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Qin Y, Liu T, Zhang Z, Xing S, Gong L, Ni Y. Scleral remodeling in early adulthood: the role of FGF-2. Sci Rep 2023; 13:20779. [PMID: 38012225 PMCID: PMC10682392 DOI: 10.1038/s41598-023-48264-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2023] [Accepted: 11/24/2023] [Indexed: 11/29/2023] Open
Abstract
Emmetropization, a natural process of ocular elongation, is closely associated with scleral remodeling. The Fibroblast growth factor-2 (FGF-2) was reported involved in scleral remodeling in myopia models. Herein, we aimed to investigate the role of scleral fibroblast-to-myofibroblast differentiation and FGF-2 in scleral remodeling during maturation. Our findings revealed that the posterior scleral fibroblasts (SFs) from mature guinea pigs exhibit increased stiffness compared to those from young guinea pigs. Moreover, mature SFs displayed decreased cell proliferation but increased levels of α-SMA, matrix metalloproteinase 2 (MMP2), and collagen 1, when compared to young SFs. Additionally, the mRNA expression of scleral Fgf-2, Fgf receptor 1 (Fgfr1), Fgfr2, Fgfr3, and Fgfr4 was increased in mature SFs. Notably, exogenous FGF-2 showed increased cell proliferation and led to decreased expression of α-SMA, MMP2, and collagen 1 in mature SFs. Overall, our findings highlight the influence of maturation on SFs from posterior scleral shells, resulting in increased stiffness and the manifestation of fibroblast-to-myofibroblast differentiation during development. Exogenous FGF-2 increased cell proliferation and reversed the age-related fibroblast-to-myofibroblast differentiation, suggesting a potential role of FGF-2 in regulating scleral remodeling.
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Affiliation(s)
- Yingyan Qin
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, 54S Xianlie Road, Guangzhou, 510060, China
| | - Taixiang Liu
- Guizhou Ophthalmic Hospital, The Affiliated Hospital of Zunyi Medical University, Zunyi, 563003, China
| | - Zhaotian Zhang
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, 54S Xianlie Road, Guangzhou, 510060, China
| | - Shuwen Xing
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, 54S Xianlie Road, Guangzhou, 510060, China
| | - Li Gong
- Instrumental Analysis and Research Center, Sun Yat-Sen University, 135W Xingang Road, Guangzhou, 510275, China.
| | - Yao Ni
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-Sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, 54S Xianlie Road, Guangzhou, 510060, China.
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Dai A, Cheng X, Wang W, Li R, Gao X, Li S, Liu T. A novel heterozygous c.733 T > G MYOC mutation associated with juvenile-onset open-angle glaucoma in a Chinese family. Eye (Lond) 2023; 37:2488-2493. [PMID: 36543942 PMCID: PMC10397252 DOI: 10.1038/s41433-022-02359-x] [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: 02/05/2022] [Revised: 11/14/2022] [Accepted: 12/05/2022] [Indexed: 12/24/2022] Open
Abstract
AIMS To detect mutations in juvenile-onset open-angle glaucoma in a Chinese family and to describe the characteristic ophthalmic phenotypes of this pedigree. METHODS There were 14 individuals in this four-generation pedigree. All living members of the family underwent comprehensive ophthalmic examinations. Five patients presented with elevated intraocular pressures. All of them shared early-onset disease, with a mean onset age of 14.4 years and continuing aggressive damage to their optic nerves. Hyperpigmentation in the trabecular meshwork and sometimes-broad iris processes were noted in this family using gonioscopy. All exons of candidate genes (MYOC, OPTN, CYP1B1) were amplified using the polymerase chain reaction, and analysed with an ABI 3700XL Genetic Analyser. RESULTS A heterozygous missense mutation in exon 3 (c.733 T > G) of the MYOC gene was found in the five JOAG patients and one 7-year-old boy with no ophthalmic manifestation of glaucoma, but it was absent in other members of the family and in the controls. This mutation resulted in a transversion of cysteine to glycine (Cys245Gly). CONCLUSIONS We concluded the novel MYOC c.733 T > G mutation found in a Chinese family with JOAG caused a severe type of JOAG exhibiting early onset, high IOP, and severe optic nerve damage. Interestingly, unlike other reported MYOC mutation families, our patients exhibited marked angle pigmentation and iris processes.
