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Expression of Vema in the developing mouse spinal cord and optic chiasm
1Department of Neuroscience, Albert Einstein College of Medicine, Bronx, New York 10461, USA.
The Journal of Comparative Neurology
|September 5, 2002
Summary
Vema, a novel protein, is expressed at key midline locations in the developing vertebrate central nervous system (CNS). Its expression suggests a role in guiding axons during nervous system development.
Area of Science:
- Neuroscience
- Developmental Biology
- Molecular Biology
Background:
- Axon pathfinding is crucial for nervous system development.
- Intermediate targets provide guidance cues for growing axons.
- Vema is a newly identified membrane-associated protein in the developing CNS.
Purpose of the Study:
- To investigate the expression pattern of Vema in the developing mouse central nervous system.
- To determine the potential role of Vema in axon guidance.
Main Methods:
- Immunohistochemistry to detect Vema expression.
- Analysis of Vema distribution in the developing spinal cord and optic chiasm.
Main Results:
- Vema is expressed in the floor plate, an intermediate target for commissural axons.
- Vema expression overlaps with intermediate targets for retinal ganglion cell axons in the ventral diencephalon.
- Vema's distribution pattern resembles known axon guidance molecules like Robo2 and Neuropilin2.
Conclusions:
- Vema is expressed at critical choice points for pathfinding axons in the developing CNS.
- Vema likely plays a significant role in regulating axon guidance at the midline.