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Updated: Jul 7, 2026
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Evaluation of Planar-Cell-Polarity Phenotypes in Ciliopathy Mouse Mutant Cochlea
Published on: February 21, 2016
The stumpy gene is required for mammalian ciliogenesis
Terrence Town1, Joshua J Breunig, Matthew R Sarkisian
1Department of Immunobiology and Neurobiology, Section of Nephrology, Yale University School of Medicine, 300 Cedar Street, TAC S-569, New Haven, CT 06519-8011, USA.
Summary
A newly discovered gene, stumpy, is essential for cilia formation in mammals. Its absence causes severe developmental defects like hydrocephalus and polycystic kidney disease, highlighting its role in ciliogenesis.
Area of Science:
- Cell Biology
- Genetics
- Developmental Biology
Background:
- Cilia are crucial cellular organelles with diverse functions in mammals.
- The molecular mechanisms governing ciliogenesis remain largely unknown.
- Understanding ciliogenesis is vital for addressing congenital malformations.
Purpose of the Study:
- To identify and characterize novel genes involved in ciliogenesis.
- To elucidate the function of the stumpy gene in mammalian development.
- To investigate the role of stumpy in the pathogenesis of hydrocephalus and polycystic kidney disease.
Main Methods:
- Cloning and characterization of the stumpy gene in mice.
- Conditional gene knockout to assess stumpy function.
- Analysis of ciliary structure and function in mutant cells.
- Biochemical assays to determine protein interactions.
Main Results:
- Stumpy is a highly conserved, ubiquitously expressed gene.
- Conditional loss of stumpy leads to perinatal hydrocephalus and polycystic kidney disease in mice.
- Stumpy mutant cells exhibit absent or deformed cilia.
- Stumpy interacts with gamma-tubulin and localizes to basal bodies and axonemes.
Conclusions:
- Stumpy is essential for proper ciliogenesis and ciliary axoneme extension.
- Defects in stumpy function disrupt cerebrospinal fluid flow, leading to hydrocephalus.
- Stumpy plays a critical role in kidney development, and its dysfunction causes polycystic kidney disease.
- The stumpy gene is a potential factor in human congenital disorders like hydrocephalus and polycystic kidney disease.
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