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
- Zebrafish/metabolism
- Wnt Signaling Pathway/genetics
- Wnt Signaling Pathway/physiology*
- Nephrons/cytology*
- Nephrons/metabolism*
- Zebrafish Proteins/genetics
- Zebrafish Proteins/metabolism
- Frizzled Receptors/genetics
- Frizzled Receptors/metabolism
- Animals
- Kidney/cytology*
- Kidney/metabolism*
- PubMed
- 31036548 Full text @ Development
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):.
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
Expression
Phenotype
Mutations / Transgenics
Human Disease / Model
Sequence Targeting Reagents
Fish
Orthology
Engineered Foreign Genes
Mapping