ZFIN ID: ZDB-PUB-190621-11
Fibroblast growth factor signaling mediates progenitor cell aggregation and nephron regeneration in the adult zebrafish kidney
Gallegos, T.F., Kamei, C.N., Rohly, M., Drummond, I.A.
Date: 2019
Source: Developmental Biology   454(1): 44-51 (Journal)
Registered Authors: Drummond, Iain
Keywords: Adult kidney stem cell, Fibroblast growth factor, Kidney, Nephron, Regeneration
MeSH Terms:
  • Adult Stem Cells/metabolism
  • Animals
  • Cell Aggregation/physiology
  • Fibroblast Growth Factors/metabolism*
  • Kidney/cytology
  • Kidney/metabolism
  • Nephrons/metabolism*
  • Organogenesis
  • Receptor, Fibroblast Growth Factor, Type 1/metabolism
  • Regeneration/physiology
  • Signal Transduction/physiology
  • Stem Cells/cytology*
  • Stem Cells/metabolism
  • Zebrafish/metabolism
  • Zebrafish Proteins/metabolism
PubMed: 31220433 Full text @ Dev. Biol.
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ABSTRACT
The zebrafish kidney regenerates after injury by development of new nephrons from resident adult kidney stem cells. Although adult kidney progenitor cells have been characterized by transplantation and single cell RNA seq, signals that stimulate new nephron formation are not known. Here we demonstrate that fibroblast growth factors and FGF signaling is rapidly induced after kidney injury and that FGF signaling is required for recruitment of progenitor cells to sites of new nephron formation. Chemical or dominant negative blockade of Fgfr1 prevented formation of nephron progenitor cell aggregates after injury and during kidney development. Implantation of FGF soaked beads induced local aggregation of lhx1a:EGFP  + kidney progenitor cells. Our results reveal a previously unexplored role for FGF signaling in recruitment of renal progenitors to sites of new nephron formation and suggest a role for FGF signaling in maintaining cell adhesion and cell polarity in newly forming kidney epithelia.
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