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Liu H, Qi B, Liu G, Duan H, Li Z, Shi Z, Chen Y, Chu WK, Zhou Q, Zhang BN. RAD21 deficiency drives corneal to scleral differentiation fate switching via upregulating WNT9B. iScience 2024; 27:109875. [PMID: 38774716 PMCID: PMC11107359 DOI: 10.1016/j.isci.2024.109875] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Revised: 02/28/2024] [Accepted: 04/29/2024] [Indexed: 05/24/2024] Open
Abstract
The cornea and sclera are distinct adjacent tissues, yet their stromal cells originate from common neural crest cells (NCCs). Sclerocornea is a disease characterized by an indistinguishable boundary between the cornea and sclera. Previously, we identified a RAD21 mutation in a sclerocornea pedigree. Here, we investigated the impacts of RAD21 on NCC activities during eye development. RAD21 deficiency caused upregulation of PCDHGC3. Both RAD21 knockdown and PCDHGC3 upregulation disrupted the migration of NCCs. Transcriptome analysis indicated that WNT9B had 190.9-fold higher expression in scleral stroma than in corneal stroma. WNT9B was also significantly upregulated by both RAD21 knockdown and PCDHGC3 overexpression, and knock down of WNT9B rescued the differentiation and migration of NCCs with RAD21 deficiency. Consistently, overexpressing wnt9b in Xenopus tropicalis led to ocular developmental abnormalities. In summary, WNT9B is a determinant factor during NCC differentiation into corneal keratocytes or scleral stromal cells and is affected by RAD21 expression.
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Affiliation(s)
- Hongyan Liu
- Shandong First Medical University and Shandong Academy of Medical Sciences, Jinan, Shandong, China
- Eye Institute of Shandong First Medical University, Qingdao Eye Hospital of Shandong First Medical University, Qingdao, China
- School of Ophthalmology, Shandong First Medical University, Qingdao, China
| | - Benxiang Qi
- Eye Institute of Shandong First Medical University, Qingdao Eye Hospital of Shandong First Medical University, Qingdao, China
- School of Ophthalmology, Shandong First Medical University, Qingdao, China
- State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, Qingdao, China
| | - Guanghui Liu
- Department of Chemical Biology, School of Life Sciences, Guangdong Provincial Key Laboratory of Cell Microenvironment and Disease Research, Shenzhen Key Laboratory of Cell Microenvironment, Southern University of Science and Technology, Shenzhen, China
| | - Haoyun Duan
- Eye Institute of Shandong First Medical University, Qingdao Eye Hospital of Shandong First Medical University, Qingdao, China
- School of Ophthalmology, Shandong First Medical University, Qingdao, China
- State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, Qingdao, China
| | - Zongyi Li
- Eye Institute of Shandong First Medical University, Qingdao Eye Hospital of Shandong First Medical University, Qingdao, China
- School of Ophthalmology, Shandong First Medical University, Qingdao, China
- State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, Qingdao, China
| | - Zhaoying Shi
- Department of Chemical Biology, School of Life Sciences, Guangdong Provincial Key Laboratory of Cell Microenvironment and Disease Research, Shenzhen Key Laboratory of Cell Microenvironment, Southern University of Science and Technology, Shenzhen, China
| | - Yonglong Chen
- Department of Chemical Biology, School of Life Sciences, Guangdong Provincial Key Laboratory of Cell Microenvironment and Disease Research, Shenzhen Key Laboratory of Cell Microenvironment, Southern University of Science and Technology, Shenzhen, China
| | - Wai Kit Chu
- Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Hong Kong, China
| | - Qingjun Zhou
- Eye Institute of Shandong First Medical University, Qingdao Eye Hospital of Shandong First Medical University, Qingdao, China
- School of Ophthalmology, Shandong First Medical University, Qingdao, China
- State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, Qingdao, China
| | - Bi Ning Zhang
- Eye Institute of Shandong First Medical University, Qingdao Eye Hospital of Shandong First Medical University, Qingdao, China
- School of Ophthalmology, Shandong First Medical University, Qingdao, China
- State Key Laboratory Cultivation Base, Shandong Provincial Key Laboratory of Ophthalmology, Qingdao, China
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Greatbatch CJ, Lu Q, Hung S, Barnett AJ, Wing K, Liang H, Han X, Zhou T, Siggs OM, Mackey DA, Cook AL, Senabouth A, Liu GS, Craig JE, MacGregor S, Powell JE, Hewitt AW. High throughput functional profiling of genes at intraocular pressure loci reveals distinct networks for glaucoma. Hum Mol Genet 2024; 33:739-751. [PMID: 38272457 PMCID: PMC11031357 DOI: 10.1093/hmg/ddae003] [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: 10/15/2023] [Revised: 12/18/2023] [Accepted: 04/06/2024] [Indexed: 01/27/2024] Open
Abstract
INTRODUCTION Primary open angle glaucoma (POAG) is a leading cause of blindness globally. Characterized by progressive retinal ganglion cell degeneration, the precise pathogenesis remains unknown. Genome-wide association studies (GWAS) have uncovered many genetic variants associated with elevated intraocular pressure (IOP), one of the key risk factors for POAG. We aimed to identify genetic and morphological variation that can be attributed to trabecular meshwork cell (TMC) dysfunction and raised IOP in POAG. METHODS 62 genes across 55 loci were knocked-out in a primary human TMC line. Each knockout group, including five non-targeting control groups, underwent single-cell RNA-sequencing (scRNA-seq) for differentially-expressed gene (DEG) analysis. Multiplexed fluorescence coupled with CellProfiler image analysis allowed for single-cell morphological profiling. RESULTS Many gene knockouts invoked DEGs relating to matrix metalloproteinases and interferon-induced proteins. We have prioritized genes at four loci of interest to identify gene knockouts that may contribute to the pathogenesis of POAG, including ANGPTL2, LMX1B, CAV1, and KREMEN1. Three genetic networks of gene knockouts with similar transcriptomic profiles were identified, suggesting a synergistic function in trabecular meshwork cell physiology. TEK knockout caused significant upregulation of nuclear granularity on morphological analysis, while knockout of TRIOBP, TMCO1 and PLEKHA7 increased granularity and intensity of actin and the cell-membrane. CONCLUSION High-throughput analysis of cellular structure and function through multiplex fluorescent single-cell analysis and scRNA-seq assays enabled the direct study of genetic perturbations at the single-cell resolution. This work provides a framework for investigating the role of genes in the pathogenesis of glaucoma and heterogenous diseases with a strong genetic basis.
