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Xu L, Ma J, Yu Q, Zhu K, Wu X, Zhou C, Lin X. Evidence supported by Mendelian randomization: impact on inflammatory factors in knee osteoarthritis. Front Med (Lausanne) 2024; 11:1382836. [PMID: 38863887 PMCID: PMC11165061 DOI: 10.3389/fmed.2024.1382836] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2024] [Accepted: 05/01/2024] [Indexed: 06/13/2024] Open
Abstract
Background Prior investigations have indicated associations between Knee Osteoarthritis (KOA) and certain inflammatory cytokines, such as the interleukin series and tumor necrosis factor-alpha (TNFα). To further elaborate on these findings, our investigation utilizes Mendelian randomization to explore the causal relationships between KOA and 91 inflammatory cytokines. Methods This two-sample Mendelian randomization utilized genetic variations associated with KOA from a large, publicly accessible Genome-Wide Association Study (GWAS), comprising 2,227 cases and 454,121 controls of European descent. The genetic data for inflammatory cytokines were obtained from a GWAS summary involving 14,824 individuals of European ancestry. Causal relationships between exposures and outcomes were primarily investigated using the inverse variance weighted method. To enhance the robustness of the research results, other methods were combined to assist, such as weighted median, weighted model and so on. Multiple sensitivity analysis, including MR-Egger, MR-PRESSO and leave one out, was also carried out. These different analytical methods are used to enhance the validity and reliability of the final results. Results The results of Mendelian randomization indicated that Adenosine Deaminase (ADA), Fibroblast Growth Factor 5(FGF5), and Hepatocyte growth factor (HFG) proteins are protective factors for KOA (IVWADA: OR = 0.862, 95% CI: 0.771-0.963, p = 0.008; IVWFGF5: OR = 0.850, 95% CI: 0.764-0.946, p = 0.003; IVWHFG: OR = 0.798, 95% CI: 0.642-0.991, p = 0.042), while Tumor necrosis factor (TNFα), Colony-stimulating factor 1(CSF1), and Tumor necrosis factor ligand superfamily member 12(TWEAK) proteins are risk factors for KOA. (IVWTNFα: OR = 1.319, 95% CI: 1.067-1.631, p = 0.011; IVWCSF1: OR = 1.389, 95% CI: 1.125-1.714, p = 0.002; IVWTWEAK: OR = 1.206, 95% CI: 1.016-1.431, p = 0.032). Conclusion The six proteins identified in this study demonstrate a close association with the onset of KOA, offering valuable insights for future therapeutic interventions. These findings contribute to the growing understanding of KOA at the microscopic protein level, paving the way for potential targeted therapeutic approaches.
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Affiliation(s)
- Lilei Xu
- Third Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, China
| | - Jiaqi Ma
- Third Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, China
| | - Qing Yu
- Third Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, China
| | - Kean Zhu
- Third Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, China
| | - Xuewen Wu
- Third Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, China
| | - Chuanlong Zhou
- Third Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, China
- Department of Acupuncture, Third Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, China
| | - Xianming Lin
- Third Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, China
- Department of Acupuncture, Third Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, China
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2
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Huang C, Zhao Y, Lin S, Li L, Guo X, Yumiseba S, Yang JD, Hariri R, Ye Q, He S, Kilcoyne A. Characterization of human placenta-derived exosome (pExo) as a potential osteoarthritis disease modifying therapeutic. Arthritis Res Ther 2023; 25:229. [PMID: 38017556 PMCID: PMC10683254 DOI: 10.1186/s13075-023-03219-z] [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: 08/11/2023] [Accepted: 11/22/2023] [Indexed: 11/30/2023] Open
Abstract
OBJECTIVE Human placenta-derived exosomes (pExo) were generated, characterized, and evaluated as a therapeutic candidate for the treatment of osteoarthritis (OA). METHODS pExo was generated from full-term human placenta tissues by sequential centrifugation, purification, and sterile filtration. Upon analysis of particle size, cytokine composition, and exosome marker expression, pExo was further tested in cell-based assays to examine its effects on human chondrocytes. In vivo therapeutic efficacies were evaluated in a medial meniscal tear/medial collateral ligament tear (MCLT + MMT) rat model, in which animals received pExo injections intraarticularly and weight bearing tests during in-life stage while histopathology and immunohistochemistry were performed as terminal endpoints. RESULTS pExo displayed typical particle size, expressed maker proteins of exosome, and contained proteins with pro-proliferative, pro-anabolic, anti-catabolic, or anti-inflammatory activities. In vitro, pExo promoted chondrocyte migration and proliferation dose-dependently, which may involve its activation of cell growth-related signaling pathways. Expression of inflammatory and catabolic genes induced in a cellular OA model was significantly suppressed by pExo. In the rat OA model, pExo alleviated pain burden, restored cartilage degeneration, and downregulated expressions of pro-inflammatory, catabolic, or apoptotic proteins in a dose-dependent manner. CONCLUSIONS Our study demonstrates that pExo has multiple potential therapeutic effects including symptom control and disease modifying characteristics. This may make it an attractive candidate for further development as an anti-OA therapeutic.
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Affiliation(s)
- Chenfei Huang
- Celularity Inc., 170 Park Avenue, Florham Park, NJ, 07932, USA
| | - Yuechao Zhao
- Celularity Inc., 170 Park Avenue, Florham Park, NJ, 07932, USA.
| | - Shengchen Lin
- Celularity Inc., 170 Park Avenue, Florham Park, NJ, 07932, USA
| | - Lin Li
- Celularity Inc., 170 Park Avenue, Florham Park, NJ, 07932, USA
| | - Xuan Guo
- Celularity Inc., 170 Park Avenue, Florham Park, NJ, 07932, USA
| | | | - Jeng-Dar Yang
- Celularity Inc., 170 Park Avenue, Florham Park, NJ, 07932, USA
| | - Robert Hariri
- Celularity Inc., 170 Park Avenue, Florham Park, NJ, 07932, USA
| | - Qian Ye
- Celularity Inc., 170 Park Avenue, Florham Park, NJ, 07932, USA
| | - Shuyang He
- Celularity Inc., 170 Park Avenue, Florham Park, NJ, 07932, USA
| | - Adrian Kilcoyne
- Celularity Inc., 170 Park Avenue, Florham Park, NJ, 07932, USA
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3
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Zhang C, Wang G, An Y. Achieving Nasal Septal Cartilage In Situ Regeneration: Focus on Cartilage Progenitor Cells. Biomolecules 2023; 13:1302. [PMID: 37759702 PMCID: PMC10527213 DOI: 10.3390/biom13091302] [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: 06/23/2023] [Revised: 08/10/2023] [Accepted: 08/17/2023] [Indexed: 09/29/2023] Open
Abstract
The nasal septal cartilage plays an important role in preventing the collapse of the nasal bones and maintaining the appearance of the nose. In the context of inherent difficulties regarding septal cartilage repair and the shortage of cartilage graft resources for regeneration, tissue engineering, especially the in situ strategy based on scaffolds, has become a new prospect and become one of the most promising approaches. Given that it is difficult for chondrocytes to achieve directional migration and secrete matrix components to participate in tissue repair after cartilage injury, cartilage progenitor cells (CPCs), with great migratory ability and stem cell characteristics, have caught the attention of researchers and brought hope for nasal septal cartilage in situ regeneration. In this review, we first summarized the distribution, characteristics, isolation, and culture methods of nasal septal CPCs. Subsequently, we described the roles of migratory CPCs in cartilage regeneration. Finally, we reviewed the existing studies on CPCs-based cartilage tissue engineering and summarized the strategies for promoting the migration and chondrogenesis of CPCs so as to provide ideas for achieving nasal septal cartilage in situ regeneration.
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Affiliation(s)
| | | | - Yang An
- Department of Plastic Surgery, Peking University Third Hospital, 49 North Garden Road, Haidian District, Beijing 100191, China; (C.Z.)
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4
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Nativel F, Smith A, Boulestreau J, Lépine C, Baron J, Marquis M, Vignes C, Le Guennec Y, Veziers J, Lesoeur J, Loll F, Halgand B, Renard D, Abadie J, Legoff B, Blanchard F, Gauthier O, Vinatier C, Rieux AD, Guicheux J, Le Visage C. Micromolding-based encapsulation of mesenchymal stromal cells in alginate for intraarticular injection in osteoarthritis. Mater Today Bio 2023; 19:100581. [PMID: 36896417 PMCID: PMC9988569 DOI: 10.1016/j.mtbio.2023.100581] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Revised: 01/27/2023] [Accepted: 02/10/2023] [Indexed: 02/15/2023] Open
Abstract
Osteoarthritis (OA) is an inflammatory joint disease that affects cartilage, subchondral bone, and joint tissues. Undifferentiated Mesenchymal Stromal Cells are a promising therapeutic option for OA due to their ability to release anti-inflammatory, immuno-modulatory, and pro-regenerative factors. They can be embedded in hydrogels to prevent their tissue engraftment and subsequent differentiation. In this study, human adipose stromal cells are successfully encapsulated in alginate microgels via a micromolding method. Microencapsulated cells retain their in vitro metabolic activity and bioactivity and can sense and respond to inflammatory stimuli, including synovial fluids from OA patients. After intra-articular injection in a rabbit model of post-traumatic OA, a single dose of microencapsulated human cells exhibit properties matching those of non-encapsulated cells. At 6 and 12 weeks post-injection, we evidenced a tendency toward a decreased OA severity, an increased expression of aggrecan, and a reduced expression of aggrecanase-generated catabolic neoepitope. Thus, these findings establish the feasibility, safety, and efficacy of injecting cells encapsulated in microgels, opening the door to a long-term follow-up in canine OA patients.
