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Early neural cell death: an overlooked process in neural development

Authors: De la Rosa, Enrique J.; Gómez-Vicente, Violeta; Valenciano, Ana I.; Boya, Patricia; Pablo, Flora de;

Early neural cell death: an overlooked process in neural development

Abstract

[ES]Durante el desarrollo del sistema nervioso de vertebrados, múltiples procesos fisiológicos participan en la generación de su compleja arquitectura celular y funcionalidad. Entre ellos, la muerte celular programada que afecta a neuronas de conexión está reconocido como un proceso fundamental. Por otro lado, hay escasa información disponible acerca de la muerte celular que afecta a células neuroepiteliales y a neuronas y glía recién nacidas, lo que impide que tengamos una noción completa sobre el desarrollo neural. Los estudios de nuestro laboratorio han demostrado que la muerte celular programada se encuentra finamente regulada y ocurre en etapas tan tempranas del desarrollo como la neurulación o la neurogénesis. Hemos caracterizado el papel que moléculas de supervivencia, como la proinsulina/insulina, c-Raf o HSC70, desempeñan bloqueando la apoptosis dependiente de caspasas, proceso que afecta a células neuroepiteliales proliferativas, así como a la generación de las células ganglionares de la retina. Es más, la caracterización de estas señales fisiológicas originadas durante la neurogénesis de la retina nos ha proporcionado una nueva herramienta terapéutica potencial para el tratamiento y atenuación de las neurodegeneraciones retinianas.

[EN]During the development of the vertebrate nervous system, multiple physiological processes are involved in the generation of its complex cytoarchitecture and functionality. Among them, programmed cell death has been recognized as a key process that affects connecting neurons. By contrast, there is limited information available regarding the cell death that affects neuroepithelial cells, and recently born neurons and glia, hindering the comprehensive understanding of neural development. We have demonstrated that exquisitely regulated PCD occurs during early stages of neural development such as neurulation and neurogenesis. We have characterized how survival signals from proteins like proinsulin/insulin, c-Raf, and HSC70 counteract caspase-dependent apoptosis, which affects neuroepithelial cells proliferation and the generation of retinal ganglion cells. Furthermore, the characterization of these physiological signals during retinal neurogenesis has the potential to provide new therapeutic tools to attenuate retinal neurodegeneration.

Research in the laboratory is funded by grants-in-aid from the Spanish Ministerio de Educación y Ciencia (SAF2007-66175-C02-01 to EJdlR, BFU2007-61055/BMC to FdP, and BFU2006-00508 to PB).

Peer reviewed

15 p.-7 fig.

Keywords

Neurogénesis, Diferenciación, HSC70, Proinsulina, Neurogenesis, Neuroprotección, Proliferation, Apoptosis, Retina, Neuroprotection, Proliferación, Neurodegeneración, c-Raf, Muerte celular programada, Differentiation, Caspases, Insulina, Insulin, Caspasas, Neurodegeneration, Neurulación, Neurulation, Programmed cell death, Proinsulin

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
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