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Affiliation(s)
- Connor J Greatbatch
- Menzies Institute for Medical Research, University of Tasmania, 17 Liverpool Street, Hobart, Tasmania 7000, Australia
| | - Qinyi Lu
- Menzies Institute for Medical Research, University of Tasmania, 17 Liverpool Street, Hobart, Tasmania 7000, Australia
| | - Sandy Hung
- Centre for Eye Research Australia, University of Melbourne, Royal Victorian Eye and Ear Hospital, 32 Gisborne St, East Melbourne 3002, Australia
| | - Alexander J Barnett
- Menzies Institute for Medical Research, University of Tasmania, 17 Liverpool Street, Hobart, Tasmania 7000, Australia
| | - Kristof Wing
- Menzies Institute for Medical Research, University of Tasmania, 17 Liverpool Street, Hobart, Tasmania 7000, Australia
| | - Helena Liang
- Centre for Eye Research Australia, University of Melbourne, Royal Victorian Eye and Ear Hospital, 32 Gisborne St, East Melbourne 3002, Australia
| | - Xikun Han
- QIMR Berghofer Medical Research Institute, 300 Herston Rd, Herston, Brisbane 4006, Australia
| | - Tiger Zhou
- Department of Ophthalmology, Flinders University, Flinders Medical Centre, 1 Flinders Dr, Bedford Park, South Australia 5042, Australia
| | - Owen M Siggs
- Garvan Institute of Medical Research, 384 Victoria St, Darlinghurst, Sydney, NSW 2010, Australia
- School of Clinical Medicine, Faculty of Medicine and Health, Short Street, St George Hospital KOGARAH UNSW, Sydney 2217, Australia
| | - David A Mackey
- Menzies Institute for Medical Research, University of Tasmania, 17 Liverpool Street, Hobart, Tasmania 7000, Australia
- Lions Eye Institute, Centre for Vision Sciences, University of Western Australia, 2 Verdun Street Nedlands WA 6009, Australia
| | - Anthony L Cook
- Wicking Dementia Research and Education Centre, University of Tasmania, 17 Liverpool Street, Hobart, TAS 7000, Australia
| | - Anne Senabouth
- Garvan-Weizmann Centre for Cellular Genomics, Garvan Institute of Medical Research, 384 Victoria St, Darlinghurst, Sydney, NSW 2010, Australia
| | - Guei-Sheung Liu
- Menzies Institute for Medical Research, University of Tasmania, 17 Liverpool Street, Hobart, Tasmania 7000, Australia
| | - Jamie E Craig
- Department of Ophthalmology, Flinders University, Flinders Medical Centre, 1 Flinders Dr, Bedford Park, South Australia 5042, Australia
| | - Stuart MacGregor
- QIMR Berghofer Medical Research Institute, 300 Herston Rd, Herston, Brisbane 4006, Australia
| | - Joseph E Powell
- Garvan-Weizmann Centre for Cellular Genomics, Garvan Institute of Medical Research, 384 Victoria St, Darlinghurst, Sydney, NSW 2010, Australia
- UNSW Cellular Genomics Futures Institute, University of New South Wales, 384 Victoria St, Darlinghurst, Sydney, NSW 2010, Australia
| | - Alex W Hewitt
- Menzies Institute for Medical Research, University of Tasmania, 17 Liverpool Street, Hobart, Tasmania 7000, Australia
- Centre for Eye Research Australia, University of Melbourne, Royal Victorian Eye and Ear Hospital, 32 Gisborne St, East Melbourne 3002, Australia
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Wasilewicz R, Wasilewicz J, Pruszyńska-Oszmałek E, Stuper-Szablewska K, Leciejewska N, Kołodziejski PA. Genistein stimulates the viability and prevents myofibroblastic transformation in human trabecular meshwork cells stimulated by TGF-β. Exp Eye Res 2024; 240:109806. [PMID: 38272381 DOI: 10.1016/j.exer.2024.109806] [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: 09/12/2023] [Revised: 01/16/2024] [Accepted: 01/22/2024] [Indexed: 01/27/2024]
Abstract
Primary open-angle glaucoma (POAG) is the most common type of glaucoma leading to blindness. The search for ways to prevent/treat this entity is one of the main challenges of today's ophthalmology. One of such solution seems to be biologically active substances of natural origin, such as genistein (GEN), which can affect the function of isolated trabecular meshwork by the inhibition of protein tyrosine kinase. However, the role of GEN in viability as well as myofibroblastic transformation in human trabecular meshwork cells stimulated by TGF-β is unknown. Using human trabecular meshwork cells (HTMCs) we investigated the effect of genistein on cell viability and myofibroblastic transformation stimulated by TGF-β1 and TGF-β2. Using Real-Time PCR, western blot and immunofluorescence we determined the effect on the expression changes of αSMA, TIMP1, collagen 1 and 3 at mRNA and protein level. We found that genistein increases the viability of HTMCs (1, 2, 3 μg/ml; P < 0.05 and 4, 5, 10, 15, 20 μg/ml; P < 0.01). Moreover, we found that addition of 10, 15 and 20 μg/ml is able to prevent myofibroblastic transformation of HTMCs by decreasing αSMA, TIMP1, collagen 1 and 3 mRNA and protein expression (P < 0.01). Based on the obtained results, we can conclude that genistein is a potential factor that can prevent the myofibroblastic transformation of HTMCs accompanying glaucoma. Describing GEN influence on myofibroblastic transformation processes in HTMC allows us to conclude that it can be considered a potential therapeutic agent or a substance supporting treatment in patients with glaucoma.
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Affiliation(s)
| | | | - Ewa Pruszyńska-Oszmałek
- Department of Animal Physiology, Biochemistry and Biostructure, Poznan University of Life Sciences, 60-637, Poznan, Poland
| | - Kinga Stuper-Szablewska
- Faculty of Wood Technology, Department of Chemistry, Poznań University of Life Sciences, Poznań, Poland
| | - Natalia Leciejewska
- Department of Animal Physiology, Biochemistry and Biostructure, Poznan University of Life Sciences, 60-637, Poznan, Poland
| | - Paweł Antoni Kołodziejski
- Department of Animal Physiology, Biochemistry and Biostructure, Poznan University of Life Sciences, 60-637, Poznan, Poland.
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Sebbag L, Pe’er O. Role of Inflammation in Canine Primary Glaucoma. Animals (Basel) 2023; 14:110. [PMID: 38200841 PMCID: PMC10777923 DOI: 10.3390/ani14010110] [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: 11/07/2023] [Revised: 12/14/2023] [Accepted: 12/26/2023] [Indexed: 01/12/2024] Open
Abstract
Primary glaucoma is a painful, progressive, and blinding disease reported in many canine breeds, characterized by intraocular pressure (IOP) elevation in the absence of antecedent intraocular disease. Clinical observations of dogs with primary glaucoma suggest that many affected eyes develop concurrent intraocular inflammation in addition to elevated IOP. In this work, we summarize the current knowledge that relates inflammation to primary glaucoma in dogs, reviewing studies focused on genetics, physiology, histopathology, bioanalysis of ocular fluids, therapeutics, and clinical outcomes of glaucomatous patients. Through disruption of the blood-aqueous and blood-retinal barriers, pigment dispersion, and biochemical changes to the aqueous humor and tear film, the pathogenesis of canine primary glaucoma appears to involve inflammatory changes to various extents and with various consequences from the front to the back of the eye. Among others, inflammation further impacts IOP by reducing aqueous humor outflow at the level of the iridocorneal angle and accelerates vision loss by promoting neuronal degeneration. As such, the vicious cycle of ocular inflammation and IOP elevation might warrant the use of anti-inflammatory medications as a core component of the treatment regime for dogs with primary glaucoma, either therapeutically (i.e., actively glaucomatous eye) or prophylactically in the yet unaffected contralateral eye.
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Affiliation(s)
- Lionel Sebbag
- Koret School of Veterinary Medicine, The Hebrew University of Jerusalem, Rehovot 76100, Israel
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Feng P, Wang W, Xu W, Cao Q, Zhu W. Application of a Magnetic Platform in α6 Integrin-Positive iPSC-TM Purification. Bioengineering (Basel) 2023; 10:bioengineering10040410. [PMID: 37106597 PMCID: PMC10135729 DOI: 10.3390/bioengineering10040410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Accepted: 03/24/2023] [Indexed: 03/29/2023] Open
Abstract
The emergence of induced pluripotent stem cell (iPSC) technology has provided a new approach to regenerating decellularized trabecular meshwork (TM) in glaucoma. We have previously generated iPSC-derived TM (iPSC-TM) using a medium conditioned by TM cells and verified its function in tissue regeneration. Because of the heterogeneity of iPSCs and the isolated TM cells, iPSC-TM cells appear to be heterogeneous, which impedes our understanding of how the decellularized TM may be regenerated. Herein, we developed a protocol based on a magnetic-activated cell sorting (MACS) system or an immunopanning (IP) method for sorting integrin subunit alpha 6 (ITGA6)-positive iPSC-TM, an example of the iPSC-TM subpopulation. We first analyzed the purification efficiency of these two approaches by flow cytometry. In addition, we also determined cell viability by analyzing the morphologies of the purified cells. To conclude, the MACS-based purification could yield a higher ratio of ITGA6-positive iPSC-TM and maintain a relatively higher cell viability than the IP-based method, allowing for the preparation of any iPSC-TM subpopulation of interest and facilitating a better understanding of the regenerative mechanism of iPSC-based therapy.
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Affiliation(s)
- Pengchao Feng
- Department of Pharmacology, School of Pharmacy, Qingdao University, Qingdao 266021, China
| | - Wenyan Wang
- Department of Pharmacology, School of Pharmacy, Qingdao University, Qingdao 266021, China
| | - Wenhua Xu
- Institute of Regenerative Medicine and Laboratory Technology Innovation, Qingdao University, Qingdao 266021, China
| | - Qilong Cao
- Qingdao Haier Biotech Co., Ltd., Qingdao 266109, China
- Correspondence: (Q.C.); (W.Z.)
| | - Wei Zhu
- Department of Pharmacology, School of Pharmacy, Qingdao University, Qingdao 266021, China
- Advanced Innovation Center for Big Data-Based Precision Medicine, Beijing University of Aeronautics and Astronautics-Capital Medical University, Beijing 100083, China
- Correspondence: (Q.C.); (W.Z.)
