Objective
Understanding mechanisms underlying cardiomyocyte (CM) transcriptional regulation is critical for deciphering molecular origins of cardiac malformations. Epigenetics is crucial for stabilizing transcriptional programs, but little is known about the “epigenetic code” of histone methylation during cardiogenesis, and in particular the role of histone methylation at lysine 79 (H3K79me) during heart development. DOT1L is the sole enzyme that catalyzes methylation at H3K79. Different degrees of H3K79me lead to distinct transcriptional readouts (gene activation, repression, or no changes of transcription) in a context dependent manner. H3K79me fluctuates during development, with Dot1L expression being high in heart. My initial studies in mouse embryonic stem cell-derived CMs suggested that DOT1L is required at early stages of cardiogenesis. ChIP-seq results from neonatal and adult CMs show H3K79me2 enriched in genes encoding CM structural proteins and cell cycle regulators. The foregoing suggest a critical role in heart development, but the role of DOT1L and the specific functions of H3K79me during early CM development in vivo have not yet been studied. My preliminary data showed that early CM specific cKO of Dot1L, driven by xMLC2cre, results in lethality at P2, with a phenotype exhibiting increased CM proliferation, demonstrating an essential role for DOT1L in cardiogenesis and CM cell cycle regulation. My hypothesis is that DOT1L plays a key role in heart development, defining a H3K79 dependent epigenetic landscape essential for cardiogenesis and CM cell cycle regulation. To test this hypothesis, my Aims are: 1)To investigate effects of early CM-specific deletion of Dot1L on cardiac morphogenesis and CM cell biology 2)To identify genes directly regulated, by DOT1L mediated-H3K79me in vivo. Completion of these aims will define mechanisms by which DOT1L is required for cardiogenesis and cell cycle regulation, helping to design new therapies for congenital heart disease.
Fields of science (EuroSciVoc)
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
- medical and health sciences clinical medicine cardiology paediatric cardiology
- natural sciences biological sciences cell biology
- natural sciences biological sciences biochemistry biomolecules proteins enzymes
- natural sciences biological sciences genetics epigenetics
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Programme(s)
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Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Topic(s)
Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Call for proposal
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Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
FP7-PEOPLE-2013-IOF
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Funding Scheme
Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
Coordinator
00185 Roma
Italy
The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.