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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Mouse genetic corneal disease resulting from transgenic insertional mutagenesis.

BACKGROUND/AIMS: To report the generation of a new mouse model for a genetically determined corneal abnormality that occurred in transgenesis experiments. METHODS: Transgenic mice expressing mutant forms of Rab27a, a GTPase that has been implicated in the pathogenesis of choroideremia, were generated. RESULTS: Only one transgenic line (T27aT15) exhibited an unexpected eye phenotype. T27aT15 mice developed corneal opacities, usually unilateral, and cataracts, resulting in some cases in phthisical eyes. Histologically, the corneal stroma was thickened and vacuolated, and both epithelium and endothelium were thinned. The posterior segment of the eye was also affected with abnormal pigmentation, vessel narrowing, and abnormal leakage of dye upon angiography but was histologically normal. CONCLUSION: Eye abnormality in T27aT15 mice results from random insertional mutagenesis of the transgene as it was only observed in one line. The corneal lesion observed in T27aT15 mice most closely resembles posterior polymorphous corneal dystrophy and might result from the disruption of the equivalent mouse locus.[1]


  1. Mouse genetic corneal disease resulting from transgenic insertional mutagenesis. Ramalho, J.S., Gregory-Evans, K., Huxley, C., Seabra, M.C. The British journal of ophthalmology. (2004) [Pubmed]
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