Embryonic expression of a haematopoietic growth factor encoded by the Sl locus and the ligand for c-kit.

Journal Article (Journal Article)

Mice carrying mutations at the W (Dominant white spotting) and Sl (Steel) loci develop abnormalities in three independent systems: neural crest-derived melanocytes, primordial germ cells and haematopoietic stem cells. Consequently, homozygotes of viable mutant alleles have white coats and are sterile and severely anaemic. Tissue recombination studies predict that the W gene is expressed cell autonomously, whereas the product of the Sl locus affects the microenvironment in which the stem cells migrate, proliferate and differentiate. The W locus encodes the protoncogene c-kit, a member of the tyrosine kinase receptor family. The haematopoietic growth factor SCF (stem cell factor) has been identified as the product of the Sl locus and a ligand for c-kit. Here, we report that SCF is expressed during embryogenesis in cells associated with both the migratory pathways and homing sites of melanoblasts, germ cells and haematopoietic stem cells. Both SCF and c-kit are also expressed in a variety of other tissues, including the brain and spinal cord, suggesting that the receptor-ligand system has additional roles in embryogenesis.

Full Text

Duke Authors

Cited Authors

  • Matsui, Y; Zsebo, KM; Hogan, BL

Published Date

  • October 18, 1990

Published In

Volume / Issue

  • 347 / 6294

Start / End Page

  • 667 - 669

PubMed ID

  • 1699134

International Standard Serial Number (ISSN)

  • 0028-0836

Digital Object Identifier (DOI)

  • 10.1038/347667a0


  • eng

Conference Location

  • England