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Liao T, Shi L, He C, Liu D, Wei Y, Ma Z, Wang P, Mao J, Wu P. Suppression of NUPR1 in fibroblast-like synoviocytes reduces synovial fibrosis via the Smad3 pathway. J Transl Med 2024; 22:715. [PMID: 39090667 PMCID: PMC11295884 DOI: 10.1186/s12967-024-05540-w] [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: 04/18/2024] [Accepted: 07/26/2024] [Indexed: 08/04/2024] Open
Abstract
BACKGROUND Synovial fibrosis is a common complication of knee osteoarthritis (KOA), a pathological process characterized by myofibroblast activation and excessive extracellular matrix (ECM) deposition. Fibroblast-like synoviocytes (FLSs) are implicated in KOA pathogenesis, contributing to synovial fibrosis through diverse mechanisms. Nuclear protein 1 (NUPR1) is a recently identified transcription factor with crucial roles in various fibrotic diseases. However, its molecular determinants in KOA synovial fibrosis remain unknown. This study aims to investigate the role of NUPR1 in KOA synovial fibrosis through in vivo and in vitro experiments. METHODS We examined NUPR1 expression in the murine synovium and determined the impact of NUPR1 on synovial fibrosis by knockdown models in the destabilization of the medial meniscus (DMM)-induced KOA mouse model. TGF-β was employed to induce fibrotic response and myofibroblast activation in mouse FLSs, and the role and molecular mechanisms in synovial fibrosis were evaluated under conditions of NUPR1 downexpression. Additionally, the pharmacological effect of NUPR1 inhibitor in synovial fibrosis was assessed using a surgically induced mouse KOA model. RESULTS We found that NUPR1 expression increased in the murine synovium after DMM surgical operation. The adeno-associated virus (AAV)-NUPR1 shRNA promoted NUPR1 deficiency, attenuating synovial fibrosis, inhibiting synovial hyperplasia, and significantly reducing the expression of pro-fibrotic molecules. Moreover, the lentivirus-mediated NUPR1 deficiency alleviated synoviocyte proliferation and inhibited fibroblast to myofibroblast transition. It also decreased the expression of fibrosis markers α-SMA, COL1A1, CTGF, Vimentin and promoted the activation of the SMAD family member 3 (SMAD3) pathway. Importantly, trifluoperazine (TFP), a NUPR1 inhibitor, attenuated synovial fibrosis in DMM mice. CONCLUSIONS These findings indicate that NUPR1 is an antifibrotic modulator in KOA, and its effect on anti-synovial fibrosis is partially mediated by SMAD3 signaling. This study reveals a promising target for developing novel antifibrotic treatment.
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Affiliation(s)
- Taiyang Liao
- Department of Orthopedics and Traumatology, Affiliated Hospital of Nanjing University of Chinese Medicine/Jiangsu Province Hospital of Chinese Medicine, Nanjing, 210029, Jiangsu, China
- Key Laboratory for Metabolic Diseases in Chinese Medicine, First College of Clinical Medicine, Nanjing University of Chinese Medicine, Nanjing, 210023, Jiangsu, China
| | - Lei Shi
- Department of Orthopedics and Traumatology, Affiliated Hospital of Nanjing University of Chinese Medicine/Jiangsu Province Hospital of Chinese Medicine, Nanjing, 210029, Jiangsu, China
- Key Laboratory for Metabolic Diseases in Chinese Medicine, First College of Clinical Medicine, Nanjing University of Chinese Medicine, Nanjing, 210023, Jiangsu, China
| | - Chenglong He
- Department of Orthopedics and Traumatology, Affiliated Hospital of Nanjing University of Chinese Medicine/Jiangsu Province Hospital of Chinese Medicine, Nanjing, 210029, Jiangsu, China
- Key Laboratory for Metabolic Diseases in Chinese Medicine, First College of Clinical Medicine, Nanjing University of Chinese Medicine, Nanjing, 210023, Jiangsu, China
| | - Deren Liu
- Department of Orthopedics and Traumatology, Affiliated Hospital of Nanjing University of Chinese Medicine/Jiangsu Province Hospital of Chinese Medicine, Nanjing, 210029, Jiangsu, China
- Key Laboratory for Metabolic Diseases in Chinese Medicine, First College of Clinical Medicine, Nanjing University of Chinese Medicine, Nanjing, 210023, Jiangsu, China
| | - Yibao Wei
- Department of Orthopedics and Traumatology, Affiliated Hospital of Nanjing University of Chinese Medicine/Jiangsu Province Hospital of Chinese Medicine, Nanjing, 210029, Jiangsu, China
- Key Laboratory for Metabolic Diseases in Chinese Medicine, First College of Clinical Medicine, Nanjing University of Chinese Medicine, Nanjing, 210023, Jiangsu, China
| | - Zhenyuan Ma
- Department of Orthopedics and Traumatology, Affiliated Hospital of Nanjing University of Chinese Medicine/Jiangsu Province Hospital of Chinese Medicine, Nanjing, 210029, Jiangsu, China
- Key Laboratory for Metabolic Diseases in Chinese Medicine, First College of Clinical Medicine, Nanjing University of Chinese Medicine, Nanjing, 210023, Jiangsu, China
| | - Peimin Wang
- Department of Orthopedics and Traumatology, Affiliated Hospital of Nanjing University of Chinese Medicine/Jiangsu Province Hospital of Chinese Medicine, Nanjing, 210029, Jiangsu, China
| | - Jun Mao
- Department of Orthopedics and Traumatology, Affiliated Hospital of Nanjing University of Chinese Medicine/Jiangsu Province Hospital of Chinese Medicine, Nanjing, 210029, Jiangsu, China.
| | - Peng Wu
- Department of Orthopedics and Traumatology, Affiliated Hospital of Nanjing University of Chinese Medicine/Jiangsu Province Hospital of Chinese Medicine, Nanjing, 210029, Jiangsu, China.
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Damerau A, Rosenow E, Alkhoury D, Buttgereit F, Gaber T. Fibrotic pathways and fibroblast-like synoviocyte phenotypes in osteoarthritis. Front Immunol 2024; 15:1385006. [PMID: 38895122 PMCID: PMC11183113 DOI: 10.3389/fimmu.2024.1385006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2024] [Accepted: 05/14/2024] [Indexed: 06/21/2024] Open
Abstract
Osteoarthritis (OA) is the most common form of arthritis, characterized by osteophyte formation, cartilage degradation, and structural and cellular alterations of the synovial membrane. Activated fibroblast-like synoviocytes (FLS) of the synovial membrane have been identified as key drivers, secreting humoral mediators that maintain inflammatory processes, proteases that cause cartilage and bone destruction, and factors that drive fibrotic processes. In normal tissue repair, fibrotic processes are terminated after the damage has been repaired. In fibrosis, tissue remodeling and wound healing are exaggerated and prolonged. Various stressors, including aging, joint instability, and inflammation, lead to structural damage of the joint and micro lesions within the synovial tissue. One result is the reduced production of synovial fluid (lubricants), which reduces the lubricity of the cartilage areas, leading to cartilage damage. In the synovial tissue, a wound-healing cascade is initiated by activating macrophages, Th2 cells, and FLS. The latter can be divided into two major populations. The destructive thymocyte differentiation antigen (THY)1─ phenotype is restricted to the synovial lining layer. In contrast, the THY1+ phenotype of the sublining layer is classified as an invasive one with immune effector function driving synovitis. The exact mechanisms involved in the transition of fibroblasts into a myofibroblast-like phenotype that drives fibrosis remain unclear. The review provides an overview of the phenotypes and spatial distribution of FLS in the synovial membrane of OA, describes the mechanisms of fibroblast into myofibroblast activation, and the metabolic alterations of myofibroblast-like cells.
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Affiliation(s)
- Alexandra Damerau
- Department of Rheumatology and Clinical Immunology, Charité – Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt Universität zu Berlin, Berlin, Germany
- German Rheumatism Research Center Berlin, a Leibniz Institute, Glucocorticoids - Bioenergetics - 3R Research Lab, Berlin, Germany
| | - Emely Rosenow
- Department of Rheumatology and Clinical Immunology, Charité – Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt Universität zu Berlin, Berlin, Germany
| | - Dana Alkhoury
- Department of Rheumatology and Clinical Immunology, Charité – Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt Universität zu Berlin, Berlin, Germany
| | - Frank Buttgereit
- Department of Rheumatology and Clinical Immunology, Charité – Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt Universität zu Berlin, Berlin, Germany
- German Rheumatism Research Center Berlin, a Leibniz Institute, Glucocorticoids - Bioenergetics - 3R Research Lab, Berlin, Germany
| | - Timo Gaber
- Department of Rheumatology and Clinical Immunology, Charité – Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt Universität zu Berlin, Berlin, Germany
- German Rheumatism Research Center Berlin, a Leibniz Institute, Glucocorticoids - Bioenergetics - 3R Research Lab, Berlin, Germany
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Yue W, Zhang H, Gao Y, Ding J, Xue R, Dong C, Liu F, Yang L, Yang L, Li L. Procollagen-lysine 2-oxoglutarate 5-dioxygenase 2 promotes collagen cross-linking and ECM stiffening to induce liver fibrosis. Biochim Biophys Acta Mol Basis Dis 2024; 1870:167205. [PMID: 38696846 DOI: 10.1016/j.bbadis.2024.167205] [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: 06/27/2023] [Revised: 04/10/2024] [Accepted: 04/23/2024] [Indexed: 05/04/2024]
Abstract
Procollagen-lysine 2-oxoglutarate 5-dioxygenase 2 (Plod2) is a key collagen lysyl hydroxylase mediating the formation of collagen fiber and stabilized collagen cross-links, and has been identified in several forms of fibrosis. However, the potential role and regulatory mechanism of Plod2 in liver fibrosis remain unclear yet. Mouse liver fibrosis models were induced by injecting carbon tetrachloride (CCl4) intraperitoneally. The morphology and alignment of collagen was observed under transmission and scanning electron microscopy, and extracellular matrix (ECM) stiffness was measured by atomic force microscopy. Large amounts of densely packed fibrillar collagen fibers produced by myofibroblasts (MFs) were deposited in fibrotic liver of mice reaching very large diameters in the cross section, accompanied with ECM stiffening, which was positively correlated with collagen-crosslinking. The expression of Plod2 was dynamically up-regulated in fibrotic liver of mouse and human. In MFs transfection of Plod2 siRNA made collagen fibers more orderly and linear aligned which can be easily degraded and protected from ECM stiffness. Administration of Plod2 siRNA preventatively or therapeutically in CCl4 mice reduced the average size of collagen bundles in transverse section, increased collagen solubility, decreases the levels of crosslinking products hydroxylysylpyridinoline and lysylpyridinoline, prevented ECM stiffening and alleviated liver fibrosis. Altogether, Plod2 mediates the formation of stabilized profibrotic collagen cross-links in MFs, leading to the alteration of collagen solubility and ECM stiffness, and eventually aggravates liver fibrosis, which provide potential target for the treatment of liver disease.
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Affiliation(s)
- Wenhui Yue
- Department of Cell Biology, Municipal Laboratory for Liver Protection and Regulation of Regeneration, Capital Medical University, Beijing 100069, China
| | - Hang Zhang
- Department of Cell Biology, Municipal Laboratory for Liver Protection and Regulation of Regeneration, Capital Medical University, Beijing 100069, China
| | - Yue Gao
- Department of Cell Biology, Municipal Laboratory for Liver Protection and Regulation of Regeneration, Capital Medical University, Beijing 100069, China
| | - Jingru Ding
- Department of Cell Biology, Municipal Laboratory for Liver Protection and Regulation of Regeneration, Capital Medical University, Beijing 100069, China
| | - Renmin Xue
- Department of Cell Biology, Municipal Laboratory for Liver Protection and Regulation of Regeneration, Capital Medical University, Beijing 100069, China
| | - Chengbin Dong
- Department of Interventional Therapy, Beijing Shijitan Hospital, Capital Medical University, Beijing 100069, China
| | - Fuquan Liu
- Department of Interventional Therapy, Beijing Shijitan Hospital, Capital Medical University, Beijing 100069, China
| | - Lin Yang
- Department of Cell Biology, Municipal Laboratory for Liver Protection and Regulation of Regeneration, Capital Medical University, Beijing 100069, China
| | - Le Yang
- Department of Cell Biology, Municipal Laboratory for Liver Protection and Regulation of Regeneration, Capital Medical University, Beijing 100069, China.
| | - Liying Li
- Department of Cell Biology, Municipal Laboratory for Liver Protection and Regulation of Regeneration, Capital Medical University, Beijing 100069, China.
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Yan W, Wu Y, Zhao F, Dai R, Zhou Y, Liu D, Cheng J, Hu X, Ao Y. Anti-Apoptosis Therapy for Meniscal Avascular Zone Repair: A Proof-of-Concept Study in a Lapine Model. Bioengineering (Basel) 2023; 10:1422. [PMID: 38136013 PMCID: PMC10740472 DOI: 10.3390/bioengineering10121422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Revised: 11/28/2023] [Accepted: 12/11/2023] [Indexed: 12/24/2023] Open
Abstract
In the present study, 24 rabbits were firstly used to evaluate the apoptosis index and matrix degeneration after untreated adult meniscal tears. Vertical tears (0.25 cm in length) were prepared in the avascular zone of the anterior horn. Specimens were harvested at 1, 3, 6, 12 weeks postoperatively. The apoptosis index around tear sites stayed at a high level throughout the whole follow-up period. The depletion of glycosaminoglycans (GAG) and aggrecan at the tear site was observed, while the deposition of COL I and COL II was not affected, even at the last follow-up of 12 weeks after operation. The expression of SOX9 decreased significantly; no cellularity was observed at the wound interface at all timepoints. Secondly, another 20 rabbits were included to evaluate the effects of anti-apoptosis therapy on rescuing meniscal cells and enhancing meniscus repair. Longitudinal vertical tears (0.5 cm in length) were made in the meniscal avascular body. Tears were repaired by the inside-out suture technique, or repaired with sutures in addition to fibrin gel and blank silica nanoparticles, or silica nanoparticles encapsulating apoptosis inhibitors (z-vad-fmk). Samples were harvested at 12 months postoperatively. We found the locally administered z-vad-fmk agent at the wound interface significantly alleviated meniscal cell apoptosis and matrix degradation, and enhanced meniscal repair in the avascular zone at 12 months after operation. Thus, local administration of caspase inhibitors (z-vad-fmk) is a promising therapeutic strategy for alleviating meniscal cell loss and enhancing meniscal repair after adult meniscal tears in the avascular zone.
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Affiliation(s)
- Wenqiang Yan
- Department of Sports Medicine, Peking University Third Hospital, Institute of Sports Medicine of Peking University, Beijing 100191, China; (W.Y.); (Y.W.); (F.Z.); (R.D.); (Y.Z.); (D.L.); (J.C.)
- Beijing Key Laboratory of Sports Injuries, Beijing 100191, China
- Engineering Research Center of Sports Trauma Treatment Technology and Devices, Ministry of Education, Beijing 100191, China
| | - Yue Wu
- Department of Sports Medicine, Peking University Third Hospital, Institute of Sports Medicine of Peking University, Beijing 100191, China; (W.Y.); (Y.W.); (F.Z.); (R.D.); (Y.Z.); (D.L.); (J.C.)
- Beijing Key Laboratory of Sports Injuries, Beijing 100191, China
- Engineering Research Center of Sports Trauma Treatment Technology and Devices, Ministry of Education, Beijing 100191, China
| | - Fengyuan Zhao
- Department of Sports Medicine, Peking University Third Hospital, Institute of Sports Medicine of Peking University, Beijing 100191, China; (W.Y.); (Y.W.); (F.Z.); (R.D.); (Y.Z.); (D.L.); (J.C.)
- Beijing Key Laboratory of Sports Injuries, Beijing 100191, China
- Engineering Research Center of Sports Trauma Treatment Technology and Devices, Ministry of Education, Beijing 100191, China
| | - Ruilan Dai
- Department of Sports Medicine, Peking University Third Hospital, Institute of Sports Medicine of Peking University, Beijing 100191, China; (W.Y.); (Y.W.); (F.Z.); (R.D.); (Y.Z.); (D.L.); (J.C.)
- Beijing Key Laboratory of Sports Injuries, Beijing 100191, China
- Engineering Research Center of Sports Trauma Treatment Technology and Devices, Ministry of Education, Beijing 100191, China
| | - Yunan Zhou
- Department of Sports Medicine, Peking University Third Hospital, Institute of Sports Medicine of Peking University, Beijing 100191, China; (W.Y.); (Y.W.); (F.Z.); (R.D.); (Y.Z.); (D.L.); (J.C.)
- Beijing Key Laboratory of Sports Injuries, Beijing 100191, China
- Engineering Research Center of Sports Trauma Treatment Technology and Devices, Ministry of Education, Beijing 100191, China
| | - Dingge Liu
- Department of Sports Medicine, Peking University Third Hospital, Institute of Sports Medicine of Peking University, Beijing 100191, China; (W.Y.); (Y.W.); (F.Z.); (R.D.); (Y.Z.); (D.L.); (J.C.)
- Beijing Key Laboratory of Sports Injuries, Beijing 100191, China
- Engineering Research Center of Sports Trauma Treatment Technology and Devices, Ministry of Education, Beijing 100191, China
| | - Jin Cheng
- Department of Sports Medicine, Peking University Third Hospital, Institute of Sports Medicine of Peking University, Beijing 100191, China; (W.Y.); (Y.W.); (F.Z.); (R.D.); (Y.Z.); (D.L.); (J.C.)
- Beijing Key Laboratory of Sports Injuries, Beijing 100191, China
- Engineering Research Center of Sports Trauma Treatment Technology and Devices, Ministry of Education, Beijing 100191, China
| | - Xiaoqing Hu
- Department of Sports Medicine, Peking University Third Hospital, Institute of Sports Medicine of Peking University, Beijing 100191, China; (W.Y.); (Y.W.); (F.Z.); (R.D.); (Y.Z.); (D.L.); (J.C.)
