Cited by 45Retinal Development and DisordersRetinal Diseases and TreatmentsRetinoids in leukemia and cellular processes

RPE65 Is Present in Human Green/Red Cones and Promotes Photopigment Regeneration in an In Vitro Cone Cell Model

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Tang, Peter H., Buhusi, Mona C., Ma, Jian-Xing, Crouch, Rosalie K.·2011·The Journal of Neuroscience

Abstract

RPE65 is an abundantly expressed protein within the retinal pigment epithelium (RPE) of the eye that is required for retinoid metabolism to support vision. Its genetic mutations are linked to the congenital disease Leber congenital amaurosis Type 2 (LCA2) characterized by the early onset of central vision loss. Current gene therapy trials have targeted restoration of functional RPE65 within the RPE of these patients with some success. Recent data show that RPE65 is also present within mouse cones to promote function. In this study, we evaluated the presence of RPE65 in human cones and investigated its potential mechanism for supporting cone function in the 661W cone cell line. We found that RPE65 was selectively expressed in human green/red cones but absent from blue cones and mediated ester hydrolysis for photopigment synthesis in vitro. These data suggest that cone RPE65 supports human diurnal vision, potentially enhancing our strategies for treating LCA2.

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Crossref · 10.1523/jneurosci.4265-11.2011

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  • Amounts of 11-cis, all-trans, and 13-cis RAL are significantly reduced in Atg5ΔRPE mice compared to littermate controls.

    “The results, quantitated according to previously published protocol (Tang et al., 2011), show that the amounts of 11-cis, all-trans, and 13-cis RAL were significantly reduced in Atg5ΔRPE mice compared to littermate controls (Figure 7C).”

    From Noncanonical autophagy promotes the visual cycle (2013) · cites this paper as Tang et al., 2011

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Authors
Tang, P. H., Buhusi, M. C., Ma, J.-X., & Crouch, R. K.
Affiliations
  • Medical University of South Carolina (US)
  • University of Oklahoma Health Sciences Center (US)
Venue
The Journal of Neuroscience
Published
2011-12-14
Volume
31
Issue
50
Pages
18618-18626
ISSN
  • 0270-6474 (ISSN-L)
  • 1529-2401
OpenAlex
W2168260507
Cited by
45
References
44
Citations by year
2026: 1 · 2025: 1 · 2024: 1 · 2022: 2 · 2021: 4 · 2020: 4 · 2019: 1 · 2018: 7 · 2017: 4 · 2016: 3 · 2015: 3 · 2014: 8 · 2013: 2 · 2012: 4
FWCI
1.82
Type
journal article
Language
en
Open access
Locations
  • Journal of Neuroscience (publishedVersion, cc-by-nc-sa)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Research to Prevent Blindness
  • University of South Carolina
  • National Institutes of Health (1c06rr015455-01a1)
  • National Eye Institute (R21EY020661, R01 EY04939, R01EY012231, R01EY004939)
  • National Center for Research Resources (C06 RR-015455)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Retinal Development and Disorders
  • Health Sciences › Medicine › Ophthalmology › Retinal Diseases and Treatments
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Retinoids in leukemia and cellular processes
Keywords
RPE65, retinal pigment epithelium, cone photoreceptors, vitamin A metabolism, ester hydrolysis, diurnal vision, gene therapy
MeSH terms
Retinoid Isomerohydrolase, Aged, 80 and over, Carrier Proteins, Cell Line, Child, Eye Proteins, Female, Humans, Male, Pigment Epithelium of Eye, Regeneration, Retinal Cone Photoreceptor Cells, cis-trans-Isomerases, Young Adult, Leber Congenital Amaurosis

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