1
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Alcalde I, Sánchez-Fernández C, Del Olmo-Aguado S, Martín C, Olmiere C, Artime E, Quirós LM, Merayo-Lloves J. Synthetic Heparan Sulfate Mimetic Polymer Enhances Corneal Nerve Regeneration and Wound Healing after Experimental Laser Ablation Injury in Mice. Polymers (Basel) 2022; 14:polym14224921. [PMID: 36433048 PMCID: PMC9694493 DOI: 10.3390/polym14224921] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Revised: 11/10/2022] [Accepted: 11/11/2022] [Indexed: 11/16/2022] Open
Abstract
(1) Background: Abnormal corneal wound healing compromises visual acuity and can lead to neuropathic pain. Conventional treatments usually fail to restore the injured corneal tissue. In this study, we evaluated the effectiveness of a synthetic heparan sulfate mimetic polymer (HSmP) in a mouse model of corneal wound healing. (2) Methods: A surgical laser ablation affecting the central cornea and subbasal nerve plexus of mice was used as a model of the wound-healing assay. Topical treatment with HSmP was contrasted to its vehicle and a negative control (BSS). Corneal repair was studied using immunofluorescence to cell proliferation (Ki67), apoptosis (TUNEL assay), myofibroblast transformation (αSMA), assembly of epithelial cells (E-cadherin) and nerve regeneration (β-tubulin III). (3) Results: At the end of the treatment, normal epithelial cytoarchitecture and corneal thickness were achieved in HSmP-treated animals. HSmP treatment reduced myofibroblast occurrence compared to eyes irrigated with vehicle (p < 0.01) or BSS (p < 0.001). The HSmP group showed 50% more intraepithelial nerves than the BSS or vehicle groups. Only HSmP-treated corneas improved the visual quality to near transparent. (4) Conclusions: These results suggest that HSmP facilitates the regeneration of the corneal epithelium and innervation, as well as restoring transparency and reducing myofibroblast scarring after laser experimental injury.
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Affiliation(s)
- Ignacio Alcalde
- Instituto Universitario Fernández-Vega, Fundación de Investigación Oftalmológica, University of Oviedo, 33012 Oviedo, Spain
- Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), 33011 Oviedo, Spain
- Correspondence:
| | - Cristina Sánchez-Fernández
- Instituto Universitario Fernández-Vega, Fundación de Investigación Oftalmológica, University of Oviedo, 33012 Oviedo, Spain
- Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), 33011 Oviedo, Spain
| | - Susana Del Olmo-Aguado
- Instituto Universitario Fernández-Vega, Fundación de Investigación Oftalmológica, University of Oviedo, 33012 Oviedo, Spain
- Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), 33011 Oviedo, Spain
| | - Carla Martín
- Instituto Universitario Fernández-Vega, Fundación de Investigación Oftalmológica, University of Oviedo, 33012 Oviedo, Spain
- Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), 33011 Oviedo, Spain
- Department of Functional Biology, University of Oviedo, 33006 Oviedo, Spain
| | - Céline Olmiere
- Laboratoires Thea S.A.S., 63000 Clermont-Ferrand, France
| | - Enol Artime
- Instituto Universitario Fernández-Vega, Fundación de Investigación Oftalmológica, University of Oviedo, 33012 Oviedo, Spain
- Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), 33011 Oviedo, Spain
| | - Luis M. Quirós
- Instituto Universitario Fernández-Vega, Fundación de Investigación Oftalmológica, University of Oviedo, 33012 Oviedo, Spain
- Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), 33011 Oviedo, Spain
- Department of Functional Biology, University of Oviedo, 33006 Oviedo, Spain
| | - Jesús Merayo-Lloves
- Instituto Universitario Fernández-Vega, Fundación de Investigación Oftalmológica, University of Oviedo, 33012 Oviedo, Spain
- Instituto de Investigación Sanitaria del Principado de Asturias (ISPA), 33011 Oviedo, Spain
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2
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Caban M, Owczarek K, Lewandowska U. The Role of Metalloproteinases and Their Tissue Inhibitors on Ocular Diseases: Focusing on Potential Mechanisms. Int J Mol Sci 2022; 23:ijms23084256. [PMID: 35457074 PMCID: PMC9026850 DOI: 10.3390/ijms23084256] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Revised: 04/04/2022] [Accepted: 04/09/2022] [Indexed: 02/01/2023] Open
Abstract
Eye diseases are associated with visual impairment, reduced quality of life, and may even lead to vision loss. The efficacy of available treatment of eye diseases is not satisfactory. The unique environment of the eye related to anatomical and physiological barriers and constraints limits the bioavailability of existing agents. In turn, complex ethiopathogenesis of ocular disorders that used drugs generally are non-disease specific and do not act causally. Therefore, there is a need for the development of a new therapeutic and preventive approach. It seems that matrix metalloproteinases (MMPs) and tissue inhibitors of metalloproteinases (TIMPs) have a significant role in the development and progression of eye diseases and could be used in the therapy of these disorders as pharmacological targets. MMPs and TIMPs play an important role in the angiogenesis, epithelial-mesenchymal transition, cell invasion, and migration, which occur in ocular diseases. In this review, we aim to describe the participation of MMPs and TIMPs in the eye diseases, such as age-related macular degeneration, cataract, diabetic retinopathy, dry eye syndrome, glaucoma, and ocular cancers, posterior capsule opacification focusing on potential mechanisms.
