CNKSR2, a downstream mediator of retinoic acid signaling, modulates the Ras/Raf/MEK pathway to regulate patterning and invagination of the chick forebrain roof plate.
Development
; 150(3)2023 02 15.
Article
em En
| MEDLINE
| ID: mdl-36734326
ABSTRACT
During embryonic development, the forebrain roof plate undergoes invagination, leading to separation of the cerebral hemispheres. Any defects in this process, in humans, lead to middle interhemispheric holoprosencephaly (MIH-HPE). In this study, we have identified a previously unreported downstream mediator of retinoic acid (RA) signaling, CNKSR2, which is expressed in the forebrain roof plate in the chick embryo. Knockdown of CNKSR2 affects invagination, cell proliferation and patterning of the roof plate, similar to the phenotypes observed upon inhibition of RA signaling. We further demonstrate that CNKSR2 functions by modulating the Ras/Raf/MEK signaling. This appears to be crucial for patterning of the forebrain roof plate and its subsequent invagination, leading to the formation of the cerebral hemispheres. Thus, a set of novel molecular players have been identified that regulate the morphogenesis of the avian forebrain.
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Texto completo:
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Base de dados:
MEDLINE
Assunto principal:
Tretinoína
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Holoprosencefalia
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Prosencéfalo
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Proteínas Adaptadoras de Transdução de Sinal
Idioma:
En
Ano de publicação:
2023
Tipo de documento:
Article
País de afiliação:
Índia