The open and closed case for Class I HDACs in cardiac development
Drishti Rajesth1, Veronica Uribe1, Kelly A Smith1
1Department of Physiology, The University of Melbourne, Parkville, VIC 3010, Australia.
Seminars in Cell & Developmental Biology
|June 10, 2025
Summary
Class I histone deacetylases (HDACs) are crucial epigenetic regulators in heart development. This review summarizes their function in cardiac specification, differentiation, and morphogenesis, highlighting areas needing further research.
Area of Science:
- Epigenetics
- Molecular Biology
- Developmental Biology
Background:
- Gene expression during cardiac development relies on epigenetic mechanisms.
- Histone deacetylases (HDACs) remove histone acetylation, leading to gene repression.
- Class I HDACs (HDACs 1-3) are key epigenetic regulators in the heart.
Purpose of the Study:
- To review the function of Class I HDACs in cardiac development.
- To cover key stages: cardiac specification, differentiation, looping morphogenesis, and second heart field development.
- To discuss the role of Class I HDACs in non-cardiomyocyte heart populations.
Main Methods:
- Review of existing literature on Class I HDACs in cardiac development.
- Analysis of data from mouse knockout models.
- Inclusion of insights from in vitro stem cell models and zebrafish studies.
Main Results:
- Class I HDACs play significant roles in cardiac specification, differentiation, and morphogenesis.
- Specific molecular targets and binding partners of HDACs in cardiac development remain understudied.
- Class I HDACs are also important in non-cardiomyocyte cardiac cell types.
Conclusions:
- Class I HDACs are essential for multiple stages of cardiac development.
- Further research is needed to fully elucidate HDAC targets and functions in the heart.
- Understanding these epigenetic regulators is vital for addressing congenital heart defects.
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