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Heggli I, Teixeira GQ, Iatridis JC, Neidlinger‐Wilke C, Dudli S. The role of the complement system in disc degeneration and Modic changes. JOR Spine 2024; 7:e1312. [PMID: 38312949 PMCID: PMC10835744 DOI: 10.1002/jsp2.1312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/04/2023] [Revised: 12/15/2023] [Accepted: 01/04/2024] [Indexed: 02/06/2024] Open
Abstract
Disc degeneration and vertebral endplate bone marrow lesions called Modic changes are prevalent spinal pathologies found in chronic low back pain patients. Their pathomechanisms are complex and not fully understood. Recent studies have revealed that complement system proteins and interactors are dysregulated in disc degeneration and Modic changes. The complement system is part of the innate immune system and plays a critical role in tissue homeostasis. However, its dysregulation has also been associated with various pathological conditions such as rheumatoid arthritis and osteoarthritis. Here, we review the evidence for the involvement of the complement system in intervertebral disc degeneration and Modic changes. We found that only a handful of studies reported on complement factors in Modic changes and disc degeneration. Therefore, the level of evidence for the involvement of the complement system is currently low. Nevertheless, the complement system is tightly intertwined with processes known to occur during disc degeneration and Modic changes, such as increased cell death, autoantibody production, bacterial defense processes, neutrophil activation, and osteoclast formation, indicating a contribution of the complement system to these spinal pathologies. Based on these mechanisms, we propose a model how the complement system could contribute to the vicious cycle of tissue damage and chronic inflammation in disc degeneration and Modic changes. With this review, we aim to highlight a currently understudied but potentially important inflammatory pathomechanism of disc degeneration and Modic changes that may be a novel therapeutic target.
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Affiliation(s)
- Irina Heggli
- Center of Experimental Rheumatology, Department of RheumatologyUniversity Hospital Zurich, University of ZurichZurichSwitzerland
- Department of Physical Medicine and RheumatologyBalgrist University Hospital, Balgrist Campus, University of ZurichZurichSwitzerland
- Leni and Peter W. May Department of OrthopaedicsIcahn School of Medicine at Mount SinaiNew YorkNew YorkUSA
| | - Graciosa Q. Teixeira
- Institute of Orthopedic Research and Biomechanics, Trauma Research Centre, Ulm UniversityUlmGermany
| | - James C. Iatridis
- Leni and Peter W. May Department of OrthopaedicsIcahn School of Medicine at Mount SinaiNew YorkNew YorkUSA
| | | | - Stefan Dudli
- Center of Experimental Rheumatology, Department of RheumatologyUniversity Hospital Zurich, University of ZurichZurichSwitzerland
- Department of Physical Medicine and RheumatologyBalgrist University Hospital, Balgrist Campus, University of ZurichZurichSwitzerland
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2
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Lama P, Tiwari J, Mutreja P, Chauhan S, Harding IJ, Dolan T, Adams MA, Maitre CL. Cell clusters in intervertebral disc degeneration: an attempted repair mechanism aborted via apoptosis. Anat Cell Biol 2023; 56:382-393. [PMID: 37503630 PMCID: PMC10520859 DOI: 10.5115/acb.23.067] [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: 03/08/2023] [Revised: 05/18/2023] [Accepted: 05/22/2023] [Indexed: 07/29/2023] Open
Abstract
Cell clusters are a histological hallmark feature of intervertebral disc degeneration. Clusters arise from cell proliferation, are associated with replicative senescence, and remain metabolically, but their precise role in various stages of disc degeneration remain obscure. The aim of this study was therefore to investigate small, medium, and large size cell-clusters. For this purpose, human disc samples were collected from 55 subjects, aged 37-72 years, 21 patients had disc herniation, 10 had degenerated non-herniated discs, and 9 had degenerative scoliosis with spinal curvature <45°. 15 non-degenerated control discs were from cadavers. Clusters and matrix changes were investigated with histology, immunohistochemistry, and Sodium dodecyl sulphate polyacrylamide gel electrophoresis (SDS-PAGE). Data obtained were analyzed with spearman rank correlation and ANOVA. Results revealed, small and medium-sized clusters were positive for cell proliferation markers Ki-67 and proliferating cell nuclear antigen (PCNA) in control and slightly degenerated human discs, while large cell clusters were typically more abundant in severely degenerated and herniated discs. Large clusters associated with matrix fissures, proteoglycan loss, matrix metalloproteinase-1 (MMP-1), and Caspase-3. Spatial association findings were reconfirmed with SDS-PAGE that showed presence to these target markers based on its molecular weight. Controls, slightly degenerated discs showed smaller clusters, less proteoglycan loss, MMP-1, and Caspase-3. In conclusion, cell clusters in the early stages of degeneration could be indicative of repair, however sustained loading increases large cell clusters especially around microscopic fissures that accelerates inflammatory catabolism and alters cellular metabolism, thus attempted repair process initiated by cell clusters fails and is aborted at least in part via apoptosis.