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Tan Y, Zhang M, Pan Y, Feng H, Xie L. Suppression of the caspase-1/GSDMD-mediated pyroptotic signaling pathway through dexamethasone alleviates corneal alkali injuries. Exp Eye Res 2021; 214:108858. [PMID: 34822855 DOI: 10.1016/j.exer.2021.108858] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Revised: 11/15/2021] [Accepted: 11/17/2021] [Indexed: 11/26/2022]
Abstract
The pathological mechanism of corneal injuries mediated by alkali burns are associated with Nucleotide-binding oligomerization domain (NOD)-like receptor (NLR) family pyrin domain containing 3 protein (NLRP3)-related corneal sterile inflammation. Whether the executive protein gasdermin D (GSDMD) of pyroptosis mediated by the NLRP3 inflammasome is present in alkali-induced corneal lesions remains unclear. Dexamethasone (Dex) is a commonly used drug for ocular surface diseases that can maintain corneal transparency and anti-inflammatory effects by topical administration. Here, we presented evidence that the effect of Dex on the pyroptosis-related caspase-1/GSDMD pathway in corneal alkali burns (CABs). We assessed the clinical manifestations and histological characteristics of the placebo group, 0.05% Dex group, 0.1% Dex group on day 3 or day 7 postburn and the control group (healthy corneas). The expression of factors (including NLRP3, caspase-1, cleaved-caspase-1, GSDMD, GSDMD-N termini, pro-interleukin(IL)-1β, IL-1β, pro-IL-18 and IL-18) involved in the pyroptosis related caspase-1/GSDMD signaling pathway was demonstrated by molecular experiments in CAB. Alkali burns can upregulate the originally relatively dim expression of NLRP3, caspase-1, cleaved-caspase-1, GSDMD, GSDMD-N, pro-IL-1β, pro-IL-18, IL-1β and IL-18 in the healthy corneal epithelium and stroma. However, Dex can reverse the enhanced expression at the two timepoints. Corneal sterile inflammation can activate the NLRP3 inflammasome through the innate immune response mechanism and then activate the pyroptosis-related caspase-1/GSDMD signaling pathway. In addition, Dex can inhibit pyroptosis through this pathway.
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Affiliation(s)
- Yuan Tan
- Department of Ophthalmology, Xiangyang No.1 People's Hospital, Hubei University of Medicine, Xiangyang, Hubei, China
| | - Min Zhang
- Department of Ophthalmology, Xiangyang No.1 People's Hospital, Hubei University of Medicine, Xiangyang, Hubei, China.
