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Lineage Tracing Identifies Dynamic Contribution of Endothelial Cells to Cardiac Valve Mesenchyme During Development

Xiaojie Yang1, Furong Lu1

  • 1College of Life Sciences and Technology, Jinan University, Guangzhou, China.

The Journal of Histochemistry and Cytochemistry : Official Journal of the Histochemistry Society
|November 1, 2023
PubMed

Insights

Understanding heart valve development is key to treating congenital heart disease. This study traces endothelial cells, revealing their dynamic contribution to valve layers during development, crucial for understanding valve remodeling.

Area of Science:

  • Cardiovascular Biology
  • Developmental Biology
  • Genetics

Background:

  • Heart valve disease contributes significantly to global morbidity and mortality.
  • The precise pathogenesis of heart valve disease remains unclear, with emerging evidence pointing to genetic and developmental origins.
  • Understanding heart valve development is critical for diagnosing, preventing, and treating congenital heart disease.

Purpose of the Study:

  • To investigate the dynamic contribution of endocardial cushion-derived endothelial cells to heart valve layers during development.
  • To elucidate the cellular dynamics within the heart valve mesenchymal population.
  • To enhance understanding of endocardial cell roles in valve remodeling.

Main Methods:

  • Utilized the Cdh5-CreER;R26R-tdTomato mouse line for lineage tracing.
  • Tracked endocardial cushion-derived endothelial cells throughout valve development.
  • Analyzed the cellular contribution to different valve layers.

Main Results:

  • Successfully traced the contribution of endocardial cells to specific valve layers.
  • Visualized the dynamic changes in cell localization and proportion within the valve mesenchyme.
  • Provided insights into the developmental trajectory of endothelial cells in valve formation.

Conclusions:

  • Endocardial cells play a dynamic and crucial role in heart valve development and remodeling.
  • Lineage tracing provides a precise method for understanding cellular contributions to valve formation.
  • Further research into these developmental mechanisms can inform therapeutic strategies for heart valve diseases.

Keywords:
developmental originendothelial to mesenchymal transitionheart valvelineage tracing

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