- Beijing Key Laboratory of Sports Injuries, Beijing 100191, China
- Engineering Research Center of Sports Trauma Treatment Technology and Devices, Ministry of Education, Beijing 100191, China
| | - Yingfang Ao
- Department of Sports Medicine, Peking University Third Hospital, Institute of Sports Medicine of Peking University, Beijing 100191, China; (W.Y.); (Y.W.); (F.Z.); (R.D.); (Y.Z.); (D.L.); (J.C.)
- Beijing Key Laboratory of Sports Injuries, Beijing 100191, China
- Engineering Research Center of Sports Trauma Treatment Technology and Devices, Ministry of Education, Beijing 100191, China
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Zhou C, Yang Y, Duan M, Chen C, Pi C, Zhang D, Liu X, Xie J. Biomimetic Fibers Based on Equidistant Micropillar Arrays Determines Chondrocyte Fate via Mechanoadaptability. Adv Healthc Mater 2023; 12:e2301685. [PMID: 37596884 DOI: 10.1002/adhm.202301685] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Revised: 08/02/2023] [Indexed: 08/20/2023]
Abstract
It is recognized that the changes in the physical properties of extracellular matrix (ECM) result in fine-tuned cell responses including cell morphology, proliferation and differentiation. In this study, a novel patterned equidistant micropillar substrate based on polydimethylsiloxane (PDMS) is designed to mimic the collagen fiber-like network of the cartilage matrix. By changing the component of the curing agent to an oligomeric base, micropillar substrates with the same topology but different stiffnesses are obtained and it is found that chondrocytes seeded onto the soft micropillar substrate maintain their phenotype by gathering type II collagen and aggrecan more effectively than those seeded onto the stiff micropillar substrate. Moreover, chondrocytes sense and respond to micropillar substrates with different stiffnesses by altering the ECM-cytoskeleton-focal adhesion axis. Further, it is found that the soft substrate-preserved chondrocyte phenotype is dependent on the activation of Wnt/β-catenin signaling. Finally, it is indicated that the changes in osteoid-like region formation and cartilage phenotype loss in the stiffened sclerotic area of osteoarthritis cartilage to validate the changes triggered by micropillar substrates with different stiffnesses. This study provides the cell behavior changes that are more similar to those of real chondrocytes at tissue level during the transition from a normal state to a state of osteoarthritis.
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Affiliation(s)
- Chenchen Zhou
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, 610064, China
- National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, 610064, China
| | - Yueyi Yang
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, 610064, China
| | - Mengmeng Duan
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, 610064, China
| | - Cheng Chen
- College of Medical Informatics, Chongqing Medical University, Chongqing, 400016, China
| | - Caixia Pi
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, 610064, China
| | - Demao Zhang
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, 610064, China
- Institute of Biomedical Engineering, West China School of Basic Medical Sciences & Forensic Medicine, Sichuan University, Chengdu, 610064, China
| | - Xiaoheng Liu
- Institute of Biomedical Engineering, West China School of Basic Medical Sciences & Forensic Medicine, Sichuan University, Chengdu, 610064, China
| | - Jing Xie
- State Key Laboratory of Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, 610064, China
- National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, 610064, China
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Yan W, Zhu J, Wu Y, Wang Y, Du C, Cheng J, Hu X, Ao Y. Meniscal Fibrocartilage Repair Based on Developmental Characteristics: A Proof-of-Concept Study. Am J Sports Med 2023; 51:3509-3522. [PMID: 37743771 DOI: 10.1177/03635465231194028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 09/26/2023]
Abstract
BACKGROUND Unlike the adult meniscus, the fetal meniscus possesses robust healing capacity. The dense and stiff matrix of the adult meniscus provides a biophysical barrier for cell migration, which is not present in the fetal meniscus. Inspired by developmental characteristics, modifying the matrix of the adult meniscus into a fetal-like, loose and soft microenvironment holds opportunity to facilitate repair, especially in the avascular zone. HYPOTHESIS Modifying the dense and stiff matrix of the adult meniscus into a fetal-like, loose and soft microenvironment could enhance cell migration to the tear interface and subsequent robust healing capacity. STUDY DESIGN Controlled laboratory study. METHODS Fresh porcine menisci were treated with hyaluronidase or collagenase. The density and arrangement of collagen fibers were assessed. The degradation of proteoglycans and collagen was evaluated histologically. Cell migration within the meniscus or the infiltration of exogenous cells into the meniscus was examined. Dendritic silica nanoparticles with relatively large pores were used to encapsulate hyaluronidase for rapid release. Mesoporous silica nanoparticles with relatively small pores were used to encapsulate transforming growth factor-beta 3 (TGF-β3) for slow release. A total of 24 mature male rabbits were included. A longitudinal vertical tear (0.5 cm in length) was prepared in the avascular zone of the medial meniscus. The tear was repaired with suture, repaired with suture in addition to blank silica nanoparticles, or repaired with suture in addition to silica nanoparticles releasing hyaluronidase and TGF-β3. Animals were sacrificed at 12 months postoperatively. Meniscal repair was evaluated macroscopically and histologically. RESULTS The gaps between collagen bundles increased after hyaluronidase treatment, while collagenase treatment resulted in collagen disruption. Proteoglycans degraded after hyaluronidase treatment in a dose-dependent manner, but collagen integrity was maintained. Hyaluronidase treatment enhanced the migration and infiltration of cells within meniscal tissue. Last, the application of fibrin gel and the delivery system of silica nanoparticles encapsulating hyaluronidase and TGF-β3 enhanced meniscal repair responses in an orthotopic longitudinal vertical tear model. CONCLUSION The gradient release of hyaluronidase and TGF-β3 removed biophysical barriers for cell migration, creating a fetal-like, loose and soft microenvironment, and enhanced the fibrochondrogenic phenotype of reparative cells, facilitating the synthesis of matrix and tissue integration. CLINICAL RELEVANCE Modifying the adult matrix into a fetal-like, loose and soft microenvironment via the local gradient release of hyaluronidase and TGF-β3 enhanced the healing capacity of the meniscus.
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Affiliation(s)
- Wenqiang Yan
- Department of Sports Medicine, Institute of Sports Medicine, Peking University Third Hospital, Peking University, Beijing, China
- Beijing Key Laboratory of Sports Injuries, Beijing, China
- Engineering Research Center of Sports Trauma Treatment Technology and Devices, Ministry of Education, Beijing, China
| | - Jingxian Zhu
- Department of Sports Medicine, Institute of Sports Medicine, Peking University Third Hospital, Peking University, Beijing, China
- Beijing Key Laboratory of Sports Injuries, Beijing, China
- Engineering Research Center of Sports Trauma Treatment Technology and Devices, Ministry of Education, Beijing, China
| | - Yue Wu
- Department of Sports Medicine, Institute of Sports Medicine, Peking University Third Hospital, Peking University, Beijing, China
- Beijing Key Laboratory of Sports Injuries, Beijing, China
- Engineering Research Center of Sports Trauma Treatment Technology and Devices, Ministry of Education, Beijing, China
| | - Yiqun Wang
- Department of Sports Medicine, Institute of Sports Medicine, Peking University Third Hospital, Peking University, Beijing, China
- Beijing Key Laboratory of Sports Injuries, Beijing, China
- Engineering Research Center of Sports Trauma Treatment Technology and Devices, Ministry of Education, Beijing, China
| | - Cancan Du
- Department of Sports Medicine, Institute of Sports Medicine, Peking University Third Hospital, Peking University, Beijing, China
- Beijing Key Laboratory of Sports Injuries, Beijing, China
- Engineering Research Center of Sports Trauma Treatment Technology and Devices, Ministry of Education, Beijing, China
| | - Jin Cheng
- Department of Sports Medicine, Institute of Sports Medicine, Peking University Third Hospital, Peking University, Beijing, China
- Beijing Key Laboratory of Sports Injuries, Beijing, China
- Engineering Research Center of Sports Trauma Treatment Technology and Devices, Ministry of Education, Beijing, China
| | - Xiaoqing Hu
- Department of Sports Medicine, Institute of Sports Medicine, Peking University Third Hospital, Peking University, Beijing, China
- Beijing Key Laboratory of Sports Injuries, Beijing, China
- Engineering Research Center of Sports Trauma Treatment Technology and Devices, Ministry of Education, Beijing, China
| | - Yingfang Ao
- Department of Sports Medicine, Institute of Sports Medicine, Peking University Third Hospital, Peking University, Beijing, China
- Beijing Key Laboratory of Sports Injuries, Beijing, China
- Engineering Research Center of Sports Trauma Treatment Technology and Devices, Ministry of Education, Beijing, China
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Haartmans MJJ, Claes BSR, Eijkel GB, Emanuel KS, Tuijthof GJM, Heeren RMA, Emans PJ, Cillero-Pastor B. Matrix-assisted laser desorption/ionization mass spectrometry imaging (MALDI-MSI) reveals potential lipid markers between infrapatellar fat pad biopsies of osteoarthritis and cartilage defect patients. Anal Bioanal Chem 2023; 415:5997-6007. [PMID: 37505238 PMCID: PMC10556153 DOI: 10.1007/s00216-023-04871-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Revised: 07/12/2023] [Accepted: 07/14/2023] [Indexed: 07/29/2023]
Abstract
The incidence of osteoarthritis (OA) has been expected to increase due to an aging population, as well as an increased incidence of intra-articular (osteo-) chondral damage. Lipids have already been shown to be involved in the inflammatory process of OA. This study aims at revealing region-specific lipid profiles of the infrapatellar fat pad (IPFP) of OA or cartilage defect patients by matrix-assisted laser desorption/ionization mass spectrometry imaging (MALDI-MSI), which could be used as biomarkers for early OA detection. A higher presence of phospholipids was found in OA patients compared with cartilage defect patients. In addition, a higher abundance of ether-linked phosphatidylethanolamines (PE O-s) containing arachidonic acid was specifically found in OA patients compared with cartilage defect patients. These lipids were mainly found in the connective tissue of the IPFP. Specific lipid species were associated to OA patients compared with cartilage defect patients. PE O-s have been suggested as possible biomarkers for OA. As these were found more abundantly in the connective tissue, the IPFP's intra-tissue heterogeneity might play an important role in biomarker discovery, implying that the amount of fibrous tissue is associated with OA.
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Affiliation(s)
- Mirella J J Haartmans
- Division of Imaging Mass Spectrometry, Maastricht MultiModal Molecular Imaging Institute (M4i), Maastricht University, Maastricht, the Netherlands
- Laboratory for Experimental Orthopedics, Department of Orthopedic Surgery, Joint Preserving Clinic, CAPHRI Care and Public Health Research Institute, Maastricht University Medical Center+, Maastricht, the Netherlands
| | - Britt S R Claes
- Division of Imaging Mass Spectrometry, Maastricht MultiModal Molecular Imaging Institute (M4i), Maastricht University, Maastricht, the Netherlands
| | - Gert B Eijkel
- Division of Imaging Mass Spectrometry, Maastricht MultiModal Molecular Imaging Institute (M4i), Maastricht University, Maastricht, the Netherlands
| | - Kaj S Emanuel
- Laboratory for Experimental Orthopedics, Department of Orthopedic Surgery, Joint Preserving Clinic, CAPHRI Care and Public Health Research Institute, Maastricht University Medical Center+, Maastricht, the Netherlands
- Department of Orthopedic Surgery and Sport Medicine, Amsterdam Movement Sciences, Amsterdam UMC, Amsterdam, the Netherlands
| | - Gabrielle J M Tuijthof
- Biomedical Device Design and Production Technology, Faculty of Engineering Technology, University of Twente, Enschede, the Netherlands
| | - Ron M A Heeren
- Division of Imaging Mass Spectrometry, Maastricht MultiModal Molecular Imaging Institute (M4i), Maastricht University, Maastricht, the Netherlands
| | - Pieter J Emans
- Laboratory for Experimental Orthopedics, Department of Orthopedic Surgery, Joint Preserving Clinic, CAPHRI Care and Public Health Research Institute, Maastricht University Medical Center+, Maastricht, the Netherlands
| | - Berta Cillero-Pastor
- Division of Imaging Mass Spectrometry, Maastricht MultiModal Molecular Imaging Institute (M4i), Maastricht University, Maastricht, the Netherlands.
- MERLN Institute for Technology-Inspired Regenerative Medicine, Department of Cell Biology-Inspired Tissue Engineering (cBITE), Maastricht University, Universiteitssingel 40, 6229 ER, Maastricht, the Netherlands.
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Sarkovich S, Issa PP, Longanecker A, Martin D, Redondo K, McTernan P, Simkin J, Marrero L. Minoxidil weakens newly synthesized collagen in fibrotic synoviocytes from osteoarthritis patients. J Exp Orthop 2023; 10:84. [PMID: 37605092 PMCID: PMC10441905 DOI: 10.1186/s40634-023-00650-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Accepted: 08/09/2023] [Indexed: 08/23/2023] Open
Abstract
PURPOSE Synovial fibrosis (SFb) formation and turnover attributable to knee osteoarthritis (KOA) can impart painful stiffness and persist following arthroplasty. To supplement joint conditioning aimed at maximizing peri-operative function, we evaluated the antifibrotic effect of Minoxidil (MXD) on formation of pyridinoline (Pyd) cross-links catalyzed by Plod2-encoded lysyl hydroxylase (LH)2b that strengthen newly synthesized type-I collagen (COL1) in fibroblastic synovial cells (FSCs) from KOA patients. MXD was predicted to decrease Pyd without significant alterations to Col1a1 transcription by FSCs stimulated with transforming growth factor (TGF)β1. METHODS Synovium from 10 KOA patients grouped by SFb severity was preserved for picrosirius and LH2b histology or culture. Protein and RNA were purified from fibrotic FSCs after 8 days with or without 0.5 µM MXD and/or 4 ng/mL of TGFβ1. COL1 and Pyd protein concentrations from ELISA and expression of Col1a1, Acta2, and Plod2 genes by qPCR were compared by parametric tests with α = 0.05. RESULTS Histological LH2b expression corresponded to SFb severity. MXD attenuated COL1 output in KOA FSCs but only in the absence of TGFβ1 and consistently decreased Pyd under all conditions with significant downregulation of Plod2 but minimal alterations to Col1a1 and Acta2 transcripts. CONCLUSIONS MXD is an attractive candidate for local antifibrotic pharmacotherapy for SFb by compromising the integrity of newly formed fibrous deposits by FSCs during KOA and following arthroplasty. Targeted antifibrotic supplementation could improve physical therapy and arthroscopic lysis strategies aimed at breaking down joint scarring. However, the effect of MXD on other joint-specific TGFβ1-mediated processes or non-fibrotic components requires further investigation.
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Affiliation(s)
- Stefan Sarkovich
- Department of Orthopaedic Surgery, Louisiana State University Health Sciences Center, 2021 Perdido St., Center for Advanced Learning and Simulation, 7th floor, New Orleans, LA, 70112, USA
| | - Peter P Issa
- School of Medicine, Louisiana State University Health Sciences Center, 2020 Gravier St., Lions Building, 5th floor, New Orleans, LA, 70112, USA
| | - Andrew Longanecker
- School of Medicine, Louisiana State University Health Sciences Center, 2020 Gravier St., Lions Building, 5th floor, New Orleans, LA, 70112, USA
| | - Davis Martin
- School of Medicine, Louisiana State University Health Sciences Center, 2020 Gravier St., Lions Building, 5th floor, New Orleans, LA, 70112, USA
| | - Kaitlyn Redondo
- Morphology and Imaging Core, Louisiana State University Health Sciences Center, 533 Bolivar St., Clinical Sciences Research Building, 5th floor, New Orleans, LA, 70112, USA
| | - Patrick McTernan
- Department of Physiology, Louisiana State University Health Sciences Center, 533 Bolivar St., Clinical Sciences Research Building, 4th floor, New Orleans, LA, 70112, USA
| | - Jennifer Simkin
- Department of Orthopaedic Surgery, Louisiana State University Health Sciences Center, 2021 Perdido St., Center for Advanced Learning and Simulation, 7th floor, New Orleans, LA, 70112, USA
| | - Luis Marrero
- Department of Orthopaedic Surgery, Louisiana State University Health Sciences Center, 2021 Perdido St., Center for Advanced Learning and Simulation, 7th floor, New Orleans, LA, 70112, USA.
- School of Medicine, Louisiana State University Health Sciences Center, 2020 Gravier St., Lions Building, 5th floor, New Orleans, LA, 70112, USA.
- Morphology and Imaging Core, Louisiana State University Health Sciences Center, 533 Bolivar St., Clinical Sciences Research Building, 5th floor, New Orleans, LA, 70112, USA.
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9
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Ding L, Liao T, Yang N, Wei Y, Xing R, Wu P, Li X, Mao J, Wang P. Chrysin ameliorates synovitis and fibrosis of osteoarthritic fibroblast-like synoviocytes in rats through PERK/TXNIP/NLRP3 signaling. Front Pharmacol 2023; 14:1170243. [PMID: 37021049 PMCID: PMC10067567 DOI: 10.3389/fphar.2023.1170243] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Accepted: 03/09/2023] [Indexed: 04/07/2023] Open
Abstract
Objective: Synovitis and fibrosis are common pathological features of knee osteoarthritis (KOA). The interaction of synovitis and fibrosis can promote KOA progression. Chrysin (CHR), a natural flavonoid, may treat inflammation and prevent fibrosis. However, the effect and mechanism of CHR in KOA synovitis and fibrosis remains unclear. Methods: The KOA model was established in male SD rats by anterior cruciate ligament transection (ACLT), and histological analysis was used to evaluate synovitis and fibrosis. IL-6, IL-1β and TNF-α mRNA expression in synovial tissue was measured by qRT‒PCR. Immunohistochemistry (IHC) was performed to detect GRP78, ATF-6 and TXNIP expression in vivo. Synovial fibroblasts (SFs) were treated with TGF-β1 to stimulate the inflammatory response and fibrosis. CCK-8 assays were used to detect the viability of CHR-treated SFs. The IL-1β level was detected by immunofluorescence analysis. Coimmunoprecipitation (Co-IP) and double immunofluorescence colocalization were used to detect the physiological interaction between TXNIP and NLRP3. The expression of fibrosis-related mediators and PERK/TXNIP/NLRP3 signaling molecules was detected by western blotting and qRT-PCR. Results: Four weeks after CHR treatment, pathological sections and associated scores showed that CHR improved synovitis and fibrosis in the ACLT model. In vitro, CHR attenuated the TGF-β1-induced inflammatory response and fibrosis in SFs. Moreover, CHR suppressed the expression of synovial fibrosis markers and PERK/TXNIP/NLRP3 signaling molecules in the synovial tissue of rats with ACLT and cultured SFs. More importantly, we found that CHR inhibited TXNIP-NLRP3 interactions in TGF-β-induced SFs. Conclusion: Our findings indicate that CHR can ameliorate synovitis and fibrosis in KOA. The underlying mechanism may be related to the PERK/TXNIP/NLRP3 signaling pathway.
