PUBLICATION

Roles for Fgf signaling during zebrafish fin regeneration

Authors
Poss, K.D., Shen, J., Nechiporuk, A., McMahon, G., Thisse, B., Thisse, C., and Keating, M.T.
ID
ZDB-PUB-000623-7
Date
2000
Source
Developmental Biology   222(2): 347-358 (Journal)
Registered Authors
Keating, Mark T., Nechiporuk, Alex, Poss, Kenneth D., Shen, JiePan, Thisse, Bernard, Thisse, Christine
Keywords
zebrafish; regeneration; blastema; fibroblast growth factors; msx; sonic hedgehog
MeSH Terms
  • Amputation
  • Animals
  • Enzyme Inhibitors/pharmacology
  • Epidermis/physiology
  • Extremities/physiology*
  • Fibroblast Growth Factors/physiology*
  • Mesoderm/physiology
  • Pyrroles/pharmacology
  • Receptor Protein-Tyrosine Kinases/drug effects
  • Receptor Protein-Tyrosine Kinases/physiology*
  • Receptor, Fibroblast Growth Factor, Type 1
  • Receptors, Fibroblast Growth Factor/drug effects
  • Receptors, Fibroblast Growth Factor/physiology*
  • Regeneration/drug effects
  • Regeneration/physiology*
  • Signal Transduction
  • Zebrafish
PubMed
10837124 Full text @ Dev. Biol.
Abstract
Following amputation of a urodele limb or teleost fin, the formation of a blastema is a crucial step in facilitating subsequent regeneration. Using the zebrafish caudal fin regeneration model, we have examined the hypothesis that fibroblast growth factors (Fgfs) initiate blastema formation from fin mesenchyme. We find that fibroblast growth factor receptor 1 (fgfr1) is expressed in mesenchymal cells underlying the wound epidermis during blastema formation and in distal blastemal tissue during regenerative outgrowth. fgfr1 transcripts colocalize with those of msxb and msxc, putative markers for undifferentiated, proliferating cells. A zebrafish Fgf member, designated wfgf, is expressed in the regeneration epidermis during outgrowth. Furthermore, we show that a specific inhibitor of Fgfr1 applied immediately following fin amputation blocks blastema formation, without obvious effects on wound healing. This inhibitor blocks the proliferation of blastemal cells and the onset of msx gene transcription. Inhibition of Fgf signaling during ongoing fin regeneration prevents further outgrowth while downregulating the established expression of blastemal msx genes and epidermal sonic hedgehog. Our findings indicate that zebrafish fin blastema formation and regenerative outgrowth require Fgf signaling.
Genes / Markers
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Expression
Phenotype
Mutation and Transgenics
Human Disease / Model Data
Sequence Targeting Reagents
Fish
Antibodies
Orthology
Engineered Foreign Genes
Mapping
Errata and Notes