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Affiliation(s)
- Fabien Nativel
- Nantes Université, ONIRIS, Univ Angers, CHU Nantes, INSERM, Regenerative Medicine and Skeleton, RMeS, UMR 1229, F-44000 Nantes, France
| | - Audrey Smith
- Nantes Université, ONIRIS, Univ Angers, CHU Nantes, INSERM, Regenerative Medicine and Skeleton, RMeS, UMR 1229, F-44000 Nantes, France.,UCLouvain, Louvain Drug Research Institute, Advanced Drug Delivery and Biomaterials, 1200, Bruxelles, Belgium
| | - Jeremy Boulestreau
- Nantes Université, ONIRIS, Univ Angers, CHU Nantes, INSERM, Regenerative Medicine and Skeleton, RMeS, UMR 1229, F-44000 Nantes, France
| | - Charles Lépine
- Nantes Université, CHU Nantes, Department of Pathology, F-44000 Nantes, France
| | - Julie Baron
- Nantes Université, CHU Nantes, Department of Pathology, F-44000 Nantes, France
| | - Melanie Marquis
- UR1268 BIA (Biopolymères Interactions Assemblages), INRAE, F-44300 Nantes, France
| | - Caroline Vignes
- Nantes Université, ONIRIS, Univ Angers, CHU Nantes, INSERM, Regenerative Medicine and Skeleton, RMeS, UMR 1229, F-44000 Nantes, France
| | - Yoan Le Guennec
- Nantes Université, ONIRIS, Univ Angers, CHU Nantes, INSERM, Regenerative Medicine and Skeleton, RMeS, UMR 1229, F-44000 Nantes, France
| | - Joelle Veziers
- Nantes Université, ONIRIS, Univ Angers, CHU Nantes, INSERM, Regenerative Medicine and Skeleton, RMeS, UMR 1229, F-44000 Nantes, France
| | - Julie Lesoeur
- Nantes Université, ONIRIS, Univ Angers, CHU Nantes, INSERM, Regenerative Medicine and Skeleton, RMeS, UMR 1229, F-44000 Nantes, France
| | - François Loll
- Nantes Université, ONIRIS, Univ Angers, CHU Nantes, INSERM, Regenerative Medicine and Skeleton, RMeS, UMR 1229, F-44000 Nantes, France
| | - Boris Halgand
- Nantes Université, ONIRIS, Univ Angers, CHU Nantes, INSERM, Regenerative Medicine and Skeleton, RMeS, UMR 1229, F-44000 Nantes, France
| | - Denis Renard
- UR1268 BIA (Biopolymères Interactions Assemblages), INRAE, F-44300 Nantes, France
| | - Jerome Abadie
- LabONIRIS, ONIRIS (Nantes Atlantic College of Veterinary Medicine, Food Science and Engineering), F-44300 Nantes, France
| | - Benoit Legoff
- Nantes Université, ONIRIS, Univ Angers, CHU Nantes, INSERM, Regenerative Medicine and Skeleton, RMeS, UMR 1229, F-44000 Nantes, France
| | - Frederic Blanchard
- Nantes Université, ONIRIS, Univ Angers, CHU Nantes, INSERM, Regenerative Medicine and Skeleton, RMeS, UMR 1229, F-44000 Nantes, France
| | - Olivier Gauthier
- Nantes Université, ONIRIS, Univ Angers, CHU Nantes, INSERM, Regenerative Medicine and Skeleton, RMeS, UMR 1229, F-44000 Nantes, France.,ONIRIS Nantes-Atlantic College of Veterinary Medicine, Centre de Recherche et D'investigation Préclinique (CRIP), F-44300 Nantes, France
| | - Claire Vinatier
- Nantes Université, ONIRIS, Univ Angers, CHU Nantes, INSERM, Regenerative Medicine and Skeleton, RMeS, UMR 1229, F-44000 Nantes, France
| | - Anne des Rieux
- UCLouvain, Louvain Drug Research Institute, Advanced Drug Delivery and Biomaterials, 1200, Bruxelles, Belgium
| | - Jerome Guicheux
- Nantes Université, ONIRIS, Univ Angers, CHU Nantes, INSERM, Regenerative Medicine and Skeleton, RMeS, UMR 1229, F-44000 Nantes, France
| | - Catherine Le Visage
- Nantes Université, ONIRIS, Univ Angers, CHU Nantes, INSERM, Regenerative Medicine and Skeleton, RMeS, UMR 1229, F-44000 Nantes, France
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5
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Que W, Liu H, Yang Q. CircPRKCH modulates extracellular matrix formation and metabolism by regulating the miR-145/HGF axis in osteoarthritis. Arthritis Res Ther 2022; 24:216. [PMID: 36068644 PMCID: PMC9447342 DOI: 10.1186/s13075-022-02893-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Accepted: 08/12/2022] [Indexed: 08/30/2023] Open
Abstract
BACKGROUND Osteoarthritis (OA) is a chronic degenerative joint disease. Extracellular matrix (ECM) degradation is essential for OA progression. Previous studies have shown that circular RNAs (circRNAs) are involved in the pathological process of OA. CircPRKCH has been shown to be upregulated in OA chondrocytes. The present study was aimed to explore the roles of circPRKCH in vivo and in vitro models of OA and its underlying molecular mechanisms. METHODS IL-1β-induced chondrocytes and mice injected with monosodium iodoacetate were used as OA models in vitro and in vivo, respectively. RT-qPCR was performed to measure the expression of circPRKCH, miR-145, and HGF in cartilage tissues and chondrocytes. The interaction between miR-145 and circPRKCH or HGF was verified by a dual-luciferase reporter assay. Chondrocyte apoptosis, viability, and ECM-related proteins were examined by flow cytometry, MTT assay, and Western blotting, respectively. Histopathological changes were detected by HE and Safranin O-fast green staining. RESULTS The expression of circPRKCH and HGF was increased in OA cartilage tissues and IL-1β-treated chondrocytes, while miR-145 expression was decreased. IL-1β induced chondrocyte apoptosis and ECM degradation in chondrocytes. Moreover, circPRKCH promoted HGF expression and activated HGF/c-MET by directly binding to miR-145. miR-145 knockdown or HGF overexpression significantly reversed circPRKCH knockdown-mediated inhibition of apoptosis and ECM degradation in IL-1β-induced chondrocytes. Besides, miR-145 overexpression alleviated IL-1β-induced chondrocyte apoptosis and ECM degradation by inhibiting HGF/c-MET. Finally, circPRKCH knockdown reduced ECM degradation by regulating the miR-145/HGF axis in an experimental OA model in mice. CONCLUSION Our study demonstrated that circPRKCH promoted chondrocyte apoptosis and ECM degradation via the miR-145/HGF axis in OA, which may provide a novel target for OA treatment.
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Affiliation(s)
- Wenzhong Que
- Department of Rheumatology, Fuzhou No. 1 Hospital Affiliated with Fujian Medical University, Taijiang District, Fuzhou, 350000, Fujian Province, China.
| | - Huili Liu
- Department of Medical Technology, Zhangzhou Health Vocational College, Zhangzhou, 363000, Fujian Province, China
| | - Qinqin Yang
- College of Pharmacy, Fujian Medical University, Fuzhou, 350005, Fujian Province, China
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6
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Desando G, Bartolotti I, Cattini L, Tschon M, Martini L, Fini M, Schiavinato A, Soranzo C, Grigolo B. Prospects on the Potential In Vitro Regenerative Features of Mechanically Treated-Adipose Tissue for Osteoarthritis Care. Stem Cell Rev Rep 2021; 17:1362-1373. [PMID: 33469783 PMCID: PMC8316247 DOI: 10.1007/s12015-020-10099-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/25/2020] [Indexed: 11/06/2022]
Abstract
Gathering a better grasp on the adipose stromal vascular fraction (SVF) is demanding among clinicians for osteoarthritis (OA) care because of its promising but multifaceted clinical outcomes. The aim of this preclinical in vitro study was to test whether the mechanical approach with Hy-Tissue SVF system, a class IIa CE marked device of adipose tissue micro-fragmentation, influences the biological features and functions of SVF. We compared mechanical generated-SVF (mSVF) with the enzymatic generated-SVF (eSVF) by testing cell survival, phenotype, differentiation, and paracrine properties using ELISA assays. Both adipose SVF showed 80% viable cells and enrichment for CD-44 marker. The mSVF product preserved the functions of cell populations within the adipose tissue; however, it displayed lowered nucleated cell recovery and CFU-F than eSVF. As for multipotency, mSVF and eSVF showed similar differentiation commitment for osteochondral lineages. Both adipose SVF exhibited an increased release of VEGF, HGF, IGF-1 and PDGF-bb, involved in pathways mediating osteochondral repair and cell migration. Both mSVF and eSVF also displayed high release for the anti-inflammatory cytokine IL-10. After in vitro culture, supernatants from both mSVF and eSVF groups showed a low release of cytokines except for IL-10, thereby giving evidence of functional changes after culture expansion. In this study, mSVF showed active cell populations in the adipose tissue comparable to eSVF with excellent survival, differentiation and paracrine properties under a new mechanical adipose tissue micro-fragmentation system; thereby suggesting its potential use as a minimally invasive technique for OA treatment.
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Affiliation(s)
- G Desando
- Laboratorio RAMSES, IRCCS Istituto Ortopedico Rizzoli, Bologna, 40136, Italy.
| | - I Bartolotti
- Laboratorio RAMSES, IRCCS Istituto Ortopedico Rizzoli, Bologna, 40136, Italy
| | - L Cattini
- Laboratorio di ImmunoReumatologia e Rigenerazione Tissutale, IRCCS Istituto Ortopedico Rizzoli, Bologna, 40136, Italia
| | - M Tschon
- Scienze e Tecnologie Chirurgiche, IRCCS Istituto Ortopedico Rizzoli, Bologna, 40136, Italia
| | - L Martini
- Scienze e Tecnologie Chirurgiche, IRCCS Istituto Ortopedico Rizzoli, Bologna, 40136, Italia
| | - M Fini
- Scienze e Tecnologie Chirurgiche, IRCCS Istituto Ortopedico Rizzoli, Bologna, 40136, Italia
| | - A Schiavinato
- Fidia Farmaceutici S.p.A, Abano Terme, Padova, 35031, Italy
| | - C Soranzo
- Fidia Farmaceutici S.p.A, Abano Terme, Padova, 35031, Italy
| | - B Grigolo
- Laboratorio RAMSES, IRCCS Istituto Ortopedico Rizzoli, Bologna, 40136, Italy
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7
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Hu H, Liu W, Sun C, Wang Q, Yang W, Zhang Z, Xia Z, Shao Z, Wang B. Endogenous Repair and Regeneration of Injured Articular Cartilage: A Challenging but Promising Therapeutic Strategy. Aging Dis 2021; 12:886-901. [PMID: 34094649 PMCID: PMC8139200 DOI: 10.14336/ad.2020.0902] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Accepted: 09/02/2020] [Indexed: 12/12/2022] Open
Abstract
Articular cartilage (AC) has a very limited intrinsic repair capacity after injury or disease. Although exogenous cell-based regenerative approaches have obtained acceptable outcomes, they are usually associated with complicated procedures, donor-site morbidities and cell differentiation during ex vivo expansion. In recent years, endogenous regenerative strategy by recruiting resident mesenchymal stem/progenitor cells (MSPCs) into the injured sites, as a promising alternative, has gained considerable attention. It takes full advantage of body's own regenerative potential to repair and regenerate injured tissue while avoiding exogenous regenerative approach-associated limitations. Like most tissues, there are also multiple stem-cell niches in AC and its surrounding tissues. These MSPCs have the potential to migrate into injured sites to produce replacement cells under appropriate stimuli. Traditional microfracture procedure employs the concept of MSPCs recruitment usually fails to regenerate normal hyaline cartilage. The reasons for this failure might be attributed to an inadequate number of recruiting cells and adverse local tissue microenvironment after cartilage injury. A strategy that effectively improves local matrix microenvironment and recruits resident MSPCs may enhance the success of endogenous AC regeneration (EACR). In this review, we focused on the reasons why AC cannot regenerate itself in spite of potential self-repair capacity and summarized the latest developments of the three key components in the field of EACR. In addition, we discussed the challenges facing in the present EACR strategy. This review will provide an increasing understanding of EACR and attract more researchers to participate in this promising research arena.
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Affiliation(s)
- Hongzhi Hu
- 1Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Weijian Liu
- 1Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Caixia Sun
- 2Department of Gynecology, General Hospital of the Yangtze River Shipping, Wuhan 430022, China
| | - Qiuyuan Wang
- 3Department of Nephrology, Xiangyang Central Hospital, Affiliated Hospital of Hubei University of Arts and Science, Xiangyang 441100, China
| | - Wenbo Yang
- 1Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - ZhiCai Zhang
- 1Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Zhidao Xia
- 4Centre for Nanohealth, ILS2, Swansea university Medical school, Swansea, SA2 8PP, UK
| | - Zengwu Shao
- 1Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Baichuan Wang
- 1Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China.,4Centre for Nanohealth, ILS2, Swansea university Medical school, Swansea, SA2 8PP, UK
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8
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Danalache M, Beutler KR, Rolauffs B, Wolfgart JM, Bonnaire FC, Fischer S, Greving I, Hofmann UK. Exploration of changes in spatial chondrocyte organisation in human osteoarthritic cartilage by means of 3D imaging. Sci Rep 2021; 11:9783. [PMID: 33963289 PMCID: PMC8105369 DOI: 10.1038/s41598-021-89582-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Accepted: 04/28/2021] [Indexed: 12/11/2022] Open
Abstract
Using two-dimensional top-down view microscopy, researchers have recently described chondrocytes as being spatially arranged in distinct patterns such as strings, double strings, and small and large clusters. Because of the seeming association of these changes with tissue degeneration, they have been proposed as an image-based biomarker for early osteoarthritis (OA) staging. The aim of our study was to investigate the spatial arrangement of chondrocytes in human articular cartilage in a 3D fashion and to evaluate the 3D changes of these patterns in the context of local tissue destruction. Decalcified femoral condyle resections from the load-bearing area were analysed in 3D for their spatial chondrocyte organisation by means of fluorescence microscopy and synchrotron-radiation micro-computed tomography (SR-µCT). In intact cartilage chondrocyte strings can be found in the superficial, transitional and deep zones. The proposed pattern changes accompanying tissue destruction could be located not just along the surface but also through all layers of cartilage. Each spatial pattern was characterised by a different cellular density (the only exception being between single and double strings with p = 0.062), with cellular density significantly increasing alongside the increase in local tissue degeneration as defined by the chondrocyte patterns. We can thus corroborate that the proposed cellular spatial changes are a three-dimensional function of local tissue degeneration, underlining their relevance as an image-based biomarker for the early diagnosis and description of OA. Clinical trial registration number: Project number of the ethics committee of the University of Tübingen:171/2014BO2.