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Affiliation(s)
- Liang Ding
- Department of Orthopedics, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, Liaoning, China
- Jiangsu Province Hospital of Chinese Medicine, Nanjing, Jiangsu, China
| | - Taiyang Liao
- Department of Orthopedics, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, Liaoning, China
- Jiangsu Province Hospital of Chinese Medicine, Nanjing, Jiangsu, China
- Key Laboratory for Metabolic Diseases in Chinese Medicine, First College of Clinical Medicine, Nanjing University of Chinese Medicine, Nanjing, China
| | - Nan Yang
- Department of Orthopedics, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, Liaoning, China
- Jiangsu Province Hospital of Chinese Medicine, Nanjing, Jiangsu, China
- Key Laboratory for Metabolic Diseases in Chinese Medicine, First College of Clinical Medicine, Nanjing University of Chinese Medicine, Nanjing, China
| | - Yibao Wei
- Department of Orthopedics, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, Liaoning, China
- Jiangsu Province Hospital of Chinese Medicine, Nanjing, Jiangsu, China
- Key Laboratory for Metabolic Diseases in Chinese Medicine, First College of Clinical Medicine, Nanjing University of Chinese Medicine, Nanjing, China
| | - Runlin Xing
- Department of Orthopedics, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, Liaoning, China
- Jiangsu Province Hospital of Chinese Medicine, Nanjing, Jiangsu, China
| | - Peng Wu
- Department of Orthopedics, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, Liaoning, China
- Jiangsu Province Hospital of Chinese Medicine, Nanjing, Jiangsu, China
| | - Xiaochen Li
- Department of Orthopedics, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, Liaoning, China
- Jiangsu Province Hospital of Chinese Medicine, Nanjing, Jiangsu, China
| | - Jun Mao
- Department of Orthopedics, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, Liaoning, China
- Jiangsu Province Hospital of Chinese Medicine, Nanjing, Jiangsu, China
- *Correspondence: Jun Mao, ; Peimin Wang,
| | - Peimin Wang
- Department of Orthopedics, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, Liaoning, China
- Jiangsu Province Hospital of Chinese Medicine, Nanjing, Jiangsu, China
- *Correspondence: Jun Mao, ; Peimin Wang,
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10
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Guo H, Huang J, Liang Y, Wang D, Zhang H. Focusing on the hypoxia-inducible factor pathway: role, regulation, and therapy for osteoarthritis. Eur J Med Res 2022; 27:288. [PMID: 36503684 PMCID: PMC9743529 DOI: 10.1186/s40001-022-00926-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2022] [Accepted: 12/02/2022] [Indexed: 12/14/2022] Open
Abstract
Osteoarthritis (OA) is a common chronic disabling disease that affects hundreds of millions of people around the world. The most important pathological feature is the rupture and loss of articular cartilage, and the characteristics of avascular joint tissues lead to limited repair ability. Currently, there is no effective treatment to prevent cartilage degeneration. Studies on the mechanism of cartilage metabolism revealed that hypoxia-inducible factors (HIFs) are key regulatory genes that maintain the balance of cartilage catabolism-matrix anabolism and are considered to be the major OA regulator and promising OA treatment target. Although the exact mechanism of HIFs in OA needs to be further clarified, many drugs that directly or indirectly act on HIF signaling pathways have been confirmed by animal experiments and regarded as promising treatments for OA. Targeting HIFs will provide a promising strategy for the development of new OA drugs. This article reviews the regulation of HIFs on intra-articular cartilage homeostasis and its influence on the progression of osteoarthritis and summarizes the recent advances in OA therapies targeting the HIF system.
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Affiliation(s)
- Hanhan Guo
- grid.263817.90000 0004 1773 1790Department of Biomedical Engineering, Southern University of Science and Technology, Shenzhen, 518055 China
| | - Jianghong Huang
- grid.452847.80000 0004 6068 028XDepartment of Spine Surgery and Orthopedics, Shenzhen Second People’s Hospital (First Affiliated Hospital of Shenzhen University, Health Science Center), Shenzhen, 518035 China ,grid.12527.330000 0001 0662 3178Innovation Leading Engineering Doctor, Tsinghua University Shenzhen International Graduate School, Class 9 of 2020, Shenzhen, 518055 China
| | - Yujie Liang
- grid.452897.50000 0004 6091 8446Department of Child and Adolescent Psychiatry, Shenzhen Kangning Hospital, Shenzhen Mental Health Center, Shenzhen, 518020 China
| | - Daping Wang
- grid.263817.90000 0004 1773 1790Department of Biomedical Engineering, Southern University of Science and Technology, Shenzhen, 518055 China ,grid.452847.80000 0004 6068 028XDepartment of Orthopedics, Shenzhen Intelligent Orthopaedics and Biomedical Innovation Platform, Guangdong Provincial Research Center for Artificial Intelligence and Digital Orthopedic Technology, Shenzhen Second People’s Hospital, The First Affiliated Hospital of Shenzhen University, Shenzhen, 518000 China
| | - Huawei Zhang
- grid.263817.90000 0004 1773 1790Department of Biomedical Engineering, Southern University of Science and Technology, Shenzhen, 518055 China ,grid.263817.90000 0004 1773 1790Guangdong Provincial Key Laboratory of Advanced Biomaterials, Southern University of Science and Technology, Shenzhen, 518055 China
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11
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Sarkar A, Chakraborty D, Kumar V, Malhotra R, Biswas S. Upregulation of leucine-rich alpha-2 glycoprotein: A key regulator of inflammation and joint fibrosis in patients with severe knee osteoarthritis. Front Immunol 2022; 13:1028994. [PMID: 36569927 PMCID: PMC9768428 DOI: 10.3389/fimmu.2022.1028994] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2022] [Accepted: 11/14/2022] [Indexed: 12/12/2022] Open
Abstract
Introduction Osteoarthritis (OA) is a degenerative disease of the joints mainly affecting older individuals. Since the etiology behind the progression of OA is not well understood, several associated consequences, such as synovial joint stiffness and its progression due to joint fibrosis, are still poorly understood. Although a lot of developments have been achieved in the diagnosis and management of OA, synovial fibrosis remains one of the major challenging consequences. The present study was therefore focused on understanding the mechanism of synovial fibrosis, which may further contribute to improving symptomatic treatments, leading to overall improvements in the treatment outcomes of patients with OA. Methods We used advanced proteomic techniques including isobaric tag for relative and absolute quantitation and sequential window acquisition of all theoretical mass spectra for the identification of differentially expressed proteins in the plasma samples of patients with OA. An in silico study was carried out to evaluate the association of the identified proteins with their biological processes related to fibrosis and remodeling of the extracellular matrix (ECM). The most significantly upregulated protein was then validated by Western blot and enzyme-linked immunosorbent assay. The target protein was then further investigated for its role in inflammation and joint fibrosis using an in vitro study model. Results Leucine-rich alpha-2 glycoprotein (LRG1) was found to be the most highly differentially expressed upregulated (9.4-fold) protein in the plasma samples of patients with OA compared to healthy controls. The knockdown of LRG1 followed by in vitro studies revealed that this protein promotes the secretion of the ECM in synovial cells and actively plays a role in wound healing and cell migration. The knockdown of LRG1 further confirmed the reduction of the inflammatory- and fibrosis-related markers in primary cells. Conclusion LRG1 was identified as a highly significant upregulated protein in the plasma samples of patients with OA. It was found to be associated with increased fibrosis and cell migration, leading to enhanced inflammation and joint stiffness in OA pathogenesis.
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Affiliation(s)
- Ashish Sarkar
- Council of Scientific and Industrial Research (CSIR)-Institute of Genomics and Integrative Biology, Delhi University, Delhi, India,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, India
| | - Debolina Chakraborty
- Council of Scientific and Industrial Research (CSIR)-Institute of Genomics and Integrative Biology, Delhi University, Delhi, India,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, India
| | - Vijay Kumar
- All India Institute of Medical Sciences, New Delhi, India
| | | | - Sagarika Biswas
- Council of Scientific and Industrial Research (CSIR)-Institute of Genomics and Integrative Biology, Delhi University, Delhi, India,*Correspondence: Sagarika Biswas,
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12
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Hu Y, Cui J, Liu H, Wang S, Zhou Q, Zhang H, Guo J, Cao L, Chen X, Xu K, Su J. Single-cell RNA-sequencing analysis reveals the molecular mechanism of subchondral bone cell heterogeneity in the development of osteoarthritis. RMD Open 2022. [PMCID: PMC9462384 DOI: 10.1136/rmdopen-2022-002314] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
Abstract
The cellular composition and underlying spatiotemporal transformation processes of subchondral bone in osteoarthritis (OA) remain unknown. Herein, various cell subsets from tibial plateau of patients with OA are identified, and the mechanism of subchondral microstructure alteration is elaborated using single-cell RNA sequencing technique. We identified two novel endothelial cell (EC) populations characterised by either exosome synthesis and inflammation response or vascular function and angiogenesis. Three osteoblast (OB) subtypes are introduced, separately related to vascularisation, matrix manufacturing and matrix mineralisation. The distinct roles and functions of these novel phenotypes in OA development are further discussed as well as interaction network between these subpopulations. The variation tendency of each population is testified in a destabilisation of the medial meniscus mouse model. The identification of cell types demonstrates a novel taxonomy and mechanism for ECs and OBs inside subchondral bone area provides new insights into the physiological and pathological behaviours of subchondral bone in OA pathogenesis.
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Affiliation(s)
- Yan Hu
- Institute of Translational Medicine, Shanghai University, Shanghai, China
| | - Jin Cui
- Department of Orthopedics, Changhai Hospital, Shanghai, China
| | - Han Liu
- Institute of Translational Medicine, Shanghai University, Shanghai, China
| | - Sicheng Wang
- Institute of Translational Medicine, Shanghai University, Shanghai, China
- Department of Orthopedics, Shanghai Zhongye Hospital, Shanghai, China
| | - Qirong Zhou
- Department of Orthopedics, Changhai Hospital, Shanghai, China
| | - Hao Zhang
- Department of Orthopedics, Changhai Hospital, Shanghai, China
| | - Jiawei Guo
- Department of Orthopedics, Changhai Hospital, Shanghai, China
| | - Liehu Cao
- Department of Orthopedics, Shanghai Baoshan Luodian Hospital, Shanghai, China
| | - Xiao Chen
- Department of Orthopedics, Changhai Hospital, Shanghai, China
| | - Ke Xu
- Institute of Translational Medicine, Shanghai University, Shanghai, China
| | - Jiacan Su
- Institute of Translational Medicine, Shanghai University, Shanghai, China
- Department of Orthopedics, Changhai Hospital, Shanghai, China
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13
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Tschaikowsky M, Brander S, Barth V, Thomann R, Rolauffs B, Balzer BN, Hugel T. The articular cartilage surface is impaired by a loss of thick collagen fibers and formation of type I collagen in early osteoarthritis. Acta Biomater 2022; 146:274-283. [PMID: 35487427 DOI: 10.1016/j.actbio.2022.04.036] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Revised: 04/03/2022] [Accepted: 04/21/2022] [Indexed: 12/14/2022]
Abstract
Osteoarthritis (OA) is a joint disease affecting millions of patients worldwide. During OA onset and progression, the articular cartilage is destroyed, but the underlying complex mechanisms remain unclear. Here, we uncover changes in the thickness of collagen fibers and their composition at the onset of OA. For articular cartilage explants from knee joints of OA patients, we find that type I collagen-rich fibrocartilage-like tissue was formed in macroscopically intact cartilage, distant from OA lesions. Importantly, the number of thick fibers (>100 nm) has decreased early in the disease, followed by complete absence of thick fibers in advanced OA. We have obtained these results by a combination of high-resolution atomic force microscopy imaging under near-native conditions, immunofluorescence, scanning electron microscopy and a fluorescence-based classification of the superficial chondrocyte spatial organization. Taken together, our data suggests that the loss of tissue functionality in early OA cartilage is caused by a reduction of thick type II collagen fibers, likely due to the formation of type I collagen-rich fibrocartilage, followed by the development of focal defects in later OA stages. We anticipate that such an integrative characterization will be very beneficial for an in-depth understanding of other native biological tissues and the development of sustainable biomaterials. STATEMENT OF SIGNIFICANCE: In early osteoarthritis (OA) the cartilage appears macroscopically intact. However, this study demonstrates that the collagen network already changes in early OA by collagen fiber thinning and the formation of fibrocartilage-like tissue. Both nanoscopic deficiencies already occur in macroscopically intact regions of the human knee joint and are likely connected to processes that result in a weakened extracellular matrix. This study enhances the understanding of earliest progressive cartilage degeneration in the absence of external damage. The results suggest a determination of the mean collagen fiber thickness as a new target for the detection of early OA and a regulation of type I collagen synthesis as a new path for OA treatment.
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14
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Piñeiro-Ramil M, Flórez-Fernández N, Ramil-Gómez O, Torres MD, Dominguez H, Blanco FJ, Meijide-Faílde R, Vaamonde-García C. Antifibrotic effect of brown algae-derived fucoidans on osteoarthritic fibroblast-like synoviocytes. Carbohydr Polym 2022; 282:119134. [PMID: 35123730 DOI: 10.1016/j.carbpol.2022.119134] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Revised: 12/23/2021] [Accepted: 01/09/2022] [Indexed: 12/12/2022]
Abstract
Synovial fibrosis is a pathological process which contributes to joint pain and stiffness in several musculoskeletal disorders. Fucoidans, sulfated polysaccharides found in brown algae, have recently emerged as promising therapeutic agents. Despite the increasing amount of evidence suggesting the protective role of fucoidans in different experimental approaches of human fibrotic disorders, the effect of these sulfated polysaccharides on synovial fibrosis has not been investigated yet. By an in vitro experimental approach in fibroblast-like synoviocytes, we detected that fucoidans inhibit their differentiation into myofibroblasts with tumor cell-like characteristics and restore apoptosis. Composition and structure of fucoidan appear to be critical for the detected activity. Furthermore, protective effects of these sulfated polysaccharides are mediated by upregulation of nitric oxide production and modulation of TGF-β/smad pathway. Altogether, our results support the use of fucoidans as therapeutic compounds in the treatment of the fibrotic processes involved in rheumatic pathologies.
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Affiliation(s)
- María Piñeiro-Ramil
- Universidade da Coruña, Tissue Engineering and Cellular Therapy Group, Instituto de Investigación Biomédica de A Coruña (INIBIC), Centro de Investigaciones Científicas Avanzadas (CICA), 15006 A Coruña, Spain.
| | - Noelia Flórez-Fernández
- CINBIO, Universidade de Vigo, Biomass and Sustanaible Development Group (EQ2), Departament of Chemical Engineering, 32004 Ourense, Spain.
| | - Olalla Ramil-Gómez
- Aging and Inflammation Research Laboratory, Instituto de Investigaciones Biomédicas de A Coruña (INIBIC), 15006 A Coruña, Spain; Universidade de Coruña, Endocrine, Nutritional and Metabolic Diseases Group, Departamento de Fisioterapia, Medicina y Ciencias Biomédicas, Facultad de Ciencias de la Salud, 15006 A Coruña, Spain.
| | - María Dolores Torres
- CINBIO, Universidade de Vigo, Biomass and Sustanaible Development Group (EQ2), Departament of Chemical Engineering, 32004 Ourense, Spain.
| | - Herminia Dominguez
- CINBIO, Universidade de Vigo, Biomass and Sustanaible Development Group (EQ2), Departament of Chemical Engineering, 32004 Ourense, Spain.
| | - Francisco J Blanco
- Universidade da Coruña, Grupo de Investigacion en Reumatología y Salud, Centro de Investigaciones Científicas Avanzadas (CICA), Departamento de Fisioterapia, Medicina y Ciencias Biomédicas, Facultad de Fisioterapia, 15006 A Coruña, Spain; Hospital Universitario A Coruña, Instituto de Investigación Biomédica de A Coruña (INIBIC), Grupo de Investigacion en Reumatología, 15006 A Coruña, Spain.
| | - Rosa Meijide-Faílde
- Universidade da Coruña, Tissue Engineering and Cellular Therapy Group, Instituto de Investigación Biomédica de A Coruña (INIBIC), Centro de Investigaciones Científicas Avanzadas (CICA), 15006 A Coruña, Spain; Universidade da Coruña, Departamento de Fisioterapia, Medicina y Ciencias Biomédicas, Facultad de Ciencias de la Salud, 15006 A Coruña, Spain.
| | - Carlos Vaamonde-García
- Universidade da Coruña, Grupo de Investigacion en Reumatología y Salud, Centro de Investigaciones Científicas Avanzadas (CICA), Departamento de Biología, Facultad de Ciencias, 15071 A Coruña, Spain.
