Abstract：
:Retinal pigment epithelial (RPE) cells possess the potential to transdifferentiate into myofibroblasts after stimulation with transforming growth factor beta (TGFbeta) and are implicated in the pathogenesis of proliferative vitreoretinopathy. In this study we evaluated how TGFbeta2 and various extracellular matrix (ECM) proteins modulate the transdifferentiation of human fetal retinal pigment epithelial cells (RPE) cells into myofibroblast-like cells. Furthermore, we investigated whether hepatocyte growth factor (HGF) can suppress this transdifferentiation. RPE cells were cultured on ECM coated or uncoated surfaces in the presence or absence of TGFbeta2. HGF was added to certain cultures only once or on a daily basis during the treatment. Transdifferentiation of RPE cells into myofibroblasts was assessed by the quantitation of alpha-smooth muscle actin (alpha-SMA) using immunocytochemistry, flow cytometry, real-time PCR and Western blotting. TGFbeta2 induced a significant increase of alpha-SMA expression in a dose-dependent manner. Compared with growth on uncoated surfaces, RPE cultured on fibronectin (FN)-coated surfaces and stimulated with TGFbeta2 showed a significantly higher alpha-SMA expression than untreated cells. This upregulation of alpha-SMA could be markedly reduced by daily treatment with HGF; however, a single HGF administration did not significantly reduce alpha-SMA. These findings are important for further understanding the interaction of cytokines, RPE cells and their environment in mesenchymal transformation as well as its possible modulation. Continuous or long-term treatment with HGF should be further investigated for its potential to prevent mesenchymal transdifferentiation of RPE cells, and ultimately, PVR in vivo.
journal_name
Exp Eye Resjournal_title
Experimental eye researchauthors
Gamulescu MA,Chen Y,He S,Spee C,Jin M,Ryan SJ,Hinton DRdoi
10.1016/j.exer.2005.12.007keywords:
subject
Has Abstractpub_date
2006-07-01 00:00:00pages
212-22issue
1eissn
0014-4835issn
1096-0007pii
S0014-4835(06)00124-2journal_volume
83pub_type
杂志文章abstract：:The ocular lens fiber cell assembles a novel cytoskeletal element, the Beaded Filament, from CP49 and filensin, two proteins expressed only in the differentiated lens fiber cell. We report the primary sequence, secondary structural analysis, gene structure and Yeast Two Hybrid interaction data for human filensin, and ...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1006/exer.1998.0478
更新日期：1998-05-01 00:00:00
abstract：:Thrombospondin-1 (TSP-1) is a multifunctional matrix protein that has recently been examined in various wound processes, primarily for its ability to activate the latent complex of transforming growth factor-beta (TGF-β). TGF-β has been shown to play a major role in stimulating mesenchymal cells to synthesize extracel...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/j.exer.2011.06.018
更新日期：2011-10-01 00:00:00
abstract：:Utilizing a human beta-actin promoter, a catalase cDNA expression vector was constructed. This construct was used to transfect two immortal cell lines, mouse alpha TN4-1 and rabbit N/N 1003A. The catalase activity was increased about 3.4 fold in the alpha TN4-1 cells and 38 fold in the N/N 1003A cells. Some changes in...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1006/exer.1998.0560
更新日期：1998-12-01 00:00:00
abstract：:Childhood glaucoma is an important cause of blindness world-wide. Eleven genes are currently known to cause inherited forms of glaucoma with onset before age 20. While all the early-onset glaucoma genes cause severe disease, considerable phenotypic variability is observed among mutations carriers. In particular, FOXC1...
journal_title：Experimental eye research
pub_type： 杂志文章,评审
doi：10.1016/j.exer.2019.107893
更新日期：2020-01-01 00:00:00
abstract：:To determine the effect of roscovitine, a potent antiviral in tissue culture administered intramuscularly to rabbits or by eye drops to mice for the treatment of herpetic keratitis this study was commenced.New Zealand white rabbits infected with McKrae strain herpesvirus (HSV-1) were treated twice a day with 10mg Rosc...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/s0014-4835(03)00056-3
更新日期：2003-06-01 00:00:00
abstract：:Myopia (short-sightedness) is a visual problem associated with excessive eye growth and vitreous chamber expansion. Within the eye serotonin (5-hydroxytryptamine, 5-HT) appears to have a variety of effects, it alters retinal amacrine cell processing, increases intraocular pressure, constricts ocular blood vessels, and...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/j.exer.2005.03.021
更新日期：2005-11-01 00:00:00
abstract：:Addition of substance P (10(-7) to 10(-6) M) to rabbit iris sphincter muscle induced: (a) a rapid phosphodiesteratic breakdown of phosphatidylinositol 4,5-bisphosphate (PIP2) into 1,2-diacylglycerol (DG), measured as phosphatidic acid, and inositol triphosphate (IP3), measured by anion-exchange chromatography; (b) a r...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/s0014-4835(86)80089-6
更新日期：1986-08-01 00:00:00
abstract：:Angiotensin II and aldosterone are the main effectors of the renin-angiotensin aldosterone system (RAAS) and have a central role in hypertension as well as cardiovascular and renal disease. The localization of RAAS components within the retina has led to studies investigating the roles of angiotensin II, aldosterone a...
