Mutations in human PRPF31 gene have been identified in patients with autosomal dominant retinitis pigmentosa (adRP). To begin to understand mechanisms by which defects in this general splicing factor cause retinal degeneration, we examined the relationship between PRPF31 and pre-mRNA splicing of photoreceptor-specific genes. We used a specific anti-PRPF31 antibody to immunoprecipitate splicing complexes from retinal cells and identified the transcript of rhodopsin gene (RHO) among RNA species associated with PRPF31-containing complexes. Mutant PRPF31 proteins significantly inhibited pre-mRNA splicing of intron 3 in RHO gene. In primary retinal cell cultures, expression of the mutant PRPF31 proteins reduced rhodopsin expression and caused apoptosis of rhodopsin-positive retinal cells. This primary retinal culture assay provides an in vitro model to study photoreceptor cell death caused by PRPF31 mutations. Our results demonstrate that mutations in PRPF31 gene affect RHO pre-mRNA splicing and reveal a link between PRPF31 and RHO, two major adRP genes.
Mutations in PRPF31 Inhibit Pre-mRNA Splicing of Rhodopsin Gene and Cause Apoptosis of Retinal Cells
Liya Yuan,Mariko Kawada,N. Havlioglu,Hao Tang,Jane Y. Wu
Published 2005 in Journal of Neuroscience
ABSTRACT
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- Publication year
2005
- Venue
Journal of Neuroscience
- Publication date
2005-01-19
- Fields of study
Biology, Medicine
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- External record
- Source metadata
Semantic Scholar, PubMed
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