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Modelling human lower urinary tract malformations in zebrafish.

Caroline M Kolvenbach1,2, Gabriel C Dworschak3,4,5, Johanna M Rieke6

  • 1Institute of Anatomy, Medical Faculty, University of Bonn, Bonn, Germany. Caroline.Kolvenbach@gmail.com.

Molecular and Cellular Pediatrics
|March 28, 2023
PubMed
Summary
This summary is machine-generated.

Zebrafish models accelerate the study of genetic causes for congenital lower urinary tract malformations. This research validates zebrafish as a powerful tool for investigating human urinary tract development and disease genes.

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Area of Science:

  • Developmental Biology
  • Genetics
  • Comparative Medicine

Background:

  • Human congenital lower urinary tract malformations (LUTM) have complex genetic underpinnings.
  • Recent discoveries implicate BNC2, WNT3, and SLC20A1 genes in LUTM and bladder-exstrophy-epispadias complex (BEEC).
  • Validating candidate genes requires functional studies in relevant developmental models.

Purpose of the Study:

  • To establish and validate the zebrafish (Danio rerio) as a model organism for studying human LUTM.
  • To demonstrate the utility of zebrafish for investigating the pathogenicity of candidate genes identified from human genetic data.
  • To explore the transferability of findings from zebrafish to human lower urinary tract development.

Main Methods:

  • Utilized zebrafish for its rapid reproduction, anatomical homology, and genetic manipulability (Morpholino, CRISPR/Cas).
  • Employed whole-mount in situ hybridization (WISH) for marker staining of developmental molecules.
  • Used transgenic zebrafish lines with tissue-specific promoters for phenotypic visualization and functional assays of excretory organs.

Main Results:

  • Demonstrated the feasibility of using zebrafish to investigate candidate genes for LUTM.
  • Showcased the ability to visualize phenotypic abnormalities and assess organ function in genetically modified zebrafish.
  • Provided evidence for the utility of zebrafish in understanding the genetic basis of human congenital urinary tract disorders.

Conclusions:

  • Zebrafish offer a rapid, efficient, and versatile platform for studying the genetic etiology of human lower urinary tract malformations.
  • This model system facilitates the functional validation of candidate genes and the investigation of developmental pathways.
  • Findings in zebrafish can cautiously inform our understanding of causality in human congenital urinary tract development.