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15
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Farah H, Wijesinghe SN, Nicholson T, Alnajjar F, Certo M, Alghamdi A, Davis ET, Young SP, Mauro C, Jones SW. Differential Metabotypes in Synovial Fibroblasts and Synovial Fluid in Hip Osteoarthritis Patients Support Inflammatory Responses. Int J Mol Sci 2022; 23:ijms23063266. [PMID: 35328687 PMCID: PMC8950319 DOI: 10.3390/ijms23063266] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Revised: 03/14/2022] [Accepted: 03/16/2022] [Indexed: 02/02/2023] Open
Abstract
Changes in cellular metabolism have been implicated in mediating the activated fibroblast phenotype in a number of chronic inflammatory disorders, including pulmonary fibrosis, renal disease and rheumatoid arthritis. The aim of this study was therefore to characterise the metabolic profile of synovial joint fluid and synovial fibroblasts under both basal and inflammatory conditions in a cohort of obese and normal-weight hip OA patients. Furthermore, we sought to ascertain whether modulation of a metabolic pathway in OA synovial fibroblasts could alter their inflammatory activity. Synovium and synovial fluid was obtained from hip OA patients, who were either of normal-weight or obese and were undergoing elective joint replacement surgery. The synovial fluid metabolome was determined by 1H NMR spectroscopy. The metabolic profile of isolated synovial fibroblasts in vitro was characterised by lactate secretion, oxygen consumption rate (OCR) and extracellular acidification rate (ECAR) using the Seahorse XF Analyser. The effects of a small molecule pharmacological inhibitor and siRNA targeted at glutaminase-1 (GLS1) were assessed to probe the role of glutamine metabolism in OA synovial fibroblast function. Obese OA patient synovial fluid (n = 5) exhibited a different metabotype, compared to normal-weight patient fluid (n = 6), with significantly increased levels of 1, 3-dimethylurate, N-Nitrosodimethylamine, succinate, tyrosine, pyruvate, glucose, glycine and lactate, and enrichment of the glutamine-glutamate metabolic pathway, which correlated with increasing adiposity. In vitro, isolated obese OA fibroblasts exhibited greater basal lactate secretion and aerobic glycolysis, and increased mitochondrial respiration when stimulated with pro-inflammatory cytokine TNFα, compared to fibroblasts from normal-weight patients. Inhibition of GLS1 attenuated the TNFα-induced expression and secretion of IL-6 in OA synovial fibroblasts. These findings suggest that altered cellular metabolism underpins the inflammatory phenotype of OA fibroblasts, and that targeted inhibition of glutamine-glutamate metabolism may provide a route to reducing the pathological effects of joint inflammation in OA patients who are obese.
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Affiliation(s)
- Hussein Farah
- Institute of Inflammation and Ageing, MRC Versus Arthritis Centre for Musculoskeletal Ageing Research, College of Medical and Dental Sciences, University of Birmingham, Birmingham B15 2TT, UK; (H.F.); (S.N.W.); (T.N.); (F.A.); (M.C.); (A.A.); (S.P.Y.); (C.M.)
| | - Susanne N. Wijesinghe
- Institute of Inflammation and Ageing, MRC Versus Arthritis Centre for Musculoskeletal Ageing Research, College of Medical and Dental Sciences, University of Birmingham, Birmingham B15 2TT, UK; (H.F.); (S.N.W.); (T.N.); (F.A.); (M.C.); (A.A.); (S.P.Y.); (C.M.)
| | - Thomas Nicholson
- Institute of Inflammation and Ageing, MRC Versus Arthritis Centre for Musculoskeletal Ageing Research, College of Medical and Dental Sciences, University of Birmingham, Birmingham B15 2TT, UK; (H.F.); (S.N.W.); (T.N.); (F.A.); (M.C.); (A.A.); (S.P.Y.); (C.M.)
| | - Fawzeyah Alnajjar
- Institute of Inflammation and Ageing, MRC Versus Arthritis Centre for Musculoskeletal Ageing Research, College of Medical and Dental Sciences, University of Birmingham, Birmingham B15 2TT, UK; (H.F.); (S.N.W.); (T.N.); (F.A.); (M.C.); (A.A.); (S.P.Y.); (C.M.)
| | - Michelangelo Certo
- Institute of Inflammation and Ageing, MRC Versus Arthritis Centre for Musculoskeletal Ageing Research, College of Medical and Dental Sciences, University of Birmingham, Birmingham B15 2TT, UK; (H.F.); (S.N.W.); (T.N.); (F.A.); (M.C.); (A.A.); (S.P.Y.); (C.M.)
| | - Abdullah Alghamdi
- Institute of Inflammation and Ageing, MRC Versus Arthritis Centre for Musculoskeletal Ageing Research, College of Medical and Dental Sciences, University of Birmingham, Birmingham B15 2TT, UK; (H.F.); (S.N.W.); (T.N.); (F.A.); (M.C.); (A.A.); (S.P.Y.); (C.M.)
| | - Edward T. Davis
- The Royal Orthopaedic Hospital, NHS Foundation Trust, Bristol Road South, Northfield, Birmingham B31 2AP, UK;
| | - Stephen P. Young
- Institute of Inflammation and Ageing, MRC Versus Arthritis Centre for Musculoskeletal Ageing Research, College of Medical and Dental Sciences, University of Birmingham, Birmingham B15 2TT, UK; (H.F.); (S.N.W.); (T.N.); (F.A.); (M.C.); (A.A.); (S.P.Y.); (C.M.)
| | - Claudio Mauro
- Institute of Inflammation and Ageing, MRC Versus Arthritis Centre for Musculoskeletal Ageing Research, College of Medical and Dental Sciences, University of Birmingham, Birmingham B15 2TT, UK; (H.F.); (S.N.W.); (T.N.); (F.A.); (M.C.); (A.A.); (S.P.Y.); (C.M.)
| | - Simon W. Jones
- Institute of Inflammation and Ageing, MRC Versus Arthritis Centre for Musculoskeletal Ageing Research, College of Medical and Dental Sciences, University of Birmingham, Birmingham B15 2TT, UK; (H.F.); (S.N.W.); (T.N.); (F.A.); (M.C.); (A.A.); (S.P.Y.); (C.M.)
- Correspondence:
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Bolia IK, Mertz K, Faye E, Sheppard J, Telang S, Bogdanov J, Hasan LK, Haratian A, Evseenko D, Weber AE, Petrigliano FA. Cross-Communication Between Knee Osteoarthritis and Fibrosis: Molecular Pathways and Key Molecules. Open Access J Sports Med 2022; 13:1-15. [PMID: 35261547 PMCID: PMC8898188 DOI: 10.2147/oajsm.s321139] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Accepted: 02/18/2022] [Indexed: 01/26/2023] Open
Abstract
Knee fibrosis is characterized by the presence of excessive connective tissue due to dysregulated fibroblast activation following local or systemic tissue damage. Knee fibrosis constitutes a major clinical problem in orthopaedics due to the severe limitation in the knee range of motion that leads to compromised function and patient disability. Knee osteoarthritis is an extremely common orthopedic condition that is associated with patient disability and major costs to the health-care systems worldwide. Although knee fibrosis and osteoarthritis (OA) have traditionally been perceived as two separate pathologic entities, recent research has shown common ground between the pathophysiologic processes that lead to the development of these two conditions. The purpose of this review was to identify the pathophysiologic pathways as well as key molecules that are implicated in the development of both knee OA and knee fibrosis in order to understand the relationship between the two diagnoses and potentially identify novel therapeutic targets.
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Affiliation(s)
- Ioanna K Bolia
- USC Epstein Family Center for Sports Medicine at Keck Medicine of USC, Los Angeles, CA, USA,Correspondence: Ioanna K Bolia, 1520 San Pablo Street Suite 2000, Los Angeles, CA, 90033, USA, Tel +1 9703432813, Fax +1 818-658-5925, Email
| | - Kevin Mertz
- USC Epstein Family Center for Sports Medicine at Keck Medicine of USC, Los Angeles, CA, USA
| | - Ethan Faye
- USC Epstein Family Center for Sports Medicine at Keck Medicine of USC, Los Angeles, CA, USA
| | - Justin Sheppard
- USC Epstein Family Center for Sports Medicine at Keck Medicine of USC, Los Angeles, CA, USA
| | - Sagar Telang
- USC Epstein Family Center for Sports Medicine at Keck Medicine of USC, Los Angeles, CA, USA
| | - Jacob Bogdanov
- USC Epstein Family Center for Sports Medicine at Keck Medicine of USC, Los Angeles, CA, USA
| | - Laith K Hasan
- USC Epstein Family Center for Sports Medicine at Keck Medicine of USC, Los Angeles, CA, USA
| | - Aryan Haratian
- USC Epstein Family Center for Sports Medicine at Keck Medicine of USC, Los Angeles, CA, USA
| | - Denis Evseenko
- USC Epstein Family Center for Sports Medicine at Keck Medicine of USC, Los Angeles, CA, USA
| | - Alexander E Weber
- USC Epstein Family Center for Sports Medicine at Keck Medicine of USC, Los Angeles, CA, USA
| | - Frank A Petrigliano
- USC Epstein Family Center for Sports Medicine at Keck Medicine of USC, Los Angeles, CA, USA
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17
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Abstract
Bone fragility fractures remain an important worldwide health and economic problem due to increased morbidity and mortality. The current methods for predicting fractures are largely based on the measurement of bone mineral density and the utilization of mathematical risk calculators based on clinical risk factors for bone fragility. Despite these approaches, many bone fractures remain undiagnosed. Therefore, current research is focused on the identification of new factors such as bone turnover markers (BTM) for risk calculation. BTM are a group of proteins and peptides released during bone remodeling that can be found in serum or urine. They derive from bone resorptive and formative processes mediated by osteoclasts and osteoblasts, respectively. Potential use of BTM in monitoring these phenomenon and therefore bone fracture risk is limited by physiologic and pathophysiologic factors that influence BTM. These limitations in predicting fractures explain why their inclusion in clinical guidelines remains limited despite the large number of studies examining BTM.
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Affiliation(s)
- Lisa Di Medio
- Department of Surgery and Translational Medicine, University Hospital of Florence, Florence, Italy.
| | - Maria Luisa Brandi
- Department of Surgery and Translational Medicine, University Hospital of Florence, Florence, Italy
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18
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Pehrsson M, Mortensen JH, Manon-Jensen T, Bay-Jensen AC, Karsdal MA, Davies MJ. Enzymatic cross-linking of collagens in organ fibrosis - resolution and assessment. Expert Rev Mol Diagn 2021; 21:1049-1064. [PMID: 34330194 DOI: 10.1080/14737159.2021.1962711] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Introduction: Enzymatic cross-linking of the collagens within the extracellular matrix (ECM) catalyzed by enzymes such as lysyl oxidase (LOX) and lysyl oxidase like-enzymes 1-4 (LOXL), transglutaminase 2 (TG2), and peroxidasin (PXDN) contribute to fibrosis progression through extensive collagen cross-linking. Studies in recent years have begun elucidating the important role of collagen cross-linking in perpetuating progression of organ fibrosis independently of inflammation through an increasingly stiff and noncompliant ECM. Therefore, collagen cross-linking and the cross-linking enzymes have become new targets in anti-fibrotic therapy as well as targets of novel biomarkers to properly assess resolution of the fibrotic ECM.Areas covered: The enzymatic actions of enzymes catalyzing collagen cross-linking and their relevance in organ fibrosis. Potential biomarkers specifically quantifying proteolytic fragments of collagen cross-linking is discussed based on Pubmed search done in November 2020 as well as the authors knowledge.Expert opinion: Current methods for the assessment of fibrosis involve the use of invasive and/or cumbersome and expensive methods such as tissue biopsies. Thus, an unmet need exists for the development and validation of minimally invasive biomarkers of proteolytic fragments of cross-linked collagens. These biomarkers may aid in the development and proper assessment of fibrosis resolution in coming years.
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Affiliation(s)
- Martin Pehrsson
- Department of Biomedical Science, University of Copenhagen, Copenhagen, Denmark.,Biomarkers & Research, Nordic Bioscience A/S, Herlev, Denmark
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19
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Nazet U, Neubert P, Schatz V, Grässel S, Proff P, Jantsch J, Schröder A, Kirschneck C. Differential gene expression response of synovial fibroblasts from temporomandibular joints and knee joints to dynamic tensile stress. J Orofac Orthop 2021; 83:361-375. [PMID: 34142176 PMCID: PMC9596579 DOI: 10.1007/s00056-021-00309-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Accepted: 04/18/2021] [Indexed: 12/17/2022]
Abstract
Purpose Apart from other risk factors, mechanical stress on joints can promote the development of osteoarthritis (OA), which can also affect the temporomandibular joint (TMJ), resulting in cartilage degeneration and synovitis. Synovial fibroblasts (SF) play an important role in upkeeping joint homeostasis and OA pathogenesis, but mechanical stress as a risk factor might act differently depending on the type of joint. We thus investigated the relative impact of mechanical stress on the gene expression pattern of SF from TMJs and knee joints to provide new insights into OA pathogenesis. Methods Primary SF isolated from TMJs and knee joints of mice were exposed to mechanical strain of varying magnitudes. Thereafter, the expression of marker genes of the extracellular matrix (ECM), inflammation and bone remodelling were analysed by quantitative real-time polymerase chain reaction (RT-qPCR). Results SF from the knee joints showed increased expression of genes associated with ECM remodelling, inflammation and bone remodelling after mechanical loading, whereas TMJ-derived SF showed reduced expression of genes associated with inflammation and bone remodelling. SF from the TMJ differed from knee-derived SF with regard to expression of ECM, inflammatory and osteoclastogenesis-promoting marker genes during mechanical strain. Conclusions Osteoarthritis-related ECM remodelling markers experience almost no changes in strain-induced gene expression, whereas inflammation and bone remodelling processes seem to differ depending on synovial fibroblast origin. Our data indicate that risk factors for the development and progression of osteoarthritis such as mechanical overuse have a different pathological impact in the TMJ compared to the knee joint. Supplementary Information The online version of this article (10.1007/s00056-021-00309-y) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Ute Nazet
- Department of Orthodontics, University Medical Centre of Regensburg, Regensburg, Germany.
| | - Patrick Neubert
- Institute of Clinical Microbiology and Hygiene, University Hospital of Regensburg, Regensburg, Germany
| | - Valentin Schatz
- Institute of Clinical Microbiology and Hygiene, University Hospital of Regensburg, Regensburg, Germany
| | - Susanne Grässel
- Department of Orthopaedic Surgery, Experimental Orthopaedics, Centre for Medical Biotechnology, University of Regensburg, Regensburg, Germany
| | - Peter Proff
- Department of Orthodontics, University Medical Centre of Regensburg, Regensburg, Germany
| | - Jonathan Jantsch
- Institute of Clinical Microbiology and Hygiene, University Hospital of Regensburg, Regensburg, Germany
| | - Agnes Schröder
- Department of Orthodontics, University Medical Centre of Regensburg, Regensburg, Germany
| | - Christian Kirschneck
- Department of Orthodontics, University Medical Centre of Regensburg, Regensburg, Germany
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20
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Zhang L, Xing R, Huang Z, Ding L, Zhang L, Li M, Li X, Wang P, Mao J. Synovial Fibrosis Involvement in Osteoarthritis. Front Med (Lausanne) 2021; 8:684389. [PMID: 34124114 PMCID: PMC8187615 DOI: 10.3389/fmed.2021.684389] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Accepted: 05/03/2021] [Indexed: 12/14/2022] Open
Abstract
Bone changes have always been the focus of research on osteoarthritis, but the number of studies on synovitis has increased only over the last 10 years. Our current understanding is that the mechanism of osteoarthritis involves all the tissues that make up the joints, including nerve sprouting, pannus formation, and extracellular matrix environmental changes in the synovium. These factors together determine synovial fibrosis and may be closely associated with the clinical symptoms of pain, hyperalgesia, and stiffness in osteoarthritis. In this review, we summarize the consensus of clinical work, the potential pathological mechanisms, the possible therapeutic targets, and the available therapeutic strategies for synovial fibrosis in osteoarthritis to gain insight and provide a foundation for further study.
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Affiliation(s)
- Li Zhang
- Departments of Orthopedics, The Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China
| | - Runlin Xing
- Departments of Orthopedics, The Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China.,Jiangsu Province Hospital of Chinese Medicine, Nanjing, China
| | - Zhengquan Huang
- Departments of Orthopedics, The Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China.,Jiangsu Province Hospital of Chinese Medicine, Nanjing, China
| | - Liang Ding
- Departments of Orthopedics, The Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China.,Jiangsu Province Hospital of Chinese Medicine, Nanjing, China
| | - Li Zhang
- Departments of Orthopedics, The Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China.,Jiangsu Province Hospital of Chinese Medicine, Nanjing, China
| | - Mingchao Li
- Departments of Orthopedics, The Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China
| | - Xiaochen Li
- Departments of Orthopedics, The Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China
| | - Peimin Wang
- Departments of Orthopedics, The Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China.,Jiangsu Province Hospital of Chinese Medicine, Nanjing, China
| | - Jun Mao
- Departments of Orthopedics, The Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China.,Jiangsu Province Hospital of Chinese Medicine, Nanjing, China
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21
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Rim YA, Ju JH. The Role of Fibrosis in Osteoarthritis Progression. Life (Basel) 2020; 11:life11010003. [PMID: 33374529 PMCID: PMC7822172 DOI: 10.3390/life11010003] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Revised: 12/18/2020] [Accepted: 12/20/2020] [Indexed: 12/13/2022] Open
Abstract
Osteoarthritis (OA) is a chronic degenerative joint disease where the main characteristics include cartilage degeneration and synovial membrane inflammation. These changes in the knee joint eventually dampen the function of the joint and restrict joint movement, which eventually leads to a stage where total joint replacement is the only treatment option. While much is still unknown about the pathogenesis and progression mechanism of OA, joint fibrosis can be a critical issue for better understanding this disease. Synovial fibrosis and the generation of fibrocartilage are the two main fibrosis-related characteristics that can be found in OA. However, these two processes remain mostly misunderstood. In this review, we focus on the fibrosis process in OA, especially in the cartilage and the synovium tissue, which are the main tissues involved in OA.