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Affiliation(s)
- Marina Danalache
- Department of Orthopaedic Surgery, University Hospital of Tübingen, Hoppe-Seyler-Strasse 3, 72076, Tübingen, Germany
| | - Kevin Ralf Beutler
- Medical Faculty of the University of Tübingen, 72076, Tübingen, Germany. .,Department of Orthopaedic Surgery and Traumatology, Spital Thurgau AG, Spitalcampus 1, 8596, Münsterlingen, Switzerland.
| | - Bernd Rolauffs
- G.E.R.N. Tissue Replacement, Regeneration and Neogenesis, Department of Orthopedics and Trauma Surgery, Medical Center - Albert-Ludwigs-University of Freiburg, Faculty of Medicine, Albert-Ludwigs-University of Freiburg, 79108, Freiburg, Germany
| | | | - Florian Christof Bonnaire
- Department of Orthopaedic Surgery, University Hospital of Tübingen, Hoppe-Seyler-Strasse 3, 72076, Tübingen, Germany
| | - Stefan Fischer
- Department of Evolutionary Biology of Invertebrates, University of Tübingen, 72076, Tübingen, Germany.,Tübingen Structural Microscopy (TSM), Center for Applied Geoscience (ZAG), University of Tübingen, 72076, Tübingen, Germany
| | - Imke Greving
- Institute of Materials Research, Helmholtz-Zentrum Geesthacht, Geesthacht, Germany
| | - Ulf Krister Hofmann
- Department of Orthopaedic Surgery, University Hospital of Tübingen, Hoppe-Seyler-Strasse 3, 72076, Tübingen, Germany
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9
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Kadir ND, Yang Z, Hassan A, Denslin V, Lee EH. Electrospun fibers enhanced the paracrine signaling of mesenchymal stem cells for cartilage regeneration. Stem Cell Res Ther 2021; 12:100. [PMID: 33536060 PMCID: PMC7860031 DOI: 10.1186/s13287-021-02137-8] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2020] [Accepted: 01/01/2021] [Indexed: 12/25/2022] Open
Abstract
BACKGROUND Secretome profiles of mesenchymal stem cells (MSCs) are reflective of their local microenvironments. These biologically active factors exert an impact on the surrounding cells, eliciting regenerative responses that create an opportunity for exploiting MSCs towards a cell-free therapy for cartilage regeneration. The conventional method of culturing MSCs on a tissue culture plate (TCP) does not provide the physiological microenvironment for optimum secretome production. In this study, we explored the potential of electrospun fiber sheets with specific orientation in influencing the MSC secretome production and its therapeutic value in repairing cartilage. METHODS Conditioned media (CM) were generated from MSCs cultured either on TCP or electrospun fiber sheets of distinct aligned or random fiber orientation. The paracrine potential of CM in affecting chondrogenic differentiation, migration, proliferation, inflammatory modulation, and survival of MSCs and chondrocytes was assessed. The involvement of FAK and ERK mechanotransduction pathways in modulating MSC secretome were also investigated. RESULTS We showed that conditioned media of MSCs cultured on electrospun fiber sheets compared to that generated from TCP have improved secretome yield and profile, which enhanced the migration and proliferation of MSCs and chondrocytes, promoted MSC chondrogenesis, mitigated inflammation in both MSCs and chondrocytes, as well as protected chondrocytes from apoptosis. Amongst the fiber sheet-generated CM, aligned fiber-generated CM (ACM) was better at promoting cell proliferation and augmenting MSC chondrogenesis, while randomly oriented fiber-generated CM (RCM) was more efficient in mitigating the inflammation assault. FAK and ERK signalings were shown to participate in the modulation of MSC morphology and its secretome production. CONCLUSIONS This study demonstrates topographical-dependent MSC paracrine activities and the potential of employing electrospun fiber sheets to improve the MSC secretome for cartilage regeneration.
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Affiliation(s)
- Nurul Dinah Kadir
- Department of Orthopaedic Surgery, Yong Loo Lin School of Medicine, National University of Singapore, NUHS Tower Block, Level 11, 1E Kent Ridge Road, Singapore, 119288, Singapore.,Tissue Engineering Program, Life Sciences Institute, National University of Singapore, DSO (Kent Ridge) Building, #04-01, 27 Medical Drive, Singapore, 117510, Singapore
| | - Zheng Yang
- Department of Orthopaedic Surgery, Yong Loo Lin School of Medicine, National University of Singapore, NUHS Tower Block, Level 11, 1E Kent Ridge Road, Singapore, 119288, Singapore. .,Tissue Engineering Program, Life Sciences Institute, National University of Singapore, DSO (Kent Ridge) Building, #04-01, 27 Medical Drive, Singapore, 117510, Singapore.
| | - Afizah Hassan
- Department of Orthopaedic Surgery, Yong Loo Lin School of Medicine, National University of Singapore, NUHS Tower Block, Level 11, 1E Kent Ridge Road, Singapore, 119288, Singapore
| | - Vinitha Denslin
- Tissue Engineering Program, Life Sciences Institute, National University of Singapore, DSO (Kent Ridge) Building, #04-01, 27 Medical Drive, Singapore, 117510, Singapore
| | - Eng Hin Lee
- Department of Orthopaedic Surgery, Yong Loo Lin School of Medicine, National University of Singapore, NUHS Tower Block, Level 11, 1E Kent Ridge Road, Singapore, 119288, Singapore. .,Tissue Engineering Program, Life Sciences Institute, National University of Singapore, DSO (Kent Ridge) Building, #04-01, 27 Medical Drive, Singapore, 117510, Singapore.
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Tonomura H, Nagae M, Takatori R, Ishibashi H, Itsuji T, Takahashi K. The Potential Role of Hepatocyte Growth Factor in Degenerative Disorders of the Synovial Joint and Spine. Int J Mol Sci 2020; 21:ijms21228717. [PMID: 33218127 PMCID: PMC7698933 DOI: 10.3390/ijms21228717] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 10/30/2020] [Accepted: 11/16/2020] [Indexed: 02/08/2023] Open
Abstract
This paper aims to provide a comprehensive review of the changing role of hepatocyte growth factor (HGF) signaling in the healthy and diseased synovial joint and spine. HGF is a multifunctional growth factor that, like its specific receptor c-Met, is widely expressed in several bone and joint tissues. HGF has profound effects on cell survival and proliferation, matrix metabolism, inflammatory response, and neurotrophic action. HGF plays an important role in normal bone and cartilage turnover. Changes in HGF/c-Met have also been linked to pathophysiological changes in degenerative joint diseases, such as osteoarthritis (OA) and intervertebral disc degeneration (IDD). A therapeutic role of HGF has been proposed in the regeneration of osteoarticular tissues. HGF also influences bone remodeling and peripheral nerve activity. Studies aimed at elucidating the changing role of HGF/c-Met signaling in OA and IDD at different pathophysiological stages, and their specific molecular mechanisms are needed. Such studies will contribute to safe and effective HGF/c-Met signaling-based treatments for OA and IDD.
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Yang Z, Li H, Yuan Z, Fu L, Jiang S, Gao C, Wang F, Zha K, Tian G, Sun Z, Huang B, Wei F, Cao F, Sui X, Peng J, Lu S, Guo W, Liu S, Guo Q. Endogenous cell recruitment strategy for articular cartilage regeneration. Acta Biomater 2020; 114:31-52. [PMID: 32652223 DOI: 10.1016/j.actbio.2020.07.008] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Revised: 07/02/2020] [Accepted: 07/02/2020] [Indexed: 02/07/2023]
Abstract
In the absence of timely and proper treatments, injuries to articular cartilage (AC) can lead to cartilage degeneration and ultimately result in osteoarthritis. Regenerative medicine and tissue engineering techniques are emerging as promising approaches for AC regeneration and repair. Although the use of cell-seeded scaffolds prior to implantation can regenerate and repair cartilage lesions to some extent, these approaches are still restricted by limited cell sources, excessive costs, risks of disease transmission and complex manufacturing practices. Recently developed acellular scaffold approaches that rely on the recruitment of endogenous cells to the injured sites avoid these drawbacks and offer great promise for in situ AC regeneration. Multiple endogenous stem/progenitor cells (ESPCs) are found in joint-resident niches and have the capability to migrate to sites of injury to participate in AC regeneration. However, the natural recruitment of ESPCs is insufficient, and the local microenvironment is hostile after injury. Hence, an endogenous cell recruitment strategy based on the combination of chemoattractants and acellular scaffolds to effectively and specifically recruit ESPCs and improve local microenvironment may provide new insights into in situ AC regeneration. This review provides a brief overview of: (1) the status of endogenous cell recruitment strategy; (2) the subpopulations, potential migration routes (PMRs) of joint-resident ESPCs and their immunomodulatory and reparative effects; (3) chemoattractants and their potential adverse effects; (4) scaffold-based drug delivery systems (SDDSs) that are utilized for in situ AC regeneration; and (5) the challenges and future perspectives of endogenous cell recruitment strategy for AC regeneration. STATEMENT OF SIGNIFICANCE: Although the endogenous cell recruitment strategy for articular cartilage (AC) regeneration has been investigated for several decades, much work remains to be performed in this field. Future studies should have the following aims: (1) reporting the up-to-date progress in the endogenous cell recruitment strategies; (2) determining the subpopulations of ESPCs, the cellular and molecular mechanisms underlying the migration of these cells and their anti-inflammatory, immunomodulatory and reparative effects; (3) elucidating the chemoattractants that enhance ESPC recruitment and their potential adverse effects; and (4) developing advanced SDDSs for chemoattractant dispatch. Herein, we present a systematic overview of the aforementioned issues to provide a better understanding of endogenous cell recruitment strategies for AC regeneration and repair.
