Corpus Callosum: Molecular Pathways in Mice and Human

Neuroimaging Clin. N. Am. · Aug 2019

Review

Corpus Callosum: Molecular Pathways in Mice and Human Dysgeneses.

The corpus callosum is the largest of the 3 telencephalic commissures in eutherian (placental) mammals. Although the anterior commissure, and the hippocampal commissure before being pushed dorsally by the expanding frontal lobes, cross through the lamina reuniens (upper part of the lamina terminalis), the callosal fibers need a transient interhemispheric cellular bridge to cross. This review describes the molecular pathways that initiate the specification of the cells comprising this bridge, the specification of the callosal neurons, and the repulsive and attractive guidance molecules that convey the callosal axons toward, across, and away from the midline to connect with their targets.

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- Charles Raybaud.
- 99 Harbour Square #1102, Toronto, Ontario M5J2H2, Canada. Electronic address: charles.raybaud@gmail.com.
- Neuroimaging Clin. N. Am. 2019 Aug 1; 29 (3): 445-459.
AbstractThe corpus callosum is the largest of the 3 telencephalic commissures in eutherian (placental) mammals. Although the anterior commissure, and the hippocampal commissure before being pushed dorsally by the expanding frontal lobes, cross through the lamina reuniens (upper part of the lamina terminalis), the callosal fibers need a transient interhemispheric cellular bridge to cross. This review describes the molecular pathways that initiate the specification of the cells comprising this bridge, the specification of the callosal neurons, and the repulsive and attractive guidance molecules that convey the callosal axons toward, across, and away from the midline to connect with their targets.Crown Copyright © 2019. Published by Elsevier Inc. All rights reserved.

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