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Smooth muscle stem cells.
Karen K Hirschi1, Mark W Majesky
1Center for Cell and Gene Therapy, Baylor College of Medicine, Houston, Texas, USA.
Summary
Vascular smooth muscle cells (SMCs) arise from diverse stem and progenitor cells during development and adulthood. Understanding these origins is key to vascular repair and maintaining vessel health.
Area of Science:
- Cardiovascular Biology
- Developmental Biology
- Stem Cell Research
Background:
- Vascular smooth muscle cells (SMCs) are crucial for arterial function and repair.
- Multiple progenitor cell types contribute to SMC development and maintenance.
Purpose of the Study:
- To review the origins of vascular SMCs from multipotential stem and progenitor cells.
- To explore SMC origins in both embryonic development and adult vasculature.
Main Methods:
- Literature review of developmental and stem cell biology research.
- Analysis of intrinsic and extrinsic factors influencing SMC differentiation.
- Synthesis of evidence regarding adult vascular progenitor sources.
Main Results:
- Cardiac neural crest stem cells are a primary embryonic SMC progenitor.
- Embryonic SMCs arise from proepicardial and endothelial progenitor cells.
- Adult SMCs are replenished by bone marrow-derived and tissue-resident progenitors.
Conclusions:
- Vascular SMCs have diverse origins throughout life.
- Understanding these origins informs strategies for vascular repair and regeneration.