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Haque N, Abdullah BJJ, Kasim NHA. Secretome: Pharmaceuticals for Cell-Free Regenerative Therapy. STEM CELL DRUGS - A NEW GENERATION OF BIOPHARMACEUTICALS 2018. [DOI: 10.1007/978-3-319-99328-7_2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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13
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Poonpet T, Saetan N, Tanavalee A, Wilairatana V, Yuktanandana P, Honsawek S. Association between leukocyte telomere length and angiogenic cytokines in knee osteoarthritis. Int J Rheum Dis 2017; 21:118-125. [DOI: 10.1111/1756-185x.12988] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Thitiya Poonpet
- Department of Biochemistry; Faculty of Medicine; Chulalongkorn University; Bangkok Thailand
| | - Natthaphon Saetan
- Department of Biochemistry; Faculty of Medicine; Chulalongkorn University; Bangkok Thailand
| | - Aree Tanavalee
- Department of Orthopaedics; Faculty of Medicine; Vinai Parkpian Orthopaedic Research Center; King Chulalongkorn Memorial Hospital; Thai Red Cross Society; Chulalongkorn University; Bangkok Thailand
| | - Vajara Wilairatana
- Department of Orthopaedics; Faculty of Medicine; Vinai Parkpian Orthopaedic Research Center; King Chulalongkorn Memorial Hospital; Thai Red Cross Society; Chulalongkorn University; Bangkok Thailand
| | - Pongsak Yuktanandana
- Department of Orthopaedics; Faculty of Medicine; Vinai Parkpian Orthopaedic Research Center; King Chulalongkorn Memorial Hospital; Thai Red Cross Society; Chulalongkorn University; Bangkok Thailand
| | - Sittisak Honsawek
- Department of Biochemistry; Faculty of Medicine; Chulalongkorn University; Bangkok Thailand
- Department of Orthopaedics; Faculty of Medicine; Vinai Parkpian Orthopaedic Research Center; King Chulalongkorn Memorial Hospital; Thai Red Cross Society; Chulalongkorn University; Bangkok Thailand
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Ishibashi H, Tonomura H, Ikeda T, Nagae M, Sakata M, Fujiwara H, Tanida T, Mastuda KI, Kawata M, Kubo T. Hepatocyte growth factor/c-met promotes proliferation, suppresses apoptosis, and improves matrix metabolism in rabbit nucleus pulposus cells in vitro. J Orthop Res 2016; 34:709-16. [PMID: 26440443 DOI: 10.1002/jor.23063] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/03/2015] [Accepted: 09/30/2015] [Indexed: 02/04/2023]
Abstract
The etiology of intervertebral disc (IVD) degeneration is closely related to apoptosis and extracellular matrix degradation in nucleus pulposus (NP) cells. These defects in NP cells are induced by excessive external stressors such as reactive oxygen species (ROS) and inflammatory cytokines. Recently, hepatocyte growth factor (HGF) has been shown to repair damage in various diseases through anti-apoptotic and anti-inflammatory activity. In this study, we investigated the effects of HGF on NP cell abnormality caused by ROS and inflammatory cytokines by using primary NP cells isolated from rabbit IVD. HGF significantly enhanced the proliferation of NP cells. Apoptosis of NP cells induced by H2 O2 or TNF-α was significantly inhibited by HGF. Induction of mRNA expression of the inflammation mediators cyclooxygenase-2 and matrix metalloproteinase-3 and -9 by TNF-α was significantly suppressed by HGF treatment. Expression of c-Met, a specific receptor for HGF, was confirmed in NP cells and was increased by TNF-α, suggesting that inflammatory cytokines increase sensitivity to HGF. These findings demonstrate that activation of HGF/c-Met signaling suppresses damage caused by ROS and inflammation in NP cells through multiple pathways. We further suggest the clinical potential of HGF for counteracting IVD degradation involved in NP cell abnormalities.
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Affiliation(s)
- Hidenobu Ishibashi
- Department of Orthopaedics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, 465 Kajii-cho, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto, Japan
| | - Hitoshi Tonomura
- Department of Orthopaedics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, 465 Kajii-cho, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto, Japan
| | - Takumi Ikeda
- Department of Rehabilitation Medicine, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, 602-8566, Japan
| | - Masateru Nagae
- Department of Orthopaedics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, 465 Kajii-cho, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto, Japan
| | - Munehiro Sakata
- Department of Orthopaedics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, 465 Kajii-cho, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto, Japan
| | - Hiroyoshi Fujiwara
- Department of Orthopaedics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, 465 Kajii-cho, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto, Japan
| | - Takashi Tanida
- Department of Anatomy and Neurobiology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, 602-8566, Japan
| | - Ken-Ichi Mastuda
- Department of Anatomy and Neurobiology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, 602-8566, Japan
| | - Mitsuhiro Kawata
- Department of Anatomy and Neurobiology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, 602-8566, Japan
| | - Toshikazu Kubo
- Department of Orthopaedics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, 465 Kajii-cho, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto, Japan
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Stoddart MJ, Bara J, Alini M. Cells and secretome--towards endogenous cell re-activation for cartilage repair. Adv Drug Deliv Rev 2015; 84:135-45. [PMID: 25174306 DOI: 10.1016/j.addr.2014.08.007] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2014] [Revised: 06/26/2014] [Accepted: 08/20/2014] [Indexed: 01/01/2023]
Abstract
Regenerative medicine approaches to cartilage tissue repair have mainly been concerned with the implantation of a scaffold material containing monolayer expanded cells into the defect, with the aim to differentiate the cells into chondrocytes. While this may be a valid approach, the secretome of the implanted cells and its effects on the endogenous resident cells, is gaining in interest. This review aims to summarize the knowledge on the secretome of mesenchymal stem cells, including knowledge from other tissues, in order to indicate how these mechanisms may be of value in repairing articular cartilage defects. Potential therapies and their effects on the repair of articular cartilage defects will be discussed, with a focus on the transition from classical cell therapy to the implantation of cell free matrices releasing specific cytokines.
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16
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Mungunsukh O, McCart EA, Day RM. Hepatocyte Growth Factor Isoforms in Tissue Repair, Cancer, and Fibrotic Remodeling. Biomedicines 2014; 2:301-326. [PMID: 28548073 PMCID: PMC5344272 DOI: 10.3390/biomedicines2040301] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2014] [Revised: 10/21/2014] [Accepted: 10/27/2014] [Indexed: 01/18/2023] Open
Abstract
Hepatocyte growth factor (HGF), also known as scatter factor (SF), is a pleotropic factor required for normal organ development during embryogenesis. In the adult, basal expression of HGF maintains tissue homeostasis and is up-regulated in response to tissue injury. HGF expression is necessary for the proliferation, migration, and survival of epithelial and endothelial cells involved in tissue repair in a variety of organs, including heart, lung, kidney, liver, brain, and skin. The administration of full length HGF, either as a protein or using exogenous expression methodologies, increases tissue repair in animal models of tissue injury and increases angiogenesis. Full length HGF is comprised of an N-terminal hairpin turn, four kringle domains, and a serine protease-like domain. Several naturally occurring alternatively spliced isoforms of HGF were also identified. The NK1 variant contains the N-terminal hairpin and the first kringle domain, and the NK2 variant extends through the second kringle domain. These alternatively spliced forms of HGF activate the same receptor, MET, but they differ from the full length protein in their cellular activities and their biological functions. Here, we review the species-specific expression of the HGF isoforms, their regulation, the signal transduction pathways they activate, and their biological activities.
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Affiliation(s)
- Ognoon Mungunsukh
- Department of Pharmacology, Uniformed Services University of the Health Sciences, Bethesda, MD 20814-4799, USA.
| | - Elizabeth A McCart
- Department of Pharmacology, Uniformed Services University of the Health Sciences, Bethesda, MD 20814-4799, USA.
| | - Regina M Day
- Department of Pharmacology, Uniformed Services University of the Health Sciences, Bethesda, MD 20814-4799, USA.
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Abstract
The islets of Langerhans is the endocrine function region of pancreas, which exist in five cell types. The majority of endocrine cells are insulin-secreting β cells, mixed up with glucagon-secreting α-cells. The islets of Langerhans are highly vascularized, and the capillary network around the islet is about five times denser than that in the exocrine tissues. It guarantees endocrine cells adequately contact with the capillary networks. Above mentioned is the basis of deep study the interaction between β cells and capillary. Increasing number of studies contribute to the consensus that endothelial cells have positive effects in the islet microenvironment. Endothelial cells can act as endocrine cells which release many active substances, such as hepatocyte growth factors (HGF), thrombospondin-1(TSP-1), laminins, and collagens by means of different molecule pathways, inducing β cells differentiation, proliferation, survivor, and insulin release next to the vessels. Apart from the effect of endothelial cells on β cells by paracrine fashion, the islets can utilize VEGF-A, angiopoietin-1 and insulin signaling to increase the interaction with endothelial cells. As the endocrine role of endothelial cells to β cells, it may be a novel target to stimulate β cells regeneration, promote vascularization post islet transplantation strategy in the treatment of diabetes mellitus.
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Affiliation(s)
- Zilong Cao
- School of Medicine, Shandong University, Shandong 250012, P.R.China
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Skagen PS, Kruse HA, Horn T. Repair Mechanisms in Articular Cartilage—A Porcine in Vitro Study. ACTA ACUST UNITED AC 2014. [DOI: 10.4236/mr.2014.24009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Maumus M, Manferdini C, Toupet K, Peyrafitte JA, Ferreira R, Facchini A, Gabusi E, Bourin P, Jorgensen C, Lisignoli G, Noël D. Adipose mesenchymal stem cells protect chondrocytes from degeneration associated with osteoarthritis. Stem Cell Res 2013; 11:834-44. [PMID: 23811540 DOI: 10.1016/j.scr.2013.05.008] [Citation(s) in RCA: 119] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/05/2012] [Revised: 04/05/2013] [Accepted: 05/19/2013] [Indexed: 12/18/2022] Open
Abstract
Our work aimed at evaluating the role of adipose stem cells (ASC) on chondrocytes from osteoarthritic (OA) patients and identifying the mediators involved. We used primary chondrocytes, ASCs from different sources and bone marrow mesenchymal stromal cells (MSC) from OA donors. ASCs or MSCs were co-cultured with chondrocytes in a minimal medium and using cell culture inserts. Under these conditions, ASCs did not affect the proliferation of chondrocytes but significantly decreased camptothecin-induced apoptosis. Both MSCs and ASCs from different sources allowed chondrocytes in the cocultures maintaining a stable expression of markers specific for a mature phenotype, while expression of hypertrophic and fibrotic markers was decreased. A number of factors known to regulate the chondrocyte phenotype (IL-1β, IL-1RA, TNF-α) and matrix remodeling (TIMP-1 and -2, MMP-1 and -9, TSP-1) were not affected. However, a significant decrease of TGF-β1 secretion by chondrocytes and induction of HGF secretion by ASCs was observed. Addition of a neutralizing anti-HGF antibody reversed the anti-fibrotic effect of ASCs whereas hypertrophic markers were not modulated. In summary, ASCs are an interesting source of stem cells for efficiently reducing hypertrophy and dedifferentiation of chondrocytes, at least partly via the secretion of HGF. This supports the interest of using these cells in therapies for osteo-articular diseases.
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Affiliation(s)
- Marie Maumus
- Inserm, U 844, Hôpital Saint-Eloi, Montpellier F-34295, France
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Ishikawa D, Takeuchi S, Nakagawa T, Sano T, Nakade J, Nanjo S, Yamada T, Ebi H, Zhao L, Yasumoto K, Nakamura T, Matsumoto K, Kagamu H, Yoshizawa H, Yano S. mTOR inhibitors control the growth of EGFR mutant lung cancer even after acquiring resistance by HGF. PLoS One 2013; 8:e62104. [PMID: 23690929 PMCID: PMC3653905 DOI: 10.1371/journal.pone.0062104] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2012] [Accepted: 03/18/2013] [Indexed: 01/12/2023] Open
Abstract
Resistance to epidermal growth factor receptor tyrosine kinase inhibitors (EGFR-TKIs), gefitinib and erlotinib, is a critical problem in the treatment of EGFR mutant lung cancer. Several mechanisms, including bypass signaling by hepatocyte growth factor (HGF)-triggered Met activation, are implicated as mediators of resistance. The mammalian target of rapamycin (mTOR), is a downstream conduit of EGFR and MET signaling, and is thus considered a therapeutically attractive target in the treatment of various types of cancers. The purpose of this study was to examine whether 2 clinically approved mTOR inhibitors, temsirolimus and everolimus, overcome HGF-dependent resistance to EGFR-TKIs in EGFR mutant lung cancer cells. Both temsirolimus and everolimus inhibited the phosphorylation of p70S6K and 4E-BP1, which are downstream targets of the mTOR pathway, and reduced the viability of EGFR mutant lung cancer cells, PC-9, and HCC827, even in the presence of HGF in vitro. In a xenograft model, temsirolimus suppressed the growth of PC-9 cells overexpressing the HGF-gene; this was associated with suppression of the mTOR signaling pathway and tumor angiogenesis. In contrast, erlotinib did not suppress this signaling pathway or tumor growth. Multiple mechanisms, including the inhibition of vascular endothelial growth factor production by tumor cells and suppression of endothelial cell viability, contribute to the anti-angiogenic effect of temsirolimus. These findings indicate that mTOR inhibitors may be useful for controlling HGF-triggered EGFR-TKI resistance in EGFR mutant lung cancer, and they provide the rationale for clinical trials of mTOR inhibitors in patients stratified by EGFR mutation and HGF expression status.
