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Sema4C Is Required for Vascular and Primary Motor Neuronal Patterning in Zebrafish
Jiajing Sheng1,2, Boxuan Jiang1, Ruijun Shi1
1Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education, Co-Innovation Center of Neuroregeneration, Second Affiliated Hospital, School of Life Science, Nantong University, Nantong 226001, China.
Cells
|August 26, 2022
Summary
Semaphorin4C (sema4C) is a crucial protein guiding both vascular and neural development. This study shows sema4C knockdown disrupts zebrafish embryo development, while its overexpression corrects these defects.
Area of Science:
- Developmental Biology
- Neuroscience
- Vascular Biology
Background:
- Endothelial cells and neurons share signaling pathways for development.
- Functional coupling between vascular and neuronal pathfinding is under-researched.
- Semaphorin4C (sema4C), a class 4 semaphorin, is known for its role in nervous system development.
Purpose of the Study:
- To investigate the role of semaphorin4C (sema4C) in vascular and neural development in zebrafish embryos.
- To elucidate the molecular mechanisms underlying the functional coupling between vascular and neuronal systems.
Main Methods:
- Zebrafish embryo model.
- Expression analysis to confirm sema4C localization.
- Knockdown of sema4C using morpholino injections.
- Overexpression of sema4C mRNA in morphants.
Main Results:
- Zebrafish sema4C is expressed in both the nervous system and intersegmental vessels (ISVs).
- Knockdown of sema4C resulted in significant pathfinding anomalies in ISVs and primary motor neurons (PMNs).
- Overexpression of sema4C in knockdown embryos rescued the observed vascular and neural developmental defects.
Conclusions:
- Semaphorin4C (sema4C) functions as a dual guiding factor for both vascular and neuronal development.
- This study reveals a novel molecular mechanism for blood vessel and nerve development.
- Findings provide a foundation for future research on the interplay between vascular and neural systems.