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Affiliation(s)
- Polly Lama
- Department of Anatomy, Sikkim Manipal Institute of Medical Sciences, Sikkim Manipal University, Sikkim, India
| | - Jerina Tiwari
- Department of Anatomy, Sikkim Manipal Institute of Medical Sciences, Sikkim Manipal University, Sikkim, India
| | - Pulkit Mutreja
- Department of Anatomy, Sikkim Manipal Institute of Medical Sciences, Sikkim Manipal University, Sikkim, India
| | - Sukirti Chauhan
- Department of Anatomy, Sikkim Manipal Institute of Medical Sciences, Sikkim Manipal University, Sikkim, India
| | - Ian J Harding
- Centre for Clinical Anatomy, University of Bristol, Bristol, UK
| | - Trish Dolan
- Centre for Clinical Anatomy, University of Bristol, Bristol, UK
| | - Michael A Adams
- Centre for Clinical Anatomy, University of Bristol, Bristol, UK
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3
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Franco-Trepat E, Alonso-Pérez A, Guillán-Fresco M, López-Fagúndez M, Pazos-Pérez A, Crespo-Golmar A, Belén Bravo S, López-López V, Jorge-Mora A, Cerón-Carrasco JP, Lois Iglesias A, Gómez R. β Boswellic Acid Blocks Articular Innate Immune Responses: An In Silico and In Vitro Approach to Traditional Medicine. Antioxidants (Basel) 2023; 12:371. [PMID: 36829930 PMCID: PMC9952103 DOI: 10.3390/antiox12020371] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Revised: 01/25/2023] [Accepted: 01/30/2023] [Indexed: 02/08/2023] Open
Abstract
Osteoarthritis (OA) is hallmarked as a silent progressive rheumatic disease of the whole joint. The accumulation of inflammatory and catabolic factors such as IL6, TNFα, and COX2 drives the OA pathophysiology into cartilage degradation, synovia inflammation, and bone destruction. There is no clinical available OA treatment. Although traditional ayurvedic medicine has been using Boswellia serrata extracts (BSE) as an antirheumatic treatment for a millennium, none of the BSE components have been clinically approved. Recently, β boswellic acid (BBA) has been shown to reduce in vivo OA-cartilage loss through an unknown mechanism. We used computational pharmacology, proteomics, transcriptomics, and metabolomics to present solid evidence of BBA therapeutic properties in mouse and primary human OA joint cells. Specifically, BBA binds to the innate immune receptor Toll-like Receptor 4 (TLR4) complex and inhibits both TLR4 and Interleukin 1 Receptor (IL1R) signaling in OA chondrocytes, osteoblasts, and synoviocytes. Moreover, BBA inhibition of TLR4/IL1R downregulated reactive oxygen species (ROS) synthesis and MAPK p38/NFκB, NLRP3, IFNαβ, TNF, and ECM-related pathways. Altogether, we present a solid bulk of evidence that BBA blocks OA innate immune responses and could be transferred into the clinic as an alimentary supplement or as a therapeutic tool after clinical trial evaluations.
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Affiliation(s)
- Eloi Franco-Trepat
- Musculoskeletal Pathology Group, Institute IDIS, Santiago University Clinical Hospital, 15706 Santiago de Compostela, Spain
| | - Ana Alonso-Pérez
- Musculoskeletal Pathology Group, Institute IDIS, Santiago University Clinical Hospital, 15706 Santiago de Compostela, Spain
| | - María Guillán-Fresco
- Musculoskeletal Pathology Group, Institute IDIS, Santiago University Clinical Hospital, 15706 Santiago de Compostela, Spain
| | - Miriam López-Fagúndez
- Musculoskeletal Pathology Group, Institute IDIS, Santiago University Clinical Hospital, 15706 Santiago de Compostela, Spain
| | - Andrés Pazos-Pérez
- Musculoskeletal Pathology Group, Institute IDIS, Santiago University Clinical Hospital, 15706 Santiago de Compostela, Spain
| | - Antía Crespo-Golmar
- Musculoskeletal Pathology Group, Institute IDIS, Santiago University Clinical Hospital, 15706 Santiago de Compostela, Spain
| | - Susana Belén Bravo
- Musculoskeletal Pathology Group, Institute IDIS, Santiago University Clinical Hospital, 15706 Santiago de Compostela, Spain
| | - Verónica López-López
- Musculoskeletal Pathology Group, Institute IDIS, Santiago University Clinical Hospital, 15706 Santiago de Compostela, Spain
| | - Alberto Jorge-Mora
- Musculoskeletal Pathology Group, Institute IDIS, Santiago University Clinical Hospital, 15706 Santiago de Compostela, Spain
| | - José P. Cerón-Carrasco
- Centro Universitario de la Defensa, Universidad Politécnica de Cartagena, C/Coronel López Peña S/N, Base Aérea de San Javier, Santiago de La Ribera, 30720 Murcia, Spain
| | - Ana Lois Iglesias
- Musculoskeletal Pathology Group, Institute IDIS, Santiago University Clinical Hospital, 15706 Santiago de Compostela, Spain
| | - Rodolfo Gómez
- Musculoskeletal Pathology Group, Institute IDIS, Santiago University Clinical Hospital, 15706 Santiago de Compostela, Spain
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4
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Wang YL, Guo XT, Zhu MY, Mao YC, Xu XB, Hua Y, Xu L, Jiang LH, Zhao CY, Zhang X, Sheng GX, Jiang PF, Yuan ZF, Gao F. Metagenomic next-generation sequencing and proteomics analysis in pediatric viral encephalitis and meningitis. Front Cell Infect Microbiol 2023; 13:1104858. [PMID: 37153144 PMCID: PMC10161730 DOI: 10.3389/fcimb.2023.1104858] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Accepted: 03/22/2023] [Indexed: 05/09/2023] Open
Abstract
Introduction Early and accurate identification of pathogens is essential for improved outcomes in patients with viral encephalitis (VE) and/or viral meningitis (VM). Methods In our research, Metagenomic next-generation sequencing (mNGS) which can identify viral pathogens unbiasedly was performed on RNA and DNA to identify potential pathogens in cerebrospinal fluid (CSF) samples from 50 pediatric patients with suspected VEs and/or VMs. Then we performed proteomics analysis on the 14 HEV-positive CSF samples and another 12 CSF samples from health controls (HCs). A supervised partial least squaresdiscriminant analysis (PLS-DA) and orthogonal PLS-DA (O-PLS-DA) model was performed using proteomics data. Results Ten viruses in 48% patients were identified and the most common pathogen was human enterovirus (HEV) Echo18. 11 proteins overlapping between the top 20 DEPs in terms of P value and FC and the top 20 proteins in PLS-DA VIP lists were acquired. Discussion Our result showed mNGS has certain advantages on pathogens identification in VE and VM and our research established a foundation to identify diagnosis biomarker candidates of HEV-positive meningitis based on MS-based proteomics analysis, which could also contribute toward investigating the HEV-specific host response patterns.