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Affiliation(s)
- Daisuke Ishikawa
- Division of Medical Oncology, Cancer Research Institute, Kanazawa University, Kanazawa, Japan
- Department of Medicine (II), Niigata University Medical and Dental Hospital, Niigata City, Japan
| | - Shinji Takeuchi
- Division of Medical Oncology, Cancer Research Institute, Kanazawa University, Kanazawa, Japan
| | - Takayuki Nakagawa
- Division of Medical Oncology, Cancer Research Institute, Kanazawa University, Kanazawa, Japan
| | - Takako Sano
- Division of Medical Oncology, Cancer Research Institute, Kanazawa University, Kanazawa, Japan
| | - Junya Nakade
- Division of Medical Oncology, Cancer Research Institute, Kanazawa University, Kanazawa, Japan
| | - Shigeki Nanjo
- Division of Medical Oncology, Cancer Research Institute, Kanazawa University, Kanazawa, Japan
| | - Tadaaki Yamada
- Division of Medical Oncology, Cancer Research Institute, Kanazawa University, Kanazawa, Japan
| | - Hiromichi Ebi
- Division of Medical Oncology, Cancer Research Institute, Kanazawa University, Kanazawa, Japan
| | - Lu Zhao
- Division of Medical Oncology, Cancer Research Institute, Kanazawa University, Kanazawa, Japan
| | - Kazuo Yasumoto
- Division of Medical Oncology, Cancer Research Institute, Kanazawa University, Kanazawa, Japan
| | - Takahiro Nakamura
- Division of Tumor Dynamics and Regulation, Cancer Research Institute, Kanazawa University, Kanazawa, Japan
| | - Kunio Matsumoto
- Division of Tumor Dynamics and Regulation, Cancer Research Institute, Kanazawa University, Kanazawa, Japan
| | - Hiroshi Kagamu
- Department of Medicine (II), Niigata University Medical and Dental Hospital, Niigata City, Japan
| | - Hirohisa Yoshizawa
- Department of Medicine (II), Niigata University Medical and Dental Hospital, Niigata City, Japan
| | - Seiji Yano
- Division of Medical Oncology, Cancer Research Institute, Kanazawa University, Kanazawa, Japan
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Rey R, García-Aznar JM. A phenomenological approach to modelling collective cell movement in 2D. Biomech Model Mechanobiol 2013; 12:1089-100. [DOI: 10.1007/s10237-012-0465-9] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2012] [Accepted: 12/13/2012] [Indexed: 01/10/2023]
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van Buul GM, Villafuertes E, Bos PK, Waarsing JH, Kops N, Narcisi R, Weinans H, Verhaar JAN, Bernsen MR, van Osch GJVM. Mesenchymal stem cells secrete factors that inhibit inflammatory processes in short-term osteoarthritic synovium and cartilage explant culture. Osteoarthritis Cartilage 2012; 20:1186-96. [PMID: 22771777 DOI: 10.1016/j.joca.2012.06.003] [Citation(s) in RCA: 167] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/26/2012] [Revised: 06/02/2012] [Accepted: 06/20/2012] [Indexed: 02/02/2023]
Abstract
OBJECTIVE Mesenchymal stem cells (MSCs) are promising candidates for osteoarthritis (OA) therapies, although their mechanism of action remains unclear. MSCs have recently been discovered to secrete anti-inflammatory cytokines and growth factors. We studied the paracrine effects of MSCs on OA cartilage and synovial explants in vitro. DESIGN MSC-conditioned medium was prepared by stimulating primary human MSCs with tumour necrosis factor alpha (TNFα) and (50ng/ml each). Human synovium and cartilage explants were cultured in MSC-conditioned medium or in control medium, containing the same amount of added TNFα and IFNγ but not incubated with MSCs. Explants were analyzed for gene expression and the production of nitric oxide (NO). The presence of the inhibitor of nuclear factor kappa B alpha (IκBa) was assessed by Western blot analysis. RESULTS Synovial explants exposed to MSC-conditioned medium showed decreased gene expression of interleukin-1 beta (IL-1β), matrix metalloproteinase (MMP)1 and MMP13, while suppressor of cytokine signaling (SOCS)1 was upregulated. In cartilage, expression of IL-1 receptor antagonist (IL-1RA) was upregulated, whereas a disintegrin and metalloproteinase with thrombospondin motifs (ADAMTS)5 and collagen type II alpha 1 (COL2A1) were downregulated. MSC-conditioned medium reduced NO production in cartilage explants and the presence of IκBa was increased in synoviocytes and chondrocytes treated with MSC-conditioned medium. CONCLUSIONS In an inflammatory environment, MSCs secrete factors which cause multiple anti-inflammatory effects and influence matrix turnover in synovium and cartilage explants. Thereby, the presented data encourage further study of MSCs as a treatment for joint diseases.
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Affiliation(s)
- G M van Buul
- Department of Orthopaedics, Erasmus MC, Rotterdam, The Netherlands.
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Li PP, Madhavan R, Peng HB. Differential regulation of axonal growth and neuromuscular junction assembly by HGF/c-Met signaling. Dev Dyn 2012; 241:1562-74. [PMID: 22911543 DOI: 10.1002/dvdy.23845] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/06/2012] [Indexed: 01/19/2023] Open
Abstract
BACKGROUND During vertebrate neuromuscular junction (NMJ) development, contact between motor axons and muscle fibers is followed by pre- and post-synaptic specialization. Using Xenopus nerve-muscle cocultures, we recently showed that spinal neurons initially contacted muscle cells by means of filopodial processes, and that muscle-derived basic fibroblast growth factor induced axonal filopodia and slowed axonal advance to promote nerve-muscle interaction and NMJ establishment. In contrast, neurotrophins enhanced axonal growth but suppressed the extension of axonal filopodia and blocked NMJ formation. RESULTS Here we report that hepatocyte growth factor (HGF), which also supports motor neuron survival, was expressed by Xenopus muscle cells, and that forced expression of HGF in Xenopus spinal neurons inhibited the extension of axonal filopodia. Overexpression of the HGF-receptor c-Met in neurons also blocked the formation of axonal filopodia and furthermore sped up axonal growth, but a kinase-dead form of c-Met was unable to effect these changes. Importantly, treatment of nerve-muscle cocultures with recombinant HGF or the expression of HGF or active c-Met in neurons, or that of excess HGF in muscle, inhibited nerve-induced AChR clustering in muscle. CONCLUSIONS Our results suggest that HGF/c-Met signaling in neurons promotes axonal growth but suppresses filopodial assembly in neurons and hinders NMJ establishment.
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Affiliation(s)
- Pan P Li
- Division of Life Science, State Key Laboratory of Molecular Neuroscience, The Hong Kong University of Science and Technology, Hong Kong, China
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Nie H, Lee CH, Tan J, Lu C, Mendelson A, Chen M, Embree MC, Kong K, Shah B, Wang S, Cho S, Mao JJ. Musculoskeletal tissue engineering by endogenous stem/progenitor cells. Cell Tissue Res 2012; 347:665-76. [PMID: 22382390 DOI: 10.1007/s00441-012-1339-2] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2011] [Accepted: 01/23/2012] [Indexed: 12/13/2022]
Abstract
From its inception, tissue engineering has had three tenets: cells, biomaterial scaffolds and signaling molecules. Among the triad, cells are the center piece, because cells are the building blocks of tissues. For decades, cell therapies have focused on the procurement, manipulation and delivery of healthy cells for the treatment of diseases or trauma. Given the complexity and potential high cost of cell delivery, there is recent and surging interest to orchestrate endogenous cells for tissue regeneration. Biomaterial scaffolds are vital for many but not all, tissue-engineering applications and serve to accommodate or promote multiple cellular functions. Signaling molecules can be produced by transplanted cells or endogenous cells, or delivered specifically to regulate cell functions. This review highlights recent work in tissue engineering and cell therapies, with a focus on harnessing the capacity of endogenous cells as an alternative or adjunctive approach for tissue regeneration.
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Affiliation(s)
- Hemin Nie
- Tissue Engineering and Regenerative Medicine Laboratory, Columbia University Medical Center, 630 W. 168th Street, New York, NY 10032, USA
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Tibesku CO, Daniilidis K, Szuwart T, Jahn UR, Schlegel PM, Fuchs-Winkelmann S. Influence of hepatocyte growth factor on autologous osteochondral transplants in an animal model. Arch Orthop Trauma Surg 2011; 131:1145-51. [PMID: 21359871 DOI: 10.1007/s00402-011-1281-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/12/2010] [Indexed: 12/21/2022]
Abstract
PURPOSE Several studies have investigated the influence of different growth factors on hyaline cartilage regeneration. In a rabbit model, hepatocyte growth factor (HGF) was proven to increase the amount of hyaline-like chondrocytes in a mixed fibro-cartilaginous regenerate of small defects. The aim of the current study was to evaluate whether intra-articular administration of HGF influences the ingrowth of osteochondral grafts in a sheep model. TYPE OF STUDY Animal experiment. METHODS Both knee joints of eight sheep were opened surgically and osteochondral grafts were harvested and simultaneously transplanted to the opposite condyle of the same joint. The sheep were divided into two groups of four sheep, resulting in 16 grafts per group. In one group, HGF was administered by bilateral intra-articular injections given three times a week for 4 weeks. The control group received isotonic sodium chloride injections. The animals were killed after 3 months. RESULTS Histological evaluation showed a complete ingrowth of the osseous part of the osteochondral grafts. A healing or ingrowth at the level of the cartilage could not be observed. Histological evaluation of the transplanted grafts according to the modified Mankin score revealed less degeneration in the cartilage of the HGF group, as compared to the control group. In the HGF group, less cloning of chondrocytes and less irregularities of the articular surface were observed. Importantly, no deleterious effects, such as osteophyte formation, cartilage thickening or synovial proliferation, were found. CONCLUSION HGF positively influenced the cellularity of the transplanted osteochondral graft, but could not diminish the fissures in the marginal zone of the grafts. CLINICAL RELEVANCE Marginal zone fissures and degeneration in the absence of HGF may undermine long-term results of autologous osteochondral grafts.
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Abstract
Cell migration is essential for many physiological and pathological processes that include embryonic development, the immune response, wound healing, angiogenesis, and cancer metastasis. It is also important for emerging tissue engineering applications such as tissue reconstitution and the colonization of biomedical implants. By summarizing results from recent experimental and theoretical studies, this review outlines the role played by growth factors or substrate-adhesion molecules in modulating cell motility and shows that cell motility can be an important factor in determining the rates of tissue formation. The application of cell motility assays and the use of theoretical models for analyzing cell migration and proliferation are also discussed.
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Affiliation(s)
- K Zygourakis
- Department of Chemical Engineering and Institute of Biosciences and Bioengineering, Rice University, Houston, Texas 77251-1892
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The immunolocalization and possible role of c-Met (MET, hepatic growth factor receptor) in the developing human fetal mandibular condyle. Acta Histochem 2010; 112:482-8. [PMID: 19539981 DOI: 10.1016/j.acthis.2009.05.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2009] [Revised: 04/16/2009] [Accepted: 05/01/2009] [Indexed: 01/29/2023]
Abstract
The c-Met system is involved in skeletogenesis and is expressed in the cartilage of growth plates. However, the localization and role of c-Met during endochondral ossification of developing mandibular condyles or during intramembranous ossification has not yet been elucidated. In this study, c-Met was examined immunohistochemically in the mandibles of human fetuses during weeks 9 and 16 of pregnancy. c-Met was immunolocalised in the whole area of the developing mandible, although to different extents. In the intramembranous bone, mesenchymal cells showed a weak immunopositivity. Osteoprogenitor cells demonstrated a moderate immunopositivity for c-Met, while osteoblasts and osteocytes showed a very strong immunolabelling of c-Met. In the developing mandibular condyles, c-Met immunopositivity increased gradually throughout the proliferative layer towards the pre-hypertrophic cell layer, whereas the cells of the hypertrophic layer were weakly immunopositive. These findings have demonstrated, for the first time, the prominent immunolocalization of c-Met in osteogenic and chondrogenic tissues of developing human mandibles, which indicates possible functions for this receptor during mandibular development.
