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Lulli M, Tartaro R, Papucci L, Magnelli L, Kaur IP, Caporossi T, Rizzo S, Mannini A, Giansanti F, Schiavone N. Effects of a human amniotic membrane extract on ARPE-19 cells. Mol Biol Rep 2024; 51:746. [PMID: 38874663 PMCID: PMC11178654 DOI: 10.1007/s11033-024-09647-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2023] [Accepted: 05/16/2024] [Indexed: 06/15/2024]
Abstract
BACKGROUND Human Amniotic Membrane (hAM) is endowed with several biological activities and might be considered an optimal tool in surgical treatment for different ophthalmic pathologies. We pioneered the surgical use of hAM to treat retinal pathologies such as macular holes, tears, and retinal detachments, and to overcome photoreceptor damage in age-related macular degeneration. Although hAM contributed to improved outcomes, the mechanisms of its effects are not yet fully understood. The characterization and explanation of the effects of hAM would allow the adoption of this new natural product in different retinal pathologies, operative contexts, and hAM formulations. At this end, we studied the properties of a hAM extract (hAME) on the ARPE-19 cells. METHODS AND RESULTS A non-denaturing sonication-based technique was developed to obtain a suitable hAME. Viability, proliferation, apoptosis, oxidative stress, and epithelial-mesenchymal transition (EMT) were studied in hAME-treated ARPE-19 cells. The hAME was able to increase ARPE-19 cell viability even in the presence of oxidative stress (H2O2, TBHP). Moreover, hAME prevented the expression of EMT features, such as EMT-related proteins, fibrotic foci formation, and migration induced by different cytokines. CONCLUSIONS Our results demonstrate that the hAME retains most of the properties observed in the whole tissue by others. The hAME, other than providing a manageable research tool, could represent a cost-effective and abundant drug to treat retinal pathologies in the future.
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Affiliation(s)
- Matteo Lulli
- Department of Experimental and Clinical Biomedical Sciences 'Mario Serio', University of Florence, Florence, Italy
| | - Ruggero Tartaro
- Department of NEUROFARBA, Ophthalmology, University of Florence, Careggi, Florence, Italy
| | - Laura Papucci
- Department of Experimental and Clinical Biomedical Sciences 'Mario Serio', University of Florence, Florence, Italy
| | - Lucia Magnelli
- Department of Experimental and Clinical Biomedical Sciences 'Mario Serio', University of Florence, Florence, Italy
| | - Indu Pal Kaur
- UGC-Centre of Advanced Study, University Institute of Pharmaceutical Sciences, Panjab University, Chandigarh, India
| | - Tomaso Caporossi
- Vitreoretinal Surgery Unit, Isola Tiberina Gemelli Isola Hospital, Rome, Italy
- Catholic University Sacro Cuore, Rome, Italy
| | - Stanislao Rizzo
- Department of Ophthalmology, Catholic University of Sacred-Heart Foundation "Policlinico Universitario A. Gemelli" IRCCS, Rome, Italy
| | - Antonella Mannini
- Department of Experimental and Clinical Medicine - Internal Medicine Section, University of Florence, Florence, Italy.
| | - Fabrizio Giansanti
- Department of NEUROFARBA, Ophthalmology, University of Florence, Careggi, Florence, Italy
| | - Nicola Schiavone
- Department of Experimental and Clinical Biomedical Sciences 'Mario Serio', University of Florence, Florence, Italy
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Luo S, Xu H, Yang L, Gong X, Shen J, Chen X, Wu Z. Quantitative proteomics analysis of human vitreous in rhegmatogenous retinal detachment associated with choroidal detachment by data-independent acquisition mass spectrometry. Mol Cell Biochem 2022; 477:1849-1863. [PMID: 35332395 DOI: 10.1007/s11010-022-04409-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Accepted: 03/10/2022] [Indexed: 10/18/2022]
Abstract
The prognosis of rhegmatogenous retinal detachment (RRD) with choroidal detachment (RRDCD) is often poor and complicated. This study focused on the identification of the characteristic proteins and signal pathways associated with the etiology of RRDCD and to provide guidance for diagnosis and treatment of RRDCD. In this study, vitreous humor samples were obtained from 16 RRDCD patients, 14 with RRD, 12 with idiopathic epiretinal macular membrane (IEMM), and 5 healthy controls from donated corpse eyes. Data-independent acquisition mass spectrometry and bioinformatics analysis were employed to identify differentially expressed proteins (DEPs). In the vitreous humor, 14,842 peptides were identified. Patients with RRDCD had 249 DEPs (93 upregulated and 156 downregulated), with 89 in patients with RRD and 61 in patients with IEMM. Enrichment analysis of the GO and Kyoto Encyclopedia of Genes and Genomes DEP databases indicated functional clusters related to inflammation and immunity, protein degradation and absorption, cell adhesion molecules (CAMs), the hedgehog signaling pathway, and lipid metabolism. Weighted gene co-expression network analysis showed that DEPs with positive co-expression of RRDCD participated in immune-related pathways led by the complement and coagulation cascade, whereas DEPs with negative co-expression of RRDCD participated in protein degradation and absorption, CAMs, and the hedgehog signaling pathway. In summary, our study provides important clues and the theoretical basis for exploring the pathogenesis, progression, and prognosis of ocular fundus disease.