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Affiliation(s)
- Yi-Long Wang
- Department of Neurology, Children’s Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
- Children’s Hospital, Zhejiang University School of Medicine, National Clinical Research Center For Child Health, Hangzhou, Zhejiang, China
| | - Xiao-Tong Guo
- Department of Neurology, Children’s Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
- Children’s Hospital, Zhejiang University School of Medicine, National Clinical Research Center For Child Health, Hangzhou, Zhejiang, China
| | - Meng-Ying Zhu
- Department of Neurology, Children’s Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
- Children’s Hospital, Zhejiang University School of Medicine, National Clinical Research Center For Child Health, Hangzhou, Zhejiang, China
| | - Yu-Chen Mao
- Department of Neurology, Children’s Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
- Children’s Hospital, Zhejiang University School of Medicine, National Clinical Research Center For Child Health, Hangzhou, Zhejiang, China
| | - Xue-Bin Xu
- Department of Neurology, Children’s Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
- Children’s Hospital, Zhejiang University School of Medicine, National Clinical Research Center For Child Health, Hangzhou, Zhejiang, China
| | - Yi Hua
- Department of Neurology, Children’s Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
- Children’s Hospital, Zhejiang University School of Medicine, National Clinical Research Center For Child Health, Hangzhou, Zhejiang, China
| | - Lu Xu
- Department of Neurology, Children’s Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
- Children’s Hospital, Zhejiang University School of Medicine, National Clinical Research Center For Child Health, Hangzhou, Zhejiang, China
| | - Li-Hua Jiang
- Department of Neurology, Children’s Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
- Children’s Hospital, Zhejiang University School of Medicine, National Clinical Research Center For Child Health, Hangzhou, Zhejiang, China
| | - Cong-Ying Zhao
- Department of Neurology, Children’s Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
- Children’s Hospital, Zhejiang University School of Medicine, National Clinical Research Center For Child Health, Hangzhou, Zhejiang, China
| | - Xin Zhang
- Department of Neurology, Children’s Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
- Children’s Hospital, Zhejiang University School of Medicine, National Clinical Research Center For Child Health, Hangzhou, Zhejiang, China
| | - Guo-Xia Sheng
- Department of Neurology, Children’s Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
- Children’s Hospital, Zhejiang University School of Medicine, National Clinical Research Center For Child Health, Hangzhou, Zhejiang, China
| | - Pei-Fang Jiang
- Department of Neurology, Children’s Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
- Children’s Hospital, Zhejiang University School of Medicine, National Clinical Research Center For Child Health, Hangzhou, Zhejiang, China
| | - Zhe-Feng Yuan
- Department of Neurology, Children’s Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
- Children’s Hospital, Zhejiang University School of Medicine, National Clinical Research Center For Child Health, Hangzhou, Zhejiang, China
| | - Feng Gao
- Department of Neurology, Children’s Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
- Children’s Hospital, Zhejiang University School of Medicine, National Clinical Research Center For Child Health, Hangzhou, Zhejiang, China
- *Correspondence: Feng Gao,
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5
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Fujii Y, Liu L, Yagasaki L, Inotsume M, Chiba T, Asahara H. Cartilage Homeostasis and Osteoarthritis. Int J Mol Sci 2022; 23:6316. [PMID: 35682994 PMCID: PMC9181530 DOI: 10.3390/ijms23116316] [Citation(s) in RCA: 57] [Impact Index Per Article: 28.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Revised: 05/29/2022] [Accepted: 06/03/2022] [Indexed: 01/27/2023] Open
Abstract
Healthy limb joints are important for maintaining health and attaining longevity. Endochondral ossification (the replacement of cartilage with bone, occurring during skeletal development) is essential for bone formation, especially in long-axis bones. In contrast to endochondral ossification, chondrocyte populations in articular cartilage persist and maintain joint tissue into adulthood. Articular cartilage, a connective tissue consisting of chondrocytes and their surrounding extracellular matrices, plays an essential role in the mechanical cushioning of joints in postnatal locomotion. Osteoarthritis (OA) pathology relates to disruptions in the balance between anabolic and catabolic signals, that is, the loss of chondrocyte homeostasis due to aging or overuse of cartilages. The onset of OA increases with age, shortening a person's healthy life expectancy. Although many people with OA experience pain, the mainstay of treatment is symptomatic therapy, and no fundamental treatment has yet been established. To establish regenerative or preventative therapies for cartilage diseases, further understanding of the mechanisms of cartilage development, morphosis, and homeostasis is required. In this review, we describe the general development of cartilage and OA pathology, followed by a discussion on anabolic and catabolic signals in cartilage homeostasis, mainly microRNAs.
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Affiliation(s)
- Yuta Fujii
- Department of Systems Biomedicine, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo 113-8501, Japan; (Y.F.); (L.L.); (L.Y.); (M.I.); (T.C.)
| | - Lin Liu
- Department of Systems Biomedicine, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo 113-8501, Japan; (Y.F.); (L.L.); (L.Y.); (M.I.); (T.C.)
| | - Lisa Yagasaki
- Department of Systems Biomedicine, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo 113-8501, Japan; (Y.F.); (L.L.); (L.Y.); (M.I.); (T.C.)
- Department of Periodontology, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo 113-851, Japan
| | - Maiko Inotsume
- Department of Systems Biomedicine, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo 113-8501, Japan; (Y.F.); (L.L.); (L.Y.); (M.I.); (T.C.)
| | - Tomoki Chiba
- Department of Systems Biomedicine, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo 113-8501, Japan; (Y.F.); (L.L.); (L.Y.); (M.I.); (T.C.)
| | - Hiroshi Asahara
- Department of Systems Biomedicine, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo 113-8501, Japan; (Y.F.); (L.L.); (L.Y.); (M.I.); (T.C.)
- Department of Molecular and Experimental Medicine, The Scripps Research Institute, La Jolla, CA 92037, USA
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6
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Geyer M, Schönfeld C, Schreiyäck C, Susanto S, Michel C, Looso M, Braun T, Borchardt T, Neumann E, Müller-Ladner U. Comparative transcriptional profiling of regenerating damaged knee joints in two animal models of the newt Notophthalmus viridescens strengthens the role of candidate genes involved in osteoarthritis. OSTEOARTHRITIS AND CARTILAGE OPEN 2022; 4:100273. [DOI: 10.1016/j.ocarto.2022.100273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Revised: 05/10/2022] [Accepted: 05/12/2022] [Indexed: 10/18/2022] Open
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7
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Wei Z, Li F, Pi G. Association Between Gut Microbiota and Osteoarthritis: A Review of Evidence for Potential Mechanisms and Therapeutics. Front Cell Infect Microbiol 2022; 12:812596. [PMID: 35372125 PMCID: PMC8966131 DOI: 10.3389/fcimb.2022.812596] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Accepted: 02/24/2022] [Indexed: 12/12/2022] Open
Abstract
Osteoarthritis (OA) is a multifactorial joint disease characterized by degeneration of articular cartilage, which leads to joints pain, disability and reduced quality of life in patients with OA. Interpreting the potential mechanisms underlying OA pathogenesis is crucial to the development of new disease modifying treatments. Although multiple factors contribute to the initiation and progression of OA, gut microbiota has gradually been regarded as an important pathogenic factor in the development of OA. Gut microbiota can be regarded as a multifunctional “organ”, closely related to a series of immune, metabolic and neurological functions. This review summarized research evidences supporting the correlation between gut microbiota and OA, and interpreted the potential mechanisms underlying the correlation from four aspects: immune system, metabolism, gut-brain axis and gut microbiota modulation. Future research should focus on whether there are specific gut microbiota composition or even specific pathogens and the corresponding signaling pathways that contribute to the initiation and progression of OA, and validate the potential of targeting gut microbiota for the treatment of patients with OA.
