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Imaging and 3D Reconstruction of Cerebrovascular Structures in Embryonic Zebrafish
Published on: April 22, 2014
Characterization of vascular mural cells during zebrafish development
Massimo M Santoro1, Gabriella Pesce, Didier Y Stainier
1Molecular Biotechnology Center, University of Torino, Via Nizza, 52, 10126 Torino, Italy. massimo.santoro@unito.it
Mechanisms of Development
|June 23, 2009
Summary
Zebrafish studies reveal mural cell (MC) origins in vascular development. These cells, crucial for blood vessel formation, arise from lateral plate mesoderm, not blood or endothelial cells.
Area of Science:
- Developmental Biology
- Cardiovascular Research
- Zebrafish Models
Background:
- Vascular myogenesis, the recruitment of mural cells (MCs) to form blood vessels, is essential for cardiovascular system development.
- Studying MC origins is challenging due to in vivo observation difficulties and limitations in genetic manipulation in traditional model organisms.
Purpose of the Study:
- To investigate the origin and developmental trajectory of vascular mural cells (MCs) using zebrafish as a model organism.
- To elucidate the cellular and genetic mechanisms underlying vascular myogenesis in the early cardiovascular system.
Main Methods:
- Utilized molecular and genetic tools in zebrafish embryos.
- Analyzed the localization and contribution of vascular MCs to major arterial structures.
- Performed genetic analyses to trace the lineage of vascular MCs.
Main Results:
- Identified vascular MCs surrounding the lateral dorsal aortae (LDA) and anterior mesenteric arteries (AMA), as well as in the cardiac outflow tract and ventral aorta (VA).
- Genetic data demonstrated that LDA and AMA vascular MCs originate from lateral plate mesoderm derivatives, distinct from blood or endothelial progenitors.
- Zebrafish vascular MCs exhibit conserved morphological, molecular, and functional traits similar to vascular smooth muscle cells and pericytes in higher vertebrates.
Conclusions:
- Zebrafish serve as a valuable model for studying vascular myogenesis due to conserved MC characteristics and genetic tractability.
- The findings provide critical insights into the non-hematopoietic, non-endothelial origin of vascular MCs from the lateral plate mesoderm.
- This research supports the utility of zebrafish for investigating vascular diseases, including tumor angiogenesis and other MC-associated pathologies.