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Siegel AL, Atchison K, Fisher KE, Davis GE, Cornelison DDW. 3D timelapse analysis of muscle satellite cell motility. Stem Cells 2010; 27:2527-38. [PMID: 19609936 PMCID: PMC2798070 DOI: 10.1002/stem.178] [Citation(s) in RCA: 126] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Skeletal muscle repair and regeneration requires the activity of satellite cells, a population of myogenic stem cells scattered throughout the tissue and activated to proliferate and differentiate in response to myotrauma or disease. While it seems likely that satellite cells would need to navigate local muscle tissue to reach damaged areas, relatively little data on such motility exist, and most studies have been with immortalized cell lines. We find that primary satellite cells are significantly more motile than myoblast cell lines, and that adhesion to laminin promotes primary cell motility more than fourfold over other substrates. Using timelapse videomicroscopy to assess satellite cell motility on single living myofibers, we have identified a requirement for the laminin-binding integrin α7β1 in satellite cell motility, as well as a role for hepatocyte growth factor in promoting directional persistence. The extensive migratory behavior of satellite cells resident on muscle fibers suggests caution when determining, based on fixed specimens, whether adjacent cells are daughters from the same mother cell. We also observed more persistent long-term contact between individual satellite cells than has been previously supposed, potential cell-cell attractive and repulsive interactions, and migration between host myofibers. Based on such activity, we assayed for expression of “pathfinding” cues, and found that satellite cells express multiple guidance ligands and receptors. Together, these data suggest that satellite cell migration in vivo may be more extensive than currently thought, and could be regulated by combinations of signals, including adhesive haptotaxis, soluble factors, and guidance cues. Stem Cells2009;27:2527–2538
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Affiliation(s)
- Ashley L Siegel
- Division of Biology,University of Missouri, Columbia, Missouri, USA
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Nakase J, Kitaoka K, Matsumoto K, Tomita K. Facilitated tendon-bone healing by local delivery of recombinant hepatocyte growth factor in rabbits. Arthroscopy 2010; 26:84-90. [PMID: 20117631 DOI: 10.1016/j.arthro.2009.06.029] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/08/2009] [Revised: 04/12/2009] [Accepted: 06/27/2009] [Indexed: 02/02/2023]
Abstract
PURPOSE This study was performed to evaluate the therapeutic effect of hepatocyte growth factor (HGF) on tendon-bone healing in a rabbit model. METHODS In adult rabbits the long digital extensor tendon was detached from the lateral femoral condyle, and the free end of the tendon was inserted into a tunnel drilled into the proximal tibial metaphysis. Cancellous bone obtained during drilling of the tibial hole was soaked in saline solution or solution containing 100-microg/mL human recombinant HGF and then transplanted into the bone tunnel. Junctional healing between the tendon and the bone was evaluated by histologic analysis and uniaxial load-to-failure testing at 2, 4, 6, 8, and 12 weeks after surgery. RESULTS In the saline solution-treated control group, Sharpey-like fibers, which connected the tendon graft and the bone tissue, appeared 6 weeks after treatment. At 8 weeks after treatment, maturation of lamellar bone was seen, and at 12 weeks, the adhesion between tendon and bone appeared to be supported by indirect insertion of fibrocartilaginous tissue, wherein the border between the fibrocartilaginous tissue and tendon or bone was significant. In the HGF-treated group, the fibrous tissues were parallel to the load axis, and lamellar bone and Sharpey-like fibers appeared as early as 4 weeks after treatment. At 12 weeks, junctional tissue, characterized by a continuous 4-layer structure of bone, calcified cartilage, fibrocartilage, and tendon, was regenerated by a direct insertion. On biomechanical testing, the HGF-treated group had significantly better biomechanical properties than the control group at 2 and 4 weeks. The histologic improvement caused by HGF treatment was associated with the biomechanical improvement. CONCLUSIONS Local administration of recombinant HGF promotes the adhesive healing process at the tendon-bone junction, both histologically and mechanically, after ligament reconstruction in a rabbit model. CLINICAL RELEVANCE Application of HGF may be considered as a new therapeutic approach to accelerate healing and rehabilitation after ligament reconstruction.
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Affiliation(s)
- Junsuke Nakase
- Department of Orthopaedic Surgery, School of Medicine, Kanazawa University, Kanazawa, Japan.
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Abstract
Cartilage repair is a very successful pioneering area of regenerative medicine in which techniques of in situ regeneration and cell and tissue transplantation dominate over cell-free approaches to generate durable neocartilage. This review concentrates on advantages and limitations of mesenchymal stem cell (MSC)-based cartilage repair strategies induced by marrow stimulation. Detailed knowledge on the biology of MSC will be discussed in light of the requirements for MSC recruitment, retention, proliferation and chondrogenic differentiation. An improved microenvironment with timely correlated signals from biomaterials, growth factors, proteases, adjacent cartilage and subchondral bone may be key to a third generation of techniques to regenerate hyaline cartilage.
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Affiliation(s)
- W Richter
- Department of Experimental Orthopaedics, Orthopaedic University Hospital, Heidelberg, Germany.
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32
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Williams JA, Kondo N, Okabe T, Takeshita N, Pilchak DM, Koyama E, Ochiai T, Jensen D, Chu ML, Kane MA, Napoli JL, Enomoto-Iwamoto M, Ghyselinck N, Chambon P, Pacifici M, Iwamoto M. Retinoic acid receptors are required for skeletal growth, matrix homeostasis and growth plate function in postnatal mouse. Dev Biol 2009; 328:315-27. [PMID: 19389355 DOI: 10.1016/j.ydbio.2009.01.031] [Citation(s) in RCA: 71] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2008] [Revised: 01/20/2009] [Accepted: 01/23/2009] [Indexed: 12/21/2022]
Abstract
The retinoic acid receptors alpha, beta and gamma (RARalpha, RARbeta and RARgamma) are nuclear hormone receptors that regulate fundamental processes during embryogenesis, but their roles in skeletal development and growth remain unclear. To study skeletal-specific RAR function, we created conditional mouse mutants deficient in RAR expression in cartilage. We find that mice deficient in RARalpha and RARgamma (or RARbeta and RARgamma) exhibit severe growth retardation obvious by about 3 weeks postnatally. Their growth plates are defective and, importantly, display a major drop in aggrecan expression and content. Mice deficient in RARalpha and RARbeta, however, are virtually normal, suggesting that RARgamma is essential. In good correlation, we find that RARgamma is the most strongly expressed RAR in mouse growth plate and its expression characterizes the proliferative and pre-hypertrophic zones where aggrecan is strongly expressed also. By being avascular, those zones lack endogenous retinoids as indicated by previous RARE reporter mice and our direct biochemical measurements and thus, RARgamma is likely to exert ligand-less repressor function. Indeed, our data indicate that: aggrecan production is enhanced by RARgamma over-expression in chondrocytes under retinoid-free culture conditions; production is further boosted by co-repressor Zac1 or pharmacologic agents that enhance RAR repressor function; and RAR/Zac1 function on aggrecan expression may involve Sox proteins. In sum, our data reveal that RARs, and RARgamma in particular, exert previously unappreciated roles in growth plate function and skeletal growth and regulate aggrecan expression and content. Since aggrecan is critical for growth plate function, its deficiency in RAR-mutant mice is likely to have contributed directly to their growth retardation.
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Affiliation(s)
- Julie A Williams
- Department of Orthopaedic Surgery, Thomas Jefferson University College of Medicine, Philadelphia, PA 19107, USA
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Abstract
Migration of chondrocytes and mesenchymal stem cells (MSCs) may be important in cartilage development, tissue response to injury, and in tissue engineering. This study analyzed growth factors and cytokines for their ability to induce migration of human articular chondrocytes and bone marrow-derived mesenchymal stem cells in Boyden chamber assays. In human articular chondrocytes serum induced dose- and time-dependent increases in cell migration. Among a series of growth factors and cytokines tested only PDGF induced a significant increase in cell migration. The PDGF isoforms AB and BB were more potent than AA. There was an aging-related decline in the ability of chondrocytes to migrate in response to serum and PDGF. Human bone marrow MSC showed significant chemotaxis responses to several factors, including FBS, PDGF, VEGF, IGF-1, IL-8, BMP-4, and BMP-7. In summary, these results demonstrate that directed cell migration is inducible in human articular chondrocytes and MSC. PDGF is the most potent factor analyzed, and may be useful to promote tissue integration during cartilage repair or tissue engineering.
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Affiliation(s)
- Yasunori Mishima
- Division of Arthritis Research, The Scripps Research Institute, La Jolla, CA 92037, USA
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Abstract
GOALS To review the literature on chondrocyte movements and to develop plausible hypothesis for further work. DESIGN Chondrocyte movements are herein defined as translocations of the cell body. A brief overview of cell migration in other cell types is presented to set the stage for a discussion of chondrocyte moves; this includes a discussion of the challenges that cells find when moving within tissues. Reports of isolated chondrocyte migration in vitro (isolated cell systems) and ex vivo (cartilage organ cultures) are then summarized, followed by a discussion of recent studies that infer chondrocyte movements in vivo. RESULTS Investigators from different laboratories have observed chondrocyte motility in vitro. I became interested in the question of whether articular chondrocytes retained their phenotype during their migratory excursions. We devised a simple method to separate migratory and stationary chondrocytes and then showed that migratory chondrocytes synthesized collagen II but not I--consistent with a differentiated phenotype. Our time-lapse video microscopy studies showed that the cells displayed appropriate movement kinetics, albeit with low speed and directionality. Similarly, others have presented data consistent with slow movement of chondrocytes out of cartilage explants. It is important to decipher whether these in vitro movements reflect physiological states and if so, which events are simulated. Examples of in vivo studies that have inferred chondrocyte movements include those describing rotational or gliding movements of chondrocytes in the proliferative zone of the growth plate and its importance in the growth process; and the notion that chondrocytes move from the cartilage endplates to the nucleus pulposus (NP) in the spine of rabbits and rats during development. Such studies are consistent with the hypothesis that chondrocytes exhibit highly controlled and specialized movements during tissue growth and remodeling in vivo. On the other hand, the cartilage explant studies elicit interest in the possibility that matrix injuries resulting in disruption of the collagen network of adult cartilages provide a permissive environment for chondrocyte motility. CONCLUSIONS The case for in vivo chondrocyte motility remains to be proven. However, the in vitro and in vivo data on chondrocyte movements present an argument for further thought and studies in this area.
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Affiliation(s)
- T I Morales
- Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114, USA.