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Affiliation(s)
| | - Feng Li
- *Correspondence: Feng Li, ; Guofu Pi,
| | - Guofu Pi
- *Correspondence: Feng Li, ; Guofu Pi,
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8
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Qiu C, Han Y, Zhang H, Liu T, Hou H, Luo D, Yu M, Bian K, Zhao Y, Xiao X. Perspectives on long pentraxin 3 and rheumatoid arthritis: several potential breakthrough points relying on study foundation of the past. Int J Med Sci 2021; 18:1886-1898. [PMID: 33746606 PMCID: PMC7976587 DOI: 10.7150/ijms.54787] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Accepted: 01/24/2021] [Indexed: 12/27/2022] Open
Abstract
Rheumatoid arthritis (RA) is a systemic chronic autoimmune inflammatory disease which is mainly characterized by synovitis and results in a severe burden for both the individual and society. To date, the underlying mechanisms of RA are still poorly understood. Pentraxin 3 (PTX3) is a typical long pentraxin protein which has been highly conserved during evolution. Meanwhile, functions as well as properties of PTX3 have been extensively studied. Several studies identified that PTX3 plays a predominate role in infection, inflammation, immunity and tumor. Interestingly, PTX3 has also been verified to be closely associated with development of RA. We therefore accomplished an elaboration of the relationships between PTX3 and RA. Herein, we mainly focus on the associated cell types and cognate cytokines involved in RA, in combination with PTX3. This review infers the insight into the interaction of PTX3 in RA and aims to provide novel clues for potential therapeutic target of RA in clinic.
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Affiliation(s)
- Cheng Qiu
- Department of Orthopedic Surgery, The First Affiliated Hospital of Shandong First Medical University, Jinan 250014, Shandong, P. R. China.,Cheeloo College of Medicine, Shandong University, Jinan 250012, Shandong, P. R. China.,Department of Orthopaedic Surgery, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan 250012, Shandong, P. R. China
| | - Yichao Han
- Department of Orthopedic Surgery, The First Affiliated Hospital of Shandong First Medical University, Jinan 250014, Shandong, P. R. China.,Cheeloo College of Medicine, Shandong University, Jinan 250012, Shandong, P. R. China
| | - Hanwen Zhang
- Department of Orthopedic Surgery, The First Affiliated Hospital of Shandong First Medical University, Jinan 250014, Shandong, P. R. China.,Cheeloo College of Medicine, Shandong University, Jinan 250012, Shandong, P. R. China
| | - Tianyi Liu
- Cheeloo College of Medicine, Shandong University, Jinan 250012, Shandong, P. R. China
| | - Haodong Hou
- Department of Orthopedic Surgery, The First Affiliated Hospital of Shandong First Medical University, Jinan 250014, Shandong, P. R. China.,Cheeloo College of Medicine, Shandong University, Jinan 250012, Shandong, P. R. China
| | - Dan Luo
- College of Stomatology, Qingdao University, Qingdao 266071, Shandong, P. R. China
| | - Mingzhi Yu
- Key Laboratory of High Efficiency and Clean Manufacturing, School of Mechanical Engineering, Shandong University, Jinan 250061, Shandong, P. R. China
| | - Kai Bian
- Department of Orthopedic Surgery, The First Affiliated Hospital of Shandong First Medical University, Jinan 250014, Shandong, P. R. China.,Cheeloo College of Medicine, Shandong University, Jinan 250012, Shandong, P. R. China
| | - Yunpeng Zhao
- Department of Orthopaedic Surgery, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan 250012, Shandong, P. R. China
| | - Xing Xiao
- Department of Orthopedic Surgery, The First Affiliated Hospital of Shandong First Medical University, Jinan 250014, Shandong, P. R. China
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9
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Gao X, Ma Y, Zhang G, Tang F, Zhang J, Cao J, Liu C. Targeted elimination of intracellular reactive oxygen species using nanoparticle-like chitosan- superoxide dismutase conjugate for treatment of monoiodoacetate-induced osteoarthritis. Int J Pharm 2020; 590:119947. [DOI: 10.1016/j.ijpharm.2020.119947] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Revised: 09/14/2020] [Accepted: 10/01/2020] [Indexed: 12/17/2022]
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10
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Bisson DG, Sheng K, Kocabas S, Krock E, Teles A, Saran N, Ouellet JA, Haglund L. Toll-like receptor involvement in adolescent scoliotic facet joint degeneration. J Cell Mol Med 2020; 24:11355-11365. [PMID: 32853438 PMCID: PMC7576299 DOI: 10.1111/jcmm.15733] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Accepted: 07/17/2020] [Indexed: 12/22/2022] Open
Abstract
Facet joint osteoarthritis is prevalent in young patients with adolescent idiopathic scoliosis (AIS) and might contribute to back pain. Toll-like receptors (TLR) have been linked to cartilaginous tissue degeneration but their involvement in facet joint osteoarthritis in AIS patients is still unknown. We compared baseline gene expression levels of TLRs -1, -2, -4, and -6 in scoliotic and non-scoliotic chondrocytes and found higher expression levels in scoliotic chondrocytes with significantly higher TLR2 levels. Furthermore, TLR expression correlated strongly and significantly with inflammatory and catabolic markers in scoliotic but not in non-scoliotic chondrocytes. TLR activation with a synthetic TLR2/6 agonist resulted in a robust induction and release of pro-inflammatory and catabolic factors which exacerbated proteoglycan loss in scoliotic but not in non-scoliotic cartilage. We also detected a higher abundance of alarmins including S100A8/9 and biglycan in scoliotic cartilage. Finally, the small-molecule antagonists Sparstolonin B and o-Vanillin reduced catabolism following induction with naturally occurring alarmins and the synthetic TLR2/6 agonist. The high baseline expression, robust responsiveness and strong and significant correlation with proteases and pro-inflammatory cytokines suggest that TLRs are key regulators of facet joint degeneration in AIS. Blocking their activity could therefore potentially modify disease progression.
