Mouse models for microphthalmia, anophthalmia and cataracts

Area of Science:

• Ophthalmogenetics
• Developmental Biology
• Genetics

Background:

• Mouse mutants are established tools for identifying genes associated with eye diseases.
• Existing mouse models cover numerous genes for anophthalmia, microphthalmia, and cataracts, but some loci remain uncharacterized.
• Certain genetic loci identified in human eye diseases lack corresponding mouse models.

Purpose of the Study:

• To assess the utility of mouse mutants in ophthalmogenetics research.
• To identify gaps in current mouse models for human eye diseases.
• To explore the potential of mouse models for studying genetic modifiers and single nucleotide polymorphisms (SNPs).

Main Methods:

• Review and analysis of existing literature on mouse mutants and eye disease genes.
• Phenotypic characterization of mouse models for anophthalmia, microphthalmia, and cataracts.
• Comparison of known human disease genes with available mouse models.

Main Results:

• A significant number of genes are associated with anophthalmia (145), microphthalmia (269), and cataracts (180) in mice.
• Approximately 25% of identified loci are uncharacterized, and some historical mouse lines are extinct.
• Phenotypes often exist on a continuous spectrum, and mouse models are lacking for some human disease-causing genes.

Conclusions:

• Mouse mutants remain invaluable for ophthalmogenetics, offering easily detectable phenotypes.
• Further development of mouse models is necessary to cover all known human eye disease genes.
• The mouse provides a platform for investigating genetic modifiers and SNPs, advancing the field of ophthalmogenetics.