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Mouse Eye Enucleation for Remote High-throughput Phenotyping
Published on: November 19, 2011
19.9K
Peroxidasin is essential for eye development in the mouse.
Xiaohe Yan1, Sibylle Sabrautzki2, Marion Horsch3
1Helmholtz Center Munich, German Research Center for Environmental Health, Institute of Developmental Genetics, Neuherberg, Germany.
Human Molecular Genetics
|June 5, 2014
Summary
Peroxidasin (PXDN) is crucial for eye development. Mutations cause severe congenital eye disorders by disrupting lens development, basement membrane integrity, and leading to glaucoma and retinal dysgenesis.
Area of Science:
- Ophthalmology
- Developmental Biology
- Genetics
Background:
- Peroxidasin (PXDN) mutations are linked to human inherited eye disorders like congenital cataract and glaucoma.
- The precise role of peroxidasin in ocular development remains largely unknown.
Purpose of the Study:
- To investigate the function of peroxidasin during eye development using a novel mouse mutant.
- To elucidate the pathogenic mechanisms underlying PXDN mutation-induced congenital eye diseases.
Main Methods:
- Generated and characterized an ENU-induced recessive Pxdn mouse mutant.
- Performed sequence analysis, histological examination, and transcriptome profiling.
- Assessed lens proliferation, differentiation, and basement membrane integrity.
Main Results:
- The Pxdn mutant exhibited anterior segment dysgenesis and microphthalmia, mirroring human PXDN-related eye conditions.
- Mutant eyes showed disrupted lens proliferation/differentiation, aberrant Pax6/Foxe3 expression, and compromised basement membrane consolidation.
- Secondary damage included lens capsule defects, extrusion of lens material, ocular inflammation, early-onset glaucoma, and retinal dysgenesis.
Conclusions:
- Peroxidasin is essential for normal eye development, regulating cell proliferation, differentiation, and basement membrane integrity.
- PXDN mutations disrupt these processes, leading to a spectrum of congenital eye abnormalities and glaucoma.
- This study provides critical insights into the molecular pathogenesis of PXDN-associated inherited eye diseases.