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Fuellen G, Jünemann A. Gene Expression Data for Investigating Glaucoma Treatment Options and Pharmacology in the Anterior Segment, State-of-the-Art and Future Directions. Front Neurosci 2022; 16:912043. [PMID: 35757536 PMCID: PMC9213806 DOI: 10.3389/fnins.2022.912043] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2022] [Accepted: 05/20/2022] [Indexed: 11/30/2022] Open
Abstract
Glaucoma treatment options as well as its etiology are far from understood. Gene expression (transcriptomics) data of the anterior segment of the eye can help by elucidating the molecular-mechanistic underpinnings, and we present an up-to-date description and discussion of what gene expression data are publicly available, and for which purposes these can be used. We feature the few resources covering all segments of the eye, and we then specifically focus on the anterior segment, and provide an extensive list of the Gene Expression Omnibus data that may be useful. We also feature single-cell data of relevance, particularly three datasets from tissues of relevance to aqueous humor outflow. We describe how the data have been used by researchers, by following up resource citations and data re-analyses. We discuss datasets and analyses pertaining to fibrosis following glaucoma surgery, and to glaucoma resulting from the use of steroids. We conclude by pointing out the current lack and underutilization of ocular gene expression data, and how the state of the art is expected to improve in the future.
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Affiliation(s)
- Georg Fuellen
- Institute for Biostatistics and Informatics in Medicine and Aging Research, Rostock University Medical Center, Rostock, Germany
| | - Anselm Jünemann
- Institute for Biostatistics and Informatics in Medicine and Aging Research, Rostock University Medical Center, Rostock, Germany
- Department of Ophthalmology, Rostock University Medical Center, Rostock, Germany
- Department of General Ophthalmology and Pediatric Ophthalmology Service, Medical University of Lublin, Lublin, Poland
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Liesenborghs I, Schouten JS, Kutmon M, Gorgels TG, Evelo CT, Hubens WH, Beckers HJ, Webers CA, Eijssen LM. A systematically derived overview of the non-ubiquitous pathways and genes that define the molecular and genetic signature of the healthy trabecular meshwork. Genomics 2022; 114:110280. [DOI: 10.1016/j.ygeno.2022.110280] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Revised: 06/10/2021] [Accepted: 01/31/2022] [Indexed: 11/28/2022]
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Upregulated NOTCH Signaling in the Lens of Patients with Pseudoexfoliation Syndrome Compared to Pseudoexfoliation Glaucoma Suggests Protective Role. J Glaucoma 2022; 31:e1-e9. [DOI: 10.1097/ijg.0000000000001975] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2021] [Accepted: 12/03/2021] [Indexed: 11/26/2022]
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Yun S, Lee D, Kang S, Kim DW, Kim Y, Cho JY, Seo K. Proteomic analysis of aqueous humor in canine primary angle-closure glaucoma in American Cocker Spaniel dogs. Vet Ophthalmol 2021; 24:520-532. [PMID: 34558166 DOI: 10.1111/vop.12937] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Revised: 09/02/2021] [Accepted: 09/06/2021] [Indexed: 11/26/2022]
Abstract
OBJECTIVE To analyze proteomic profiles of the aqueous humor (AH) of canines with primary angle-closure glaucoma (PACG) and identify associated protein alterations. ANIMALS STUDIED Six American Cocker Spaniels with PACG and six American Cocker Spaniels without ocular diseases. METHODS Aqueous humor samples were collected from six American Cocker Spaniels with PACG at Seoul National University, VMTH, and six healthy Cocker Spaniels without ocular disease at Irion Animal Hospital. For the PACG group, AH samples were obtained by anterior chamber paracentesis prior to glaucoma treatment. For the AH control group, AH samples were collected from patients anesthetized for other reasons. Total AH protein concentration was determined by the bicinchoninic acid (BCA) assay. AH protein samples were quantified by liquid chromatography-mass spectrometry (LC-MS/MS). Raw MS spectra were processed using MaxQuant software 30, and the Gene Ontology (GO) enrichment analysis was performed using ClueGO. RESULTS The AH protein concentration in the PACG group (10.49 ± 17.98 µg/µl) was significantly higher than that of the control group (0.45 ± 0.11 µg/µl; p < .05). A total of 758 proteins were identified in the AH. Several proteins both significantly increased (n = 69) and decreased (n = 252) in the PACG group compared to those in the control group. GO enrichment analysis showed that the "response to wounding," "negative regulation of endopeptidase activity," and "cell growth" pathways were the most enriched terms in the PACG group compared to the control group. The top 5 proteins that were significantly increased in the AH of the PACG group were secreted phosphoprotein 1 (SPP1), peptidoglycan recognition proteins 2 (PGLYRP2), tyrosine 3-monooxygenase (YWHAE), maltase-glucoamylase (MGAM), and vimentin (VIM). CONCLUSIONS Gene Ontology enrichment analysis using the proteomic data showed that proteins and pathways related to inflammation were significantly upregulated in the various stage of PACG. Proteomic analysis of the AH from the PACG may provide valuable insights into PACG pathogenesis.
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Affiliation(s)
- Seongjin Yun
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, Korea.,Irion animal hospital, Seoul, Korea
| | - Dabin Lee
- Department of Veterinary Biochemistry, BK21 PLUS Program for Creative Veterinary Science Research and Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul National University, Seoul, Korea
| | - Seonmi Kang
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, Korea
| | - Dong Wook Kim
- Department of Veterinary Biochemistry, BK21 PLUS Program for Creative Veterinary Science Research and Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul National University, Seoul, Korea
| | - Youngsam Kim
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, Korea
| | - Je-Yoel Cho
- Department of Veterinary Biochemistry, BK21 PLUS Program for Creative Veterinary Science Research and Research Institute for Veterinary Science, College of Veterinary Medicine, Seoul National University, Seoul, Korea
| | - Kangmoon Seo
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul, Korea
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Fan X, Bilir EK, Kingston OA, Oldershaw RA, Kearns VR, Willoughby CE, Sheridan CM. Replacement of the Trabecular Meshwork Cells-A Way Ahead in IOP Control? Biomolecules 2021; 11:biom11091371. [PMID: 34572584 PMCID: PMC8464777 DOI: 10.3390/biom11091371] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Revised: 09/09/2021] [Accepted: 09/13/2021] [Indexed: 12/11/2022] Open
Abstract
Glaucoma is one of the leading causes of vision loss worldwide, characterised with irreversible optic nerve damage and progressive vision loss. Primary open-angle glaucoma (POAG) is a subset of glaucoma, characterised by normal anterior chamber angle and raised intraocular pressure (IOP). Reducing IOP is the main modifiable factor in the treatment of POAG, and the trabecular meshwork (TM) is the primary site of aqueous humour outflow (AH) and the resistance to outflow. The structure and the composition of the TM are key to its function in regulating AH outflow. Dysfunction and loss of the TM cells found in the natural ageing process and more so in POAG can cause abnormal extracellular matrix (ECM) accumulation, increased TM stiffness, and increased IOP. Therefore, repair or regeneration of TM's structure and function is considered as a potential treatment for POAG. Cell transplantation is an attractive option to repopulate the TM cells in POAG, but to develop a cell replacement approach, various challenges are still to be addressed. The choice of cell replacement covers autologous or allogenic approaches, which led to investigations into TM progenitor cells, induced pluripotent stem cells (iPSCs), and mesenchymal stem cells (MSCs) as potential stem cell source candidates. However, the potential plasticity and the lack of definitive cell markers for the progenitor and the TM cell population compound the biological challenge. Morphological and differential gene expression of TM cells located within different regions of the TM may give rise to different cell replacement or regenerative approaches. As such, this review describes the different approaches taken to date investigating different cell sources and their differing cell isolation and differentiation methodologies. In addition, we highlighted how these approaches were evaluated in different animal and ex vivo model systems and the potential of these methods in future POAG treatment.
