Embryonic neurogenesis in echinoderms

Wiley Interdisciplinary Reviews. Developmental Biology
Veronica F Hinman, R D Burke

Abstract

The phylogenetic position of echinoderms is well suited to revealing shared features of deuterostomes that distinguish them from other bilaterians. Although echinoderm neurobiology remains understudied, genomic resources, molecular methods, and systems approaches have enabled progress in understanding mechanisms of embryonic neurogenesis. Even though the morphology of echinoderm larvae is diverse, larval nervous systems, which arise during gastrulation, have numerous similarities in their organization. Diverse neural subtypes and specialized sensory neurons have been identified and details of neuroanatomy using neuron-specific labels provide hypotheses for neural function. The early patterning of ectoderm and specification of axes has been well studied in several species and underlying gene regulatory networks have been established. The cells giving rise to central and peripheral neural components have been identified in urchins and sea stars. Neurogenesis includes typical metazoan features of asymmetric division of neural progenitors and in some cases limited proliferation of neural precursors. Delta/Notch signaling has been identified as having critical roles in regulating neural patterning and differentiation. Several transc...Continue Reading

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May 13, 2020·PloS One·Vladimir MashanovDaniel Janies
Jun 22, 2019·Cell and Tissue Research·José E García-ArrarásSunny Qi-Huang
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May 29, 2021·Integrative and Comparative Biology·Hugh F CarterPaola Oliveri
Jul 28, 2021·Journal of Cell Science·Odile BronchainBrigitte Ciapa

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