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细胞-77

Mol Ther. 2014 Jun 4. doi: 10.1038/mt.2014.100. [Epub ahead of print]6 o. H; P0 W" w" B3 }  S
Gene Therapy in Patient-specific Stem Cell Lines and a Preclinical Model of Retinitis Pigmentosa With Membrane Frizzled-related Protein Defects.
* A% ]1 ?) H' \8 f* i+ n# v; j' V: CLi Y1, Wu WH1, Hsu CW1, Nguyen HV2, Tsai YT1, Chan L1, Nagasaki T1, Maumenee IH3, Yannuzzi LA1, Hoang QV4, Hua H5, Egli D6, Tsang SH7.
9 Q9 Q1 z' K5 e8 nAuthor information$ S, ~7 c) k8 \. \$ i
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Abstract3 _1 \& u" f* H1 D9 A
Defects in Membrane Frizzled-related Protein (MFRP) cause autosomal recessive retinitis pigmentosa (RP). MFRP codes for a retinal pigment epithelium (RPE)-specific membrane receptor of unknown function. In patient-specific induced pluripotent stem (iPS)-derived RPE cells, precise levels of MFRP, and its dicistronic partner CTRP5, are critical to the regulation of actin organization. Overexpression of CTRP5 in naïve human RPE cells phenocopied behavior of MFRP-deficient patient RPE (iPS-RPE) cells. AAV8 (Y733F) vector expressing human MFRP rescued the actin disorganization phenotype and restored apical microvilli in patient-specific iPS-RPE cell lines. As a result, AAV-treated MFRP mutant iPS-RPE recovered pigmentation and transepithelial resistance. The efficacy of AAV-mediated gene therapy was also evaluated in Mfrprd6/Mfrprd6 mice-an established preclinical model of RP-and long-term improvement in visual function was observed in AAV-Mfrp-treated mice. This report is the first to indicate the successful use of human iPS-RPE cells as a recipient for gene therapy. The observed favorable response to gene therapy in both patient-specific cell lines, and the Mfrprd6/Mfrprd6 preclinical model suggests that this form of degeneration caused by MFRP mutations is a potential target for interventional trials.Molecular Therapy (2014); doi:10.1038/mt.2014.100.
$ g$ ]7 e. k! {. f0 b- UPMID: 24895994 [PubMed - as supplied by publisher]
. p5 c1 y# b; M$ `http://www.ncbi.nlm.nih.gov/pubmed/24895994' V+ R$ v; n5 c- E( _