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Affiliation(s)
- Daniel G Bisson
- Shriners Hospital for Children, Montreal, QC, Canada.,Orthopaedic Research Laboratory, Department of Orthopedic Surgery, McGill University, Montreal, QC, Canada
| | - Kai Sheng
- Shriners Hospital for Children, Montreal, QC, Canada.,Orthopaedic Research Laboratory, Department of Orthopedic Surgery, McGill University, Montreal, QC, Canada
| | - Semsi Kocabas
- Shriners Hospital for Children, Montreal, QC, Canada.,Orthopaedic Research Laboratory, Department of Orthopedic Surgery, McGill University, Montreal, QC, Canada
| | - Emerson Krock
- Orthopaedic Research Laboratory, Department of Orthopedic Surgery, McGill University, Montreal, QC, Canada
| | - Alisson Teles
- Shriners Hospital for Children, Montreal, QC, Canada
| | - Neil Saran
- Shriners Hospital for Children, Montreal, QC, Canada
| | - Jean A Ouellet
- Shriners Hospital for Children, Montreal, QC, Canada.,Orthopaedic Research Laboratory, Department of Orthopedic Surgery, McGill University, Montreal, QC, Canada
| | - Lisbet Haglund
- Shriners Hospital for Children, Montreal, QC, Canada.,Orthopaedic Research Laboratory, Department of Orthopedic Surgery, McGill University, Montreal, QC, Canada
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11
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Differential Secretome Profiling of Human Osteoarthritic Synoviocytes Treated with Biotechnological Unsulfated and Marine Sulfated Chondroitins. Int J Mol Sci 2020; 21:ijms21113746. [PMID: 32466468 PMCID: PMC7312545 DOI: 10.3390/ijms21113746] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Revised: 05/21/2020] [Accepted: 05/23/2020] [Indexed: 02/07/2023] Open
Abstract
Symptomatic slow-acting drugs (SYSADOA) are increasingly used as effective therapies for osteoarthritis, representing an attractive alternative to analgesics or non-steroidal anti-inflammatory drugs to relieve disease symptoms. Pharmaceutical preparations of chondroitin sulfate, derived from animal sources, alone or in combination with glucosamine sulfate, are widely recognized for their beneficial effect on osteoarthritis treatment. A growing interest has also been devoted to understanding the molecular mechanisms modulated by SYSADOA using -omic strategies, most of which rely on chondrocytes as a model system. In this work, by using an integrated strategy based on unbiased proteomics and targeted cytokine profiling by a multiplexed protein array, we identified differences in the secretomes of human osteoarthritic synoviocytes in response to biotechnological unsulfated, and marine sulfated chondroitins treatments. The combined strategy allowed the identification of candidate proteins showing both common and distinct regulation responses to the two treatments of chondroitins. These molecules, mainly belonging to ECM proteins, enzymes, enzymatic inhibitors and cytokines, are potentially correlated to treatment outcomes. Overall, the present results provide an integrated overview of protein changes in human osteoarthritic synoviocytes secretome associated to different chondroitin treatments, thus improving current knowledge of the biochemical effects driven by these drugs potentially involved in pathways associated to osteoarthritis pathogenesis.
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Sinkeviciute D, Aspberg A, He Y, Bay-Jensen AC, Önnerfjord P. Characterization of the interleukin-17 effect on articular cartilage in a translational model: an explorative study. BMC Rheumatol 2020; 4:30. [PMID: 32426694 PMCID: PMC7216541 DOI: 10.1186/s41927-020-00122-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2019] [Accepted: 03/06/2020] [Indexed: 12/29/2022] Open
Abstract
Background Osteoarthritis (OA) is a progressive, chronic disease characterized by articular cartilage destruction. The pro-inflammatory cytokine IL-17 levels have been reported elevated in serum and synovial fluid of OA patients and correlated with increased cartilage defects and bone remodeling. The aim of this study was to characterize an IL-17-mediated articular cartilage degradation ex-vivo model and to investigate IL-17 effect on cartilage extracellular matrix protein turnover. Methods Full-depth bovine femoral condyle articular cartilage explants were cultured in serum-free medium for three weeks in the absence, or presence of cytokines: IL-17A (100 ng/ml or 25 ng/ml), or 10 ng OSM combined with 20 ng/ml TNFα (O + T). RNA isolation and PCR analysis were performed on tissue lysates to confirm IL-17 receptor expression. GAG and ECM-turnover biomarker release into conditioned media was assessed with dimethyl methylene blue and ELISA assays, respectively. Gelatin zymography was used for matrix metalloproteinase (MMP) 2 and MMP9 activity assessment in conditioned media, and shotgun LC-MS/MS for identification and label-free quantification of proteins and protein fragments in conditioned media. Western blotting was used to validate MS results. Results IL-17RA mRNA was expressed in bovine full-depth articular cartilage and the treatment with IL-17A did not interfere with metabolic activity of the model. IL-17A induced cartilage breakdown; conditioned media GAG levels were 3.6-fold-elevated compared to untreated. IL-17A [100 ng/ml] induced ADAMTS-mediated aggrecan degradation fragment release (14-fold increase compared to untreated) and MMP-mediated type II collagen fragment release (6-fold-change compared to untreated). MS data analysis revealed 16 differentially expressed proteins in IL-17A conditioned media compared to untreated, and CHI3L1 upregulation in conditioned media in response to IL-17 was confirmed by Western blotting. Conclusions We showed that IL-17A has cartilage modulating potential. It induces collagen and aggrecan degradation indicating an upregulation of MMPs. This was confirmed by zymography and mass spectrometry data. We also showed that the expression of other cytokines is induced by IL-17A, which provide further insight to the pathways that are active in response to IL-17A. This exploratory study confirms that IL-17A may play a role in cartilage pathology and that the applied model may be a good tool to further investigate it.