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Affiliation(s)
- Yeri Alice Rim
- Catholic iPSC Research Center, College of Medicine, The Catholic University of Korea, Seoul 06591, Korea;
| | - Ji Hyeon Ju
- Catholic iPSC Research Center, College of Medicine, The Catholic University of Korea, Seoul 06591, Korea;
- Division of Rheumatology, Department of Internal Medicine, Seoul St. Mary’s Hospital, Institute of Medical Science, College of Medicine, The Catholic University of Korea, Seoul 06591, Korea
- Correspondence: ; Tel.: +82-2-2258-6895
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22
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Wang M, Lessard SG, Singh P, Pannellini T, Chen T, Rourke BJ, Chowdhury L, Craveiro V, Sculco PK, Meulen MCH, Otero M. Knee fibrosis is associated with the development of osteoarthritis in a murine model of tibial compression. J Orthop Res 2020. [DOI: 10.1002/jor.24815] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
Affiliation(s)
- Mengying Wang
- HSS Research Institute Hospital for Special Surgery New York New York
- School of Public Health, Xi'an Jiaotong University Health Science Center Xi'an China
| | | | - Purva Singh
- HSS Research Institute Hospital for Special Surgery New York New York
| | - Tania Pannellini
- HSS Research Institute Hospital for Special Surgery New York New York
| | - Tony Chen
- HSS Research Institute Hospital for Special Surgery New York New York
| | - Brennan J. Rourke
- HSS Research Institute Hospital for Special Surgery New York New York
| | - Luvana Chowdhury
- HSS Research Institute Hospital for Special Surgery New York New York
| | - Vinicius Craveiro
- HSS Research Institute Hospital for Special Surgery New York New York
| | - Peter K. Sculco
- The Stavros Niarchos Foundation Complex Joint Reconstruction Center Hospital for Special Surgery New York New York
| | - Marjolein C. H. Meulen
- HSS Research Institute Hospital for Special Surgery New York New York
- Sibley School of Mechanical and Aerospace Engineering Cornell University Ithaca New York
- Meinig School of Biomedical Engineering Cornell University Ithaca New York
| | - Miguel Otero
- HSS Research Institute Hospital for Special Surgery New York New York
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23
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Li C, Luo J, Xu X, Zhou Z, Ying S, Liao X, Wu K. Single cell sequencing revealed the underlying pathogenesis of the development of osteoarthritis. Gene 2020; 757:144939. [PMID: 32640306 DOI: 10.1016/j.gene.2020.144939] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2020] [Revised: 05/25/2020] [Accepted: 07/01/2020] [Indexed: 12/31/2022]
Abstract
Osteoarthritis (OA) is a chronic degenerative change with high incidence and leads to a lower quality of life and a larger socioeconomic burden. This study aimed to explore potential crucial genes and pathways associated with OA that can be used as potential biomarkers forearly treatment. Single-cell gene expression profile of 1464 chondrocytes and 192 fibroblasts in OA were downloaded from the public database (GSE104782 and GSE109449) for subsequent analysis. A total of eight clusters in chondrocytes and three clusters in fibroblasts of OA were identified using the Seurat pipeline and the "SingleR" package for cell-type annotation. Moreover, 44 common marker-genes between fibroblastic-like chondrocytes and fibroblasts were identified and the focal adhesions pathway was further identified as a significant potential mechanism of OA via functional enrichment analysis. Further, the reverse transcription quantitative real-time PCR (RT-qPCR) experiments at tissue's and cellular level confirmed that two key marker-genes (COL6A3 and ACTG1) might participate in the progression of OA. Summarily, we inferred that chondrocytes in OA might up-regulate the expression of COL6A3 and ACTG1 to complete fibroblasts transformation through the focal adhesion pathway. These findings are expected to gain a further insight into the development of OA fibrosis process and provide a promising target for treatment for early OA.
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Affiliation(s)
- Chenlu Li
- Rheumatology Department, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Jing Luo
- Rheumatology Department, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Xin Xu
- Institute of Genomic Medicine, Wenzhou Medical University, Wenzhou, China
| | - Zihao Zhou
- Institute of Genomic Medicine, Wenzhou Medical University, Wenzhou, China
| | - Senhong Ying
- Institute of Genomic Medicine, Wenzhou Medical University, Wenzhou, China
| | - Xin Liao
- Institute of Genomic Medicine, Wenzhou Medical University, Wenzhou, China
| | - Keke Wu
- Wenzhou Center for Disease Control and Prevention, Wenzhou, China.
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24
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Gjaltema RAF, Goubert D, Huisman C, del Pilar García Tobilla C, Koncz M, Jellema PG, Wu D, Brouwer U, Kiss A, Verschure PJ, Bank RA, Rots MG. KRAB-Induced Heterochromatin Effectively Silences PLOD2 Gene Expression in Somatic Cells and is Resilient to TGFβ1 Activation. Int J Mol Sci 2020; 21:ijms21103634. [PMID: 32455614 PMCID: PMC7279273 DOI: 10.3390/ijms21103634] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Revised: 05/03/2020] [Accepted: 05/07/2020] [Indexed: 12/22/2022] Open
Abstract
Epigenetic editing, an emerging technique used for the modulation of gene expression in mammalian cells, is a promising strategy to correct disease-related gene expression. Although epigenetic reprogramming results in sustained transcriptional modulation in several in vivo models, further studies are needed to develop this approach into a straightforward technology for effective and specific interventions. Important goals of current research efforts are understanding the context-dependency of successful epigenetic editing and finding the most effective epigenetic effector(s) for specific tasks. Here we tested whether the fibrosis- and cancer-associated PLOD2 gene can be repressed by the DNA methyltransferase M.SssI, or by the non-catalytic Krüppel associated box (KRAB) repressor directed to the PLOD2 promoter via zinc finger- or CRISPR-dCas9-mediated targeting. M.SssI fusions induced de novo DNA methylation, changed histone modifications in a context-dependent manner, and led to 50%–70% reduction in PLOD2 expression in fibrotic fibroblasts and in MDA-MB-231 cancer cells. Targeting KRAB to PLOD2 resulted in the deposition of repressive histone modifications without DNA methylation and in almost complete PLOD2 silencing. Interestingly, both long-term TGFβ1-induced, as well as unstimulated PLOD2 expression, was completely repressed by KRAB, while M.SssI only prevented the TGFβ1-induced PLOD2 expression. Targeting transiently expressed dCas9-KRAB resulted in sustained PLOD2 repression in HEK293T and MCF-7 cells. Together, these findings point to KRAB outperforming DNA methylation as a small potent targeting epigenetic effector for silencing TGFβ1-induced and uninduced PLOD2 expression.
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Affiliation(s)
- Rutger A. F. Gjaltema
- Epigenetic Editing Laboratory, Department of Pathology and Medical Biology, University of Groningen, University Medical Center Groningen, Hanzeplein 1 EA11, 9713 GZ Groningen, The Netherlands; (R.A.F.G.); (D.G.); (C.H.); (C.d.P.G.T.); (P.G.J.); (D.W.); (U.B.)
- MATRIX Research Group, Department of Pathology and Medical Biology, University of Groningen, University Medical Center Groningen, 9713 GZ Groningen, The Netherlands;
| | - Désirée Goubert
- Epigenetic Editing Laboratory, Department of Pathology and Medical Biology, University of Groningen, University Medical Center Groningen, Hanzeplein 1 EA11, 9713 GZ Groningen, The Netherlands; (R.A.F.G.); (D.G.); (C.H.); (C.d.P.G.T.); (P.G.J.); (D.W.); (U.B.)
| | - Christian Huisman
- Epigenetic Editing Laboratory, Department of Pathology and Medical Biology, University of Groningen, University Medical Center Groningen, Hanzeplein 1 EA11, 9713 GZ Groningen, The Netherlands; (R.A.F.G.); (D.G.); (C.H.); (C.d.P.G.T.); (P.G.J.); (D.W.); (U.B.)
| | - Consuelo del Pilar García Tobilla
- Epigenetic Editing Laboratory, Department of Pathology and Medical Biology, University of Groningen, University Medical Center Groningen, Hanzeplein 1 EA11, 9713 GZ Groningen, The Netherlands; (R.A.F.G.); (D.G.); (C.H.); (C.d.P.G.T.); (P.G.J.); (D.W.); (U.B.)
| | - Mihály Koncz
- Institute of Biochemistry, Biological Research Centre, H-6726 Szeged, Hungary; (M.K.); (A.K.)
- Doctoral School of Biology, Faculty of Science and Informatics, University of Szeged, H-6726 Szeged, Hungary
| | - Pytrick G. Jellema
- Epigenetic Editing Laboratory, Department of Pathology and Medical Biology, University of Groningen, University Medical Center Groningen, Hanzeplein 1 EA11, 9713 GZ Groningen, The Netherlands; (R.A.F.G.); (D.G.); (C.H.); (C.d.P.G.T.); (P.G.J.); (D.W.); (U.B.)
- MATRIX Research Group, Department of Pathology and Medical Biology, University of Groningen, University Medical Center Groningen, 9713 GZ Groningen, The Netherlands;
| | - Dandan Wu
- Epigenetic Editing Laboratory, Department of Pathology and Medical Biology, University of Groningen, University Medical Center Groningen, Hanzeplein 1 EA11, 9713 GZ Groningen, The Netherlands; (R.A.F.G.); (D.G.); (C.H.); (C.d.P.G.T.); (P.G.J.); (D.W.); (U.B.)
| | - Uilke Brouwer
- Epigenetic Editing Laboratory, Department of Pathology and Medical Biology, University of Groningen, University Medical Center Groningen, Hanzeplein 1 EA11, 9713 GZ Groningen, The Netherlands; (R.A.F.G.); (D.G.); (C.H.); (C.d.P.G.T.); (P.G.J.); (D.W.); (U.B.)
- MATRIX Research Group, Department of Pathology and Medical Biology, University of Groningen, University Medical Center Groningen, 9713 GZ Groningen, The Netherlands;
| | - Antal Kiss
- Institute of Biochemistry, Biological Research Centre, H-6726 Szeged, Hungary; (M.K.); (A.K.)
| | - Pernette J. Verschure
- Swammerdam Institute for Life Sciences, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands;
| | - Ruud A. Bank
- MATRIX Research Group, Department of Pathology and Medical Biology, University of Groningen, University Medical Center Groningen, 9713 GZ Groningen, The Netherlands;
| | - Marianne G. Rots
- Epigenetic Editing Laboratory, Department of Pathology and Medical Biology, University of Groningen, University Medical Center Groningen, Hanzeplein 1 EA11, 9713 GZ Groningen, The Netherlands; (R.A.F.G.); (D.G.); (C.H.); (C.d.P.G.T.); (P.G.J.); (D.W.); (U.B.)
- Correspondence: ; Tel.: +31-50-3610153
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25
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Qadri M, Jay GD, Zhang LX, Richendrfer H, Schmidt TA, Elsaid KA. Proteoglycan-4 regulates fibroblast to myofibroblast transition and expression of fibrotic genes in the synovium. Arthritis Res Ther 2020; 22:113. [PMID: 32404156 PMCID: PMC7222325 DOI: 10.1186/s13075-020-02207-x] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Accepted: 04/30/2020] [Indexed: 12/19/2022] Open
Abstract
Background Synovial tissue fibrosis is common in advanced OA with features including the presence of stress fiber-positive myofibroblasts and deposition of cross-linked collagen type-I. Proteoglycan-4 (PRG4) is a mucinous glycoprotein secreted by synovial fibroblasts and is a major component of synovial fluid. PRG4 is a ligand of the CD44 receptor. Our objective was to examine the role of PRG4-CD44 interaction in regulating synovial tissue fibrosis in vitro and in vivo. Methods OA synoviocytes were treated with TGF-β ± PRG4 for 24 h and α-SMA content was determined using immunofluorescence. Rhodamine-labeled rhPRG4 was incubated with OA synoviocytes ± anti-CD44 or isotype control antibodies and cellular uptake of rhPRG4 was determined following a 30-min incubation and α-SMA expression following a 24-h incubation. HEK-TGF-β cells were treated with TGF-β ± rhPRG4 and Smad3 phosphorylation was determined using immunofluorescence and TGF-β/Smad pathway activation was determined colorimetrically. We probed for stress fibers and focal adhesions (FAs) in TGF-β-treated murine fibroblasts and fibroblast migration was quantified ± rhPRG4. Synovial expression of fibrotic markers: α-SMA, collagen type-I, and PLOD2 in Prg4 gene-trap (Prg4GT) and recombined Prg4GTR animals were studied at 2 and 9 months of age. Synovial expression of α-SMA and PLOD2 was determined in 2-month-old Prg4GT/GT&Cd44−/− and Prg4GTR/GTR&Cd44−/− animals. Results PRG4 reduced α-SMA content in OA synoviocytes (p < 0.001). rhPRG4 was internalized by OA synoviocytes via CD44 and CD44 neutralization attenuated rhPRG4’s antifibrotic effect (p < 0.05). rhPRG4 reduced pSmad3 signal in HEK-TGF-β cells (p < 0.001) and TGF-β/Smad pathway activation (p < 0.001). rhPRG4 reduced the number of stress fiber-positive myofibroblasts, FAs mean size, and cell migration in TGF-β-treated NIH3T3 fibroblasts (p < 0.05). rhPRG4 inhibited fibroblast migration in a macrophage and fibroblast co-culture model without altering active or total TGF-β levels. Synovial tissues of 9-month-old Prg4GT/GT animals had higher α-SMA, collagen type-I, and PLOD2 (p < 0.001) content and Prg4 re-expression reduced these markers (p < 0.01). Prg4 re-expression also reduced α-SMA and PLOD2 staining in CD44-deficient mice. Conclusion PRG4 is an endogenous antifibrotic modulator in the joint and its effect on myofibroblast formation is partially mediated by CD44, but CD44 is not required to demonstrate an antifibrotic effect in vivo.
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Affiliation(s)
- Marwa Qadri
- Department of Biomedical and Pharmaceutical Sciences, Chapman University School of Pharmacy, Rinker Health Sciences Campus, 9401 Jeronimo Road, Irvine, CA, 92618, USA.,Department of Pharmacology, College of Pharmacy, Jazan University, Jazan, 82826, Saudi Arabia
| | - Gregory D Jay
- Department of Emergency Medicine, Rhode Island Hospital, Providence, RI, USA
| | - Ling X Zhang
- Department of Emergency Medicine, Rhode Island Hospital, Providence, RI, USA
| | - Holly Richendrfer
- Department of Emergency Medicine, Rhode Island Hospital, Providence, RI, USA
| | - Tannin A Schmidt
- Biomedical Engineering Department, School of Dental Medicine, University of Connecticut, Farmington, CT, USA
| | - Khaled A Elsaid
- Department of Biomedical and Pharmaceutical Sciences, Chapman University School of Pharmacy, Rinker Health Sciences Campus, 9401 Jeronimo Road, Irvine, CA, 92618, USA.
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26
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Chen Y, Wu B, Lin J, Yu D, Du X, Sheng Z, Yu Y, An C, Zhang X, Li Q, Zhu S, Sun H, Zhang X, Zhang S, Zhou J, Bunpetch V, El-Hashash A, Ji J, Ouyang H. High-Resolution Dissection of Chemical Reprogramming from Mouse Embryonic Fibroblasts into Fibrocartilaginous Cells. Stem Cell Reports 2020; 14:478-492. [PMID: 32084387 PMCID: PMC7066361 DOI: 10.1016/j.stemcr.2020.01.013] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2019] [Revised: 01/23/2020] [Accepted: 01/23/2020] [Indexed: 01/20/2023] Open
Abstract
Articular cartilage injury and degeneration causing pain and loss of quality-of-life has become a serious problem for increasingly aged populations. Given the poor self-renewal of adult human chondrocytes, alternative functional cell sources are needed. Direct reprogramming by small molecules potentially offers an oncogene-free and cost-effective approach to generate chondrocytes, but has yet to be investigated. Here, we directly reprogrammed mouse embryonic fibroblasts into PRG4+ chondrocytes using a 3D system with a chemical cocktail, VCRTc (valproic acid, CHIR98014, Repsox, TTNPB, and celecoxib). Using single-cell transcriptomics, we revealed the inhibition of fibroblast features and activation of chondrogenesis pathways in early reprograming, and the intermediate cellular process resembling cartilage development. The in vivo implantation of chemical-induced chondrocytes at defective articular surfaces promoted defect healing and rescued 63.4% of mechanical function loss. Our approach directly converts fibroblasts into functional cartilaginous cells, and also provides insights into potential pharmacological strategies for future cartilage regeneration. A chemical method to derive functional murine articular chondrocytes from fibroblasts Chemical-induced chondrocytes promote in vivo regeneration of articular defects In single-cell analysis, intermediate reprogramming events resemble cartilage development
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Affiliation(s)
- Yishan Chen
- Department of Orthopaedic Surgery, Second Affiliated Hospital and Zhejiang University-University of Edinburgh Institute and School of Basic Medicine, Zhejiang University School of Medicine, Hangzhou 310058, China; Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cells and Regenerative Medicine, Zhejiang University School of Medicine, Hangzhou 310058, China; Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou 310058, China
| | - Bingbing Wu
- Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cells and Regenerative Medicine, Zhejiang University School of Medicine, Hangzhou 310058, China; Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou 310058, China
| | - Junxin Lin
- Department of Orthopaedic Surgery, Second Affiliated Hospital and Zhejiang University-University of Edinburgh Institute and School of Basic Medicine, Zhejiang University School of Medicine, Hangzhou 310058, China; Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cells and Regenerative Medicine, Zhejiang University School of Medicine, Hangzhou 310058, China; Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou 310058, China
| | - Dongsheng Yu
- Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cells and Regenerative Medicine, Zhejiang University School of Medicine, Hangzhou 310058, China; Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou 310058, China
| | - Xiaotian Du
- Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cells and Regenerative Medicine, Zhejiang University School of Medicine, Hangzhou 310058, China; Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou 310058, China
| | - Zixuan Sheng
- Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cells and Regenerative Medicine, Zhejiang University School of Medicine, Hangzhou 310058, China; Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou 310058, China
| | - Yeke Yu
- Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cells and Regenerative Medicine, Zhejiang University School of Medicine, Hangzhou 310058, China; Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou 310058, China
| | - Chengrui An
- Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cells and Regenerative Medicine, Zhejiang University School of Medicine, Hangzhou 310058, China; Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou 310058, China
| | - Xiaoan Zhang
- Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cells and Regenerative Medicine, Zhejiang University School of Medicine, Hangzhou 310058, China; Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou 310058, China
| | - Qikai Li
- Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cells and Regenerative Medicine, Zhejiang University School of Medicine, Hangzhou 310058, China; Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou 310058, China
| | - Shouan Zhu
- Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cells and Regenerative Medicine, Zhejiang University School of Medicine, Hangzhou 310058, China; Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou 310058, China
| | - Heng Sun
- Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cells and Regenerative Medicine, Zhejiang University School of Medicine, Hangzhou 310058, China; Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou 310058, China
| | - Xianzhu Zhang
- Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cells and Regenerative Medicine, Zhejiang University School of Medicine, Hangzhou 310058, China; Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou 310058, China
| | - Shufang Zhang
- Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cells and Regenerative Medicine, Zhejiang University School of Medicine, Hangzhou 310058, China; Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou 310058, China; China Orthopedic Regenerative Medicine Group (CORMed), Hangzhou 310058, China
| | - Jing Zhou
- Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cells and Regenerative Medicine, Zhejiang University School of Medicine, Hangzhou 310058, China; Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou 310058, China
| | - Varitsara Bunpetch
- Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cells and Regenerative Medicine, Zhejiang University School of Medicine, Hangzhou 310058, China; Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou 310058, China
| | - Ahmed El-Hashash
- Department of Orthopaedic Surgery, Second Affiliated Hospital and Zhejiang University-University of Edinburgh Institute and School of Basic Medicine, Zhejiang University School of Medicine, Hangzhou 310058, China
| | - Junfeng Ji
- Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cells and Regenerative Medicine, Zhejiang University School of Medicine, Hangzhou 310058, China; Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou 310058, China
| | - Hongwei Ouyang
- Department of Orthopaedic Surgery, Second Affiliated Hospital and Zhejiang University-University of Edinburgh Institute and School of Basic Medicine, Zhejiang University School of Medicine, Hangzhou 310058, China; Dr. Li Dak Sum & Yip Yio Chin Center for Stem Cells and Regenerative Medicine, Zhejiang University School of Medicine, Hangzhou 310058, China; Key Laboratory of Tissue Engineering and Regenerative Medicine of Zhejiang Province, Zhejiang University School of Medicine, Hangzhou 310058, China; Department of Sports Medicine, Zhejiang University School of Medicine, Hangzhou 310058, China; China Orthopedic Regenerative Medicine Group (CORMed), Hangzhou 310058, China.
