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Nuclear Lamins in Cardiac Development and Disease.
Siqi Li1,2,3, Rui Li1,2,3,4,5, Chun Liu3,6,7
1Department of Pediatrics, Medical College of Wisconsin, Milwaukee, WI 53226, USA.
Cells
|May 13, 2026
Summary
Nuclear lamins (structural proteins) are crucial for heart development, regulating cardiomyocyte proliferation and maturation. Disruptions in lamins contribute to heart disease and aging.
Area of Science:
- Cell Biology
- Developmental Biology
- Cardiovascular Science
Background:
- Nuclear lamins are key structural and regulatory components of the nucleus.
- During heart development, lamin composition shifts, impacting cardiomyocyte proliferation and maturation.
- Lamins are implicated in nuclear mechanics, chromatin organization, and genome regulation.
Purpose of the Study:
- To review the developmental roles of B-type and A-type lamins in cardiac cells.
- To discuss how lamins regulate nuclear architecture, chromatin, and cell signaling in the heart.
- To explore the link between lamin dysfunction and cardiovascular diseases, aging, and regenerative capacity.
Main Methods:
- Literature review of studies on nuclear lamins in cardiac development and disease.
- Analysis of the mechanistic pathways involving lamins in cardiomyocyte function.
- Synthesis of findings on laminopathies and their cardiovascular manifestations.
Main Results:
- B-type lamins promote early cardiomyocyte plasticity and proliferation.
- Lamin A/C stabilizes nuclear architecture and transcription in mature cardiomyocytes.
- Lamins coordinate cardiomyocyte proliferation, maturation, and adaptation to mechanical stress.
Conclusions:
- Nuclear lamins are essential regulators of heart development and function.
- Dysfunctional lamin networks contribute to cardiomyopathy, cardiac aging, and reduced regenerative potential.
- Understanding lamin roles is critical for addressing cardiovascular diseases and aging.
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