| | - Yingzhe Pan
- Department of Ophthalmology, Xiangyang No.1 People's Hospital, Hubei University of Medicine, Xiangyang, Hubei, China
| | - Huanhuan Feng
- Department of Ophthalmology, Xiangyang No.1 People's Hospital, Hubei University of Medicine, Xiangyang, Hubei, China
| | - Lixia Xie
- Central Laboratory, Xiangyang No.1 People's Hospital, Hubei University of Medicine, Xiangyang, Hubei, China
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4
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Yu C, Gao Y, Zhang Y, Wang J, Zhang Y, Li J, Zhang X, Wu Z, Zhang X. A Targeted Photosensitizer Mediated by Visible Light for Efficient Therapy of Bacterial Keratitis. Biomacromolecules 2021; 22:3704-3717. [PMID: 34380309 DOI: 10.1021/acs.biomac.1c00461] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Bacterial keratitis is a serious bacterial infection of the cornea that can cause sight loss in severe cases because of the sharp decline of efficacious antibiotics. Herein, a targeted photosensitizer based on BODIPY severing as a photobactericidal agent was developed for treating bacterial keratitis. The water solubility of the material was as high as 10 mg/mL, which was attributable to the introduction of pathogen-targeting galactose and fucose. The photosensitizer was able to preferentially bind Pseudomonas aeruginosa instead of mammalian cells and trigger the aggregation of bacteria, which ultimately facilitated effective pathogen ablation upon the generation of reactive oxygen species (ROS) via laser irradiation. Photoexcited targeted photosensitizers can promote wound healing by eradicating P. aeruginosa in rat eyes and reducing the inflammatory response, thus exhibiting the significant therapeutic effect on bacterial keratitis. We also performed molecular level mechanistic studies using the unique field-induced droplet ionization mass spectrometry methodology and confirmed that the generated ROS were mainly singlet oxygen that caused lipid peroxidation (Type II mechanism). We anticipate that the targeted photosensitizer will have great potential in the application of clinical photodynamic therapy to ocular infection.
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Affiliation(s)
- Cong Yu
- Key Laboratory of Functional Polymer Materials of Ministry Education, Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Yingchao Gao
- Key Laboratory of Functional Polymer Materials of Ministry Education, Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Yanlong Zhang
- Tianjin Key Laboratory of Biomedical Detection Techniques & Instruments, State Key Laboratory of Precision Measurement Technology and Instrument, School of Precision Instruments & Opto-Electronics Engineering, Tianjin University, Tianjin 300072, China
| | - Jie Wang
- Key Laboratory of Functional Polymer Materials of Ministry Education, Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Yufei Zhang
- Key Laboratory of Functional Polymer Materials of Ministry Education, Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Jie Li
- Key Laboratory of Functional Polymer Materials of Ministry Education, Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Xinxing Zhang
- Key Laboratory of Functional Polymer Materials of Ministry Education, Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Zhongming Wu
- NHC Key Laboratory of Hormones and Development, Tianjin Key Laboratory of Metabolic Diseases, Chu Hsien-I Memorial Hospital & Tianjin Institute of Endocrinology, Tianjin Medical University, Tianjin 300134, China
| | - Xinge Zhang
- Key Laboratory of Functional Polymer Materials of Ministry Education, Institute of Polymer Chemistry, College of Chemistry, Nankai University, Tianjin 300071, China
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5
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Shahriary A, Sabzevari M, Jadidi K, Yazdani F, Aghamollaei H. The Role of Inflammatory Cytokines in Neovascularization of Chemical Ocular Injury. Ocul Immunol Inflamm 2021; 30:1149-1161. [PMID: 33734925 DOI: 10.1080/09273948.2020.1870148] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Aim: Chemical injuries can potentially lead to the necrosis anterior segment of the eye, and cornea in particular. Inflammatory cytokines are the first factors produced after chemical ocular injuries. Inflammation via promoting the angiogenesis factor tries to implement the wound healing mechanism in the epithelial and stromal layer of the cornea. Methods: Narrative review.Results: In our review, we described the patterns of chemical injuries in the cornea and their molecular mechanisms associated with the expression of inflammatory cytokines. Moreover, the effects of inflammation signals on angiogenesis factors and CNV were explained. Conclusion: The contribution of inflammation and angiogenesis causes de novo formation of blood vessels that is known as the corneal neovascularization (CNV). The new vascularity interrupts cornea clarity and visual acuity. Inflammation also depleted the Limbal stem cells (LSCs) in the limbus causing the failure of normal corneal epithelial healing and conjunctivalization of the cornea.