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Inhibition of Synovial Macrophage Pyroptosis Alleviates Synovitis and Fibrosis in Knee Osteoarthritis. Mediators Inflamm 2019; 2019:2165918. [PMID: 31582897 PMCID: PMC6754937 DOI: 10.1155/2019/2165918] [Citation(s) in RCA: 74] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2019] [Accepted: 08/11/2019] [Indexed: 12/23/2022] Open
Abstract
Increasing evidence has shown that macrophage pyroptosis in different tissues participates in chronic aseptic inflammation and is related to tissue fibrosis. Our last studies also revealed the vital role of synovial fibroblast pyroptosis in the onset and development of knee osteoarthritis (KOA). In this study, we aimed to investigate whether synovial macrophage pyroptosis did occur and whether this form of cell death should be related to synovitis and fibrosis of KOA. In the synovial tissue of KOA model rats, we observed a decrease of caspase1, NLRP3, ASC, and GSDMD caused by macrophage depletion in both the mRNA and protein expressions. Besides, rats treated with the specific caspase1 inhibitor Ac-YVAD-CMK showed less inflammatory reaction and fibrosis, not only in the expression of proinflammatory factors IL-1β, IL-18, and HMGB1 and fibrosis markers TGF-β, PLOD2, COL1A1, and TIMP1 but also in the observation of HE staining, Sirius Red staining, and the transverse diameters of the right knees. Subsequently, we established an LPS+ATP-induced model in macrophages mimicking the inflammatory environment of KOA and inducing macrophage pyroptosis. Macrophages transfected with caspase1 siRNA showed reduced cell death; meanwhile, the relative expression of pyroptosis-related proteins were also downregulated. In addition, the level of fibrotic markers in synovial fibroblasts were significantly decreased after coculture with siRNA GSDMD-transfected macrophages. To conclude, synovial macrophage pyroptosis may occur in the pathological processes of KOA and inhibition of synovial macrophage pyroptosis alleviates synovitis and fibrosis in KOA model rats.
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Collagen cross-linking mediated by lysyl hydroxylase 2: an enzymatic battlefield to combat fibrosis. Essays Biochem 2019; 63:377-387. [DOI: 10.1042/ebc20180051] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2019] [Revised: 06/26/2019] [Accepted: 07/02/2019] [Indexed: 12/12/2022]
Abstract
AbstractThe hallmark of fibrosis is an excessive accumulation of collagen, ultimately leading to organ failure. It has become evident that the deposited collagen also exhibits qualitative modifications. A marked modification is the increased cross-linking, leading to a stabilization of the collagen network and limiting fibrosis reversibility. Not only the level of cross-linking is increased, but also the composition of cross-linking is altered: an increase is seen in hydroxyallysine-derived cross-links at the expense of allysine cross-links. This results in irreversible fibrosis, as collagen cross-linked by hydroxyallysine is more difficult to degrade. Hydroxyallysine is derived from a hydroxylysine in the telopeptides of collagen. The expression of lysyl hydroxylase (LH) 2 (LH2), the enzyme responsible for the formation of telopeptidyl hydroxylysine, is universally up-regulated in fibrosis. It is expected that inhibition of this enzyme will lead to reversible fibrosis without interfering with the normal repair process. In this review, we discuss the molecular basis of collagen modifications and cross-linking, with an emphasis on LH2-mediated hydroxyallysine cross-links, and their implications for the pathogenesis and treatment of fibrosis.
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15-Deoxy-Δ-12, 14-prostaglandin J2 acts cooperatively with prednisolone to reduce TGF-β-induced pro-fibrotic pathways in human osteoarthritis fibroblasts. Biochem Pharmacol 2019; 165:66-78. [DOI: 10.1016/j.bcp.2019.03.039] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2019] [Accepted: 03/28/2019] [Indexed: 12/20/2022]
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Increased HIF-1 α in Knee Osteoarthritis Aggravate Synovial Fibrosis via Fibroblast-Like Synoviocyte Pyroptosis. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2019; 2019:6326517. [PMID: 30755787 PMCID: PMC6348923 DOI: 10.1155/2019/6326517] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/03/2018] [Accepted: 12/03/2018] [Indexed: 12/19/2022]
Abstract
Fibroblast-like synoviocytes (FLSs) are the main effector cells of knee osteoarthritis (KOA) synovial fibrosis. Our last report showed that NLRP1 and NLRP3 inflammasomes may mediate LPS/ATP-induced FLSs pyroptosis in KOA. In the present study, we found an elevated hypoxia-inducible factor-1α (HIF-1α) level in the synovial tissue of KOA model rats, and inhibiting the increase of HIF-1α could improve synovial fibrosis in rats. Subsequently, we established LPS/ATP-induced model in FLSs mimicking the inflammatory environment of KOA. FLSs transfected with siRNA HIF-1α showed a reduced cell death; meanwhile, the relative expression of pyroptosis-related proteins was also downregulated. Additionally, FLSs transfected with or without siRNA GSDMD were exposed to hypoxia. GSDMD silencing can significantly reduce both gene and protein levels of fibrogenic markers transforming growth factor-β (TGF-β), procollagen-lysine, 2-oxoglutarate 5-dioxygenase2 (PLOD2), collagen type I α1 chain (COL1A1), and tissue inhibitor of metalloproteinases 1 (TIMP1). Taken together, our findings indicate that increased HIF-1α is highly involved in the KOA synovial fibrosis. Moreover, elevated HIF-1α may aggravate synovial fibrosis via FLS pyroptosis.
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Brückner C, Straube E, Petersen I, Sachse S, Keller P, Layher F, Matziolis G, Spiegl U, Zajonz D, Edel M, Roth A. Low-grade infections as a possible cause of arthrofibrosis after total knee arthroplasty. Patient Saf Surg 2019; 13:1. [PMID: 30647774 PMCID: PMC6327456 DOI: 10.1186/s13037-018-0181-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2018] [Accepted: 12/11/2018] [Indexed: 12/20/2022] Open
Abstract
Purpose Arthrofibrosis after total knee arthroplasty represents a considerable burden for the patient and a therapeutic challenge for the practitioner. One possible cause discussed in the literature is a low-grade infection. This hypothesis should be examined within the scope of this retrospective study. Patients and methods Nineteen patients with clinical symptoms of arthrofibrosis after primary total knee arthroplasty were examined between January, 1999 and January, 2012. Incorrect positioning was radiologically ruled out. All patients were examined clinically (score of Freeman as well as Blauth and Jäger), radiologically (component and leg alignment, patella height according to Insall and Salvati), microbiologically (culture-based procedures), molecular biologically (PCR) and histologically in the course of an open revision of the prosthesis. Results According to the score of Freeman et al. (1977), a highly significant improvement in pain (p = 0.007) and in the overall score (p = 0.003) was shown. The knee joint mobility did not change significantly (p = 0.795). PCR was negative in 17 patients. One patient showed a PCR-positive result of the synovial membrane for Corynebacterium spp., while Staphylococcus warneri was detected in the culture. Another patient had a positive result of synovia PCR for Enterococcus cecorum as well as Corynebacterium spp. However, this culture was sterile. In 16 patient samples, no bacterial growth was detectable. Two samples were not evaluable. The main histopathological findings were synovialitis and fibrosis. Conclusion The hypothesis of low-grade-infection-induced arthrofibrosis after total knee arthroplasty could not be confirmed in this study. However, based on this small study population the conclusion needs to be confirmed by new and larger studies, ideally prospectively designed including a control group.
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Affiliation(s)
- C Brückner
- Orthopaedic Professorship of the University Hospital Jena, Orthopaedic Department of the Waldkliniken Eisenberg, Eisenberg, Germany
| | - E Straube
- 2Institute of Medical Microbiology, Friedrich-Schiller-University Jena, Jena, Germany
| | - I Petersen
- 3Institute of Pathology, Friedrich-Schiller-University Jena, Jena, Germany.,4Institute of Pathology, SRH Waldklinikum Gera, Gera, Germany
| | - S Sachse
- 2Institute of Medical Microbiology, Friedrich-Schiller-University Jena, Jena, Germany
| | - P Keller
- 2Institute of Medical Microbiology, Friedrich-Schiller-University Jena, Jena, Germany.,5Institute of Medical Microbiology, University of Zurich, Zurich, Switzerland
| | - F Layher
- Orthopaedic Professorship of the University Hospital Jena, Orthopaedic Department of the Waldkliniken Eisenberg, Eisenberg, Germany
| | - G Matziolis
- Orthopaedic Professorship of the University Hospital Jena, Orthopaedic Department of the Waldkliniken Eisenberg, Eisenberg, Germany
| | - U Spiegl
- 6Department of Orthopaedics, Traumatology and Plastic Surgery, University Hospital Leipzig, Leipzig, Germany
| | - D Zajonz
- 6Department of Orthopaedics, Traumatology and Plastic Surgery, University Hospital Leipzig, Leipzig, Germany
| | - M Edel
- ZESBO - Center for research on musculoskeletal systems, Leipzig, Germany
| | - A Roth
- Orthopaedic Professorship of the University Hospital Jena, Orthopaedic Department of the Waldkliniken Eisenberg, Eisenberg, Germany.,6Department of Orthopaedics, Traumatology and Plastic Surgery, University Hospital Leipzig, Leipzig, Germany.,8Klinik und Poliklinik für Orthopädie, Unfallchirurgie und Plastische Chirurgie, Bereich Endoprothetik/Orthopädie, Universitätsklinikum Leipzig AöR, Liebigstraße 20, 04103 Leipzig, Germany
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32
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Kolos JM, Voll AM, Bauder M, Hausch F. FKBP Ligands-Where We Are and Where to Go? Front Pharmacol 2018; 9:1425. [PMID: 30568592 PMCID: PMC6290070 DOI: 10.3389/fphar.2018.01425] [Citation(s) in RCA: 97] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2018] [Accepted: 11/19/2018] [Indexed: 12/24/2022] Open
Abstract
In recent years, many members of the FK506-binding protein (FKBP) family were increasingly linked to various diseases. The binding domain of FKBPs differs only in a few amino acid residues, but their biological roles are versatile. High-affinity ligands with selectivity between close homologs are scarce. This review will give an overview of the most prominent ligands developed for FKBPs and highlight a perspective for future developments. More precisely, human FKBPs and correlated diseases will be discussed as well as microbial FKBPs in the context of anti-bacterial and anti-fungal therapeutics. The last section gives insights into high-affinity ligands as chemical tools and dimerizers.
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Affiliation(s)
| | | | | | - Felix Hausch
- Department of Chemistry, Institute of Chemistry and Biochemistry, Darmstadt University of Technology, Darmstadt, Germany
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33
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Shao S, Zhang X, Duan L, Fang H, Rao S, Liu W, Guo B, Zhang X. Lysyl Hydroxylase Inhibition by Minoxidil Blocks Collagen Deposition and Prevents Pulmonary Fibrosis via TGF-β₁/Smad3 Signaling Pathway. Med Sci Monit 2018; 24:8592-8601. [PMID: 30481795 PMCID: PMC6278642 DOI: 10.12659/msm.910761] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Background Idiopathic pulmonary fibrosis (IPF) is a deadly disease characterized by excessive collagen in the extracellular matrix (ECM) of the lungs. Collagen is the primary protein component of the ECM. However, the exact mechanisms underlying the formation and deposition of collagen in the ECM under normal and pathological conditions remain unclear. Previous studies showed that lysyl hydroxylase (LH) plays a crucial role in the formation of collagen. Minoxidil is an FDA-approved anti-hypertensive agent that inhibits LH that reduces fibrosis. In this study, we investigated the functional roles of LHs (LH1, LH2, and LH3) in pulmonary fibrosis and the anti-fibrotic effects of minoxidil. Material/Methods Patient serum samples were examined for their expression of procollagen-lysine, 2-oxoglutarate 5-dioxygenases (PLOD) 1–3, the genes encoding LH 1–3. Mice with bleomycin (BLM 2.5 mg/kg)-induced pulmonary fibrosis were administered a minoxidil solution (30 mg/kg) by oral gavage. Results The PLOD mRNA levels were significantly higher in the IPF patients than in the healthy control subjects. Minoxidil suppressed the BLM-induced pulmonary fibrosis in vivo. These effects were associated with blocking TGF-β1/Smad3 signal transduction and attenuating the expression and activity of LHs, resulting in decreased collagen formation, thus reducing the pulmonary fibrosis. The anti-fibrotic effects of minoxidil may be mediated through competitive inhibition of LHs activity, resulting in decreased pyridine cross-link formation and collagen production and deposition. Conclusions The results of this study suggest that LH represents a target to prevent or treat pulmonary fibrosis, and minoxidil may provide an effective agent to inhibit LHs.
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Affiliation(s)
- Songjun Shao
- Department of Pathophysiology, Guizhou Medical University, Guiyang, Guizhou, China (mainland).,Department of Respiratory and Critical Medicine, Guizhou Provincial People's Hospital, Guiyang, Guizhou, China (mainland)
| | - Xiangning Zhang
- Department of Pathophysiology, Guangdong Medical University, Dongguan, Guangdong, China (mainland)
| | - Lingdi Duan
- Department of Pathophysiology, Guizhou Medical University, Guiyang, Guizhou, China (mainland)
| | - Haiyan Fang
- Department of Psychological Medicine, The Second People's Hospital of Guizhou Province, Guiyang, Guizhou, China (mainland)
| | - Shanshan Rao
- Department of Respiratory and Critical Medicine, Guizhou Provincial People's Hospital, Guiyang, Guizhou, China (mainland)
| | - Weijia Liu
- Department of Respiratory and Critical Medicine, Guizhou Provincial People's Hospital, Guiyang, Guizhou, China (mainland)
| | - Bing Guo
- Department of Pathophysiology, Guizhou Medical University, Guiyang, Guizhou, China (mainland)
| | - Xiangyan Zhang
- Department of Respiratory and Critical Medicine, Guizhou Provincial People's Hospital, Guiyang, Guizhou, China (mainland)
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Ricard-Blum S, Baffet G, Théret N. Molecular and tissue alterations of collagens in fibrosis. Matrix Biol 2018; 68-69:122-149. [DOI: 10.1016/j.matbio.2018.02.004] [Citation(s) in RCA: 66] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2017] [Revised: 02/02/2018] [Accepted: 02/02/2018] [Indexed: 02/07/2023]
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Qadri MM, Jay GD, Ostrom RS, Zhang LX, Elsaid KA. cAMP attenuates TGF-β's profibrotic responses in osteoarthritic synoviocytes: involvement of hyaluronan and PRG4. Am J Physiol Cell Physiol 2018; 315:C432-C443. [PMID: 29898378 DOI: 10.1152/ajpcell.00041.2018] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Osteoarthritis (OA) is characterized by synovitis and synovial fibrosis. Synoviocytes are fibroblast-like resident cells of the synovium that are activated by transforming growth factor (TGF)-β to proliferate, migrate, and produce extracellular matrix. Synoviocytes secrete hyaluronan (HA) and proteoglycan-4 (PRG4). HA reduces synovial fibrosis in vivo, and the Prg4-/- mouse exhibits synovial hyperplasia. We investigated the antifibrotic effects of increased intracellular cAMP in TGF-β-stimulated human OA synoviocytes. TGF-β1 stimulated collagen I (COL1A1), α-smooth muscle actin (α-SMA), tissue inhibitor of metalloproteinase (TIMP)-1, and procollagen-lysine, 2-oxoglutarate 5-dioxygenase 2 (PLOD2) expression, and procollagen I, α-SMA, HA, and PRG4 production, migration, and proliferation of OA synoviocytes were measured. Treatment of OA synoviocytes with forskolin (10 μM) increased intracellular cAMP levels and reduced TGF-β1-stimulated COL1A1, α-SMA, and TIMP-1 expression, with no change in PLOD2 expression. Forskolin also reduced TGF-β1-stimulated procollagen I and α-SMA content as well as synoviocyte migration and proliferation. Forskolin (10 μM) increased HA secretion and PRG4 expression and production. A cell-permeant cAMP analog reduced COL1A1 and α-SMA expression and enhanced HA and PRG4 secretion by OA synoviocytes. HA and PRG4 reduced α-SMA expression and content, and PRG4 reduced COL1A1 expression and procollagen I content in OA synoviocytes. Prg4-/- synovium exhibited increased α-SMA, COL1A1, and TIMP-1 expression compared with Prg4+/+ synovium. Prg4-/- synoviocytes demonstrated strong α-SMA and collagen type I staining, whereas these were undetected in Prg4+/+ synoviocytes and were reduced with PRG4 treatment. We conclude that increasing intracellular cAMP levels in synoviocytes mitigates synovial fibrosis through enhanced production of HA and PRG4, possibly representing a novel approach for treatment of OA synovial fibrosis.
