Inhibition of neuroepithelial patched-induced apoptosis by sonic hedgehog.
Science
; 301(5634): 843-6, 2003 Aug 08.
Article
en En
| MEDLINE
| ID: mdl-12907805
During early development in vertebrates, Sonic hedgehog (Shh) is produced by the notochord and the floor plate. A ventrodorsal gradient of Shh directs ventrodorsal patterning of the neural tube. However, Shh is also required for the survival of neuroepithelial cells. We show that Patched (Ptc) induces apoptotic cell death unless its ligand Shh is present to block the signal. Moreover, the blockade of Ptc-induced cell death partly rescues the chick spinal cord defect provoked by Shh deprivation. Thus, the proapoptotic activity of unbound Ptc and the positive effect of Shh-bound Ptc on cell differentiation probably cooperate to achieve the appropriate spinal cord development.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Transactivadores
/
Sistema Nervioso Central
/
Apoptosis
/
Proteínas de la Membrana
Límite:
Animals
/
Humans
Idioma:
En
Revista:
Science
Año:
2003
Tipo del documento:
Article
País de afiliación:
Francia
Pais de publicación:
Estados Unidos