PMID- 24664760 OWN - NLM STAT- MEDLINE DCOM- 20140724 LR - 20211021 IS - 0065-2598 (Print) IS - 0065-2598 (Linking) VI - 801 DP - 2014 TI - Cone specific promoter for use in gene therapy of retinal degenerative diseases. PG - 695-701 LID - 10.1007/978-1-4614-3209-8_87 [doi] AB - Achromatopsia (ACHM) is caused by a progressive loss of cone photoreceptors leading to color blindness and poor visual acuity. Animal studies and human clinical trials have shown that gene replacement therapy with adeno-associate virus (AAV) is a viable treatment option for this disease. Although there have been successful attempts to optimize capsid proteins for increased specificity, it is simpler to restrict expression via the use of cell type-specific promoters. To target cone photoreceptors, a chimeric promoter consisting of an enhancer element of interphotoreceptor retinoid-binding protein promoter and a minimal sequence of the human transducin alpha-subunit promoter (IRBPe/GNAT2) was created. Additionally, a synthetic transducin alpha-subunit promoter (synGNAT2/GNAT2) containing conserved sequence blocks located downstream of the transcriptional start was created. The strength and specificity of these promoters were evaluated in murine retina by immunohistochemistry. The results showed that the chimeric, (IRBPe/GNAT2) promoter is more efficient and specific than the synthetic, synGNAT2/GNAT2 promoter. Additionally, IRBPe/GNAT2-mediated expression was found in all cone subtypes and it was improved over existing promoters currently used for gene therapy of achromatopsia. FAU - Dyka, Frank M AU - Dyka FM AD - Department of Ophthalmology, College of Medicine, University of Florida, 1600 SW Archer Rd., 32610, Gainesville, FL, USA, fmdyka@ufl.edu. FAU - Boye, Sanford L AU - Boye SL FAU - Ryals, Renee C AU - Ryals RC FAU - Chiodo, Vince A AU - Chiodo VA FAU - Boye, Shannon E AU - Boye SE FAU - Hauswirth, William W AU - Hauswirth WW LA - eng GR - P30 EY021721/EY/NEI NIH HHS/United States GR - T32 EY007132/EY/NEI NIH HHS/United States PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Adv Exp Med Biol JT - Advances in experimental medicine and biology JID - 0121103 RN - 0 (Eye Proteins) RN - 0 (Recombinant Fusion Proteins) RN - 0 (Retinol-Binding Proteins) RN - 0 (interstitial retinol-binding protein) RN - EC 3.6.5.1 (Transducin) SB - IM MH - Animals MH - Color Vision Defects/*genetics/pathology/*therapy MH - Dependovirus/genetics MH - Dogs MH - Eye Proteins/genetics MH - Gene Expression Regulation MH - Genetic Therapy/*methods MH - Humans MH - Mice MH - Promoter Regions, Genetic/*genetics MH - Rats MH - Recombinant Fusion Proteins/genetics MH - Retinal Cone Photoreceptor Cells/pathology/*physiology MH - Retinol-Binding Proteins/genetics MH - Transducin/*genetics PMC - PMC4450355 MID - NIHMS694532 EDAT- 2014/03/26 06:00 MHDA- 2014/07/25 06:00 PMCR- 2015/06/01 CRDT- 2014/03/26 06:00 PHST- 2014/03/26 06:00 [entrez] PHST- 2014/03/26 06:00 [pubmed] PHST- 2014/07/25 06:00 [medline] PHST- 2015/06/01 00:00 [pmc-release] AID - 10.1007/978-1-4614-3209-8_87 [doi] PST - ppublish SO - Adv Exp Med Biol. 2014;801:695-701. doi: 10.1007/978-1-4614-3209-8_87.