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Affiliation(s)
- Marwa M Qadri
- Department of Biomedical and Pharmaceutical Sciences, School of Pharmacy, Chapman University , Irvine, California
| | - Gregory D Jay
- Department of Emergency Medicine, Rhode Island Hospital , Providence, Rhode Island.,Department of Biomedical Engineering, Brown University , Providence, Rhode Island
| | - Rennolds S Ostrom
- Department of Biomedical and Pharmaceutical Sciences, School of Pharmacy, Chapman University , Irvine, California
| | - Ling X Zhang
- Department of Emergency Medicine, Rhode Island Hospital , Providence, Rhode Island
| | - Khaled A Elsaid
- Department of Biomedical and Pharmaceutical Sciences, School of Pharmacy, Chapman University , Irvine, California
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van der Kraan PM. Differential Role of Transforming Growth Factor-beta in an Osteoarthritic or a Healthy Joint. J Bone Metab 2018; 25:65-72. [PMID: 29900155 PMCID: PMC5995759 DOI: 10.11005/jbm.2018.25.2.65] [Citation(s) in RCA: 64] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/03/2018] [Accepted: 05/26/2018] [Indexed: 12/24/2022] Open
Abstract
Transforming growth factor-β (TGF-β) is a cytokine that plays an important role in both normal joints and joints affected by osteoarthritis (OA), the most common joint disease. However, the role of this pleiotropic cytokine in a normal healthy joint is very different from its role in an OA joint. In a normal synovial joint, active TGF-β is only present after joint loading and only for a short period. In contrast, permanent and high levels of active TGF-β are detected in OA joints. Due to this difference in levels and exposure period of joint cells to active TGF-β, the function of TGF-β is strikingly different in normal and OA joints. The consequences of this difference in TGF-β levels on joint homeostasis and pathological changes in OA joints are discussed in this review.
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Affiliation(s)
- Peter M. van der Kraan
- Department of Rheumatology, Experimental Rheumatology, Radboud University Medical Center, Nijmegen, Netherlands
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37
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Mendes LF, Katagiri H, Tam WL, Chai YC, Geris L, Roberts SJ, Luyten FP. Advancing osteochondral tissue engineering: bone morphogenetic protein, transforming growth factor, and fibroblast growth factor signaling drive ordered differentiation of periosteal cells resulting in stable cartilage and bone formation in vivo. Stem Cell Res Ther 2018; 9:42. [PMID: 29467016 PMCID: PMC5822604 DOI: 10.1186/s13287-018-0787-3] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2017] [Revised: 01/04/2018] [Accepted: 01/22/2018] [Indexed: 02/08/2023] Open
Abstract
Background Chondrogenic mesenchymal stem cells (MSCs) have not yet been used to address the clinical demands of large osteochondral joint surface defects. In this study, self-assembling tissue intermediates (TIs) derived from human periosteum-derived stem/progenitor cells (hPDCs) were generated and validated for stable cartilage formation in vivo using two different animal models. Methods hPDCs were aggregated and cultured in the presence of a novel growth factor (GF) cocktail comprising of transforming growth factor (TGF)-β1, bone morphogenetic protein (BMP)2, growth differentiation factor (GDF)5, BMP6, and fibroblast growth factor (FGF)2. Quantitative polymerase chain reaction (PCR) and immunohistochemistry were used to study in vitro differentiation. Aggregates were then implanted ectopically in nude mice and orthotopically in critical-size osteochondral defects in nude rats and evaluated by microcomputed tomography (µCT) and immunohistochemistry. Results Gene expression analysis after 28 days of in vitro culture revealed the expression of early and late chondrogenic markers and a significant upregulation of NOGGIN as compared to human articular chondrocytes (hACs). Histological examination revealed a bilayered structure comprising of chondrocytes at different stages of maturity. Ectopically, TIs generated both bone and mineralized cartilage at 8 weeks after implantation. Osteochondral defects treated with TIs displayed glycosaminoglycan (GAG) production, type-II collagen, and lubricin expression. Immunostaining for human nuclei protein suggested that hPDCs contributed to both subchondral bone and articular cartilage repair. Conclusion Our data indicate that in vitro derived osteochondral-like tissues can be generated from hPDCs, which are capable of producing bone and cartilage ectopically and behave orthotopically as osteochondral units. Electronic supplementary material The online version of this article (10.1186/s13287-018-0787-3) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- L F Mendes
- Tissue Engineering Laboratory, Skeletal Biology and Engineering Research Center, KU Leuven, Campus Gasthuisberg O&N 1, Herestraat 49, bus 813, 3000, Leuven, Belgium.,Prometheus, Division of Skeletal Tissue Engineering, KU Leuven, O&N 1, Herestraat 49, bus 813, 3000, Leuven, Belgium
| | - H Katagiri
- Tissue Engineering Laboratory, Skeletal Biology and Engineering Research Center, KU Leuven, Campus Gasthuisberg O&N 1, Herestraat 49, bus 813, 3000, Leuven, Belgium.,Prometheus, Division of Skeletal Tissue Engineering, KU Leuven, O&N 1, Herestraat 49, bus 813, 3000, Leuven, Belgium
| | - W L Tam
- Tissue Engineering Laboratory, Skeletal Biology and Engineering Research Center, KU Leuven, Campus Gasthuisberg O&N 1, Herestraat 49, bus 813, 3000, Leuven, Belgium.,Prometheus, Division of Skeletal Tissue Engineering, KU Leuven, O&N 1, Herestraat 49, bus 813, 3000, Leuven, Belgium
| | - Y C Chai
- Tissue Engineering Laboratory, Skeletal Biology and Engineering Research Center, KU Leuven, Campus Gasthuisberg O&N 1, Herestraat 49, bus 813, 3000, Leuven, Belgium.,Prometheus, Division of Skeletal Tissue Engineering, KU Leuven, O&N 1, Herestraat 49, bus 813, 3000, Leuven, Belgium
| | - L Geris
- Tissue Engineering Laboratory, Skeletal Biology and Engineering Research Center, KU Leuven, Campus Gasthuisberg O&N 1, Herestraat 49, bus 813, 3000, Leuven, Belgium.,Prometheus, Division of Skeletal Tissue Engineering, KU Leuven, O&N 1, Herestraat 49, bus 813, 3000, Leuven, Belgium.,Biomechanics Research Unit, University of Liege, Chemin des Chevreuils 1 - BAT 52/3, 4000, Liege 1, Belgium.,Biomechanics Section, KU Leuven, Celestijnenlaan 300C bus 2419, 3001, Leuven, Belgium
| | - S J Roberts
- Tissue Engineering Laboratory, Skeletal Biology and Engineering Research Center, KU Leuven, Campus Gasthuisberg O&N 1, Herestraat 49, bus 813, 3000, Leuven, Belgium.,Prometheus, Division of Skeletal Tissue Engineering, KU Leuven, O&N 1, Herestraat 49, bus 813, 3000, Leuven, Belgium.,Institute of Orthopaedics and Musculoskeletal Science, Division of Surgery & Interventional Science, University College London, The Royal National Orthopaedic Hospital, Stanmore, Middlesex, HA7 4LP, UK
| | - F P Luyten
- Tissue Engineering Laboratory, Skeletal Biology and Engineering Research Center, KU Leuven, Campus Gasthuisberg O&N 1, Herestraat 49, bus 813, 3000, Leuven, Belgium. .,Prometheus, Division of Skeletal Tissue Engineering, KU Leuven, O&N 1, Herestraat 49, bus 813, 3000, Leuven, Belgium.
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Arthrofibrosis Associated With Total Knee Arthroplasty. J Arthroplasty 2017; 32:2604-2611. [PMID: 28285897 DOI: 10.1016/j.arth.2017.02.005] [Citation(s) in RCA: 143] [Impact Index Per Article: 20.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/17/2016] [Revised: 01/03/2017] [Accepted: 02/05/2017] [Indexed: 02/01/2023] Open
Abstract
BACKGROUND Arthrofibrosis is a debilitating postoperative complication of total knee arthroplasty (TKA). It is one of the leading causes of hospital readmission and a predominant reason for TKA failure. The prevalence of arthrofibrosis will increase as the annual incidence of TKA in the United States rises into the millions. METHODS In a narrative review of the literature, the etiology, economic burden, treatment strategies, and future research directions of arthrofibrosis after TKA are examined. RESULTS Characterized by excessive proliferation of scar tissue during an impaired wound healing response, arthrofibrotic stiffness causes functional deficits in activities of daily living. Postoperative, supervised physiotherapy remains the first line of defense against the development of arthrofibrosis. Also, adjuncts to traditional physiotherapy such as splinting and augmented soft tissue mobilization can be beneficial. The effectiveness of rehabilitation on functional outcomes depends on the appropriate timing, intensity, and progression of the program, accounting for the patient's ability and level of pain. Invasive treatments such as manipulation under anesthesia, debridement, and revision arthroplasty improve range of motion, but can be traumatic and costly. Future studies investigating novel treatments, early diagnosis, and potential preoperative screening for risk of arthrofibrosis will help target those patients who will need additional attention and tailored rehabilitation to improve TKA outcomes. CONCLUSION Arthrofibrosis is a multi-faceted complication of TKA, and is difficult to treat without an early, tailored, comprehensive rehabilitation program. Understanding the risk factors for its development and the benefits and shortcomings of various interventions are essential to best restore mobility and function.
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Duran I, Martin JH, Weis MA, Krejci P, Konik P, Li B, Alanay Y, Lietman C, Lee B, Eyre D, Cohn DH, Krakow D. A Chaperone Complex Formed by HSP47, FKBP65, and BiP Modulates Telopeptide Lysyl Hydroxylation of Type I Procollagen. J Bone Miner Res 2017; 32:1309-1319. [PMID: 28177155 PMCID: PMC5466459 DOI: 10.1002/jbmr.3095] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/31/2016] [Revised: 01/12/2017] [Accepted: 01/30/2017] [Indexed: 12/14/2022]
Abstract
Lysine hydroxylation of type I collagen telopeptides varies from tissue to tissue, and these distinct hydroxylation patterns modulate collagen cross-linking to generate a unique extracellular matrix. Abnormalities in these patterns contribute to pathologies that include osteogenesis imperfecta (OI), fibrosis, and cancer. Telopeptide procollagen modifications are carried out by lysyl hydroxylase 2 (LH2); however, little is known regarding how this enzyme regulates hydroxylation patterns. We identified an ER complex of resident chaperones that includes HSP47, FKBP65, and BiP regulating the activity of LH2. Our findings show that FKBP65 and HSP47 modulate the activity of LH2 to either favor or repress its activity. BiP was also identified as a member of the complex, playing a role in enhancing the formation of the complex. This newly identified ER chaperone complex contributes to our understanding of how LH2 regulates lysyl hydroxylation of type I collagen C-telopeptides to affect the quality of connective tissues. © 2017 American Society for Bone and Mineral Research.
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Affiliation(s)
- Ivan Duran
- Departments of Orthopaedic Surgery, David Geffen School of Medicine at the University of California at Los Angeles
- Networking Research Center on Bioengineering, Biomaterials and Nanomedicine, (CIBER-BBN). University of Malaga, Spain
| | - Jorge H. Martin
- Departments of Orthopaedic Surgery, David Geffen School of Medicine at the University of California at Los Angeles
| | - Mary Ann Weis
- Department of Orthopaedics and Sports Medicine, University of Washington, Seattle, WA
| | - Pavel Krejci
- Department of Biology, Faculty of Medicine, Masaryk University, 62500 Brno, Czech Republic
| | - Peter Konik
- Faculty of Science, University of South Bohemia, 37005 Ceske Budejovice, Czech Republic
| | - Bing Li
- Department of Molecular, Cell, and Developmental Biology, University of California at Los Angeles, Los Angeles, CA, 90095
| | - Yasemin Alanay
- Pediatric Genetics Unit, Department of Pediatrics, Acibadem University School of Medicine, Istanbul, Turkey
| | - Caressa Lietman
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX
| | - Brendan Lee
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX
- Howard Hughes Medical Institute
| | - David Eyre
- Department of Orthopaedics and Sports Medicine, University of Washington, Seattle, WA
| | - Daniel H. Cohn
- Departments of Orthopaedic Surgery, David Geffen School of Medicine at the University of California at Los Angeles
- Department of Molecular, Cell, and Developmental Biology, University of California at Los Angeles, Los Angeles, CA, 90095
| | - Deborah Krakow
- Departments of Orthopaedic Surgery, David Geffen School of Medicine at the University of California at Los Angeles
- Departments of Human Genetics, David Geffen School of Medicine at the University of California at Los Angeles
- Departments of Obstetrics and Gynecology David Geffen School of Medicine at the University of California at Los Angeles
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FKBP65-dependent peptidyl-prolyl isomerase activity potentiates the lysyl hydroxylase 2-driven collagen cross-link switch. Sci Rep 2017; 7:46021. [PMID: 28378777 PMCID: PMC5380960 DOI: 10.1038/srep46021] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2016] [Accepted: 03/09/2017] [Indexed: 12/22/2022] Open
Abstract
Bruck Syndrome is a connective tissue disease associated with inactivating mutations in lysyl hydroxylase 2 (LH2/PLOD2) or FK506 binding protein 65 (FKBP65/FKBP10). However, the functional relationship between LH2 and FKBP65 remains unclear. Here, we postulated that peptidyl prolyl isomerase (PPIase) activity of FKBP65 positively modulates LH2 enzymatic activity and is critical for the formation of hydroxylysine-aldehyde derived intermolecular collagen cross-links (HLCCs). To test this hypothesis, we analyzed collagen cross-links in Fkbp10-null and –wild-type murine embryonic fibroblasts. Although LH2 protein levels did not change, FKBP65 deficiency significantly diminished HLCCs and increased the non-hydroxylated lysine-aldehyde–derived collagen cross-links (LCCs), a pattern consistent with loss of LH2 enzymatic activity. The HLCC-to-LCC ratio was rescued in FKBP65-deficient murine embryonic fibroblasts by reconstitution with wild-type but not mutant FKBP65 that lacks intact PPIase domains. Findings from co-immunoprecipitation, protein-fragment complementation, and co-immunofluorescence assays showed that LH2 and FKBP65 are part of a common protein complex. We conclude that FKBP65 regulates LH2-mediated collagen cross-linking. Because LH2 promotes fibrosis and cancer metastasis, our findings suggest that pharmacologic strategies to target FKBP65 and LH2 may have complementary therapeutic activities.
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Nam Y, Rim YA, Jung SM, Ju JH. Cord blood cell-derived iPSCs as a new candidate for chondrogenic differentiation and cartilage regeneration. Stem Cell Res Ther 2017; 8:16. [PMID: 28129782 PMCID: PMC5273802 DOI: 10.1186/s13287-017-0477-6] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2016] [Revised: 01/03/2017] [Accepted: 01/07/2017] [Indexed: 12/12/2022] Open
Abstract
Background The native articular cartilage lacks the ability to heal. Currently, ex vivo expanded chondrocytes or bone marrow-derived mesenchymal stem cells are used to regenerate the damaged cartilage. With unlimited self-renewal ability and multipotency, human induced pluripotent stem cells (hiPSCs) have been highlighted as a new replacement cell source for cartilage repair. Still, further research is needed on cartilage regeneration using cord blood mononuclear cell-derived hiPSCs (CBMC-hiPSCs). Methods Human iPSCs were generated from CBMCs using the Sendai virus. The characterization of CBMC-hiPSCs was performed by various assays. Embryonic bodies (EBs) were obtained using CBMC-hiPSCs, and outgrowth cells were induced by plating the EBs onto a gelatin-coated plate. Expanded outgrowth cells were detached and dissociated for chondrogenic differentiation. Outgrowth cells were differentiated into chondrogenic lineage with pellet culture. Chondrogenic pellets were maintained for 30 days. The quality of chondrogenic pellets was evaluated using various staining and genetic analysis of cartilage-specific markers. Results Reprogramming was successfully done using CBMCs. CBMC-hiPSCs (n = 3) showed high pluripotency and normal karyotype. Chondrogenic pellets were generated from the outgrowth cells derived from CBMC-hiPSC EBs. The generated chondrogenic pellets showed high expression of chondrogenic genetic markers such as ACAN, COMP, COL2A1, and SOX9. The production of extracellular matrix (ECM) proteins was confirmed by safranin O, alcian blue and toluidine blue staining. Expression of collagen type II and aggrecan was detected in the accumulated ECM by immunohistological staining. Chondrogenic pellets showed low expression of fibrotic and hypertrophic cartilage marker, collagen type I and X. Conclusions This study reveals the potential of CBMC-hiPSCs as a promising candidate for cartilage regeneration. Electronic supplementary material The online version of this article (doi:10.1186/s13287-017-0477-6) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Yoojun Nam
- CiSTEM Laboratory, Convergent Research Consortium for Immunologic Disease, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, 137-701, Republic of Korea.,Division of Rheumatology, Department of Internal Medicine, Seoul St. Mary's Hospital, Institute of Medical Science, College of Medicine, The Catholic University of Korea, #505, Banpo-Dong, Seocho-Gu, Seoul, 137-701, Republic of Korea
| | - Yeri Alice Rim
- CiSTEM Laboratory, Convergent Research Consortium for Immunologic Disease, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, 137-701, Republic of Korea.,Division of Rheumatology, Department of Internal Medicine, Seoul St. Mary's Hospital, Institute of Medical Science, College of Medicine, The Catholic University of Korea, #505, Banpo-Dong, Seocho-Gu, Seoul, 137-701, Republic of Korea
| | - Seung Min Jung
- Division of Rheumatology, Department of Internal Medicine, College of Medicine, Yonsei University, Seoul, 120-749, Republic of Korea
| | - Ji Hyeon Ju
- CiSTEM Laboratory, Convergent Research Consortium for Immunologic Disease, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, 137-701, Republic of Korea. .,Division of Rheumatology, Department of Internal Medicine, Seoul St. Mary's Hospital, Institute of Medical Science, College of Medicine, The Catholic University of Korea, #505, Banpo-Dong, Seocho-Gu, Seoul, 137-701, Republic of Korea.