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Affiliation(s)
- Xiaochen Fan
- Department of Eye and Vision Science, Institute of Life Course and Medical Sciences, University of Liverpool, Liverpool L69 3BX, UK; (X.F.); (E.K.B.); (O.A.K.); (V.R.K.)
| | - Emine K. Bilir
- Department of Eye and Vision Science, Institute of Life Course and Medical Sciences, University of Liverpool, Liverpool L69 3BX, UK; (X.F.); (E.K.B.); (O.A.K.); (V.R.K.)
| | - Olivia A. Kingston
- Department of Eye and Vision Science, Institute of Life Course and Medical Sciences, University of Liverpool, Liverpool L69 3BX, UK; (X.F.); (E.K.B.); (O.A.K.); (V.R.K.)
| | - Rachel A. Oldershaw
- Department of Musculoskeletal and Ageing Science, Institute of Life Course and Medical Sciences, University of Liverpool, Liverpool L69 3BX, UK;
| | - Victoria R. Kearns
- Department of Eye and Vision Science, Institute of Life Course and Medical Sciences, University of Liverpool, Liverpool L69 3BX, UK; (X.F.); (E.K.B.); (O.A.K.); (V.R.K.)
| | - Colin E. Willoughby
- Department of Eye and Vision Science, Institute of Life Course and Medical Sciences, University of Liverpool, Liverpool L69 3BX, UK; (X.F.); (E.K.B.); (O.A.K.); (V.R.K.)
- Genomic Medicine, Biomedical Sciences Research Institute, Ulster University, Coleraine BT52 1SA, UK
- Correspondence: (C.E.W.); (C.M.S.); Tel.: +44-(28)-701-2338 (C.E.W.); +44-(151)-794-9031 (C.M.S.)
| | - Carl M. Sheridan
- Department of Eye and Vision Science, Institute of Life Course and Medical Sciences, University of Liverpool, Liverpool L69 3BX, UK; (X.F.); (E.K.B.); (O.A.K.); (V.R.K.)
- Correspondence: (C.E.W.); (C.M.S.); Tel.: +44-(28)-701-2338 (C.E.W.); +44-(151)-794-9031 (C.M.S.)
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Wang W, Miao Y, Sui S, Wang Y, Wu S, Cao Q, Duan H, Qi X, Zhou Q, Pan X, Zhang J, Chen X, Han Y, Wang N, Kuehn MH, Zhu W. Xeno- and Feeder-Free Differentiation of Human iPSCs to Trabecular Meshwork-Like Cells by Recombinant Cytokines. Transl Vis Sci Technol 2021; 10:27. [PMID: 34015102 PMCID: PMC8142710 DOI: 10.1167/tvst.10.6.27] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Purpose Stem cell-based therapy has the potential to become one approach to regenerate the damaged trabecular meshwork (TM) in glaucoma. Co-culture of induced pluripotent stem cells (iPSCs) with human TM cells has been a successful approach to generate autologous TM resembling cells. However, the differentiated cells generated using this approach are still problematic for clinical usage. This study aimed to develop a clinically applicable strategy for generating TM-like cells from iPSCs. Methods Highly expressed receptors during iPSC differentiation were identified by AutoSOME, Gene Ontology, and reverse transcription polymerase chain reaction (RT-PCR) analysis. The recombinant cytokines that bind to these receptors were used to generate a new differentiation protocol. The resultant TM-like cells were characterized morphologically, immunohistochemically, and transcriptionally. Results We first determined two stages of iPSC differentiation and identified highly expressed receptors associated with the differentiation at each stage. The expression of these receptors was further confirmed by RT-PCR analysis. Exposure to the recombinant cytokines that bind to these receptors, including transforming growth factor beta 1, nerve growth factor beta, erythropoietin, prostaglandin F2 alpha, and epidermal growth factor, can efficiently differentiate iPSCs into TM-like cells, which express TM biomarkers and can form dexamethasone-inducible CLANs. Conclusions We successfully generated a xeno- and feeder-free differentiation protocol with recombinant cytokines to generate the TM progenitor and TM-like cells from human iPSCs. Translational Relevance The new approach minimizes the risks from contamination and also improves the differentiation efficiency and consistency, which are particularly crucial for clinical use of stem cells in glaucoma treatment.
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Affiliation(s)
- Wenyan Wang
- Department of Pharmacology, School of Pharmacy, Qingdao University, Qingdao, China.,School of Basic Medicine, Qingdao University, Qingdao, China
| | - Yongzhen Miao
- Department of Pharmacology, School of Pharmacy, Qingdao University, Qingdao, China
| | - Shangru Sui
- Department of Pharmacology, School of Pharmacy, Qingdao University, Qingdao, China
| | - Yanan Wang
- Department of Pharmacology, School of Pharmacy, Qingdao University, Qingdao, China.,School of Basic Medicine, Qingdao University, Qingdao, China
| | - Shen Wu
- Beijing Institute of Ophthalmology, Beijing Tongren Hospital Eye Center, Beijing, China
| | - Qilong Cao
- Qingdao Haier Biotech Co. Ltd., Qingdao, China
| | - Haoyun Duan
- Qingdao Eye Hospital, Shandong Eye Institute, Shandong Academy of Medical Sciences, Qingdao, China
| | - Xia Qi
- Qingdao Eye Hospital, Shandong Eye Institute, Shandong Academy of Medical Sciences, Qingdao, China
| | - Qingjun Zhou
- Qingdao Eye Hospital, Shandong Eye Institute, Shandong Academy of Medical Sciences, Qingdao, China
| | - Xiaojing Pan
- Qingdao Eye Hospital, Shandong Eye Institute, Shandong Academy of Medical Sciences, Qingdao, China
| | - Jingxue Zhang
- Beijing Institute of Ophthalmology, Beijing Tongren Hospital Eye Center, Beijing, China
| | - Xuehong Chen
- School of Basic Medicine, Qingdao University, Qingdao, China
| | - Yantao Han
- School of Basic Medicine, Qingdao University, Qingdao, China
| | - Ningli Wang
- Beijing Institute of Ophthalmology, Beijing Tongren Hospital Eye Center, Beijing, China
| | - Markus H Kuehn
- Department of Ophthalmology and Visual Sciences, University of Iowa, Iowa City, IA, USA.,Center for the Prevention and Treatment of Visual Loss, Iowa City Veterans Affairs Medical Center, Iowa City, IA, USA
| | - Wei Zhu
- Department of Pharmacology, School of Pharmacy, Qingdao University, Qingdao, China.,Advanced Innovation Center for Big Data-Based Precision Medicine, Beijing University of Aeronautics and Astronautics-Capital Medical University, Beijing, China
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12
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Sundaresan Y, Ramasamy KS, Veerappan M, Chidambaranathan GP. Functional characterization of adult human trabecular meshwork stem cells. Exp Cell Res 2021; 405:112709. [PMID: 34174318 DOI: 10.1016/j.yexcr.2021.112709] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Revised: 05/13/2021] [Accepted: 06/21/2021] [Indexed: 10/21/2022]
Abstract
We earlier identified native human trabecular meshwork stem cells (TMSCs) based on two-parameters- high ABCG2 expression and high nucleus to cytoplasmic ratio. The TMSCs also expressed p75 and AnkyrinG. Based on the high expression of ABCG2 and p75, the TMSCs were identified to be located in the Schwalbe's line region of the TM. In continuation, the current study aimed at elucidating the functional characteristics of human TMSCs. Upon culturing, only a small proportion of TM cells (0.96 ± 0.21% in <30 years) expressing stem cell markers ABCG2 and p75 adhered to the culture dish. This proportion significantly reduced with ageing (0.32 ± 0.23% in 30-60 years and 0.35 ± 0.04% in >60 years). Characterization of the primary TM cultures identified 7.00 ± 1.80% of stem cells with label retaining property. Further, cultured cells had the ability to form TM spheres (0.82 ± 0.23%) which consisted of high ABCG2 and p75 positive cells. Upon dexamethasone induction, 86.00 ± 14.87% and 64.60 ± 7.24% of the cells derived from the TM spheres expressed myocilin and exhibited cross linked actin networks respectively, indicating differentiation of the TMSCs in the sphere to TM cells. In addition, the sphere derived TM cells also possessed phagocytic potential (13.28 ± 3.30%) equivalent to primary TM cells (16.33 ± 4.04%) which was evident upon internalization of zymosan particles. In conclusion, this study has established that a proportion of cultured TM cells had the label retaining property as well as sphere forming ability of adult stem cells. Thus, these results confirm the presence of adult stem cells in the human TM that might be responsible for the maintenance of tissue homeostasis.