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Affiliation(s)
- Alireza Shahriary
- Chemical Injuries Research Center, Systems Biology and Poisonings Institute, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Milad Sabzevari
- Chemical Injuries Research Center, Systems Biology and Poisonings Institute, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Khosrow Jadidi
- Vision Health Research Center, Semnan University of Medical Sciences, Semnan, Iran
| | - Farshad Yazdani
- Cellular and Molecular Research Center, Basic Health Sciences Institute, Shahrekord University of Medical Sciences, Shahrekord, Iran
| | - Hossein Aghamollaei
- Chemical Injuries Research Center, Systems Biology and Poisonings Institute, Baqiyatallah University of Medical Sciences, Tehran, Iran
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6
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Zhang Y, An Y, He X, Zhang D, He W. Esculetin protects human corneal epithelial cells from oxidative stress through Nrf-2 signaling pathway. Exp Eye Res 2020; 202:108360. [PMID: 33220236 DOI: 10.1016/j.exer.2020.108360] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Revised: 10/18/2020] [Accepted: 11/10/2020] [Indexed: 12/27/2022]
Abstract
Dry eye formation often originates from oxidative damage to the ocular surface, which can be caused by external environment or internal pathologic factors. Esculetin (6, 7-dihydroxycoumarin) is a natural product found in many plants, and has been reported to have multiple pharmacological activities. The objective of our present study is to investigate if esculetin could protect the corneal epithelial cells from oxidative damages and its underlying antioxidant molecular mechanisms. Our experimental results demonstrated that pretreatment with esculetin markedly increased the cell viability while decreased the apoptosis in H2O2-treated human corneal epithelial (HCE) cells, by regulating Bcl-2, Bax and caspase-3 protein expressions and by altering the imbalance of activities of intracellular reactive oxygen species (ROS) and superoxide dismutase (SOD). Our data revealed that esculetin played an antioxidant role not only through its antioxidant activity, but also by highly inducing Nrf-2 translocation to the nucleus, which in turn, enhanced Nrf2 signaling regulated antioxidant genes (HO-1, NQO1, GCLM, SOD1 and SOD2) mRNA expression levels in H2O2-treated HCE cells. In the present study, the protective effects of esculetin on the corneal epithelium were also confirmed by a murine desiccating stress induced dry eye model in vivo. These data illustrated, for the first time, that esculetin may have the ability to protect human corneal epithelial cells from oxidative damages through its scavenging of free radical properties and through the activation of Nrf2 signaling.
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Affiliation(s)
- Yingjun Zhang
- The School of Pharmacy, He University, Shenyang, 110163, China
| | - Yuanlong An
- The School of Pharmacy, He University, Shenyang, 110163, China
| | - Xiangdong He
- The School of Pharmacy, He University, Shenyang, 110163, China; Shenyang Industrial Technology Institute of Ophthalmology, Shenyang, 110163, China
| | - Donglei Zhang
- The School of Pharmacy, He University, Shenyang, 110163, China.
| | - Wei He
- The School of Pharmacy, He University, Shenyang, 110163, China; Shenyang Industrial Technology Institute of Ophthalmology, Shenyang, 110163, China.
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7
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García-Onrubia L, Valentín-Bravo FJ, Coco-Martin RM, González-Sarmiento R, Pastor JC, Usategui-Martín R, Pastor-Idoate S. Matrix Metalloproteinases in Age-Related Macular Degeneration (AMD). Int J Mol Sci 2020; 21:ijms21165934. [PMID: 32824762 PMCID: PMC7460693 DOI: 10.3390/ijms21165934] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Revised: 08/11/2020] [Accepted: 08/12/2020] [Indexed: 12/13/2022] Open
Abstract
Age-related macular degeneration (AMD) is a complex, multifactorial and progressive retinal disease affecting millions of people worldwide. In developed countries, it is the leading cause of vision loss and legal blindness among the elderly. Although the pathogenesis of AMD is still barely understood, recent studies have reported that disorders in the regulation of the extracellular matrix (ECM) play an important role in its etiopathogenesis. The dynamic metabolism of the ECM is closely regulated by matrix metalloproteinases (MMPs) and the tissue inhibitors of metalloproteinases (TIMPs). The present review focuses on the crucial processes that occur at the level of the Bruch’s membrane, with special emphasis on MMPs, TIMPs, and the polymorphisms associated with increased susceptibility to AMD development. A systematic literature search was performed, covering the years 1990–2020, using the following keywords: AMD, extracellular matrix, Bruch’s membrane, MMPs, TIMPs, and MMPs polymorphisms in AMD. In both early and advanced AMD, the pathological dynamic changes of ECM structural components are caused by the dysfunction of specific regulators and by the influence of other regulatory systems connected with both genetic and environmental factors. Better insight into the pathological role of MMP/TIMP complexes may lead to the development of new strategies for AMD treatment and prevention.