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Affiliation(s)
- Shasha Luo
- Department of Ophthalmology, Nanjing Medical University Affiliated Wuxi Second Hospital, 68 Zhongshan Road, Wuxi, 214002, Jiangsu Province, People's Republic of China.,Department of Ophthalmology, Affiliated Wuxi Clinical College of Nantong University, Wuxi, Jiangsu Province, People's Republic of China
| | - Huiyan Xu
- Department of Ophthalmology, Nanjing Medical University Affiliated Wuxi Second Hospital, 68 Zhongshan Road, Wuxi, 214002, Jiangsu Province, People's Republic of China.,Department of Ophthalmology, Affiliated Wuxi Clinical College of Nantong University, Wuxi, Jiangsu Province, People's Republic of China
| | - Lufei Yang
- Department of Ophthalmology, Nanjing Medical University Affiliated Wuxi Second Hospital, 68 Zhongshan Road, Wuxi, 214002, Jiangsu Province, People's Republic of China
| | - Xuechun Gong
- Department of Ophthalmology, Nanjing Medical University Affiliated Wuxi Second Hospital, 68 Zhongshan Road, Wuxi, 214002, Jiangsu Province, People's Republic of China
| | - Jinyan Shen
- Department of Ophthalmology, Nanjing Medical University Affiliated Wuxi Second Hospital, 68 Zhongshan Road, Wuxi, 214002, Jiangsu Province, People's Republic of China
| | - Xuan Chen
- Department of Ophthalmology, Nanjing Medical University Affiliated Wuxi Second Hospital, 68 Zhongshan Road, Wuxi, 214002, Jiangsu Province, People's Republic of China
| | - Zhifeng Wu
- Department of Ophthalmology, Nanjing Medical University Affiliated Wuxi Second Hospital, 68 Zhongshan Road, Wuxi, 214002, Jiangsu Province, People's Republic of China. .,Department of Ophthalmology, Affiliated Wuxi Clinical College of Nantong University, Wuxi, Jiangsu Province, People's Republic of China.
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Li X, Li X, He S, Zhao M. MeCP2-421-mediated RPE epithelial-mesenchymal transition and its relevance to the pathogenesis of proliferative vitreoretinopathy. J Cell Mol Med 2020; 24:9420-9427. [PMID: 32638535 PMCID: PMC7417696 DOI: 10.1111/jcmm.15602] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2020] [Accepted: 06/13/2020] [Indexed: 12/17/2022] Open
Abstract
Proliferative vitreoretinopathy (PVR) is a blinding eye disease. Epithelial‐mesenchymal transition (EMT) of RPE cells plays an important role in the pathogenesis of PVR. In the current study, we sought to investigate the role of the methyl‐CpG‐binding protein 2 (MeCP2), especially P‐MeCP2‐421 in the pathogenesis of PVR. The expressions of P‐MeCP2‐421, P‐MeCP2‐80, PPAR‐γ and the double labelling of P‐MeCP2‐421 with α‐SMA, cytokeratin, TGF‐β and PPAR‐γ in human PVR membranes were analysed by immunohistochemistry. The effect of knocking down MeCP2 using siRNA on the expressions of α‐SMA, phospho‐Smad2/3, collagen I, fibronectin and PPAR‐γ; the expression of α‐SMA stimulated by recombinant MeCP2 in ARPE‐19; and the effect of TGF‐β and 5‐AZA treatment on PPAR‐γ expression were analysed by Western blot. Chromatin immunoprecipitation was used to determine the binding of MeCP2 to TGF‐β. Our results showed that P‐MeCP2‐421 was highly expressed in PVR membranes and was double labelled with α‐SMA, cytokeratin and TGF‐β, knocking down MeCP2 inhibited the activation of Smad2/3 and the expression of collagen I and fibronectin induced by TGF‐β. TGF‐β inhibited the expression of PPAR‐γ, silence of MeCP2 by siRNA or using MeCP2 inhibitor (5‐AZA) increased the expression of PPAR‐γ. α‐SMA was up‐regulated by the treatment of recombinant MeCP2. Importantly, we found that MeCP2 bound to TGF‐β as demonstrated by Chip assay. The results suggest that MeCP2 especially P‐MeCP2‐421 may play a significant role in the pathogenesis of PVR and targeting MeCP2 may be a potential therapeutic approach for the treatment of PVR.
