The lncRNA Sweetheart regulates compensatory cardiac hypertrophy after myocardial injury in murine males.

ABSTRACT: After myocardial infarction in the adult heart the remaining, non-infarcted tissue adapts to compensate the loss of functional tissue. This adaptation requires changes in gene expression networks, which are mostly controlled by transcription regulating proteins. Long non-coding transcripts (lncRNAs) are taking part in fine-tuning such gene programs. We describe and characterize the cardiomyocyte specific lncRNA Sweetheart RNA (Swhtr), an approximately 10 kb long transcript divergently expressed from the cardiac core transcription factor coding gene Nkx2-5. We show that Swhtr is dispensable for normal heart development and function but becomes essential for the tissue adaptation process after myocardial infarction in murine males. Re-expressing Swhtr from an exogenous locus rescues the Swht

SUBMITTER: Rogala S 

PROVIDER: S-EPMC10622434 | biostudies-literature | 2023 Nov

REPOSITORIES: biostudies-literature