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Affiliation(s)
- Luis García-Onrubia
- Clinical University Hospital of Valladolid, Av. Ramón y Cajal, 3, 47003 Valladolid, Spain; (L.G.-O.); (F.J.V.-B.); (J.C.P.)
| | - Fco. Javier Valentín-Bravo
- Clinical University Hospital of Valladolid, Av. Ramón y Cajal, 3, 47003 Valladolid, Spain; (L.G.-O.); (F.J.V.-B.); (J.C.P.)
| | - Rosa M. Coco-Martin
- Institute of Applied Ophthalmobiology (IOBA), University of Valladolid, 47011 Valladolid, Spain;
- Cooperative Health Network for Research in Ophthalmology (Oftared), National Institute of Health Carlos III, ISCIII, 28040 Madrid, Spain
| | - Rogelio González-Sarmiento
- Institute of Biomedical Research of Salamanca (IBSAL), 37007 Salamanca, Spain;
- Institute of Molecular and Cellular Biology of Cancer (IBMCC), University of Salamanca—CSIC, 37007 Salamanca, Spain
| | - J. Carlos Pastor
- Clinical University Hospital of Valladolid, Av. Ramón y Cajal, 3, 47003 Valladolid, Spain; (L.G.-O.); (F.J.V.-B.); (J.C.P.)
- Institute of Applied Ophthalmobiology (IOBA), University of Valladolid, 47011 Valladolid, Spain;
- Cooperative Health Network for Research in Ophthalmology (Oftared), National Institute of Health Carlos III, ISCIII, 28040 Madrid, Spain
| | - Ricardo Usategui-Martín
- Institute of Applied Ophthalmobiology (IOBA), University of Valladolid, 47011 Valladolid, Spain;
- Correspondence: (R.U.-M.); (S.P.-I.)
| | - Salvador Pastor-Idoate
- Clinical University Hospital of Valladolid, Av. Ramón y Cajal, 3, 47003 Valladolid, Spain; (L.G.-O.); (F.J.V.-B.); (J.C.P.)
- Institute of Applied Ophthalmobiology (IOBA), University of Valladolid, 47011 Valladolid, Spain;
- Cooperative Health Network for Research in Ophthalmology (Oftared), National Institute of Health Carlos III, ISCIII, 28040 Madrid, Spain
- Correspondence: (R.U.-M.); (S.P.-I.)
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8
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Wolf M, Clay SM, Oldenburg CE, Rose-Nussbaumer J, Hwang DG, Chan MF. Overexpression of MMPs in Corneas Requiring Penetrating and Deep Anterior Lamellar Keratoplasty. Invest Ophthalmol Vis Sci 2019; 60:1734-1747. [PMID: 31022731 PMCID: PMC6485316 DOI: 10.1167/iovs.18-25961] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
Purpose Matrix metalloproteinases (MMPs) comprise a family of zinc-dependent endopeptidases involved in wound healing processes, including neovascularization and fibrosis. We assessed MMP protein expression levels in diseased corneas of patients requiring penetrating and deep anterior lamellar keratoplasty. The purpose of this study was to test the hypothesis that upregulation of MMPs in diseased corneas is positively associated with clinical levels of corneal neovascularization and fibrosis. Methods Protein expression levels of nine individual MMPs were quantified simultaneously in human corneal lysates by using the Bio-Plex Pro Human MMP 9-Plex Panel and the MAGPIX technology. Measurements of MMP1, MMP2, MMP3, MMP7, MMP8, MMP9, MMP10, MMP12, and MMP13 were performed on diseased specimens from 21 patients undergoing corneal transplantation (17 for penetrating keratoplasty and 4 for deep anterior lamellar keratoplasty) and 6 normal control corneas. Results Luminex-based expression analysis revealed a significant overexpression of four of the nine MMPs tested (MMP2, MMP8, MMP12, and MMP13) in patient samples compared to control. Significant overexpression of MMP1, MMP2, MMP8, MMP12, and MMP13 was observed in diseased corneas with neovascularization compared with diseased corneas without neovascularization. Overexpression of MMP1, MMP2, MMP8, MMP12, and MMP13 also corresponded with the levels of corneal fibrosis. Finally, reduced expression of MMP3 was detected in keratoconus patients. Conclusions Multiple MMPs are expressed in the corneas of patients with chronic disease requiring keratoplasty even when the pathologic process appears to be clinically inactive. In particular, the expression of several MMPs (MMP2, MMP8, MMP12, and MMP13) is positively associated with increased levels corneal fibrosis and neovascularization.