journal_title：Experimental eye research
pub_type： 杂志文章,评审
doi：10.1016/j.exer.2019.107766
更新日期：2019-10-01 00:00:00
abstract：:The C-terminal region of peripherin/rds contains three predicted alpha-helical domains. One of these domains, corresponding to amino acids 311-322, form an amphiphilic alpha-helix previously shown to promote membrane fusion. The present studies were conducted to determine how the additional alpha-helical regions of th...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1006/exer.2002.2013
更新日期：2002-08-01 00:00:00
abstract：:Recurrences of herpetic stromal keratitis are believed to be initiated by reactivation of herpes simplex virus infection, probably in the trigeminal ganglion. Genetic features of the virus and the host as well as the immune status of the host influence the outcome of infection. Following infection on the snout with HS...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/0014-4835(92)90146-j
更新日期：1992-06-01 00:00:00
abstract：:Electrical stimulation of the preganglionic cervical sympathetic nerve produced ocular vasoconstrictor responses as measured from the anterior choroid of anesthetized cats using laser-Doppler flowmetry. Ipsilateral nictitating membrane contractions were simultaneously measured as an established index of neural sympath...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1006/exer.1993.1146
更新日期：1993-10-01 00:00:00
abstract：:Platelet-rich fibrin (PRF) is a natural biomaterial and has excellent biochemical and physical properties with a history of proven biocompatibility in the field of tissue engineering and regenerative medicine. Recent reports of fibrin-based matrices have offered new opportunities to apply PRF as a supplement for in vi...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/j.exer.2018.04.013
更新日期：2018-08-01 00:00:00
abstract：:The nature and the extent of acute injury to corneal endothelial cells caused by exposure to ultrasound radiation were characterized, as well as the long-term reaction of these cells to this form of injury. It was found that the degree of lethal cell injury induced by ultrasound scaled with exposure intensity and dura...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1006/exer.1998.0626
更新日期：1999-04-01 00:00:00
abstract：:A renewed interest in the characteristics and neural basis of corneal and conjunctival sensations is developing in recent years due to the high incidence of discomfort and altered sensitivity of the cornea following refractive surgery, use of contact lenses and dry eyes. Corneal nerves are functionally heterogeneous: ...
journal_title：Experimental eye research
pub_type： 杂志文章,评审
doi：10.1016/j.exer.2003.09.023
更新日期：2004-03-01 00:00:00
abstract：:Lactoferrin plays an important role in the defense against infections, including herpes simplex virus (HSV) keratitis. We studied the impact of three single nucleotide polymorphisms in the human lactoferrin gene on the susceptibility to HSV infections of the eye and the severity of such infections. Lactoferrin gene po...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/j.exer.2007.09.013
更新日期：2008-01-01 00:00:00
abstract：:Transforming growth factor β (TGFβ) signaling is one of the most important signaling pathways regulating cell behavior in ocular tissues. Its functions are mainly linked to tissue fibrosis and inflammatory responses in ophthalmology. In epithelial cells, however, the growth inhibitory activity of TGFβ was reported in ...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/j.exer.2019.03.014
更新日期：2019-05-01 00:00:00
abstract：:This study tests the hypothesis that choroidal myogenic autoregulation participates in the intraocular pressure (IOP) response to mean arterial pressure (MAP) by minimizing arterial-pressure-dependent changes in choroidal blood volume. To test this hypothesis, the IOP response to MAP was quantified before and after im...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1006/exer.1994.1047
更新日期：1994-05-01 00:00:00
abstract：:The cornea is a self-renewing tissue located at the front of the eye. Its transparency is essential for allowing light to focus onto the retina for visual perception. The continuous renewal of corneal epithelium is supported by limbal stem cells (LSCs) which are located in the border region between conjunctiva and cor...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/j.exer.2016.09.008
更新日期：2016-11-01 00:00:00
abstract：:Macular corneal dystrophy (MCD) is an autosomal recessive disease characterized by abnormal deposition of glycosaminoglycans in corneal stroma, keratocytes, Descemet's membrane and corneal endothelium. According to the presence and distribution of sulfated keratan sulfate (KS)-epitopes in serum and cornea (using mAb 5...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1006/exer.2001.1080