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Affiliation(s)
- Dovile Sinkeviciute
- 1Nordic Bioscience, Biomarkers & Research, Herlev, Denmark.,2Rheumatology and Molecular Skeletal Biology, Department of Clinical Sciences Lund, Lund University, Lund, Sweden
| | - Anders Aspberg
- 2Rheumatology and Molecular Skeletal Biology, Department of Clinical Sciences Lund, Lund University, Lund, Sweden
| | - Yi He
- 1Nordic Bioscience, Biomarkers & Research, Herlev, Denmark
| | | | - Patrik Önnerfjord
- 2Rheumatology and Molecular Skeletal Biology, Department of Clinical Sciences Lund, Lund University, Lund, Sweden
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13
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Gut microbiota and obesity-associated osteoarthritis. Osteoarthritis Cartilage 2019; 27:1257-1265. [PMID: 31146016 DOI: 10.1016/j.joca.2019.05.009] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/15/2018] [Revised: 05/16/2019] [Accepted: 05/18/2019] [Indexed: 02/02/2023]
Abstract
Obesity is a well-known primary risk factor for osteoarthritis (OA). In recent decades, the biomechanics-based theoretical paradigm for the pathogenesis of obesity-associated OA has been gradually but fundamentally modified. This modification is a result of accumulating evidence that biological factors also contribute to the etiology of the disease. The gut microbiota is a complicated ecosystem that profoundly influences the health of the host and can be modulated by the combined effects of environmental stimuli and genetic factors. Recently, enteric dysbacteriosis has been identified as a causal factor in the initiation and propagation of obesity-associated OA in animal models. Gut microbes and their components, microbe-associated lipid metabolites, and OA interact at both systemic and local levels through mechanisms that involve interplay with the innate immune system. However, the demonstration of causality in humans will require further studies. Nonetheless, probiotics, prebiotics, dietary habits and exercise, which aid the restoration of a healthy microbial community, are potential therapeutic approaches in the treatment of obesity-associated OA.
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Jin J, Yu X, Hu Z, Tang S, Zhong X, Xu J, Shang P, Huang Y, Liu H. Isofraxidin targets the TLR4/MD-2 axis to prevent osteoarthritis development. Food Funct 2019; 9:5641-5652. [PMID: 30299441 DOI: 10.1039/c8fo01445k] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Osteoarthritis (OA) is a major cause of joint pain and disability, resulting in large socioeconomic costs worldwide. Isofraxidin (ISO), a bioactive coumarin compound isolated from the functional foods Siberian ginseng and Apium graveolens, exerts anti-inflammatory effects in a variety of diseases. However, no studies have reported the protective effects of ISO against OA development. Accordingly, this study aimed to assess the therapeutic effect of ISO in human OA chondrocytes, and in a mouse model of OA induced by destabilisation of the medial meniscus (DMM). In vitro, lipopolysaccharide (LPS)-induced overproduction of nitric oxide (NO), prostaglandin E2 (PGE2), tumour necrosis factor-alpha (TNF-α) and interleukin-6 (IL-6) was decreased by ISO pre-treatment. Furthermore, ISO attenuated the increased expression of inflammatory enzymes, including inducible nitric oxide synthase (iNOS) and cyclooxygenase-2 (COX-2), in response to LPS stimulation. Meanwhile, LPS-induced extracellular matrix (ECM) degradation was also reversed by ISO treatment. Mechanistically, ISO competitively inhibited Toll-like receptor 4 (TLR4)/myeloid differentiation protein-2 (MD-2) complex formation, and thus TLR4/nuclear factor kappa B (NF-κB) signalling cascades. In vivo, ISO treatment not only prevented the calcification and erosion of cartilage, as well as the thickening of subchondral bone, but also reduced the serum levels of inflammatory cytokines in the mouse OA model. Taken together, these data suggest that ISO has potential in the treatment of OA.
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Affiliation(s)
- Jialei Jin
- Department of Orthopaedic Surgery, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, 109, Xueyuanxi road, 325027 Wenzhou, China.
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G. Bisson D, Lama P, Abduljabbar F, Rosenzweig DH, Saran N, Ouellet JA, Haglund L. Facet joint degeneration in adolescent idiopathic scoliosis. JOR Spine 2018; 1:e1016. [PMID: 31463443 PMCID: PMC6686828 DOI: 10.1002/jsp2.1016] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Revised: 05/01/2018] [Accepted: 05/01/2018] [Indexed: 01/06/2023] Open
Abstract
Adolescent idiopathic scoliosis (AIS) is a poorly understood deformity of the thoracolumbar spine which affects the intervertebral discs (IVDs) and the articular facet joints. The knowledge concerning facet joints in this context is very limited, although facet joint degeneration is a known contributor of back pain. In this study, a comprehensive investigation was performed to characterize the facet joint chondrocytes and extracellular matrix within the scoliotic spine. Surgically removed articular facet joint tissues were collected from patients undergoing spinal corrective surgery for AIS deformities, while non-scoliotic articular facet joint tissues were obtained from cadaveric organ donors. Alterations in cartilage tissue structure were evaluated histologically with safranin-O fast green and a modified OARSI grading scale. Pro-inflammatory cytokines, matrix-degrading proteases, and fragmented matrix molecules associated with cartilage degradation were analyzed by immunohistochemistry and western blotting. Safranin-O fast green staining revealed that young scoliotic facet joints show clear signs of degeneration with substantial proteoglycan loss, similar to osteoarthritis (OA). The proteoglycan levels were significantly lower than in healthy asymptomatic non-scoliotic control individuals. In comparison to controls, scoliotic articular facets showed increased cell density, increased expression of the proliferation marker Ki-67, and higher expression of MMP-3, MMP-13, and IL-1β. Expression and fragmentation of the small leucine-rich proteins (SLRPs) chondroadherin, decorin, biglycan, lumican, and fibromodulin were analyzed with western blot. Chondroadherin and decorin were fragmented in cartilage from patients with a curve greater than 70°, whereas biglycan and fibromodulin did not show curve-related fragmentation. AIS facet joint cartilage shows hallmarks of OA including proteoglycan loss, overexpression of pro-inflammatory mediators, increased synthesis of matrix-degrading proteases and fragmentation of SLRPs. As with patients with age-related OA, the premature joint degeneration seen in scoliotic patients is likely to contribute to the pain perceived in some individuals.