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Affiliation(s)
- Marie Wolf
- Department of Ophthalmology, University of California, San Francisco, California, United States
| | - Selene M Clay
- Department of Ophthalmology, University of California, San Francisco, California, United States
| | - Catherine E Oldenburg
- Department of Ophthalmology, University of California, San Francisco, California, United States.,Francis I. Proctor Foundation, University of California, San Francisco, California, United States
| | - Jennifer Rose-Nussbaumer
- Department of Ophthalmology, University of California, San Francisco, California, United States.,Francis I. Proctor Foundation, University of California, San Francisco, California, United States
| | - David G Hwang
- Department of Ophthalmology, University of California, San Francisco, California, United States.,Francis I. Proctor Foundation, University of California, San Francisco, California, United States
| | - Matilda F Chan
- Department of Ophthalmology, University of California, San Francisco, California, United States.,Francis I. Proctor Foundation, University of California, San Francisco, California, United States
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9
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Chen J, Li F, Xu Y, Zhang W, Hu Y, Fu Y, Xu W, Ge S, Fan X, Lu L. Cholesterol modification of SDF-1-specific siRNA enables therapeutic targeting of angiogenesis through Akt pathway inhibition. Exp Eye Res 2019; 184:64-71. [PMID: 30898556 DOI: 10.1016/j.exer.2019.03.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Revised: 03/05/2019] [Accepted: 03/11/2019] [Indexed: 12/13/2022]
Abstract
Neovascularization during ocular tissue repair can cause severe visual loss in the optical axis and is therefore an issue of considerable concern to ophthalmologists. Here, we introduced a cholesterol-modified siRNA delivery system targeting stromal cell-derived factor 1 (SDF-1) to treat ocular angiogenesis in vivo. SDF-1 expression was analyzed in rat endothelial progenitor cells (EPCs) and bone marrow mesenchymal stem cells (BMSCs) using quantitative PCR (qPCR). Migration ability of BMSC and HUVEC were assessed through transwell assay. The proliferation effect of chol-siSDF1 on HUVEC was measured by colony formation assay. In vivo anti-angiogenic effects of chol-siSDF1 were tested in a cornea alkali burn model and the area of cornea neovascularization was measured using computer-imaging analysis system. Then phosphorylated Akt and total Akt protein levels were measured through western blot. Results turned out that rat EPCs and BMSCs showed high SDF-1 mRNA expression, which can be down-regulated by using chol-siSDF-1. Chol-siSDF-1 could significantly inhibit migration of BMSC and HUVEC. In addition, chol-siSDF1 also could inhibit HUVEC proliferation and exert a significant anti-angiogenic effect in corneal alkali burn model. As for the mechanism, chol-siSDF1 may inhibit the neovascularization, proliferation and metastasis through inhibiting the Akt signaling pathway. Thus, cholesterol modification of siRNA targeting SDF-1 displays an effective inhibition of migration and angiogenesis, with a much longer duration of inhibition effect.
