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AAV9 mediated overexpression of Rbm24 in wildtype C57/Bl6 mice

ABSTRACT: AAV9 mediated overexpression of Rbm24 in wildtype C57/Bl6 mice

PROVIDER: PRJNA435510 | ENA |

REPOSITORIES: ENA

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AAV9 mediated overexpression of Rbm24 in wildtype C57/Bl6 mice

Project description:The RNA-binding protein Rbm24 has recently been identified as a pivotal splicing factor in the developing heart. Loss of Rbm24 in mice disrupts cardiac development by governing a large number of muscle- specific splicing events. Since Rbm24 knockout mice are embryonically lethal, the role of Rbm24 in the adult heart remained unexplored. Here, we used adeno-associated viruses (AAV9) to investigate the effect of increased Rbm24 levels in adult mouse heart. Using high-resolution microarrays, we found 893 differentially expressed genes and 1102 differential splicing events in 714 genes in hearts overexpressing Rbm24. We found splicing differences in cardiac genes, such as PDZ and Lim domain 5, Phospholamban, and Titin, but did not find splicing differences in previously identified embryonic splicing targets of Rbm24, such as skNAC, αNAC, and Coro6. Gene ontology enrichment analysis demonstrated increased expression of extracellular matrix (ECM)-related and immune response genes. Moreover, we found increased expression of Tgfβ-signaling genes, suggesting enhanced Tgfβ-signaling in these hearts. Ultimately, this increased activation of cardiac fibroblasts, as evidenced by robust expression of Periostin in the heart, and extensive cardiac fibrosis. These results indicate that Rbm24 may function as a regulator of cardiac fibrosis, potentially through the regulation of TgfβR1 and TgfβR2 expression.

2018-07-16 | GSE110991 | GEO

Mus musculus strain:C57/BL6

Project description:Mus musculus strain:C57/BL6

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Mus musculus strain:C57/Bl6

Project description:Mus musculus strain:C57/Bl6 Variation

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Mus musculus breed:C57/BL6

Project description:Mus musculus breed:C57/BL6 Epigenomics

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Mus musculus strain:C57/Bl6

Project description:Mus musculus strain:C57/Bl6 Raw sequence reads