PUBLICATION

Sonic Hedgehog Signalling in the Developing and Regenerating Fins of Zebrafish

Authors
Avaron, F., Smith, A., and Akimenko, M.A.
ID
ZDB-PUB-081124-2
Date
2008
Source
Molecular Biology Intelligence Unit : 93-106 (Chapter)
Registered Authors
Akimenko, Marie-Andree, Avaron, Fabien
Keywords
none
MeSH Terms
none
PubMed
none Full text @ Mol. Biol. Int. Unit
Abstract
Zebrafish is now a well established model for the study of developmental and regenerative processes. Indeed, the genetic cascades that control the early development of the structure that will form the paired fins (the fin bud) present similarities with the early formation of the tetrapod fore and hindlimb buds. One of these conserved molecular pathways involves secreted factors of the Hedgehog family [sonic hedgehog (shh) and tiggywinkle hedgehog (twhh)]. As in the tetrapod limbs, hedgehog proteins are initially expressed in the posterior region of the early fin bud where they contribute to the patterning of the antero-posterior axis, then are involved in cell proliferation and the formation of various skeletal elements. The hedgehog pathway is reactivated in adult fish following fin amputation, an event that triggers the regeneration program. During this process, the hedgehog signal is involved in various processes such as the growth and maintenance of the blastema and patterning of the fin ray.
Genes / Markers
Figures
Expression
Phenotype
Mutations / Transgenics
Human Disease / Model
Sequence Targeting Reagents
Fish
Antibodies
Orthology
Engineered Foreign Genes
Mapping