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Affiliation(s)
- Xiaohua Li
- Henan Provincial People's Hospital, Zhengzhou, China.,Henan Eye Hospital, Henan Eye Institute, Henan Key Laboratory of Ophthalmology and Visual Science, Zhengzhou, China.,People's Hospital of Zhengzhou University, Zhengzhou, China.,People's Hospital of Henan University, Zhengzhou, China
| | - Xue Li
- Henan Provincial People's Hospital, Zhengzhou, China.,Henan Eye Hospital, Henan Eye Institute, Henan Key Laboratory of Ophthalmology and Visual Science, Zhengzhou, China.,People's Hospital of Zhengzhou University, Zhengzhou, China.,People's Hospital of Henan University, Zhengzhou, China
| | - Shikun He
- Ophthalmology Optometry Centre, Peking University People's Hospital, Beijing Key Laboratory of Diagnosis and Therapy of Retinal and Choroid Diseases, Beijing, China.,Departments of Pathology, USC Roski Eye Institute, Keck School of Medicine, University of Southern California, Los Angeles, CA, USA
| | - Mingwei Zhao
- Ophthalmology Optometry Centre, Peking University People's Hospital, Beijing Key Laboratory of Diagnosis and Therapy of Retinal and Choroid Diseases, Beijing, China
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Bencivenga M, Decimo I, Malpeli G. A therapeutic perspective for proliferative vitreoretinopathy based on the inhibition of epithelial-mesenchymal transition by miR-194. ANNALS OF TRANSLATIONAL MEDICINE 2020; 8:525. [PMID: 32411748 PMCID: PMC7214892 DOI: 10.21037/atm.2020.03.181] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Maria Bencivenga
- Department of Surgical Sciences, Dentistry, Gynecology and Pediatrics, Section of Surgery, Section of Pathological Anatomy, University of Verona, Verona, Italy
| | - Ilaria Decimo
- Department of Medicine, Section of Pharmacology, Section of Pathological Anatomy, University of Verona, Verona, Italy
| | - Giorgio Malpeli
- Department of Surgical Sciences, Dentistry, Gynecology and Pediatrics, Section of Surgery, Section of Pathological Anatomy, University of Verona, Verona, Italy.,Department of Diagnostics and Public Health, Section of Pathological Anatomy, University of Verona, Verona, Italy
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Lyu Y, Xu W, Zhang J, Li M, Xiang Q, Li Y, Tan T, Ou Q, Zhang J, Tian H, Xu JY, Jin C, Gao F, Wang J, Li W, Rong A, Lu L, Xu GT. Protein Kinase A Inhibitor H89 Attenuates Experimental Proliferative Vitreoretinopathy. Invest Ophthalmol Vis Sci 2020; 61:1. [PMID: 32031573 PMCID: PMC7325625 DOI: 10.1167/iovs.61.2.1] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Purpose This study aimed to explore the role of the protein kinase A (PKA) pathway in proliferative vitreoretinopathy (PVR) and the effect of the PKA inhibitor H89 on experimental PVR. Methods Epiretinal membranes (ERMs) were acquired from PVR patients and analyzed by frozen-section immunofluorescence. An in vivo model was developed by intravitreal injecting rat eyes with ARPE-19 cells and platelet-rich plasma, and changes in eye structures and vision function were observed. An in vitro epithelial-mesenchymal transition (EMT) cell model was established by stimulating ARPE-19 cells with transforming growth factor (TGF)-β. Alterations in EMT-related genes and cell function were detected. Mechanistically, PKA activation and activity were explored to assess the relationship between TGF-β1 stimulation and the PKA pathway. The effect of H89 on the TGF-β-Smad2/3 pathway was detected. RNA sequencing was used to analyze gene expression profile changes after H89 treatment. Results PKA was activated in human PVR membranes. In vivo, H89 treatment protected against structural changes in the retina and prevented decreases in electroretinogram b-wave amplitudes. In vitro, H89 treatment inhibited EMT-related gene alterations and partially reversed the functions of the cells. TGF-β-induced PKA activation was blocked by H89 pretreatment. H89 did not affect the phosphorylation or nuclear translocation of regulatory Smad2/3 but increased the expression of inhibitory Smad6. Conclusions PKA pathway activation is involved in PVR pathogenesis, and the PKA inhibitor H89 can effectively inhibit PVR, both in vivo and in vitro. Furthermore, the protective effect of H89 is related to an increase in inhibitory Smad6.
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