Work

Two Critical Periods of Sonic Hedgehog Signaling Required for the Specification of Motor Neuron Identity

Year: 1996

Type: article

Abstract: Antibodies that block Sonic Hedgehog (SHH) signaling have been used to show that SHH activity is required for the induction of floor plate differentiation by the notochord and independently for the induction of motor neurons by both the notochord and midline neural cells. Motor neuron generation depends on two critical periods of SHH signaling: an early period during which naive neural plate cells are converted into ventralized progenitors and a late period that extends well into S phase of the final progenitor cell division, during which SHH drives the differentiation of ventralized progenitors into motor neurons. The ambient SHH concentration during the late period determines whether ventralized progenitors differentiate into motor neurons or interneurons, thus defining the pattern of neuronal cell types generated in the neural tube.

Source: Cell

DOI: 10.1016/s0092-8674(00)81386-0

Authors: Johan Ericson, Susan Morton, Atsushi Kawakami, Henk Roelink, Thomas M Jessell

Institutions: Howard Hughes Medical Institute, Columbia University, Nagoya University, University of Washington

Language: English

Topic: Hedgehog Signaling Pathway Studies

Subfield: Molecular Biology

Field: Biochemistry, Genetics and Molecular Biology

Domain: Life Sciences

Open Access status: hybrid

Estimated APC paid: $11,400