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35
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Dankbar B, Neugebauer K, Wunrau C, Tibesku CO, Skwara A, Pap T, Fuchs-Winkelmann S. Hepatocyte growth factor induction of macrophage chemoattractant protein-1 and osteophyte-inducing factors in osteoarthritis. J Orthop Res 2007; 25:569-77. [PMID: 17262819 DOI: 10.1002/jor.20338] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
In osteoarthritis (OA), hepatocyte growth factor (HGF) is supposed to play a role in cartilage repair. Because the development of osteophytes is a major characteristic of OA and thought to be part of an attempted repair process, the purpose of this study was to determine whether HGF may be involved in osteophyte formation. HGF levels in synovial fluids from 41 patients assessed by enzyme immunosorbant assay were correlated with disease severity and osteophyte formation, evaluated by anteroposterior weight-bearing radiographs. Detection of HGF, c-Met, and CD68 in cartilage and synovial tissues was assessed by immunohistochemistry. Effects of HGF on the secretion of TGF-beta1 and BMP-2 by chondrocytes, fibroblast-like synovial cells (FLS), and macrophages as well as HGF-induced secretion of MCP-1 by FLS and chondrocytes were determined by ELISA. HGF was detected in all synovial fluids and concentrations correlated highly with disease severity and osteophyte formation (p < 0.001). Immunohistochemistry revealed weak synovial staining for HGF, whereas increasing numbers of HGF expressing chondrocytes were detected depending on disease severity. In addition, an increased number of macrophages in synovial specimens was observed, which was likewise severity dependent. In a series of subsequent in vitro studies, HGF remarkable induced MCP-1 secretion by FLS in a dose-dependent manner. No effect on TGF-beta1 and BMP-2 secretion by FLS and chondrocytes was evident upon HGF stimulation, whereas secretion of these growth factors by PMA-differentiated THP-1 cells was significantly increased by HGF. The results indicate that HGF may facilitate osteophyte development by promoting MCP-1-mediated entry of monocytes/macrophages into the OA-affected joint and/or by stimulating macrophage-derived growth factors.
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Affiliation(s)
- Berno Dankbar
- Department of Orthopaedics, University Hospital of Muenster, Domagkstrasse 3, D-48149 Muenster, Germany.
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Bhargava MM, Hidaka C, Hannafin JA, Doty S, Warren RF. Effects of hepatocyte growth factor and platelet-derived growth factor on the repair of meniscal defects in vitro. In Vitro Cell Dev Biol Anim 2006; 41:305-10. [PMID: 16409118 DOI: 10.1290/0503018.1] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Injuries to the avascular region of the meniscus occur frequently and may be difficult to repair. This study was designed to determine whether growth factors could diffuse from a collagen sponge or a collagen gel into meniscal tissue and stimulate healing of defects using an in vitro model. The diffusion of platelet-derived growth factor (PDGF) from the collagen carriers into the medium was rapid with approximately 50% being released from the collagen sponge within the first hour. After 5 d of incubation, 8% of the PDGF was present in the meniscus, 11% in the collagen sponge, and 62% had been released into the medium. Similar results were obtained when a collagen gel was used as a carrier. Histological evaluation of the meniscal explants after 2 wk in culture revealed extensive proteoglycan staining in the areas surrounding defects treated with either hepatocyte growth factor (HGF) or PDGF compared with controls without growth factor. The HGF-PDGF treatment resulted in alignment and migration of meniscal cells toward the defect, which was not observed in untreated controls. At 3-7 d, increased number of cells were observed in defects treated with collagen gels (but not the sponge) with PDGF-HGF. At 4 wk, combined HGF-PDGF treatment resulted in the formation of tissue with birefringence by polarized microscopy, suggestive of organized collagen. The data suggest that use of specific PDGF-HGF may enhance the repair of meniscal injuries.
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Affiliation(s)
- Madhu M Bhargava
- Laboratory for Soft Tissue Research, Hospital for Special Surgery, 535 East 70th Street, New York, New York 10021, USA.
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Cong R, Jiang X, Wilson CM, Hunter MP, Vasavada H, Bogue CW. Hhex is a direct repressor of endothelial cell-specific molecule 1 (ESM-1). Biochem Biophys Res Commun 2006; 346:535-45. [PMID: 16764824 DOI: 10.1016/j.bbrc.2006.05.153] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2006] [Accepted: 05/23/2006] [Indexed: 12/26/2022]
Abstract
Hhex encodes a homeodomain-containing protein that functions as both a transcriptional repressor and activator, and is necessary for normal embryonic development. We previously reported that a null mutation of Hhex leads to abnormalities in vasculogenesis and have focused on identifying the transcriptional targets of Hhex necessary for vascular development. Here we report that the expression of ESM-1, a cysteine-rich protein expressed in the endothelium, is increased in Hhex(-/-) embryos. Overexpression of Hhex in endothelial cells down-regulates ESM-1. The results from transient cotransfection assay, electrophoretic-mobility shift assay, site-directed mutagenesis, and chromatin immunoprecipitation assay demonstrate that Hhex can directly bind to and repress ESM-1 via an evolutionarily conserved Hhex response element (HRE) 1. These findings indicate that ESM-1 is a direct target of Hhex and that Hhex functions as a transcriptional repressor of ESM-1. We speculate that Hhex-mediated repression of ESM-1 is critical for the normal function of the vascular endothelium and for tumor vasculogenesis.
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Affiliation(s)
- Rong Cong
- The Department of Pediatrics, Yale University School of Medicine, New Haven, CT 06520, USA
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Kusano S, Igarashi N, Sakai S, Toida T. Effect of Orally Administered Chondrosine on Uptake of <sup>35</sup>S Sulfate into Mice Cartilage. YAKUGAKU ZASSHI 2006; 126:297-300. [PMID: 16596020 DOI: 10.1248/yakushi.126.297] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Chondroitin sulfate is widely distributed in animal tissues and possibly plays an important role in different types of metabolic reactions as well as protecting joints, the internal wall of blood vessels, skin, bone, etc. In cartilage, glycosaminoglycans have a protective function; in particular, chondroitin sulfate stabilizes fibrous and cellular elements of the connective tissue and, at the same time, lubricates and protects the membranes in joints. Recently, chondroitin sulfate has been used as a nutraceutical for the treatment of joint diseases such as osteoarthritis, although acidic and large molecules such as chondroitin sulfate might not be able to be absorbed through digestive apparatus such as the intestine. In this study, we investigated the effects of orally administered chondrosine derived from shark chondroitin sulfate on the uptake of inorganic (35)S sulfate into rat cartilage and found that chondrosine stimulates the incorporation of (35)S sulfate into cartilage compared with intact chondroitin sulfate.
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Lee WJ, Wu LF, Chen WK, Wang CJ, Tseng TH. Inhibitory effect of luteolin on hepatocyte growth factor/scatter factor-induced HepG2 cell invasion involving both MAPK/ERKs and PI3K–Akt pathways. Chem Biol Interact 2006; 160:123-33. [PMID: 16458870 DOI: 10.1016/j.cbi.2006.01.002] [Citation(s) in RCA: 82] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2005] [Revised: 12/23/2005] [Accepted: 01/05/2006] [Indexed: 12/22/2022]
Abstract
Hepatocyte growth factor (HGF), also known as scatter factor (SF), and its receptor, the c-Met tyrosine kinase, play roles in cancer invasion and metastasis in a wide variety of tumor cells. Clinical observations suggest that HGF can promote metastasis of hepatoma cells while stimulating tumor invasiveness. We use HGF as an invasive inducer of human hepatoma HepG2 cells to investigate the effect of flavonoids on anti-invasion. In our preliminary study, we investigated the effect of flavonoids including luteolin, quercetin, baicalein, genistein, taxifolin and catechin on HGF-mediated migration and invasion of HepG2 cells. We found that luteolin presented the most potent potential on anti-migration and anti-invasion by Boyden chamber assay. Furthermore, luteolin inhibited HGF-induced cell scattering and cytoskeleton change such as filopodia and lamellipodia was determined by both phase-contrast and fluorescence microscopy studies. In addition, Western blotting and immunoprecipitation were performed to confirm luteolin suppressed the phosphorylation of c-Met, the membrane receptor of HGF, as well as ERK1/2 and Akt, but not JNK1/2, which is activated by HGF. Our investigation demonstrated that luteolin similar to PD98059, which acts as a specific inhibitor of MEK, an up stream kinase regulating ERK1/2, and wortmannin, a PI3K inhibitor, inhibited the invasiveness induced by HGF. In conclusion, the luteolin inhibited HGF-induced HepG2 cell invasion involving both MAPK/ERKs and PI3K-Akt pathways.
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Affiliation(s)
- Wei-Jiunn Lee
- Institute of Biochemistry and Biotechnology, Chung Shan Medical University, No. 110, Section 1, Chien-Kuo N. Road, Taichung 402, Taiwan
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Thompson J, Dolcet X, Hilton M, Tolcos M, Davies AM. HGF promotes survival and growth of maturing sympathetic neurons by PI-3 kinase- and MAP kinase-dependent mechanisms. Mol Cell Neurosci 2004; 27:441-52. [PMID: 15555922 DOI: 10.1016/j.mcn.2004.07.007] [Citation(s) in RCA: 54] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2004] [Revised: 07/26/2004] [Accepted: 07/27/2004] [Indexed: 11/16/2022] Open
Abstract
Hepatocyte growth factor (HGF) is a pleiotrophic factor whose many functions include promoting neuronal survival and growth. Hitherto, these effects have been observed in the presence of other neurotrophic factors like NGF and CNTF, and this requirement for an accessory factor has made it difficult to elucidate the signaling pathways that mediate its survival and growth-enhancing effects. Here, we show that HGF promotes the survival of mature sympathetic neurons of the superior cervical ganglion (SCG) grown at low density in defined medium lacking other neurotrophic factors. This effect was first clearly observed in cultures established from postnatal day 20 (P20) mice and became maximal by P40. HGF also enhanced the growth of neurite arbors from neurons throughout postnatal development and in the adult. HGF treatment resulted in phosphorylation of Akt and ERK1/ERK2. Preventing Akt activation with the phosphatidylinositol-3 (PI-3) kinase inhibitor LY294002 blocked the HGF survival response, and inhibition of ERK activation with the MEK inhibitors PD98059 or U0126 reduced the HGF survival response and the neurite growth-promoting effects of HGF. These results indicate that HGF promotes the survival and growth of maturing sympathetic neurons by both PI-3 kinase- and MAP kinase-dependent mechanisms.
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Affiliation(s)
- Jane Thompson
- Department of Preclinical Veterinary Sciences, Royal (Dick) School of Veterinary Studies, University of Edinburgh, Edinburgh EH9 1QH, Scotland, United Kingdom.
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Bau B, McKenna LA, Soeder S, Fan Z, Pecht A, Aigner T. Hepatocyte growth factor/scatter factor is not a potent regulator of anabolic and catabolic gene expression in adult human articular chondrocytes. Biochem Biophys Res Commun 2004; 316:984-90. [PMID: 15044081 DOI: 10.1016/j.bbrc.2004.03.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2003] [Indexed: 11/27/2022]
Abstract
Objective. Hepatocyte growth factor (HGF) has been reported to be present in articular cartilage and to be a potentially important inducing factor of anabolic and catabolic activity in chondrocytes. The aim of this study was to determine the expression levels of full length-functional-hgf and its receptor c-met in normal and osteoarthritic cartilage and the effect of HGF on anabolic and catabolic gene expression in adult human articular chondrocytes. Methods. Isolated adult human articular chondrocytes were stimulated for 48h with HGF (1, 10, and 100ng/ml). Synthesis of proteoglycans was determined by [(35)S]sulfate incorporation. mRNA levels for anabolic and catabolic genes as well as c-met and (functional) hgf were quantified using real-time PCR. Additionally, in situ mRNA expression levels of hgf and c-met were quantitatively measured from RNA directly isolated from normal and osteoarthritic adult human articular cartilage. Results. Proteoglycan synthesis in adult human articular chondrocytes was not stimulated by HGF nor was a selection of catabolic genes (collagenases and aggrecanases). Normal adult articular chondrocytes expressed only very low levels of hgf mRNA. Slightly higher levels of hgf were detected in chondrocytes isolated from osteoarthritic cartilage. Significant c-met expression was detected in both sample types. Conclusion. Despite the expression of its receptor c-met and its presence in articular cartilage, HGF does not appear to be a potent player in cartilage matrix turnover, at least not in terms of anabolic and catabolic gene expression in normal adult articular cartilage.