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Affiliation(s)
- Aiai Dai
- Department of Ophthalmology, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Xuan Cheng
- Senior Department of Ophthalmology, the Third Medical Center of PLA General Hospital, Beijing, China
| | - Weifeng Wang
- Department of Gastroenterology and Hepatology, Guangdong Second Provincial General Hospital, Guangdong, China
| | - Runpu Li
- Senior Department of Ophthalmology, the Third Medical Center of PLA General Hospital, Beijing, China
| | - Xuhui Gao
- Senior Department of Ophthalmology, the Third Medical Center of PLA General Hospital, Beijing, China
| | - Shuxian Li
- Senior Department of Ophthalmology, the Third Medical Center of PLA General Hospital, Beijing, China
| | - Tiecheng Liu
- Senior Department of Ophthalmology, the Third Medical Center of PLA General Hospital, Beijing, China.
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Qin G, Zhang P, Sun M, Fu W, Cai C. Comprehensive spectral libraries for various rabbit eye tissue proteomes. Sci Data 2022; 9:111. [PMID: 35351915 PMCID: PMC8964796 DOI: 10.1038/s41597-022-01241-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Accepted: 03/03/2022] [Indexed: 12/14/2022] Open
Abstract
Rabbits have been widely used for studying ocular physiology and pathology due to their relatively large eye size and similar structures with human eyes. Various rabbit ocular disease models, such as dry eye, age-related macular degeneration, and glaucoma, have been established. Despite the growing application of proteomics in vision research using rabbit ocular models, there is no spectral assay library for rabbit eye proteome publicly available. Here, we generated spectral assay libraries for rabbit eye compartments, including conjunctiva, cornea, iris, retina, sclera, vitreous humor, and tears using fractionated samples and ion mobility separation enabling deep proteome coverage. The rabbit eye spectral assay library includes 9,830 protein groups and 113,593 peptides. We present the data as a freely available community resource for proteomic studies in the vision field. Instrument data and spectral libraries are available via ProteomeXchange with identifier PXD031194. Measurement(s) | database type spectral library | Technology Type(s) | ion mobility spectrometry-mass spectrometry | Sample Characteristic - Organism | Oryctolagus cuniculus | Sample Characteristic - Environment | eye | Sample Characteristic - Location | United States of America |
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Quantitative proteomics to study aging in rabbit liver. Mech Ageing Dev 2020; 187:111227. [PMID: 32126221 DOI: 10.1016/j.mad.2020.111227] [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: 03/29/2019] [Revised: 01/24/2020] [Accepted: 02/27/2020] [Indexed: 12/23/2022]
Abstract
Aging globally effects cellular and organismal metabolism across a range of mammalian species, including humans and rabbits. Rabbits (Oryctolagus cuniculus are an attractive model system of aging due to their genetic similarity with humans and their short lifespans. This model can be used to understand metabolic changes in aging especially in major organs such as liver where we detected pronounced variations in fat metabolism, mitochondrial dysfunction, and protein degradation. Such changes in the liver are consistent across several mammalian species however in rabbits the downstream effects of these changes have not yet been explored. We have applied proteomics to study changes in the liver proteins from young, middle, and old age rabbits using a multiplexing cPILOT strategy. This resulted in the identification of 2,586 liver proteins, among which 45 proteins had significant p < 0.05) changes with aging. Seven proteins were differentially-expressed at all ages and include fatty acid binding protein, aldehyde dehydrogenase, enoyl-CoA hydratase, 3-hydroxyacyl CoA dehydrogenase, apolipoprotein C3, peroxisomal sarcosine oxidase, adhesion G-protein coupled receptor, and glutamate ionotropic receptor kinate. Insights to how alterations in metabolism affect protein expression in liver have been gained and demonstrate the utility of rabbit as a model of aging.
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Carriel V, Vizcaíno-López G, Chato-Astrain J, Durand-Herrera D, Alaminos M, Campos A, Sánchez-Montesinos I, Campos F. Scleral surgical repair through the use of nanostructured fibrin/agarose-based films in rabbits. Exp Eye Res 2019; 186:107717. [PMID: 31265829 DOI: 10.1016/j.exer.2019.107717] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2019] [Revised: 06/19/2019] [Accepted: 06/28/2019] [Indexed: 12/15/2022]
Abstract
Scleral defects can result as a consequence of trauma, infectious diseases or cancer and surgical repair with allogeneic scleral grafts can be required. However, this method has limitations and novel alternatives are needed. Here, the efficacy of acellular nanostructured fibrin-agarose hydrogel-based substitutes (NFAH) in the repair of scleral defects in rabbits was studied. For this, scleral defects of 5-mm diameter were made on 18 adult-male New Zealand rabbits and repaired with acellular NFAH, NFAH crosslinked with genipin (NFAH-GP) or glutaraldehyde (NFAH-GA), allogeneic scleral grafts as control (C-CTR) or not repaired (negative control N-CTR) (n = 3 each). Macroscopic and histological analyses were performed after 40-days. Macroscopy confirmed the repair of all defects in a comparable manner than the C-CTR. Histology showed no degradation nor integration in C-CTR while NFAH-GP and NFAH-GA biomaterials were encapsulated by connective and inflammatory tissues with partial biodegradation. The NFAH were fully biodegraded and replaced by a loose connective tissue and sclera covering the defects. This in vivo study demonstrated that the NFAH are a promising biocompatible and pro-regenerative alternative to the use of allogeneic cadaveric grafts. However, large defects and long-term studies are needed to demonstrate the potential clinical usefulness of these substitutes.
