrate that addition of miR-133a (miR-133) to Gata4, Mef2c, and Tbx5 (GMT) or GMT plus Mesp1 and Myocd improved cardiac reprogramming from mouse or human fibroblasts by directly repressing Snai1, a master regulat  ...[more]

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