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Affiliation(s)
- Yogapriya Sundaresan
- Department of Immunology and Stem Cell Biology, Aravind Medical Research Foundation, Madurai, Tamil Nadu, India
| | - Krishnadas Subbiah Ramasamy
- Glaucoma Clinic, Aravind Eye Hospital and Post Graduate Institute of Ophthalmology, Madurai, Tamil Nadu, India
| | - Muthukkaruppan Veerappan
- Department of Immunology and Stem Cell Biology, Aravind Medical Research Foundation, Madurai, Tamil Nadu, India
| | - Gowri Priya Chidambaranathan
- Department of Immunology and Stem Cell Biology, Aravind Medical Research Foundation, Madurai, Tamil Nadu, India.
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13
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Elevated dimethylarginine, ATP, cytokines, metabolic remodeling involving tryptophan metabolism and potential microglial inflammation characterize primary open angle glaucoma. Sci Rep 2021; 11:9766. [PMID: 33963197 PMCID: PMC8105335 DOI: 10.1038/s41598-021-89137-z] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Accepted: 04/20/2021] [Indexed: 02/03/2023] Open
Abstract
Glaucoma of which primary open angle glaucoma (POAG) constitutes 75%, is the second leading cause of blindness. Elevated intra ocular pressure and Nitric oxide synthase (NOS) dysfunction are hallmarks of POAG. We analyzed clinical data, cytokine profile, ATP level, metabolomics and GEO datasets to identify features unique to POAG. N9 microglial cells are used to gain mechanistic insights. Our POAG cohort showed elevated ATP in aqueous humor and cytokines in plasma. Metabolomic analysis showed changes in 21 metabolites including Dimethylarginine (DMAG) and activation of tryptophan metabolism in POAG. Analysis of GEO data sets and previously published proteomic data sets bins genes into signaling and metabolic pathways. Pathways from reanalyzed metabolomic data from literature significantly overlapped with those from our POAG data. DMAG modulated purinergic signaling, ATP secretion and cytokine expression were inhibited by N-Ethylmaleimide, NO donors, BAPTA and purinergic receptor inhibitors. ATP induced elevated intracellular calcium level and cytokines expression were inhibited by BAPTA. Metabolomics of cell culture supernatant from ATP treated sets showed metabolic deregulation and activation of tryptophan metabolism. DMAG and ATP induced IDO1/2 and TDO2 were inhibited by N-Ethylmaleimide, sodium nitroprusside and BAPTA. Our data obtained from clinical samples and cell culture studies reveal a strong association of elevated DMAG, ATP, cytokines and activation of tryptophan metabolism with POAG. DMAG mediated ATP signaling, inflammation and metabolic remodeling in microglia might have implications in management of POAG.
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14
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Pinazo-Durán MD, García-Medina JJ, Bolarín JM, Sanz-González SM, Valero-Vello M, Abellán-Abenza J, Zanón-Moreno V, Moreno-Montañés J. Computational Analysis of Clinical and Molecular Markers and New Theranostic Possibilities in Primary Open-Angle Glaucoma. J Clin Med 2020; 9:E3032. [PMID: 32967086 PMCID: PMC7564865 DOI: 10.3390/jcm9093032] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Revised: 09/06/2020] [Accepted: 09/14/2020] [Indexed: 12/12/2022] Open
Abstract
Primary open-angle glaucoma (POAG) is a paramount cause of irreversible visual disability worldwide. We focus on identifying clinical and molecular facts that may help elucidating the pathogenic mechanisms of the disease. By using ophthalmological approaches (biomicroscopy, ocular fundus, optical coherence tomography, and perimetry) and experimental tests (enzyme-linked immunosorbent assay (ELISA), high performance liquid chromatography (HPLC), and Western blot/immunoblotting) directed to evaluate the oxidative stress, inflammation, apoptosis, and neurodegeneration processes, we gather information to build a network of data to perform a computational bioinformatics analysis. Our results showed strong interaction of the above players and its downstream effectors in POAG pathogenesis. In conclusion, specific risk factors were identified, and molecules involved in multiple pathways were found in relation to anterior and posterior eye segment glaucoma changes, pointing to new theranostic challenges for better managing POAG progression.
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Affiliation(s)
- María D. Pinazo-Durán
- Ophthalmic Research Unit “Santiago Grisolía”/FISABIO and Cellular and Molecular Ophthalmo-Biology Group of the University of Valencia, 46010 Valencia, Spain; (J.J.G.-M.); (S.M.S.-G.); (M.V.-V.); (V.Z.-M.)
- Researchers of the Spanish Net of Ophthalmic Research “OFTARED” RD16/0008/0022, of the Institute of Health Carlos III, 28029 Madrid, Spain;
| | - José J. García-Medina
- Ophthalmic Research Unit “Santiago Grisolía”/FISABIO and Cellular and Molecular Ophthalmo-Biology Group of the University of Valencia, 46010 Valencia, Spain; (J.J.G.-M.); (S.M.S.-G.); (M.V.-V.); (V.Z.-M.)
- Researchers of the Spanish Net of Ophthalmic Research “OFTARED” RD16/0008/0022, of the Institute of Health Carlos III, 28029 Madrid, Spain;
- Department of Ophthalmology at the University Hospital “Morales Meseguer” and Department of Ophthalmology at the Faculty of Medicine, University of Murcia, 30008 Murcia, Spain
| | - José M. Bolarín
- Center of Information and Communication Techniques (CENTIC), 30100 Murcia, Spain; (J.M.B.); (J.A.-A.)
| | - Silvia M. Sanz-González
- Ophthalmic Research Unit “Santiago Grisolía”/FISABIO and Cellular and Molecular Ophthalmo-Biology Group of the University of Valencia, 46010 Valencia, Spain; (J.J.G.-M.); (S.M.S.-G.); (M.V.-V.); (V.Z.-M.)
- Researchers of the Spanish Net of Ophthalmic Research “OFTARED” RD16/0008/0022, of the Institute of Health Carlos III, 28029 Madrid, Spain;
| | - Mar Valero-Vello
- Ophthalmic Research Unit “Santiago Grisolía”/FISABIO and Cellular and Molecular Ophthalmo-Biology Group of the University of Valencia, 46010 Valencia, Spain; (J.J.G.-M.); (S.M.S.-G.); (M.V.-V.); (V.Z.-M.)
| | - Javier Abellán-Abenza
- Center of Information and Communication Techniques (CENTIC), 30100 Murcia, Spain; (J.M.B.); (J.A.-A.)
| | - Vicente Zanón-Moreno
- Ophthalmic Research Unit “Santiago Grisolía”/FISABIO and Cellular and Molecular Ophthalmo-Biology Group of the University of Valencia, 46010 Valencia, Spain; (J.J.G.-M.); (S.M.S.-G.); (M.V.-V.); (V.Z.-M.)
