Sonic hedgehog: A mediator of inductive signaling in the neural ventral tube

被引：5

作者：

Roelink, H

Tanabe, Y

Jessell, TM

机构：

[1] Howard Hughes Medical Institute, Dept. Biochem. and Molec. Biophys., Columbia University, New York, NY 10032

来源：

SEMINARS IN CELL & DEVELOPMENTAL BIOLOGY | 1996年 / 7卷 / 01期

关键词：

chick embryo; induction; notochord; neural development; rat embryo; sonic hedgehog;

D O I：

10.1006/scdb.1996.0017

中图分类号：

Q2 [细胞生物学];

学科分类号：

071009 ; 090102 ;

摘要：

The differentiation of distinct cell types in the ventral neural tube can be induced by Sonic Hedgehog (SHH) a signaling molecule expressed by the notochord. SHH undergoes autoproteolytic cleavage to generate amino- and carboxy terminal products. Floor plate and motor neurons can be induced by the amino-terminal cleavage product of SHH (SHH-N). The threshold concentration for induction of floor plate cells in neural plate explants is about 5-fold higher than that required to induce motor neurons, suggesting that the induction of distinct ventral cell types by the notochord in vivo is mediated by exposure of neural plate cells to different concentrations of SHH-N.

引用

页码：121 / 127

页数：7

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