Patterns & Phenotypes
Enhancer detection and developmental expression of zebrafish sprouty1, a member of the fgf8 synexpression group
Article first published online: 26 AUG 2008
Copyright © 2008 Wiley-Liss, Inc.
Volume 237, Issue 9, pages 2594–2603, September 2008
How to Cite
Komisarczuk, A. Z., Topp, S., Stigloher, C., Kapsimali, M., Bally-Cuif, L. and Becker, T. S. (2008), Enhancer detection and developmental expression of zebrafish sprouty1, a member of the fgf8 synexpression group. Dev. Dyn., 237: 2594–2603. doi: 10.1002/dvdy.21689
- Issue published online: 26 AUG 2008
- Article first published online: 26 AUG 2008
- Manuscript Accepted: 7 JUL 2008
- European Commission. Grant Number: LSHG-CT-2003-503469
- rhombomere centers;
- radical fringe;
- optic nerve astrocytes;
- cranial ganglia;
Signaling pathways mediated by receptor tyrosine kinases (RTKs) are under positive and negative regulation, and misregulation of RTK signaling results in developmental defects and malignancy. A major class of antagonists of Fgf and Egf signaling are the Sprouty proteins. Through an enhancer detection approach, we isolated the sprouty1 (spry1) gene, expressed in multiple developing organs during embryogenesis. We analyzed expression of spry1 between tail bud stage and 10 days postfertilization. From the tail bud stage on, transcript and reporter are detected in the craniofacial region and in the mid–hindbrain boundary, where expression persists until adulthood. Further expression domains are the telencephalon, hindbrain, dorsal diencephalon and epiphysis, branchial arches, pituitary, and the tubular gill epithelium. In the trunk spry1 is also prominently expressed in pronephros, the lateral line and tail fin. Sprouty1 acts in Fgf signaling downstream of Fgfr1, as its expression is abrogated through the small molecule inhibitor of this receptor, SU5402. Developmental Dynamics 237:2594–2603, 2008. © 2008 Wiley-Liss, Inc.