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Affiliation(s)
- Víctor Carriel
- Department of Histology & Tissue Engineering Group, Faculty of Medicine, University of Granada, Spain; Instituto de Investigación Biosanitaria Ibs.GRANADA, Spain.
| | - Gerson Vizcaíno-López
- Doctoral Program in Biomedicine, University of Granada, Spain; Department of Histology, Autonomous University of Santo Domingo, Dominican Republic
| | - Jesús Chato-Astrain
- Department of Histology & Tissue Engineering Group, Faculty of Medicine, University of Granada, Spain
| | - Daniel Durand-Herrera
- Department of Histology & Tissue Engineering Group, Faculty of Medicine, University of Granada, Spain
| | - Miguel Alaminos
- Department of Histology & Tissue Engineering Group, Faculty of Medicine, University of Granada, Spain; Instituto de Investigación Biosanitaria Ibs.GRANADA, Spain
| | - Antonio Campos
- Department of Histology & Tissue Engineering Group, Faculty of Medicine, University of Granada, Spain; Instituto de Investigación Biosanitaria Ibs.GRANADA, Spain
| | - Indalecio Sánchez-Montesinos
- Instituto de Investigación Biosanitaria Ibs.GRANADA, Spain; Department of Human Anatomy & Embryology, Faculty of Medicine, University of Granada, Spain.
| | - Fernando Campos
- Department of Histology & Tissue Engineering Group, Faculty of Medicine, University of Granada, Spain; Instituto de Investigación Biosanitaria Ibs.GRANADA, Spain
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Mohanty V, Subbannayya Y, Najar MA, Pinto SM, Kasaragod S, Karuppiah H, Sreeramulu B, Singh KK, Dalal S, Manikkoth S, Arunachalam C, Prasad TSK, Murthy KR. Proteomics and Visual Health Research: Proteome of the Human Sclera Using High-Resolution Mass Spectrometry. ACTA ACUST UNITED AC 2019; 23:98-110. [DOI: 10.1089/omi.2018.0185] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Varshasnata Mohanty
- Center for Systems Biology and Molecular Medicine, Yenepoya Research Centre, Yenepoya (Deemed to be University), Mangalore, India
| | - Yashwanth Subbannayya
- Center for Systems Biology and Molecular Medicine, Yenepoya Research Centre, Yenepoya (Deemed to be University), Mangalore, India
| | - Mohammed Altaf Najar
- Center for Systems Biology and Molecular Medicine, Yenepoya Research Centre, Yenepoya (Deemed to be University), Mangalore, India
| | - Sneha M. Pinto
- Center for Systems Biology and Molecular Medicine, Yenepoya Research Centre, Yenepoya (Deemed to be University), Mangalore, India
| | - Sandeep Kasaragod
- Center for Systems Biology and Molecular Medicine, Yenepoya Research Centre, Yenepoya (Deemed to be University), Mangalore, India
| | - Hilda Karuppiah
- Department of Zoology, University of Madras, Guindy Campus, Chennai, India
| | | | - Kunal Kumar Singh
- Department of Clinical Biochemistry, Pondicherry University, Puducherry, India
| | - Sunita Dalal
- Department of Biotechnology, Kurukshetra University, Kurukshetra, India
| | - Shyamjith Manikkoth
- Department of Pharmacology, Yenepoya Medical College, Yenepoya (Deemed to be University), Mangalore, India
| | - Cynthia Arunachalam
- Department of Ophthalmology, Yenepoya Medical College, Yenepoya (Deemed to be University), Mangalore, India
| | - Thottethodi Subrahmanya Keshava Prasad
- Center for Systems Biology and Molecular Medicine, Yenepoya Research Centre, Yenepoya (Deemed to be University), Mangalore, India
- Institute of Bioinformatics, International Tech Park, Bangalore, India
| | - Krishna R. Murthy
- Institute of Bioinformatics, International Tech Park, Bangalore, India
- Vittala International Institute of Ophthalmology, Bangalore, India
- Manipal Academy of Higher Education, Manipal, India
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