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Affiliation(s)
- Junzhao Chen
- Department of Ophthalmology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, PR China; Shanghai Key Laboratory of Orbital Diseases and Ocular Oncology, Shanghai, PR China
| | - Fang Li
- Department of Ophthalmology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, PR China; Shanghai Key Laboratory of Orbital Diseases and Ocular Oncology, Shanghai, PR China
| | - Yangfan Xu
- Department of Ophthalmology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, PR China; Shanghai Key Laboratory of Orbital Diseases and Ocular Oncology, Shanghai, PR China
| | - Weijie Zhang
- Department of Ophthalmology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, PR China; Shanghai Key Laboratory of Orbital Diseases and Ocular Oncology, Shanghai, PR China
| | - Yang Hu
- Department of Ophthalmology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, PR China; Shanghai Key Laboratory of Orbital Diseases and Ocular Oncology, Shanghai, PR China
| | - Yao Fu
- Department of Ophthalmology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, PR China; Shanghai Key Laboratory of Orbital Diseases and Ocular Oncology, Shanghai, PR China
| | - Wei Xu
- Department of Ophthalmology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, PR China
| | - Shengfang Ge
- Department of Ophthalmology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, PR China; Shanghai Key Laboratory of Orbital Diseases and Ocular Oncology, Shanghai, PR China.
| | - Xianqun Fan
- Department of Ophthalmology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, PR China; Shanghai Key Laboratory of Orbital Diseases and Ocular Oncology, Shanghai, PR China.
| | - Linna Lu
- Department of Ophthalmology, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, PR China; Shanghai Key Laboratory of Orbital Diseases and Ocular Oncology, Shanghai, PR China.
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10
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Chen H, Li Y, Gu J, Yin L, Bian F, Su L, Hong Y, Deng Y, Chi W. TLR4-MyD88 pathway promotes the imbalanced activation of NLRP3/NLRP6 via caspase-8 stimulation after alkali burn injury. Exp Eye Res 2018; 176:59-68. [PMID: 30008389 DOI: 10.1016/j.exer.2018.07.001] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2017] [Revised: 04/12/2018] [Accepted: 07/01/2018] [Indexed: 01/17/2023]
Abstract
Alkali burn (AB) is one of the most serious ocular traumas in the world, characterized by extreme ocular surface disorders, critical secondary dry eye and irreversible vision loss. The exact mechanisms involved are unknown. Innate immunity, including the involvement of Toll-like receptors (TLRs) and NOD-like receptors (NLRs), is believed to participate in the pathogenesis of the epithelia, but the exact mechanisms by which TLRs transduce signals to NLRs and downstream molecules to initiate innate immunity remain poorly defined. In this present study, we used murine models of AB and AB concomitant desiccating stress (DS) to investigate the potential functions and mechanisms of TLR4 in regulating NLRP3 and NLRP6 during AB injury and secondary dry eye. We demonstrated that AB injury induced activation of the TLR4-MyD88 pathway, leading to imbalanced NLRP3 and NLRP6 via the activation of caspase-8 signaling. DS worsened ocular surface disorders post-AB injury by magnifying this phenomenon. Caspase-8 signaling promoted NLRP3 upregulation via the nuclear factor (NF)-κB pathway, while NLRP6 suppressed NF-κB activation. Our findings also revealed that TLR4-MyD88 knockout can alleviate AB-induced or DS-worsened ocular surface disorders, shedding light on the potential therapeutic strategies in the future for AB injury. Taken together, our findings demonstrate that AB promotes the TLR4-MyD88-caspase-8 axis to cause imbalanced NLRP3/NLRP6, and DS exacerbates ocular surface damage via magnifying this imbalance.
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Affiliation(s)
- Hui Chen
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou 510060, China
| | - Yonghao Li
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou 510060, China
| | - Jianjun Gu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou 510060, China
| | - Lin Yin
- Department of Information, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou 510630, China
| | - Fang Bian
- Ocular Surface Center, Cullen Eye Institute, Department of Ophthalmology, Baylor College of Medicine, Houston, TX, USA
| | - Lishi Su
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou 510060, China
| | - Yanhua Hong
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou 510060, China
| | - Yang Deng
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou 510060, China
| | - Wei Chi
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou 510060, China.