- Researchers of the Spanish Net of Ophthalmic Research “OFTARED” RD16/0008/0022, of the Institute of Health Carlos III, 28029 Madrid, Spain;
- Area of Health, Valencian International University, 46002 Valencia, Spain
| | - Javier Moreno-Montañés
- Researchers of the Spanish Net of Ophthalmic Research “OFTARED” RD16/0008/0022, of the Institute of Health Carlos III, 28029 Madrid, Spain;
- Department of Ophthalmology at the Clínica Universidad de Navarra, 31008 Pamplona, Spain
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15
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Molecular taxonomy of human ocular outflow tissues defined by single-cell transcriptomics. Proc Natl Acad Sci U S A 2020; 117:12856-12867. [PMID: 32439707 PMCID: PMC7293718 DOI: 10.1073/pnas.2001896117] [Citation(s) in RCA: 63] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Ocular hypertension is the primary and only modifiable risk factor for glaucoma, the leading cause of irreversible blindness. Intraocular pressure is regulated homeostatically by resistance to aqueous humor outflow through an architecturally complex tissue, the conventional/trabecular pathway. In this study, we generated a comprehensive cell atlas of the human trabecular meshwork and neighboring tissues using single-cell RNA sequencing. We identified 12 distinct cell types and mapped region-specific expression of candidate genes. The utility of our atlas was demonstrated by mapping glaucoma-relevant genes to conventional outflow cell types. Our study provides a comprehensive molecular and cellular classification of tissue structures responsible for intraocular pressure homeostasis in health and dysregulation in disease. The conventional outflow pathway is a complex tissue responsible for maintaining intraocular pressure (IOP) homeostasis. The coordinated effort of multiple cells with differing responsibilities ensures healthy outflow function and IOP maintenance. Dysfunction of one or more resident cell types results in ocular hypertension and risk for glaucoma, a leading cause of blindness. In this study, single-cell RNA sequencing was performed to generate a comprehensive cell atlas of human conventional outflow tissues. We obtained expression profiles of 17,757 genes from 8,758 cells from eight eyes of human donors representing the outflow cell transcriptome. Upon clustering analysis, 12 distinct cell types were identified, and region-specific expression of candidate genes was mapped in human tissues. Significantly, we identified two distinct expression patterns (myofibroblast- and fibroblast-like) from cells located in the trabecular meshwork (TM), the primary structural component of the conventional outflow pathway. We also located Schwann cell and macrophage signatures in the TM. The second primary component structure, Schlemm’s canal, displayed a unique combination of lymphatic/blood vascular gene expression. Other expression clusters corresponded to cells from neighboring tissues, predominantly in the ciliary muscle/scleral spur, which together correspond to the uveoscleral outflow pathway. Importantly, the utility of our atlas was demonstrated by mapping glaucoma-relevant genes to outflow cell clusters. Our study provides a comprehensive molecular and cellular classification of conventional and unconventional outflow pathway structures responsible for IOP homeostasis.
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16
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van Zyl T, Yan W, McAdams A, Peng YR, Shekhar K, Regev A, Juric D, Sanes JR. Cell atlas of aqueous humor outflow pathways in eyes of humans and four model species provides insight into glaucoma pathogenesis. Proc Natl Acad Sci U S A 2020; 117:10339-10349. [PMID: 32341164 PMCID: PMC7229661 DOI: 10.1073/pnas.2001250117] [Citation(s) in RCA: 108] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Increased intraocular pressure (IOP) represents a major risk factor for glaucoma, a prevalent eye disease characterized by death of retinal ganglion cells; lowering IOP is the only proven treatment strategy to delay disease progression. The main determinant of IOP is the equilibrium between production and drainage of aqueous humor, with compromised drainage generally viewed as the primary contributor to dangerous IOP elevations. Drainage occurs through two pathways in the anterior segment of the eye called conventional and uveoscleral. To gain insights into the cell types that comprise these pathways, we used high-throughput single-cell RNA sequencing (scRNAseq). From ∼24,000 single-cell transcriptomes, we identified 19 cell types with molecular markers for each and used histological methods to localize each type. We then performed similar analyses on four organisms used for experimental studies of IOP dynamics and glaucoma: cynomolgus macaque (Macaca fascicularis), rhesus macaque (Macaca mulatta), pig (Sus scrofa), and mouse (Mus musculus). Many human cell types had counterparts in these models, but differences in cell types and gene expression were evident. Finally, we identified the cell types that express genes implicated in glaucoma in all five species. Together, our results provide foundations for investigating the pathogenesis of glaucoma and for using model systems to assess mechanisms and potential interventions.
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Affiliation(s)
- Tavé van Zyl
- Department of Ophthalmology, Harvard Medical School and Massachusetts Eye and Ear, Boston, MA 02114;
- Center for Brain Science, Harvard University, Cambridge, MA 02138
- Department of Molecular and Cellular Biology, Harvard University, Cambridge, MA 02138
| | - Wenjun Yan
- Center for Brain Science, Harvard University, Cambridge, MA 02138
- Department of Molecular and Cellular Biology, Harvard University, Cambridge, MA 02138
| | - Alexi McAdams
- Department of Ophthalmology, Harvard Medical School and Massachusetts Eye and Ear, Boston, MA 02114
- Center for Brain Science, Harvard University, Cambridge, MA 02138
- Department of Molecular and Cellular Biology, Harvard University, Cambridge, MA 02138
| | - Yi-Rong Peng
- Center for Brain Science, Harvard University, Cambridge, MA 02138
- Department of Molecular and Cellular Biology, Harvard University, Cambridge, MA 02138
| | - Karthik Shekhar
- Howard Hughes Medical Institute, Massachusetts Institute of Technology, Cambridge, MA 02142
- Koch Institute of Integrative Cancer Research, Department of Biology, Massachusetts Institute of Technology, Cambridge, MA 02142
| | - Aviv Regev
- Howard Hughes Medical Institute, Massachusetts Institute of Technology, Cambridge, MA 02142
- Koch Institute of Integrative Cancer Research, Department of Biology, Massachusetts Institute of Technology, Cambridge, MA 02142
- Klarman Cell Observatory, Broad Institute of Massachusetts Institute of Technology and Harvard, Cambridge, MA 02142
| | - Dejan Juric
- Department of Medicine, Harvard Medical School and Massachusetts General Hospital Cancer Center, Boston, MA 02114
| | - Joshua R Sanes
- Center for Brain Science, Harvard University, Cambridge, MA 02138;
- Department of Molecular and Cellular Biology, Harvard University, Cambridge, MA 02138
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17
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Tie J, Chen D, Guo J, Liao S, Luo X, Zhang Y, Guo R, Xu C, Huang D, Zhang Y, Wang J. Transcriptome-wide study of the response of human trabecular meshwork cells to the substrate stiffness increase. J Cell Biochem 2020; 121:3112-3123. [PMID: 32115746 DOI: 10.1002/jcb.29578] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2019] [Accepted: 12/09/2019] [Indexed: 02/06/2023]
Abstract
Elevated intraocular pressure, a major risk factor of glaucoma, is caused by the abnormal function of trabecular outflow pathways. Human trabecular meshwork (HTM) tissue plays an important role in the outflow pathways. However, the molecular mechanisms that how TM cells respond to the elevated IOP are largely unknown. We cultured primary HTM cells on polyacrylamide gels with tunable stiffness corresponding to Young's moduli ranging from 1.1 to 50 kPa. Then next-generation RNA sequencing (RNA-seq) was performed to obtain the transcriptomic profiles of HTM cells. Bioinformatics analysis revealed that genes related to glaucoma including DCN, SPARC, and CTGF, were significantly increased with elevated substrate stiffness, as well as the global alteration of HTM transcriptome. Extracellular matrix (ECM)-related genes were selectively activated in response to the elevated substrate stiffness, consistent with the known molecular alteration in glaucoma. Human normal and glaucomatous TM tissues were also obtained to perform RNA-seq experiments and supported the substrate stiffness-altered transcriptome profiles from the in vitro cell model. The current study profiled the transcriptomic changes in human TM cells upon increasing substrate stiffness. Global change of ECM-related genes indicates that the in vitro substrate stiffness could greatly affect the biological processes of HTM cells. The in vitro HTM cell model could efficiently capture the main pathogenetic process in glaucoma patients, and provide a powerful method to investigate the underlying molecular mechanisms.
