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Updated: Aug 19, 2025
Evaluation of Planar-Cell-Polarity Phenotypes in Ciliopathy Mouse Mutant Cochlea
Published on: February 21, 2016
Analysis of genome-wide knockout mouse database identifies candidate ciliopathy genes
Kendall Higgins1, Bret A Moore2, Zorana Berberovic3,4
1The University of Miami Leonard M. Miller School of Medicine, Miami, FL, 33136, USA.
Abstract:
We searched a database of single-gene knockout (KO) mice produced by the International Mouse Phenotyping Consortium (IMPC) to identify candidate ciliopathy genes. We first screened for phenotypes in mouse lines with both ocular and renal or reproductive trait abnormalities. The STRING protein interaction tool was used to identify interactions between known cilia gene products and those encoded by the genes in individual knockout mouse strains in order to generate a list of "candidate ciliopathy genes." From this list, 32 genes encoded proteins predicted to interact with known ciliopathy proteins. Of these, 25 had no previously described roles in ciliary pathobiology. Histological and morphological evidence of phenotypes found in ciliopathies in knockout mouse lines are presented as examples (genes Abi2, Wdr62, Ap4e1, Dync1li1, and Prkab1). Phenotyping data and descriptions generated on IMPC mouse line are useful for mechanistic studies, target discovery, rare disease diagnosis, and preclinical therapeutic development trials. Here we demonstrate the effective use of the IMPC phenotype data to uncover genes with no previous role in ciliary biology, which may be clinically relevant for identification of novel disease genes implicated in ciliopathies.
Insights
Researchers identified novel candidate ciliopathy genes using the International Mouse Phenotyping Consortium (IMPC) database. This study highlights 25 previously unknown genes potentially linked to ciliopathies, aiding rare disease diagnosis.
Area of Science:
- Genetics
- Molecular Biology
- Developmental Biology
Background:
- Ciliopathies are a group of genetic disorders caused by defects in cilia.
- Identifying novel genes involved in ciliopathies is crucial for understanding disease mechanisms and developing diagnostics.
Purpose of the Study:
- To identify novel candidate genes associated with ciliopathies.
- To leverage the International Mouse Phenotyping Consortium (IMPC) database for gene discovery.
Main Methods:
- Screened IMPC single-gene knockout (KO) mouse lines for ocular and renal/reproductive phenotypes.
- Utilized the STRING protein interaction tool to identify candidate genes interacting with known ciliopathy proteins.
- Analyzed histological and morphological data from KO mouse lines.
Main Results:
- Identified 32 candidate ciliopathy genes based on protein-protein interactions.
- Discovered 25 genes with no previously described role in ciliary pathobiology.
- Presented evidence of ciliopathy-like phenotypes in KO mouse lines for specific genes (e.g., Abi2, Wdr62).
Conclusions:
- The IMPC database and phenotyping data are valuable resources for uncovering novel disease genes.
- This study identified potential new genes implicated in ciliopathies, offering avenues for mechanistic studies and clinical applications.