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Sulaiman RS, Kadmiel M, Cidlowski JA. Glucocorticoid receptor signaling in the eye. Steroids 2018; 133:60-66. [PMID: 29129720 PMCID: PMC5875721 DOI: 10.1016/j.steroids.2017.11.002] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/21/2017] [Revised: 10/30/2017] [Accepted: 11/06/2017] [Indexed: 02/01/2023]
Abstract
Glucocorticoids (GCs) are essential steroid hormones that regulate numerous metabolic and homeostatic functions in almost all physiological systems. Synthetic glucocorticoids are among the most commonly prescribed drugs for the treatment of various conditions including autoimmune, allergic and inflammatory diseases. Glucocorticoids are mainly used for their potent anti-inflammatory and immunosuppressive activities mediated through signal transduction by their nuclear receptor, the glucocorticoid receptor (GR). Emerging evidence showing that diverse physiological and therapeutic actions of glucocorticoids are tissue-, cell-, and sex-specific, suggests more complex actions of glucocorticoids than previously anticipated. While several synthetic glucocorticoids are widely used in the ophthalmology clinic for the treatment of several ocular diseases, little is yet known about the mechanism of glucocorticoid signaling in different layers of the eye. GR has been shown to be expressed in different cell types of the eye such as cornea, lens, and retina, suggesting an important role of GR signaling in the physiology of these ocular tissues. In this review, we provide an update on the recent findings from in vitro and in vivo studies reported in the last 5 years that aim at understanding the role of GR signaling specifically in the eye. Advances in studying the physiological effects of glucocorticoids in the eye are vital for the elaboration of optimized and targeted GC therapies with potent anti-inflammatory potential while minimizing adverse effects.
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Affiliation(s)
- Rania S Sulaiman
- Laboratory of Signal Transduction, National Institute of Environmental Health Sciences, National Institute of Health, Department of Health and Human Services, Research Triangle Park, NC, USA
| | - Mahita Kadmiel
- Laboratory of Signal Transduction, National Institute of Environmental Health Sciences, National Institute of Health, Department of Health and Human Services, Research Triangle Park, NC, USA
| | - John A Cidlowski
- Laboratory of Signal Transduction, National Institute of Environmental Health Sciences, National Institute of Health, Department of Health and Human Services, Research Triangle Park, NC, USA.
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12
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Pan H, Zheng Z. The role and function of matrix metalloproteinase-8 in rhegmatogenous retinal detachment. INTERNATIONAL JOURNAL OF CLINICAL AND EXPERIMENTAL PATHOLOGY 2017; 10:7325-7332. [PMID: 31966572 PMCID: PMC6965224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 09/07/2016] [Accepted: 11/18/2016] [Indexed: 06/10/2023]
Abstract
Rhegmatogenous retinal detachment (RRD) is one blinding disease, and has pathological features correlated with migration of retinal pigment epithelium (RPE) cells to viscous body. Matrix metalloproteinase-8 (MMP-8) participates in eye diseases including xerophthalmia and retinal disease. Its role in RRD, however, has not been illustrated with the functional mechanism. RPE cells from RRD model mice and normal mice were separated and cultured. MMP-8 expression plasmid was transfected into RPE cell in model group. Real time PCR and Western blot were employed to test expression level of MMP-8, whilst MTT method was used to test proliferation activity of RPE cells. Caspase 3 activity was quantified by test kit. Transwell migration assay was adopted to measure invasion ability of RPE cells. ELISA method was used to test expression level of inflammatory factors interleukin-1β (IL-1β) and tumor necrosis factor-α (TNF-α). MMP-8 expression level was significantly decreased in RPE cells of RRD group, which also had enhanced cell proliferation and migration, accompanied with higher IL-1β and TNF-α levels (P<0.05 compared to control group). After MMP-8 transfection and over-expression, RPE cell proliferation and migration were inhibited, along with higher Caspase 3 activity, plus lower IL-1β and TNF-α expression (P<0.05 compared to model group). RRD caused decreased expression of MMP-8 in RPE cells. MMP-8 can facilitate RPE cells proliferation and migration via modulating cell apoptotic activity and secretion of inflammatory factor, thus participating in RRD pathogenesis and progression.
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Affiliation(s)
- Hong Pan
- Department of Ophthalmology, Shandong Provincial Hospital Affiliated to Shandong UniversityJinan 250021, Shandong, People’s Republic of China
| | - Zhiming Zheng
- Department of Neurosurgery, Shandong Provincial Hospital Affiliated to Shandong UniversityJinan 250021, Shandong, People’s Republic of China
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