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Affiliation(s)
- Jinjun Tie
- Tianjin Medical University Eye Institute, Tianjin Medical University, Tianjin, China.,College of Optometry and Ophthalmology, Tianjin Medical University, Tianjin, China
| | - Dong Chen
- Center for Genome Analysis, ABLife Inc., Wuhan, Hubei, China.,Laboratory for Genome Regulation and Human Health, ABLife Inc., Wuhan, Hubei, China
| | - Junhong Guo
- Shenzhen Key Laboratory of Ophthalmology, Shenzhen Eye Institute, Shenzhen Eye Hospital, Jinan University, Shenzhen, Guangdong, China.,School of Ophthalmology & Optometry, Shenzhen University, Shenzhen, Guangdong, China
| | - Shengjie Liao
- Center for Genome Analysis, ABLife Inc., Wuhan, Hubei, China.,Laboratory for Genome Regulation and Human Health, ABLife Inc., Wuhan, Hubei, China
| | - Xiaotian Luo
- Laboratory for Genome Regulation and Human Health, ABLife Inc., Wuhan, Hubei, China
| | - Yu Zhang
- Center for Genome Analysis, ABLife Inc., Wuhan, Hubei, China
| | - Ruru Guo
- Tianjin Medical University Eye Institute, Tianjin Medical University, Tianjin, China
| | - Chenjia Xu
- Tianjin Medical University Eye Institute, Tianjin Medical University, Tianjin, China.,College of Optometry and Ophthalmology, Tianjin Medical University, Tianjin, China
| | - Dandan Huang
- Tianjin Medical University Eye Institute, Tianjin Medical University, Tianjin, China.,College of Optometry and Ophthalmology, Tianjin Medical University, Tianjin, China
| | - Yi Zhang
- Center for Genome Analysis, ABLife Inc., Wuhan, Hubei, China.,Laboratory for Genome Regulation and Human Health, ABLife Inc., Wuhan, Hubei, China
| | - Jiantao Wang
- Shenzhen Key Laboratory of Ophthalmology, Shenzhen Eye Institute, Shenzhen Eye Hospital, Jinan University, Shenzhen, Guangdong, China.,School of Ophthalmology & Optometry, Shenzhen University, Shenzhen, Guangdong, China
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18
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Stem cells from trabecular meshwork cells can secrete extracellular matrix. Biochem Biophys Res Commun 2020; 523:522-526. [PMID: 31902587 DOI: 10.1016/j.bbrc.2019.12.080] [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: 12/13/2019] [Accepted: 12/17/2019] [Indexed: 01/01/2023]
Abstract
Isolation of trabecular meshwork stem cells in vitro provides the foundation of a novel treatment for glaucoma. Trabecular meshwork stem cells (TMSCs) of the fetal calve were extracted and cultured for this experiment. TMSCs were isolated through side population cell sorting. TMSCs were then identified using immunofluorescent staining. Extracellular matrix (ECM) expression in TM cells derived from TMSCs was evaluated with Western blot. Our results showed a positive expression of stem cell markers Notch1 and OCT-3/4 in TMSCs, but no TM cells markers TIMP3 or AQP1. In contrast, primary TM cells expressed these TM cell markers but no stem cell markers. Our result confirmed that there are expression of ECM components, such as fibronectin, laminin, collagen I and collagen IV in TM cells differentiated from TMSCs. CONCLUSION: TM cells derived from TMSCs can secrete ECM components which is important for sustain the physiological function.
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19
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Ling L, Ren X, Cao X, Hassan ABM, Mah S, Sathiyanathan P, Smith RAA, Tan CLL, Eio M, Samsonraj RM, van Wijnen AJ, Raghunath M, Nurcombe V, Hui JH, Cool SM. Enhancing the Efficacy of Stem Cell Therapy with Glycosaminoglycans. Stem Cell Reports 2020; 14:105-121. [PMID: 31902704 PMCID: PMC6962655 DOI: 10.1016/j.stemcr.2019.12.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2018] [Revised: 12/01/2019] [Accepted: 12/02/2019] [Indexed: 12/16/2022] Open
Abstract
Human mesenchymal stem cell (hMSC) therapy offers significant potential for osteochondral regeneration. Such applications require their ex vivo expansion in media frequently supplemented with fibroblast growth factor 2 (FGF2). Particular heparan sulfate (HS) fractions stabilize FGF2-FGF receptor complexes. We show that an FGF2-binding HS variant (HS8) accelerates the expansion of freshly isolated bone marrow hMSCs without compromising their naivety. Importantly, the repair of osteochondral defects in both rats and pigs is improved after treatment with HS8-supplemented hMSCs (MSCHS8), when assessed histologically, biomechanically, or by MRI. Thus, supplementing hMSC culture media with an HS variant that targets endogenously produced FGF2 allows the elimination of exogenous growth factors that may adversely affect their therapeutic potency. An FGF2-binding heparan sulfate (HS8) accelerates the ex vivo expansion of hMSCs hMSCs expanded with HS8 maintain stem cell characteristics and potency HS8-expanded hMSCs improve osteochondral regeneration in animal models HS8 is an effective bio-additive for the scale up of highly potent hMSCs
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Affiliation(s)
- Ling Ling
- Institute of Medical Biology, Agency for Science Technology and Research (A(∗)STAR), 8A Biomedical Grove, #06-06 Immunos, Singapore 138648, Singapore
| | - Xiafei Ren
- Department of Orthopaedic Surgery, Yong Loo Lin School of Medicine, National University Health System, National University of Singapore, 1E Kent Ridge Road, Singapore 119074/119288, Singapore
| | - Xue Cao
- Department of Orthopaedic Surgery, Yong Loo Lin School of Medicine, National University Health System, National University of Singapore, 1E Kent Ridge Road, Singapore 119074/119288, Singapore
| | - Afizah Binte Mohd Hassan
- Department of Orthopaedic Surgery, Yong Loo Lin School of Medicine, National University Health System, National University of Singapore, 1E Kent Ridge Road, Singapore 119074/119288, Singapore
| | - Sophia Mah
- Institute of Medical Biology, Agency for Science Technology and Research (A(∗)STAR), 8A Biomedical Grove, #06-06 Immunos, Singapore 138648, Singapore
| | - Padmapriya Sathiyanathan
- Institute of Medical Biology, Agency for Science Technology and Research (A(∗)STAR), 8A Biomedical Grove, #06-06 Immunos, Singapore 138648, Singapore
| | - Raymond A A Smith
- Institute of Medical Biology, Agency for Science Technology and Research (A(∗)STAR), 8A Biomedical Grove, #06-06 Immunos, Singapore 138648, Singapore
| | - Clarissa L L Tan
- Institute of Medical Biology, Agency for Science Technology and Research (A(∗)STAR), 8A Biomedical Grove, #06-06 Immunos, Singapore 138648, Singapore
| | - Michelle Eio
- Institute of Medical Biology, Agency for Science Technology and Research (A(∗)STAR), 8A Biomedical Grove, #06-06 Immunos, Singapore 138648, Singapore
| | - Rebekah M Samsonraj
- Institute of Medical Biology, Agency for Science Technology and Research (A(∗)STAR), 8A Biomedical Grove, #06-06 Immunos, Singapore 138648, Singapore
| | - Andre J van Wijnen
- Department of Orthopaedic Surgery & Biochemistry and Molecular Biology, Mayo Clinic, Rochester, MN 55905, USA
| | - Michael Raghunath
- Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117596, Singapore
| | - Victor Nurcombe
- Institute of Medical Biology, Agency for Science Technology and Research (A(∗)STAR), 8A Biomedical Grove, #06-06 Immunos, Singapore 138648, Singapore
| | - James H Hui
- Department of Orthopaedic Surgery, Yong Loo Lin School of Medicine, National University Health System, National University of Singapore, 1E Kent Ridge Road, Singapore 119074/119288, Singapore.
| | - Simon M Cool
- Institute of Medical Biology, Agency for Science Technology and Research (A(∗)STAR), 8A Biomedical Grove, #06-06 Immunos, Singapore 138648, Singapore; Department of Orthopaedic Surgery, Yong Loo Lin School of Medicine, National University Health System, National University of Singapore, 1E Kent Ridge Road, Singapore 119074/119288, Singapore.
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20
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Kumar A, Xu Y, Du Y. Stem Cells from Human Trabecular Meshwork Hold the Potential to Develop into Ocular and Non-Ocular Lineages After Long-Term Storage. Stem Cells Dev 2020; 29:49-61. [PMID: 31680626 PMCID: PMC6931915 DOI: 10.1089/scd.2019.0169] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2019] [Accepted: 11/01/2019] [Indexed: 01/10/2023] Open
Abstract
Stem cells from the eye hold a great potential for vision restoration and can also be used for regeneration in other tissues. In this study, we characterized the stem cell properties of Trabecular meshwork stem cells (TMSCs) after long-term cryopreservation (∼8 years). TMSCs derived from four donors were examined for their viability and proliferation, as well as stem cell marker expression. Spheroid formation, colony formation, and multipotency were investigated. We observed that TMSCs were fully viable with variable proliferation ability. They expressed the stem cell markers CD90, CD166, CD105, CD73, OCT4, SSEA4, Notch1, KLF4, ABCG2, Nestin, and HNK1 detected by flow cytometry, quantitative polymerase chain reaction, or immunofluorescent staining. They could form spheroids and colonies after thawing. All TMSCs were able to differentiate into osteocytes, neural cells, and trabecular meshwork (TM) cells, but not adipocytes. Differentiated TM cells responded to dexamethasone treatment with increased expression of myocilin and angiopoietin-like 7 (ANGPTL7). In a nutshell, our study demonstrated that TMSCs retain their stem cell properties after long-term cryopreservation and hence can be an effective cell therapy source for various clinical applications.
