PUBLICATION

Wnt signaling mediates new nephron formation during zebrafish kidney regeneration

Authors
Kamei, C.N., Gallegos, T.F., Liu, Y., Hukriede, N., Drummond, I.A.
ID
ZDB-PUB-190501-3
Date
2019
Source
Development (Cambridge, England)   146(8): (Journal)
Registered Authors
Drummond, Iain, Hukriede, Neil, Liu, Yan
Keywords
Adult organ stem cell, Frizzled, Kidney, Nephron, Regeneration, Wnt
MeSH Terms
  • Regeneration/physiology
  • Frizzled Receptors/genetics
  • Frizzled Receptors/metabolism
  • Nephrons/cytology*
  • Nephrons/metabolism*
  • Zebrafish/metabolism
  • Wnt Signaling Pathway/genetics
  • Wnt Signaling Pathway/physiology*
  • Zebrafish Proteins/genetics
  • Zebrafish Proteins/metabolism
  • Animals
  • Kidney/cytology*
  • Kidney/metabolism*
(all 13)
PubMed
31036548 Full text @ Development
Abstract
Zebrafish kidneys use resident kidney stem cells to replace damaged tubules with new nephrons: the filtration units of the kidney. What stimulates kidney progenitor cells to form new nephrons is not known. Here, we show that wnt9a and wnt9b are induced in the injured kidney at sites where frizzled9b- and lef1-expressing progenitor cells form new nephrons. New nephron aggregates are patterned by Wnt signaling, with high canonical Wnt-signaling cells forming a single cell thick rosette that demarcates: domains of cell proliferation in the elongating nephron; and tubule fusion where the new nephron plumbs into the distal tubule and establishes blood filtrate drainage. Pharmacological blockade of canonical Wnt signaling inhibited new nephron formation after injury by inhibiting cell proliferation, and resulted in loss of polarized rosette structures in the aggregates. Mutation in frizzled9b reduced total kidney nephron number, caused defects in tubule morphology and reduced regeneration of new nephrons after injury. Our results demonstrate an essential role for Wnt/frizzled signaling in adult zebrafish kidney development and regeneration, highlighting conserved mechanisms underlying both mammalian kidney development and kidney stem cell-directed neonephrogenesis in zebrafish.
Genes / Markers
Figures
Figure Gallery (7 images)
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Expression
No data available
Phenotype
No data available
Mutations / Transgenics
Allele Construct Type Affected Genomic Region
fb203
    		Insertion
    fb204
      		Small Deletion
      pt303TgTransgenic Insertion
        zh50TgTransgenic Insertion
          1 - 4 of 4
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          Human Disease / Model
          No data available
          Sequence Targeting Reagents
          Target Reagent Reagent Type
          fzd9bCRISPR1-fzd9bCRISPR
          1 - 1 of 1
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          Fish
          No data available
          Antibodies
          No data available
          Orthology
          No data available
          Engineered Foreign Genes
          Marker Marker Type Name
          EGFPEFGEGFP
          mCherryEFGmCherry
          1 - 2 of 2
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          Mapping
          No data available
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          Citation
          Kamei, C.N., Gallegos, T.F., Liu, Y., Hukriede, N., Drummond, I.A. (2019) Wnt signaling mediates new nephron formation during zebrafish kidney regeneration. Development (Cambridge, England). 146(8):.