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Imaging and 3D Reconstruction of Cerebrovascular Structures in Embryonic Zebrafish
Published on: April 22, 2014
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Venous-derived angioblasts generate organ-specific vessels during zebrafish embryonic development
Gideon Hen1, Julian Nicenboim1, Oded Mayseless1
1Department of Biological Regulation, Weizmann Institute of Science, Rehovot 76100, Israel.
Development (Cambridge, England)
|November 4, 2015
Summary
Specialized angioblasts from the posterior cardinal vein (PCV) form the zebrafish subintestinal plexus. These cells migrate and differentiate in two phases, establishing organ-specific vascular beds.
Area of Science:
- Developmental biology
- Vascular biology
- Zebrafish embryogenesis
Background:
- Vascular bed formation is complex, involving multiple signaling pathways.
- Embryonic origins and molecular mechanisms of tissue-specific vessel development are poorly understood.
- The zebrafish subintestinal plexus is an ideal model for studying organ-specific vessel formation.
Purpose of the Study:
- To investigate the embryonic origins of the zebrafish subintestinal plexus.
- To elucidate the molecular mechanisms regulating the formation of tissue-specific vessels.
- To understand the contribution of posterior cardinal vein (PCV) angioblasts to vascular development.
Main Methods:
- Live imaging of zebrafish embryos.
- Utilizing photoconvertable transgenic reporters.
- Analyzing cell migration and differentiation patterns.
Main Results:
- Subintestinal plexus arteries and veins originate from specialized angioblasts in the PCV floor.
- Angioblasts undergo two phases of migration and differentiation.
- Bone Morphogenetic Protein (BMP) signaling regulates collective vein migration; Vascular Endothelial Growth Factor (VEGF) influences arterial development.
Conclusions:
- The zebrafish subintestinal plexus is a valuable model for studying organ-specific vascular development.
- PCV-specialized angioblasts contribute to both early trunk vasculature and late-forming, tissue-specific vascular beds.
- Identified key signaling pathways (BMP, VEGF) in subintestinal plexus formation.
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