更新日期：2001-11-01 00:00:00
abstract：:Calf lenses which are incubated in solutions of 1-150 mM H2O2 for 24 hr remain clear at 20 degrees C. While insoluble lens protein increases by at most 2-3%, we find extensive oxidation of exposed protein thiols, major shifts in the size distribution of crystallins, and progressive generation of more acidic polypeptid...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/s0014-4835(89)80072-7
更新日期：1989-02-01 00:00:00
abstract：:Cell lines derived from the lens generally fail to maintain synthesis of crystallins in long-term culture. Here we demonstrate that the N/N1003A line of undifferentiated lens epithelial cells, derived from a newborn rabbit, does not produce detectable levels of alpha-, beta- or gamma-crystallin transcripts, yet is cap...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/0014-4835(89)90026-2
更新日期：1989-01-01 00:00:00
abstract：:In retinal degenerative disease (RD), the diminished light signal from dying photoreceptors has been considered the sole cause of visual impairment. Recent studies show a 10-fold increase in spontaneous activity in the RD network, challenging this paradigm. This aberrant activity forms a new barrier for the light sign...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/j.exer.2015.05.013
更新日期：2016-09-01 00:00:00
abstract：:Tissue transglutaminase (tTG) is a Ca(2+)-dependent enzyme catalyzing the formation of covalent crosslinks between peptide-bound glutamine and lysine residues. Lens crystallins, including alphaB-crystallin and several beta-crystallins, are in vitro substrates for tTG. In both human and bovine fetal lens extracts treat...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/j.exer.2007.11.011
更新日期：2008-02-01 00:00:00
abstract：:Following the identification of potent, orally active inhibitors of aldose reductase, the next challenge comes in demonstrating clinical utility in the treatment of diabetic complications. It is not feasible to conduct pivotal studies in all indications within the same trial and neuropathy evolved as the lead indicati...
journal_title：Experimental eye research
pub_type： 临床试验,杂志文章,评审
doi：10.1016/0014-4835(90)90103-2
更新日期：1990-06-01 00:00:00
abstract：:In our earlier study we showed that invasive retinoblastoma (RB) had down regulated tetraspanin protein KAI1/CD82, a family of cell surface glycoprotein. KAI1 may link to the cell surface molecules, such as integrins, E-cadherin, and other TM4SF members, and loss of KAI1 function may have a significant role in the pro...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/j.exer.2006.06.014
更新日期：2007-04-01 00:00:00
abstract：:When 15-day-old developing chick embryos were administered hydrocortisone hemisuccinate sodium (HC:0.25 mumol per egg) the concentration of glucose in both the aqueous humor and the vitreous body began to increase significantly after 3 hr and reached 24.4 +/- 0.3 mM and 22.3 +/- 0.9 mM, respectively, at 48 hr. Thereaf...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/s0014-4835(89)80050-8
更新日期：1989-10-01 00:00:00
abstract：:SPACRCAN is a novel proteoglycan present in the interphotoreceptor matrix (IPM) of the rat and human retina that resists aqueous extraction through its binding to hyaluronan. The purpose of this study was: to clone mouse Spacrcan; to characterize the promoter elements; to define the deduced amino acid sequence; to est...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/s0014-4835(02)00273-7
更新日期：2003-01-01 00:00:00
abstract：:The distribution of collagen degradation and synthesis (turnover) between the central and peripheral areas of clear corneal allografts was determined, following transplantation of 6-mm [3H]proline-labelled corneal buttons from extensively pre-labelled, young rabbits into 13 nonradioactive mature rabbits. Control, cont...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/s0014-4835(87)80076-3
更新日期：1987-07-01 00:00:00
abstract：:We wished to conduct a light and electron microscopic investigation of pigmentation within the trabecular meshwork of normals and primary open angle glaucoma (POAG) patients. In particular we wished to get a precise determination of whether there was a relationship between pigmentation and age. In addition we wanted t...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/j.exer.2005.10.009
更新日期：2006-06-01 00:00:00
abstract：:The vitreous is a clear, gel-like mass in the posterior cavity of the eye. Its major components are type II collagen, hyaluronic acid, and water. A small amount of proteoglycan is also present. All of these molecules are found in cartilage as well. We have now identified a non-collagenous protein in bovine and human v...
journal_title：Experimental eye research
pub_type： 杂志文章
doi：10.1016/s0014-4835(86)80074-4
更新日期：1986-09-01 00:00:00