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Affiliation(s)
- Ajay Kumar
- Department of Ophthalmology, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Yi Xu
- Department of Ophthalmology, University of Pittsburgh, Pittsburgh, Pennsylvania
| | - Yiqin Du
- Department of Ophthalmology, University of Pittsburgh, Pittsburgh, Pennsylvania
- Department of Developmental Biology, University of Pittsburgh, Pittsburgh, Pennsylvania
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania
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21
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Waduthanthri KD, Montemagno C, Çetinel S. Establishment of human trabecular meshwork cell cultures using nontransplantable corneoscleral rims. ACTA ACUST UNITED AC 2019; 43:89-98. [PMID: 31410078 PMCID: PMC6667097 DOI: 10.3906/biy-1810-69] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Human trabecular meshwork (hTM) cell isolation in academic settings utilizes the motile nature of these cells, allowing them to migrate away from the explant and proliferate on distal regions of the culture substrate. Corneoscleral rims used for transplantation are a potential source of explants for the establishment of hTM cell cultures. However, cell isolation and the initiation of primary cell cultures from ocular tissues stored in Optisol-GS medium for an extended period of time (>6 days) has proven difficult, since Optisol-GS remarkably reduces cell viability and cellularity. Therefore, explants obtained from ocular tissues stored in Optisol-GS do not often provide adequate cell yield to initiate primary cell cultures if conventional culture techniques are used. Therefore, the majority of the research on primary hTM cell isolation has been accomplished using donor tissue obtained within 72 h postmortem. The goal of this study was to develop an hTM cell isolation procedure from nontransplantable ocular materials, utilizing the anchorage dependency of TM cells. This procedure yielded functionally viable cells, eficiently dissociated from the trabecular meshwork. Isolated cells demonstrated typical hTM cell characteristics including monolayer formation, contact inhibition, phagocytosis, and responses to glucocorticoid exposure. To the best of our knowledge, this is the first time an expired explant has been utilized in the successful isolation of hTM cells. Our results clearly demonstrate the advantage of increasing the anchor points of hTM cells for enhanced cell migration out from the explants, which have limited cell proliferative capacity.
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Affiliation(s)
- Kosala D Waduthanthri
- Ingenuity Lab, Department of Chemical and Materials Engineering, University of Alberta , Edmonton, AB , Canada
| | | | - Sibel Çetinel
- Ingenuity Lab, Department of Chemical and Materials Engineering, University of Alberta , Edmonton, AB , Canada
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22
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Rausch RL, Libby RT, Kiernan AE. Trabecular meshwork morphogenesis: A comparative analysis of wildtype and anterior segment dysgenesis mouse models. Exp Eye Res 2018; 170:81-91. [PMID: 29452107 DOI: 10.1016/j.exer.2018.02.011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2017] [Revised: 01/12/2018] [Accepted: 02/12/2018] [Indexed: 10/18/2022]
Abstract
The trabecular meshwork (TM), a tissue residing in the iridocorneal angle of the eye, is the primary site of aqueous humor outflow and often develops abnormally in children with anterior segment dysgenesis (ASD). However, the cellular mechanisms underlying both normal and pathophysiological TM formation are poorly understood. Here, we improve the characterization of TM development via morphological and molecular analyses. We first assessed the TM of wild-type C57BL/6J mice at multiple time points throughout development (E15.5-P21). The morphology of TM cells, rate of cell division, presence of apoptotic cell death, and age of onset of an established TM marker (αSMA) were each assessed in the developing iridocorneal angle. We discovered that TM cells are identifiable histologically at P1, which coincided with both the onset of αSMA expression and a significant decrease in TM precursor cell proliferation. Significant apoptotic cell death was not detected during TM development. These findings were then used to assess two mouse models of ASD. Jag1 and Bmp4 heterozygous null mice display ASD phenotypes in the adult, including TM hypoplasia and corneal adherence to the iris. We further discovered that both mutants exhibited similar patterns of developmental TM dysgenesis at P1, P5, and P10. Our data indicate that P1 is an important time point in TM development and that TM dysgenesis in Jag1 and Bmp4 heterozygous null mice likely results from impaired TM cell migration and/or differentiation.
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Affiliation(s)
- Rebecca L Rausch
- Neuroscience Graduate Program, University of Rochester Medical Center, Rochester, NY 14642, USA; Department of Ophthalmology, University of Rochester Medical Center, Rochester, NY 14642, USA; Center for Visual Sciences, University of Rochester Medical Center, Rochester, NY 14642, USA
| | - Richard T Libby
- Department of Ophthalmology, University of Rochester Medical Center, Rochester, NY 14642, USA; Department of Biomedical Genetics, University of Rochester Medical Center, Rochester, NY 14642, USA; Center for Visual Sciences, University of Rochester Medical Center, Rochester, NY 14642, USA
| | - Amy E Kiernan
- Department of Ophthalmology, University of Rochester Medical Center, Rochester, NY 14642, USA; Department of Biomedical Genetics, University of Rochester Medical Center, Rochester, NY 14642, USA.
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23
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Yang S, Li L, Zhang J, Geng Y, Guo F, Wang J, Meng J, Sui N, Wan S, Li X. Transcriptome and Differential Expression Profiling Analysis of the Mechanism of Ca 2+ Regulation in Peanut ( Arachis hypogaea) Pod Development. FRONTIERS IN PLANT SCIENCE 2017; 8:1609. [PMID: 29033956 PMCID: PMC5625282 DOI: 10.3389/fpls.2017.01609] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2017] [Accepted: 09/04/2017] [Indexed: 05/23/2023]
Abstract
Calcium not only serves as a necessary nutrient for plant growth but also acts as a ubiquitous central hub in a large number of signaling pathways. Free Ca2+ deficiency in the soil may cause early embryo abortion, which eventually led to abnormal development of peanut pod during the harvest season. To understand the mechanisms of Ca2+ regulation in pod development, transcriptome analysis of peanut gynophores and pods was performed by comparing the treatments between free Ca2+ sufficiency and free Ca2+ deficiency using Illumina HiSeq™ 2000. 9,903,082,800 nt bases are generated totally. After assembly, the average length of 102,819 unigenes is 999 nt, N50 is 1,782 nt. RNA-seq based gene expression profilings showed a large number of genes at the transcriptional level changed significantly between the aerial pegs and underground swelling pods under free Ca2+ sufficienct or deficiency treatments, respectively. Genes encoding key members of Ca2+ signaling transduction pathway, enzymes for hormone metabolism, cell division and growth, transcriptional factor as well as embryo development were highlighted. This information provides useful information for our further study. The results of digital gene expression (DGE) indicated that exogenous calcium might contribute to the development of peanut pod through its signal transduction pathway, meanwhile, promote the normal transition of the gynophores to the reproductive development.
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Affiliation(s)
- Sha Yang
- Biotechnology Research Center, Shandong Academy of Agricultural Sciences, Jinan, China
| | - Lin Li
- College of Agronomy, Hunan Agricultural University, Changsha, China
| | - Jialei Zhang
- Biotechnology Research Center, Shandong Academy of Agricultural Sciences, Jinan, China
| | - Yun Geng
- Biotechnology Research Center, Shandong Academy of Agricultural Sciences, Jinan, China
| | - Feng Guo
- Biotechnology Research Center, Shandong Academy of Agricultural Sciences, Jinan, China
| | - Jianguo Wang
- College of Agronomy, Hunan Agricultural University, Changsha, China
| | - Jingjing Meng
- Biotechnology Research Center, Shandong Academy of Agricultural Sciences, Jinan, China
| | - Na Sui
- College of Life Sciences, Shandong Normal University, Jinan, China
| | - Shubo Wan
- Shandong Provincial Key Laboratory of Crop Genetic Improvement, Ecology and Physiology, Shandong Academy of Agricultural Sciences, Jinan, China
| | - Xinguo Li
- Biotechnology Research Center, Shandong Academy of Agricultural Sciences, Jinan, China
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