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Chen Y, Guo H, Terajima M, Banerjee P, Liu X, Yu J, Momin AA, Katayama H, Hanash SM, Burns AR, Fields GB, Yamauchi M, Kurie JM. Lysyl Hydroxylase 2 Is Secreted by Tumor Cells and Can Modify Collagen in the Extracellular Space. J Biol Chem 2016; 291:25799-25808. [PMID: 27803159 DOI: 10.1074/jbc.m116.759803] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2016] [Revised: 10/28/2016] [Indexed: 12/19/2022] Open
Abstract
Lysyl hydroxylase 2 (LH2) catalyzes the hydroxylation of lysine residues in the telopeptides of fibrillar collagens, which leads to the formation of stable collagen cross-links. Recently we reported that LH2 enhances the metastatic propensity of lung cancer by increasing the amount of stable hydroxylysine aldehyde-derived collagen cross-links (HLCCs), which generate a stiffer tumor stroma (Chen, Y., et al. (2015) J. Clin. Invest. 125, 125, 1147-1162). It is generally accepted that LH2 modifies procollagen α chains on the endoplasmic reticulum before the formation of triple helical procollagen molecules. Herein, we report that LH2 is also secreted and modifies collagen in the extracellular space. Analyses of lung cancer cell lines demonstrated that LH2 is present in the cell lysates and the conditioned media in a dimeric, active form in both compartments. LH2 co-localized with collagen fibrils in the extracellular space in human lung cancer specimens and in orthotopic lung tumors generated by injection of a LH2-expressing human lung cancer cell line into nude mice. LH2 depletion in MC3T3 osteoblastic cells impaired the formation of HLCCs, resulting in an increase in the unmodified lysine aldehyde-derived collagen cross-link (LCC), and the addition of recombinant LH2 to the media of LH2-deficient MC3T3 cells was sufficient to rescue HLCC formation in the extracellular matrix. The finding that LH2 modifies collagen in the extracellular space challenges the current view that LH2 functions solely on the endoplasmic reticulum and could also have important implications for cancer biology.
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Affiliation(s)
- Yulong Chen
- From the Department of Thoracic/Head and Neck Medical Oncology, University of Texas MD Anderson Cancer Center, Houston, Texas 77030
| | - Houfu Guo
- From the Department of Thoracic/Head and Neck Medical Oncology, University of Texas MD Anderson Cancer Center, Houston, Texas 77030
| | - Masahiko Terajima
- Oral and Craniofacial Health Sciences, School of Dentistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599
| | - Priyam Banerjee
- From the Department of Thoracic/Head and Neck Medical Oncology, University of Texas MD Anderson Cancer Center, Houston, Texas 77030
| | - Xin Liu
- From the Department of Thoracic/Head and Neck Medical Oncology, University of Texas MD Anderson Cancer Center, Houston, Texas 77030
| | - Jiang Yu
- From the Department of Thoracic/Head and Neck Medical Oncology, University of Texas MD Anderson Cancer Center, Houston, Texas 77030
| | - Amin A Momin
- the Department of Clinical Cancer Prevention, University of Texas MD Anderson Cancer Center, Houston, Texas 77030
| | - Hiroyuki Katayama
- the Department of Clinical Cancer Prevention, University of Texas MD Anderson Cancer Center, Houston, Texas 77030
| | - Samir M Hanash
- the Department of Clinical Cancer Prevention, University of Texas MD Anderson Cancer Center, Houston, Texas 77030
| | - Alan R Burns
- the College of Optometry, University of Houston, Houston, Texas 77004, and
| | - Gregg B Fields
- the Department of Chemistry and Biochemistry, Florida Atlantic University, Jupiter, Florida 33458
| | - Mitsuo Yamauchi
- Oral and Craniofacial Health Sciences, School of Dentistry, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599,
| | - Jonathan M Kurie
- From the Department of Thoracic/Head and Neck Medical Oncology, University of Texas MD Anderson Cancer Center, Houston, Texas 77030,
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Grotenhuis N, De Witte SF, van Osch GJ, Bayon Y, Lange JF, Bastiaansen-Jenniskens YM. Biomaterials Influence Macrophage–Mesenchymal Stem Cell Interaction In Vitro. Tissue Eng Part A 2016; 22:1098-107. [DOI: 10.1089/ten.tea.2016.0162] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Affiliation(s)
- Nienke Grotenhuis
- Department of Otorhinolaryngology, Erasmus MC University Medical Centre, Rotterdam, The Netherlands
- Department of General Surgery, Erasmus MC University Medical Centre, Rotterdam, The Netherlands
| | - Samantha F.H. De Witte
- Department of Internal Medicine, Erasmus MC University Medical Centre, Rotterdam, The Netherlands
| | - Gerjo J.V.M. van Osch
- Department of Otorhinolaryngology, Erasmus MC University Medical Centre, Rotterdam, The Netherlands
- Department of Orthopaedics, Erasmus MC University Medical Centre, Rotterdam, The Netherlands
| | - Yves Bayon
- Sofradim Production, A Medtronic Company, Trévoux, France
| | - Johan F. Lange
- Department of General Surgery, Erasmus MC University Medical Centre, Rotterdam, The Netherlands
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45
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Poulet B, Staines KA. New developments in osteoarthritis and cartilage biology. Curr Opin Pharmacol 2016; 28:8-13. [DOI: 10.1016/j.coph.2016.02.009] [Citation(s) in RCA: 69] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2015] [Revised: 02/11/2016] [Accepted: 02/12/2016] [Indexed: 01/05/2023]
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McNerny EMB, Gardinier JD, Kohn DH. Exercise increases pyridinoline cross-linking and counters the mechanical effects of concurrent lathyrogenic treatment. Bone 2015; 81:327-337. [PMID: 26211995 PMCID: PMC4640975 DOI: 10.1016/j.bone.2015.07.030] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/16/2015] [Revised: 07/14/2015] [Accepted: 07/21/2015] [Indexed: 01/22/2023]
Abstract
The collagen cross-link profile of bone, associated with bone strength and fracture toughness, is tightly regulated (affecting cross-link quantity, type, lysine hydroxylation and maturity) and may contribute to the improvements in bone quality during exercise. We hypothesized that 1) exercise promotes mature cross-link formation, 2) increased mature cross-linking is accompanied by shifts in lysine hydroxylation, and 3) these changes in collagen cross-link profile have positive effects on mechanical properties. Growing male C57Bl6 mice were treated with 30 min/day of running exercise, 350 mg/kg/day β-aminopropionitrile (BAPN) injected subcutaneously to inhibit enzymatic collagen cross-linking, or both exercise and BAPN, from 5 to 8 weeks of age. Bone collagen cross-linking profile, mechanical properties, morphology, and mineralization were measured from the tibiae. Cross-link measures, including immature, pyridinoline, pyrrole and pentosidine cross-links, ratios reflecting cross-link maturity and hydroxylation, and mineralization were tested for their importance to mechanical properties across 8 week groups through correlation analyses and step-wise linear regressions. BAPN treatment significantly reduced lysylpyridinoline, pyrrole, hydroxylysinorleucine, and total mature collagen cross-linking, resulting in decreased bone elastic modulus and increased yield strain despite a marginal increase in TMD. Exercise caused a shift toward pyridinoline cross-linking, with increased hydroxylysylpyridinoline and decreased pyrrole cross-linking resulting in total mature cross-linking and estimated tissue level mechanical properties matching sedentary control levels. Exercise superimposed on BAPN treatment increased total mature cross-linking from BAPN to control levels, but did so by increasing pyridinoline, not pyrrole, cross-links. Exercise also counteracted the BAPN effects on modulus and strain, without a change in TMD. Pyrrole cross-linking was the strongest correlate of modulus (r=0.470, p<0.01) and yield strain (r=-0.467, p<0.01). Cross-links with similar levels of telopeptide lysine hydroxylation to pyrrole (lysylpyridinoline and hydroxylysinorleucine) also correlated with modulus and strain to a lesser extent. In conclusion, exercise in growing mice promotes pyridinoline collagen cross-linking in bone, the resulting increase in total mature cross-linking is sufficient to counteract the mechanical effects of concurrent cross-link inhibition, and this responsiveness to loading is a potential means by which exercise might improve bone quality in diseased or otherwise compromised bone.
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Affiliation(s)
- Erin M B McNerny
- Department of Biomedical Engineering, College of Engineering and Medical School, University of Michigan, MI, USA
| | - Joseph D Gardinier
- Department of Biologic and Materials Sciences, School of Dentistry, University of Michigan, MI, USA
| | - David H Kohn
- Department of Biomedical Engineering, College of Engineering and Medical School, University of Michigan, MI, USA; Department of Biologic and Materials Sciences, School of Dentistry, University of Michigan, MI, USA.
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Human genome-wide expression analysis reorients the study of inflammatory mediators and biomechanics in osteoarthritis. Osteoarthritis Cartilage 2015; 23:1939-45. [PMID: 26521740 PMCID: PMC4630670 DOI: 10.1016/j.joca.2015.03.027] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/01/2014] [Revised: 02/19/2015] [Accepted: 03/20/2015] [Indexed: 02/02/2023]
Abstract
A major objective of this article is to examine the research implications of recently available genome-wide expression profiles of cartilage from human osteoarthritis (OA) joints. We propose that, when viewed in the light of extensive earlier work, this novel data provides a unique opportunity to reorient the design of experimental systems toward clinical relevance. Specifically, in the area of cartilage explant biology, this will require a fresh evaluation of existing paradigms, so as to optimize the choices of tissue source, cytokine/growth factor/nutrient addition, and biomechanical environment for discovery. Within this context, we firstly discuss the literature on the nature and role of potential catabolic mediators in OA pathology, including data from human OA cartilage, animal models of OA, and ex vivo studies. Secondly, due to the number and breadth of studies on IL-1β in this area, a major focus of the article is a critical analysis of the design and interpretation of cartilage studies where IL-1β has been used as a model cytokine. Thirdly, the article provides a data-driven perspective (including genome-wide analysis of clinical samples, studies on mutant mice, and clinical trials), which concludes that IL-1β should be replaced by soluble mediators such as IL-17 or TGF-β1, which are much more likely to mimic the disease in OA model systems. We also discuss the evidence that changes in early OA can be attributed to the activity of such soluble mediators, whereas late-stage disease results more from a chronic biomechanical effect on the matrix and cells of the remaining cartilage and on other local mediator-secreting cells. Lastly, an updated protocol for in vitro studies with cartilage explants and chondrocytes (including the use of specific gene expression arrays) is provided to motivate more disease-relevant studies on the interplay of cytokines, growth factors, and biomechanics on cellular behavior.
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Gjaltema RAF, de Rond S, Rots MG, Bank RA. Procollagen Lysyl Hydroxylase 2 Expression Is Regulated by an Alternative Downstream Transforming Growth Factor β-1 Activation Mechanism. J Biol Chem 2015; 290:28465-28476. [PMID: 26432637 DOI: 10.1074/jbc.m114.634311] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2014] [Indexed: 11/06/2022] Open
Abstract
PLOD2 (procollagen-lysine, 2-oxoglutarate 5-dioxygenase 2) hydroxylates lysine residues in collagen telopeptides and is essential for collagen pyridinoline cross-link formation. PLOD2 expression and subsequent pyridinoline cross-links are increased in fibrotic pathologies by transforming growth factor β-1 (TGFβ1). In this report we examined the molecular processes underlying TGFβ1-induced PLOD2 expression. We found that binding of the TGFβ1 pathway related transcription factors SMAD3 and SP1-mediated TGFβ1 enhanced PLOD2 expression and could be correlated to an increase of acetylated histone H3 and H4 at the PLOD2 promoter. Interestingly, the classical co-activators of SMAD3 complexes, p300 and CBP, were not responsible for the enhanced H3 and H4 acetylation. Depletion of SMAD3 reduced PLOD2 acetylated H3 and H4, indicating that another as of yet unidentified histone acetyltransferase binds to SMAD3 at PLOD2. Assessing histone methylation marks at the PLOD2 promoter depicted an increase of the active histone mark H3K79me2, a decrease of the repressive H4K20me3 mark, but no role for the generally strong transcription-related modifications: H3K4me3, H3K9me3 and H3K27me3. Collectively, our findings reveal that TGFβ1 induces a SP1- and SMAD3-dependent recruitment of histone modifying enzymes to the PLOD2 promoter other than the currently known TGFβ1 downstream co-activators and epigenetic modifications. This also suggests that additional activation strategies are used downstream of the TGFβ1 pathway, and hence their unraveling could be of great importance to fully understand TGFβ1 activation of genes.
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Affiliation(s)
- Rutger A F Gjaltema
- MATRIX Research Group, Department of Pathology and Medical Biology, University Medical Center Groningen, University of Groningen, 9713 GZ Groningen, The Netherlands; Epigenetic Editing Research Group, Department of Pathology and Medical Biology, University Medical Center Groningen, University of Groningen, 9713 GZ Groningen, The Netherlands
| | - Saskia de Rond
- MATRIX Research Group, Department of Pathology and Medical Biology, University Medical Center Groningen, University of Groningen, 9713 GZ Groningen, The Netherlands
| | - Marianne G Rots
- Epigenetic Editing Research Group, Department of Pathology and Medical Biology, University Medical Center Groningen, University of Groningen, 9713 GZ Groningen, The Netherlands
| | - Ruud A Bank
- MATRIX Research Group, Department of Pathology and Medical Biology, University Medical Center Groningen, University of Groningen, 9713 GZ Groningen, The Netherlands.
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Remst DFG, Blaney Davidson EN, van der Kraan PM. Unravelling osteoarthritis-related synovial fibrosis: a step closer to solving joint stiffness. Rheumatology (Oxford) 2015; 54:1954-63. [PMID: 26175472 DOI: 10.1093/rheumatology/kev228] [Citation(s) in RCA: 79] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2014] [Indexed: 01/01/2023] Open
Abstract
Synovial fibrosis is often found in OA, contributing heavily to joint pain and joint stiffness, the main symptoms of OA. At this moment the underlying mechanism of OA-related synovial fibrosis is not known and there is no cure available. In this review we discuss factors that have been reported to be involved in synovial fibrosis. The aim of the study was to gain insight into how these factors contribute to the fibrotic process and to determine the best targets for therapy in synovial fibrosis. In this regard, the following factors are discussed: TGF-β, connective tissue growth factor, procollagen-lysine, 2-oxoglutarate 5-dioxygenase 2, tissue inhibitor of metalloproteinase 1, A disintegrin and metalloproteinase domain 12, urotensin-II, prostaglandin F2α and hyaluronan.
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Affiliation(s)
- Dennis F G Remst
- Radboud University Medical Center, Experimental Rheumatology, Nijmegen, The Netherlands
| | | | - Peter M van der Kraan
- Radboud University Medical Center, Experimental Rheumatology, Nijmegen, The Netherlands
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50
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Remst DFG, Blom AB, Vitters EL, Bank RA, van den Berg WB, Blaney Davidson EN, van der Kraan PM. Gene expression analysis of murine and human osteoarthritis synovium reveals elevation of transforming growth factor β-responsive genes in osteoarthritis-related fibrosis. Arthritis Rheumatol 2014; 66:647-56. [PMID: 24574225 DOI: 10.1002/art.38266] [Citation(s) in RCA: 89] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2013] [Accepted: 10/31/2013] [Indexed: 02/01/2023]
Abstract
OBJECTIVE Synovial fibrosis is a major contributor to joint stiffness in osteoarthritis (OA). Transforming growth factor β (TGFβ), which is elevated in OA, plays a key role in the onset and persistence of synovial fibrosis. However, blocking of TGFβ in OA as a therapeutic intervention for fibrosis is not an option since TGFβ is crucial for cartilage maintenance and repair. Therefore, we undertook the present study to seek targets downstream of TGFβ for preventing OA-related fibrosis without interfering with joint homeostasis. METHODS Experiments were performed to determine whether genes involved in extracellular matrix turnover were responsive to TGFβ and were elevated in OA-related fibrosis. We analyzed gene expression in TGFβ-stimulated human OA synovial fibroblasts and in the synovium of mice with TGFβ-induced fibrosis, mice with experimental OA, and humans with end-stage OA. Gene expression was determined by microarray, low-density array, or quantitative polymerase chain reaction analysis. RESULTS We observed an increase in expression of procollagen genes and genes encoding collagen crosslinking enzymes under all of the OA-related fibrotic conditions investigated. Comparison of gene expression in TGFβ-stimulated human OA synovial fibroblasts, synovium from mice with experimental OA, and synovium from humans with end-stage OA revealed that the genes PLOD2, LOX, COL1A1, COL5A1, and TIMP1 were up-regulated in all of these conditions. Additionally, we confirmed that these genes were up-regulated by TGFβ in vivo in mice with TGFβ-induced synovial fibrosis. CONCLUSION Most of the up-regulated genes identified in this study would be poor targets for therapy development, due to their crucial functions in the joint. However, the highly up-regulated gene PLOD2, responsible for the formation of collagen crosslinks that make collagen less susceptible to enzymatic degradation, is an attractive and promising target for interference in OA-related synovial fibrosis.
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Affiliation(s)
- D F G Remst
- Radboud University Nijmegen Medical Centre, Nijmegen, The Netherlands
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