Format

Send to

Choose Destination
See comment in PubMed Commons below
Curr Biol. 2004 Feb 3;14(3):225-30.

Heparan sulfate proteoglycan syndecan promotes axonal and myotube guidance by slit/robo signaling.

Author information

1
Abteilung Molekulare Entwicklungsbiologie, Max-Planck-Institut für biophysikalische Chemie, Am Fassberg 11, 37077 Goettingen, Germany.

Abstract

Slit, the ligand for the Roundabout (Robo) receptors, is secreted from midline cells of the Drosophila central nervous system (CNS). It acts as a short-range repellent that controls midline crossing of axons and allows growth cones to select specific pathways along each side of the midline. In addition, Slit directs the migration of muscle precursors and ventral branches of the tracheal system, showing that it provides long-range activity beyond the limit of the developing CNS. Biochemical studies suggest that guidance activity requires cell-surface heparan sulfate to promote binding of mammalian Slit/Robo homologs. Here, we report that the Drosophila homolog of Syndecan (reviewed in ), a heparan sulfate proteoglycan (HSPG), is required for proper Slit signaling. We generated syndecan (sdc) mutations and show that they affect all aspects of Slit activity and cause robo-like phenotypes. sdc interacts genetically with robo and slit, and double mutations cause a synergistic strengthening of the single-mutant phenotypes. The results suggest that Syndecan is a necessary component of Slit/Robo signaling and is required in the Slit target cells.

PMID:
14761655
DOI:
10.1016/j.cub.2004.01.006
[Indexed for MEDLINE]
Free full text
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for Elsevier Science
    Loading ...
    Support Center