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Affiliation(s)
- Brigitte Bau
- Osteoarticular and Arthritis Research, Department of Pathology, University of Erlangen-Nürnberg, Erlangen D-91054, Germany
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KOBAYASHI A, AMANO O, TANI Y, NAKAMURA T, ISEKI S, TOMITA K. Hepatocyte growth factor regulates the proliferation and differentiation of cartilage in developing forelimb of mouse embryos in vitro. Biomed Res 2004. [DOI: 10.2220/biomedres.25.219] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Kanemaru SI, Nakamura T, Omori K, Kojima H, Magrufov A, Hiratsuka Y, Hirano S, Ito J, Shimizu Y. Regeneration of the vocal fold using autologous mesenchymal stem cells. Ann Otol Rhinol Laryngol 2003; 112:915-20. [PMID: 14653358 DOI: 10.1177/000348940311201101] [Citation(s) in RCA: 130] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
The aim of this study was to regenerate the injured vocal fold by means of selective cultured autologous mesenchymal stem cells (MSCs). Eight adult beagle dogs were used for this experiment. Selective incubation of MSCs from bone marrow was done. These MSCs were submitted to 3-dimensional incubation in 1% hydrochloric acid atelocollagen. Three-dimensional incubated MSCs were injected into the left vocal fold, and atelocollagen only was injected into the right vocal fold of the same dog as a control. Four days after injection, the posterior parts of the vocal folds were incised. The regeneration of the vocal fold was estimated by morphological and histologic evaluations. Our results showed that 3-dimensional incubated MSCs were useful in the regeneration of the injured vocal fold. This study shows that damaged tissues such as an injured vocal fold would be able to be regenerated by tissue engineering.
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Affiliation(s)
- Shin-Ichi Kanemaru
- Department of Otolaryngology-Head and Neck Surgery, Kyoto University Faculty of Medicine, Kyoto, Japan
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Kim G, Okumura M, Bosnakovski D, Ishiguro T, Kadosawa T, Fujinaga T. Biological Properties of Allogenic Articular Chondrocytes on the Surface of Bovine Cartilage Explants in vitro. ACTA ACUST UNITED AC 2003; 50:418-23. [PMID: 14633221 DOI: 10.1046/j.1439-0442.2003.00570.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Bovine cartilage explants were co-cultured with or without allogenic chondrocytes for 4 weeks. The attachment of the applied chondrocytes to cartilage after labelling with fluorescence was assessed using a confocal laser microscope. Morphological changes and the production of extracellular matrix (ECM) of co-cultured chondrocytes on intact and damaged surfaces of cartilage were evaluated by histological and immunohistochemical methods. Co-cultured chondrocytes attached to and proliferated on the intact and damaged areas of cartilage, and a new layer was created there. The defects were also filled with ECM produced by the co-cultured chondrocytes. Glycosaminoglycans and collagen type II were detected in the newly formed ECM, and large numbers of rounded chondrocytes were observed at primitive lacunae in this matrix at 4 weeks of culture. The results suggest that chondrocytes have the ability to attach to, to proliferate on and to establish a new matrix on the intact and damaged surfaces of cartilage explants.
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Affiliation(s)
- G Kim
- Laboratory of Veterinary Surgery, Department of Veterinary Clinical Sciences, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo 060-0818, Japan.
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Chang C, Lauffenburger DA, Morales TI. Motile chondrocytes from newborn calf: migration properties and synthesis of collagen II. Osteoarthritis Cartilage 2003; 11:603-12. [PMID: 12880583 DOI: 10.1016/s1063-4584(03)00087-6] [Citation(s) in RCA: 64] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
OBJECTIVE To determine whether differentiated chondrocytes are motile. DESIGN Calf articular chondrocytes isolated from six animals were cultured in spinner flasks and removed on days 3 and 7. Boyden chamber assays and time-lapse videomicroscopy were performed to monitor and quantify cell migration. A novel method for selectively harvesting and metabolically labeling the migrated cells was developed, based on cell movement to the underside of the Boyden chamber membranes. The 3H-collagen synthesized by these cells was purified and analyzed by SDS-PAGE and autoradiography either before or after cyanogen bromide cleavage. RESULTS In Boyden chambers, locomotion of day 3 chondrocytes on fibronectin-coated membranes was approximately 3-fold higher than on bovine serum albumin-coated controls (39+/-15 vs 12+/-8 cells/mm(2), respectively (P=0.005)). Insulin-like growth factor-I (IGF-I, 10 ng/ml) was chemotactic, increasing motility to 87+/-16 cells/mm(-) (difference from fibronectin alone: P=0.0003). A similar response was observed for day 7 cells, but IGF-I activation was not as pronounced (P=0.055). The collagen patterns produced by the migrated cells closely resembled those of standard collagen type II, without any evidence of collagen I production. In videotracking experiments, motile cells attached on fibronectin exhibited typical lamellipodia and filopodia, and approximately 30% of attached cells were motile (speed >1 micro m/h and directional persistence >1h). Typical cell path lengths were 30-50 micro m, substantially greater than a full cell length displacement. CONCLUSION A population of well-differentiated chondrocytes capable of matrix (COL II) synthesis are motile in vitro. This original finding opens new avenues to study the potential of motile cells for cartilage repair.
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Affiliation(s)
- C Chang
- Division of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA 02114, USA.
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Guévremont M, Martel-Pelletier J, Massicotte F, Tardif G, Pelletier JP, Ranger P, Lajeunesse D, Reboul P. Human adult chondrocytes express hepatocyte growth factor (HGF) isoforms but not HgF: potential implication of osteoblasts on the presence of HGF in cartilage. J Bone Miner Res 2003; 18:1073-81. [PMID: 12817761 DOI: 10.1359/jbmr.2003.18.6.1073] [Citation(s) in RCA: 56] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
HGF is increased in human OA cartilage, possibly from Ob's. RT-PCR shows HGF isoforms are differently regulated between chondrocytes and Ob. A paracrine cross-talk between subchondral bone and cartilage may occur during OA. Recently, hepatocyte growth factor (HGF) has been identified by immunohistochemistry in cartilage and more particularly in the deep zone of human osteoarthritic (OA) cartilage. By investigating HGF expression in cartilage, we found that chondrocytes did not express HGF; however, they expressed the two truncated isoforms, namely HGF/NK1 and HGF/NK2. Because the only other cells localized near the deep zone are osteoblasts from the subchondral bone plate, we hypothesized that they were expressing HGF. Indeed, we found that HGF was synthesized by osteoblasts from the subchondral bone plate. Moreover, OA osteoblasts produced five times more HGF than normal osteoblasts and almost no HGF/NK1, unlike normal osteoblasts. Because prostaglandin E2 (PGE2) and pro-inflammatory cytokines such as interleukin (IL)-1 and IL-6 are involved in OA progression, we investigated whether these factors impact HGF produced by normal osteoblasts. PGE2 was the only factor tested that was able to stimulate HGF synthesis. However, the addition of NS398, a selective inhibitor of cyclo-oxygenase-2 (COX-2) had no effect on HGF produced by OA osteoblasts. HGF/NK2 had a moderate stimulating effect on HGF production by normal osteoblasts, whereas osteocalcin was not modulated by either HGF or HGF/NK2. When investigating signaling routes that might be implicated in OA osteoblast-produced HGF, we found that protein kinase A was at least partially involved. In summary, this study raises the hypothesis that the HGF found in articular cartilage is produced by osteoblasts, diffuses into the cartilage, and may be implicated in the OA process.
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Affiliation(s)
- Melanie Guévremont
- Osteoarthritis Research Unit, Hôpital Notre-Dame, Centre Hospitalier de Université de Montréal, Montréal, Québec, Canada
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Lamb KJ, Lewthwaite JC, Bastow ER, Pitsillides AA. Defining boundaries during joint cavity formation: going out on a limb. Int J Exp Pathol 2003; 84:55-67. [PMID: 12801279 PMCID: PMC2517544 DOI: 10.1046/j.1365-2613.2003.00338.x] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Whilst factors controlling the site at which joints form within the developing limb are recognised, the mechanisms by which articular element separation occurs during the formation of the joint cavity have not been determined. Herein, we review the relationships between early limb patterning, embryonic movement, extracellular matrix composition, local signalling events and the process of joint cavity formation. We speculate that a pivotal event in this process involves the demarcation of signalling boundaries, established by local mechano-dependent modifications in glycosaminoglycan synthesis. In our opinion, studies that examine early patterning and also focus on local developmental alterations in tissue architecture are required in order to help elucidate the fundamental principals regulating joint formation.
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Affiliation(s)
- K J Lamb
- Department of Veterinary Basic Sciences, Royal Veterinary Collage, University of London, Royal College Street, London, NW1 OTU, UK
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Kim G, Okumura M, Ishiguro T, Kadosawa T, Fujinaga T. Preventive effect of hyaluronic acid on the suppression of attachment and migration abilities of bovine chondrocytes by IL-1alpha in vitro. J Vet Med Sci 2003; 65:427-30. [PMID: 12679582 DOI: 10.1292/jvms.65.427] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Attachment and migration of bovine chondrocytes cultured in vitro were significantly suppressed by the addition of interleukin (IL)-1alpha at the concentration of 1 ng/ml or more (p<0.05). The application of hyaluronic acid (HA) at the concentration of 10 micro g/m l or more significantly recovered the attachment of chondrocytes (p<0.05) and the application of HA at 100 micro g/ml concentration recovered the migration of chondrocytes suppressed by IL-1alpha. These results suggest that the application of HA for inflammatory arthropathies or chondrocyte transplantation might be helpful to preserve the properties of chondrocytes and its extracellular matrix against inflammatory conditions.
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Affiliation(s)
- Gonhyung Kim
- Laboratory of Veterinary Surgery, Department of Veterinary Clinical Sciences, Graduate School of Veterinary Medicine, Hokkaido University, Sapporo, Japan
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D'Ippolito G, Schiller PC, Perez-stable C, Balkan W, Roos BA, Howard GA. Cooperative actions of hepatocyte growth factor and 1,25-dihydroxyvitamin D3 in osteoblastic differentiation of human vertebral bone marrow stromal cells. Bone 2002; 31:269-75. [PMID: 12151078 DOI: 10.1016/s8756-3282(02)00820-7] [Citation(s) in RCA: 58] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Bone formation and remodeling require continuous generation of osteoprogenitor cells from bone marrow stromal cells (MSC), which generate and respond to a variety of growth factors with putative roles in hematopoiesis and mesenchymal differentiation. In this study we examine the interaction of two such factors on the maturation of skeletal components. We previously reported that these factors, hepatocyte growth factor (HGF) and 1,25-dihydroxyvitamin D(3) (vitD(3)), act together to increase alkaline phosphatase in chondroblasts. We now describe the cooperative effect of these agents on MSC isolated and cultured from human vertebral bone marrow. MSC (passages 3-9) isolated from bone marrow cells of human vertebrae (T1-L5) from 22-36-year-old normal donors were first expanded in vitro and then plated in the presence or absence of 10 ng/mL HGF and/or 10 nmol/L vitD(3), for 7-18 days. HGF treatment increased cell proliferation 2.5-fold, with no effect on alkaline phosphatase activity. Whereas vitD(3) treatment inhibited cell growth by 50%, alkaline phosphatase activity was stimulated eightfold, although no mineralization was observed. HGF together with vitD(3) increased cell proliferation 1.5-fold and alkaline phosphatase activity 13-fold over untreated control. Moreover, mineralization was detected only with this combination. Our findings provide evidence that HGF in concert with vitamin D may promote growth and differentiation of human MSC into osteogenic cells.
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Affiliation(s)
- G D'Ippolito
- Geriatric Research, Education, and Clinical Center and Research Service, Veterans Affairs Medical Center, and Department of Medicine, University of Miami School of Medicine, Miami, FL 33125, USA.
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50
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Comoglio PM, Trusolino L. Series Introduction: Invasive growth: from development to metastasis. J Clin Invest 2002. [DOI: 10.1172/jci0215392] [Citation(s) in RCA: 148] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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