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Affiliation(s)
- Daniel G. Bisson
- Orthopaedic Research LaboratoryShriners Hospital for ChildrenMontrealQuebecCanada
- Department of Orthopedic SurgeryMcGill UniversityMontrealQuebecCanada
| | - Polly Lama
- Orthopaedic Research LaboratoryShriners Hospital for ChildrenMontrealQuebecCanada
- Department of Orthopedic SurgeryMcGill UniversityMontrealQuebecCanada
| | - Fahad Abduljabbar
- Department of Orthopedic SurgeryMcGill UniversityMontrealQuebecCanada
- Department of Orthopedic SurgeryKing Abdulaziz UniversityJeddahSaudi Arabia
| | | | - Neil Saran
- Orthopaedic Research LaboratoryShriners Hospital for ChildrenMontrealQuebecCanada
| | - Jean A. Ouellet
- Orthopaedic Research LaboratoryShriners Hospital for ChildrenMontrealQuebecCanada
- Department of Orthopedic SurgeryMcGill UniversityMontrealQuebecCanada
| | - Lisbet Haglund
- Orthopaedic Research LaboratoryShriners Hospital for ChildrenMontrealQuebecCanada
- Department of Orthopedic SurgeryMcGill UniversityMontrealQuebecCanada
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Szatmári T, Persa E, Kis E, Benedek A, Hargitai R, Sáfrány G, Lumniczky K. Extracellular vesicles mediate low dose ionizing radiation-induced immune and inflammatory responses in the blood. Int J Radiat Biol 2018. [PMID: 29533121 DOI: 10.1080/09553002.2018.1450533] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
PURPOSE Radiation-induced bystander effects (RIBE) imply the involvement of complex signaling mechanisms, which can be mediated by extracellular vesicles (EVs). Using an in vivo model, we investigated EV-transmitted RIBE in blood plasma and radiation effects on plasma EV miRNA profiles. MATERIALS AND METHODS C57Bl/6 mice were total-body irradiated with 0.1 and 2 Gy, bone marrow-derived EVs were isolated, and injected systemically into naive, 'bystander' animals. Proteome profiler antibody array membranes were used to detect alterations in plasma, both in directly irradiated and bystander mice. MiRNA profile of plasma EVs was determined by PCR array. RESULTS M-CSF and pentraxin-3 levels were increased in the blood of directly irradiated and bystander mice both after low and high dose irradiations, CXCL16 and lipocalin-2 increased after 2 Gy in directly irradiated and bystander mice, CCL5 and CCL11 changed in bystander mice only. Substantial overlap was found in the cellular pathways regulated by those miRNAs whose level were altered in EVs isolated from the plasma of mice irradiated with 0.1 and 2 Gy. Several of these pathways have already been associated with bystander responses. CONCLUSION Low and high dose effects overlapped both in EV-mediated alterations in signaling pathways leading to RIBE and in their systemic manifestations.
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Affiliation(s)
- Tünde Szatmári
- a Department of Radiation Medicine, Division of Radiobiology and Radiohygiene , National Public Health Institute , Budapest , Hungary
| | - Eszter Persa
- a Department of Radiation Medicine, Division of Radiobiology and Radiohygiene , National Public Health Institute , Budapest , Hungary
| | - Enikő Kis
- a Department of Radiation Medicine, Division of Radiobiology and Radiohygiene , National Public Health Institute , Budapest , Hungary
| | - Anett Benedek
- a Department of Radiation Medicine, Division of Radiobiology and Radiohygiene , National Public Health Institute , Budapest , Hungary
| | - Rita Hargitai
- a Department of Radiation Medicine, Division of Radiobiology and Radiohygiene , National Public Health Institute , Budapest , Hungary
| | - Géza Sáfrány
- a Department of Radiation Medicine, Division of Radiobiology and Radiohygiene , National Public Health Institute , Budapest , Hungary
| | - Katalin Lumniczky
- a Department of Radiation Medicine, Division of Radiobiology and Radiohygiene , National Public Health Institute , Budapest , Hungary
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Toll-like Receptor Activation Induces Degeneration of Human Intervertebral Discs. Sci Rep 2017; 7:17184. [PMID: 29215065 PMCID: PMC5719358 DOI: 10.1038/s41598-017-17472-1] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2017] [Accepted: 11/26/2017] [Indexed: 01/07/2023] Open
Abstract
Toll-like receptors (TLR) are activated by endogenous alarmins such as fragmented extracellular matrix compounds found in the degenerating disc. TLRs regulate cytokine, neurotrophin, and protease expression in human disc cells in vitro, and thus control key factors in disc degeneration. However, whether TLR activation leads to degenerative changes in intact human discs is unclear. Nucleus pulposus (NP) cells isolated from non-degenerating discs increase IL-1β and nerve growth factor gene expression following treatment with Pam2CSK4 (TLR2/6 agonist) but not Pam3CSK4 (TLR1/2 agonist). Challenging NP cells with Pam2CSK4 or 30 kDa fibronectin fragments (FN-f, an endogenous TLR2 and TLR4 alarmin) increased secretion of proinflammatory cytokines. We then investigated the effect of TLR activation in intact, non-degenerate, ex vivo human discs. Discs were injected with PBS, Pam2CSK4 and FN-f, and cultured for 28 days. TLR activation increased proteoglycan and ECM protein release into the culture media and decreased proteoglycan content in the NP. Proteases, including MMP3, 13 and HTRA1, are secreted at higher levels following TLR activation. In addition, proinflammatory cytokine levels, including IL-6, TNFα and IFNγ, increased following TLR activation. These results indicate that TLR activation induces degeneration in human discs. Therefore, TLRs are potential disease-modifying therapeutic targets to slow disc degeneration.
