Abstract:
PURPOSE:To characterize the molecular properties, cellular distribution, and subcellular distribution of bovine rom-1 and its interaction with peripherin/rds in photoreceptor cells as an important step toward elucidating the role of rom-1 in photoreceptor outer segment structure-function relationships and in inherited retinal degenerative disorders. METHODS:Bovine rom-1 cDNA, including a portion of the promoter region, was cloned, sequenced, and heterologously expressed in CHO-K1 and COS-1 cultured mammalian cells. Monoclonal and polyclonal antibodies to specific regions of bovine rom-1 were generated and used with biochemical and immunocytochemical techniques to study the membrane topology, subcellular distribution, and interaction of rom-1 with peripherin/rds. RESULTS:The primary structure of bovine rom-1 is highly homologous to that of human and mouse rom-1. Proteolytic digestion studies and immunolabeling studies of rom-1 in rod outer segment membranes indicate that the C-terminus of rom-1 is localized to the cytoplasmic side and that a large segment is localized to the lumen side of the disc membrane. Post-embedding and pre-embedding immunogold labeling studies for electron microscopy show that rom-1 is localized to the rim region of bovine rod outer segment disc membranes; rom-1 or a closely related homologue also is present at the rim region of cone outer segment disc membranes. Immunofluorescence studies of mammalian cells expressing rom-1 indicate that rom-1 is not translocated to the plasma membrane but instead is retained in internal cellular membranes. Immunoprecipitation studies indicate that all rom-1 and peripherin/rds from rod outer segments form a tightly associated complex. CONCLUSIONS:Rom-1 and peripherin/rds are two structurally related protein subunits of an integral membrane protein complex found on the rim region of rod outer segment disc membranes. Rom-1 or a homologue also is present in the rim region of cone outer segment disc membranes, where it most likely associates with peripherin/rds to form a membrane protein complex.
journal_name
Invest Ophthalmol Vis Scijournal_title
Investigative ophthalmology & visual scienceauthors
Moritz OL,Molday RSsubject
Has Abstractpub_date
1996-02-01 00:00:00pages
352-62issue
2eissn
0146-0404issn
1552-5783journal_volume
37pub_type
杂志文章abstract::Recently protease inhibitors were used to treat corneal ulceration and persistent epithelial defect. An organ culture system was used in this study to examine the effect of four protease inhibitors on rat corneal epithelial migration and on incorporation of 3H-leucine into trichloroacetic acid-precipitable material as...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:
更新日期:1991-06-01 00:00:00
abstract:PURPOSE:Platelet-derived growth factor (PDGF) is an important stimulatory factor for proliferative retinopathies. Expression of PDGF-B in the retinas of transgenic mice (hemizygous rho/PDGF-B mice) results in rapid-onset retinal detachment caused by proliferation of glial cells, endothelial cells, and pericytes, wherea...
journal_title:Investigative ophthalmology & visual science
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journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章,多中心研究
doi:10.1167/iovs.17-23334
更新日期:2018-02-01 00:00:00
abstract::The authors used a psychophysical method to measure lens transmission of young, type I diabetic patients and normal controls. The results from normal controls agreed with previously published reports of decreasing lens transmission with age, and those from diabetic subjects suggested that lenses of young, type I diabe...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:
更新日期:1991-01-01 00:00:00
abstract:Purpose:Structural retinal microvascular changes have been identified as risk markers of diabetic retinopathy (DR). In order to estimate the retinal response of neuroprotective eye drops, we aimed to evaluate the effect of topical retinal neuroprotection on retinal microvascular changes in early DR. Methods:Patients w...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章,多中心研究
doi:10.1167/iovs.18-26487
更新日期:2019-05-01 00:00:00
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journal_title:Investigative ophthalmology & visual science
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pub_type: 杂志文章
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更新日期:2006-09-01 00:00:00
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journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:
更新日期:1988-03-01 00:00:00
abstract::We have investigated alterations of the metabolic state in vitamin A-deficient (A-) corneas using phosphorus-31 (31P) nuclear magnetic resonance (NMR) spectroscopy. Comparing to the control, A- corneas showed a prominent rise of phosphocreatine (PCr) as well as a total loss of glycerophosphorylcholine (GPC). Further, ...
journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:
更新日期:1989-04-01 00:00:00
abstract:PURPOSE:To investigate the effect of Fas and Fas ligand (FasL) deficiency on the development of herpes stromal keratitis and on the von Szily model of herpes retinitis in C57BL/6 mice, which are ordinarily resistant to development of both of these herpetic diseases. METHODS:Anterior chamber inoculation of the right ey...
journal_title:Investigative ophthalmology & visual science
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doi:
更新日期:2001-10-01 00:00:00
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journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:
更新日期:2000-09-01 00:00:00
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更新日期:2000-06-01 00:00:00
abstract:PURPOSE:Invasion of tumor cells into blood vessels is essential for metastasis of uveal melanoma. The occurrence of ingrowth of tumor cells in blood vessels in uveal melanoma was analyzed, and this parameter was compared with the survival of the patients. METHODS:Between 1972 and 2007, 643 eyes primarily enucleated fo...
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pub_type: 杂志文章
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journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:
更新日期:1989-08-01 00:00:00
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journal_title:Investigative ophthalmology & visual science
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doi:
更新日期:1995-02-01 00:00:00
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journal_title:Investigative ophthalmology & visual science
pub_type: 杂志文章
doi:
更新日期:1996-03-01 00:00:00