Author
Listed:
- Masaki Hiramoto
(Department of Developmental Genetics National Institute of Genetics
CREST fellow)
- Yasushi Hiromi
(Department of Developmental Genetics National Institute of Genetics
Graduate University for Advanced Studies)
- Edward Giniger
(Fred Hutchinson Cancer Research Center)
- Yoshiki Hotta
(Department of Developmental Genetics National Institute of Genetics
Graduate University for Advanced Studies
CREST Researcher of Japan Science and Technology Corporation)
Abstract
Netrin is a secreted protein that can act as a chemotropic axon guidance cue1,2. Two classes of Netrin receptor, DCC3,4,5 and UNC-5 (refs 6,7,8,9), are required for axon guidance3,4,6,7,8,9,10,11 and are thought to mediate Netrin signals in growth cones through their cytoplasmic domains12,13. However, in the guidance of Drosophila photoreceptor axons, the DCC orthologue Frazzled3 is required not in the photoreceptor neurons but instead in their targets, indicating that Frazzled also has a non-cell-autonomous function14. Here we show that Frazzled can capture Netrin and ‘present’ it for recognition by other receptors. Moreover, Frazzled itself is actively localized within the axon through its cytoplasmic domain, and thereby rearranges Netrin protein into a spatial pattern completely different from the pattern of Netrin gene expression. Frazzled-dependent guidance of one pioneer neuron in the central nervous system can be accounted for solely on the basis of this ability of Frazzled to control Netrin distribution, and not by Frazzled signalling. We propose a model of patterning mechanism in which a receptor rearranges secreted ligand molecules, thereby creating positional information for other receptors.
Suggested Citation
Masaki Hiramoto & Yasushi Hiromi & Edward Giniger & Yoshiki Hotta, 2000.
"The Drosophila Netrin receptor Frazzled guides axons by controlling Netrin distribution,"
Nature, Nature, vol. 406(6798), pages 886-889, August.
Handle:
RePEc:nat:nature:v:406:y:2000:i:6798:d:10.1038_35022571
DOI: 10.1038/35022571
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