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Adeno-associated virus mediated rhodopsin delivery in preventing secondary cone degeneration in rhodopsin knockout miceDauletbekov, Daniyar January 2016 (has links)
Rhodopsin-linked retinitis pigmentosa (RP) is the most common form of autosomal dominant RP, an inherited retinal degeneration, in which rod degeneration is followed by secondary cone loss leading to loss of vision and blindness. The overall objective of this work was to develop an optimized gene replacement therapy, delivering the rhodopsin gene for rhodopsin- linked RP and establish whether secondary cone loss can be delayed. A fast-acting single mutant serotype 8 self-complementary adeno-associated virus vector was produced containing the human rhodopsin promoter and the human rhodopsin coding sequence. In vivo studies in rhodopsin knockout mouse showed that the vector administration led to widespread and robust expression of the transgene. Subretinal injection of the vector into three-week pups of rhodopsin knockout mice with cones expressing green fluorescent protein showed restoration of rod-derived electroretinogram (ERG) responses, and preservation of cone- driven ERG responses three months after injection. Similarly, the longitudinal follow-up with confocal scanning ophthalmoscopy found preservation of fluorescent cones up to three months after injection. Overall, these data provided evidence that the designed vector resulted in significant benefit to rod photoreceptors as well as in delay in secondary cone degeneration and built a basis for future use of this vector on dominant models of RP.
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Brain Region and Cell Type Specific Approaches to Study Drug AbuseNaughton, Bartholomew J., IV 20 October 2011 (has links)
No description available.
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