NOTCH, a new signaling pathway implicated in holoprosencephaly.

Abstract:

:Genetics of Holoprosencephaly (HPE), a congenital malformation of the developing human forebrain, is due to multiple genetic defects. Most genes that have been implicated in HPE belong to the sonic hedgehog signaling pathway. Here we describe a new candidate gene isolated from array comparative genomic hybridization redundant 6qter deletions, DELTA Like 1 (DLL1), which is a ligand of NOTCH. We show that DLL1 is co-expressed in the developing chick forebrain with Fgf8. By treating chick embryos with a pharmacological inhibitor, we demonstrate that DLL1 interacts with FGF signaling pathway. Moreover, a mutation analysis of DLL1 in HPE patients revealed a three-nucleotide deletion. These various findings implicate DLL1 in early patterning of the forebrain and identify NOTCH as a new signaling pathway involved in HPE.

journal_name

Hum Mol Genet

journal_title

Human molecular genetics

authors

Dupé V,Rochard L,Mercier S,Le Pétillon Y,Gicquel I,Bendavid C,Bourrouillou G,Kini U,Thauvin-Robinet C,Bohan TP,Odent S,Dubourg C,David V

doi

10.1093/hmg/ddq556

subject

Has Abstract

pub_date

2011-03-15 00:00:00

pages

1122-31

issue

6

eissn

0964-6906

issn

1460-2083

pii

ddq556

journal_volume

20

pub_type

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