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Neidlin M, Korcari A, Macheras G, Alexopoulos LG. Cue-Signal-Response Analysis in 3D Chondrocyte Scaffolds with Anabolic Stimuli. Ann Biomed Eng 2017; 46:345-353. [PMID: 29147820 DOI: 10.1007/s10439-017-1964-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2017] [Accepted: 11/14/2017] [Indexed: 11/25/2022]
Abstract
Articular cartilage is an avascular connective tissue responsible for bearing loads. Cell signaling plays a central role in cartilage homeostasis and tissue engineering by directing chondrocytes to synthesize/degrade the extracellular matrix or promote inflammatory responses. The aim of this paper was to investigate anabolic, catabolic and inflammatory pathways of well-known and underreported anabolic stimuli in 3D chondrocyte cultures and connect them to diverse cartilage responses including matrix regeneration and cell communication. A cue-signal-response experiment was performed in chondrocytes embedded in alginate scaffolds subjected to a 9-day treatment with 7 anabolic cues. At the signaling level diverse pathways were measured whereas at the response level glycosaminoglycan (GAG) synthesis and cytokine releases were monitored. A significant increase of GAG was observed for each stimulus and well known anabolic phosphoproteins were activated. In addition, WNK1, an underreported protein of chondrocyte signaling, was uncovered. At the extracellular level, inflammatory and regulating cytokines were measured and DEFB1 and CXCL10 were identified as novel contributors to chondrocyte responses, both closely linked to TLR signaling and inflammation. Finally, two new pro-growth factors with an inflammatory potential, Cadherin-11 and MGP were observed. Interestingly, well-known anabolic stimuli yielded inflammatory responses which pinpoints to the pleiotropic roles of individual stimuli.
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Affiliation(s)
- Michael Neidlin
- Department of Mechanical Engineering, National Technical University of Athens, Athens, Greece
| | - Antonion Korcari
- Department of Mechanical Engineering, National Technical University of Athens, Athens, Greece
| | | | - Leonidas G Alexopoulos
- Department of Mechanical Engineering, National Technical University of Athens, Athens, Greece.
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19
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Ha SH, Kim HK, Anh NTT, Kim N, Ko KS, Rhee BD, Han J. Time-dependent proteomic and genomic alterations in Toll-like receptor-4-activated human chondrocytes: increased expression of lamin A/C and annexins. THE KOREAN JOURNAL OF PHYSIOLOGY & PHARMACOLOGY : OFFICIAL JOURNAL OF THE KOREAN PHYSIOLOGICAL SOCIETY AND THE KOREAN SOCIETY OF PHARMACOLOGY 2017; 21:531-546. [PMID: 28883757 PMCID: PMC5587603 DOI: 10.4196/kjpp.2017.21.5.531] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/10/2017] [Revised: 05/04/2017] [Accepted: 05/10/2017] [Indexed: 12/25/2022]
Abstract
Activation of Toll-like receptor-4 (TLR-4) in articular chondrocytes increases the catabolic compartment and leads to matrix degradation during the development of osteoarthritis. In this study, we determined the proteomic and genomic alterations in human chondrocytes during lipopolysaccharide (LPS)-induced inflammation to elucidate the underlying mechanisms and consequences of TLR-4 activation. Human chondrocytes were cultured with LPS for 12, 24, and 36 h to induce TLR-4 activation. The TLR-4-induced inflammatory response was confirmed by real-time PCR analysis of increased interleukin-1 beta (IL-1β), interleukin-6 (IL-6), and tumor necrosis factor alpha (TNF-α) expression levels. In TLR-4-activated chondrocytes, proteomic changes were determined by two-dimensional electrophoresis and matrix-assisted laser desorption/ionization-mass spectroscopy analysis, and genomic changes were determined by microarray and gene ontology analyses. Proteomics analysis identified 26 proteins with significantly altered expression levels; these proteins were related to the cytoskeleton and oxidative stress responses. Gene ontology analysis indicated that LPS treatment altered specific functional pathways including ‘chemotaxis’, ‘hematopoietic organ development’, ‘positive regulation of cell proliferation’, and ‘regulation of cytokine biosynthetic process’. Nine of the 26 identified proteins displayed the same increased expression patterns in both proteomics and genomics analyses. Western blot analysis confirmed the LPS-induced increases in expression levels of lamin A/C and annexins 4/5/6. In conclusion, this study identified the time-dependent genomic, proteomic, and functional pathway alterations that occur in chondrocytes during LPS-induced TLR-4 activation. These results provide valuable new insights into the underlying mechanisms that control the development and progression of osteoarthritis.
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Affiliation(s)
- Seung Hee Ha
- National Research Laboratory for Mitochondrial Signaling, Department of Physiology, Department of Health Sciences and Technology, BK21 Plus Project Team, College of Medicine, Cardiovascular and Metabolic Disease Center, Inje University, Busan 47392, Korea.,Department of Health Technology Development, Health Project Management Team, Korea Health Industry Development Institute (KHIDI), Cheongju 28159, Korea
| | - Hyoung Kyu Kim
- National Research Laboratory for Mitochondrial Signaling, Department of Physiology, Department of Health Sciences and Technology, BK21 Plus Project Team, College of Medicine, Cardiovascular and Metabolic Disease Center, Inje University, Busan 47392, Korea
| | - Nguyen Thi Tuyet Anh
- National Research Laboratory for Mitochondrial Signaling, Department of Physiology, Department of Health Sciences and Technology, BK21 Plus Project Team, College of Medicine, Cardiovascular and Metabolic Disease Center, Inje University, Busan 47392, Korea
| | - Nari Kim
- National Research Laboratory for Mitochondrial Signaling, Department of Physiology, Department of Health Sciences and Technology, BK21 Plus Project Team, College of Medicine, Cardiovascular and Metabolic Disease Center, Inje University, Busan 47392, Korea
| | - Kyung Soo Ko
- National Research Laboratory for Mitochondrial Signaling, Department of Physiology, Department of Health Sciences and Technology, BK21 Plus Project Team, College of Medicine, Cardiovascular and Metabolic Disease Center, Inje University, Busan 47392, Korea
| | - Byoung Doo Rhee
- National Research Laboratory for Mitochondrial Signaling, Department of Physiology, Department of Health Sciences and Technology, BK21 Plus Project Team, College of Medicine, Cardiovascular and Metabolic Disease Center, Inje University, Busan 47392, Korea
| | - Jin Han
- National Research Laboratory for Mitochondrial Signaling, Department of Physiology, Department of Health Sciences and Technology, BK21 Plus Project Team, College of Medicine, Cardiovascular and Metabolic Disease Center, Inje University, Busan 47392, Korea
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20
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Sanchez C, Bay-Jensen AC, Pap T, Dvir-Ginzberg M, Quasnichka H, Barrett-Jolley R, Mobasheri A, Henrotin Y. Chondrocyte secretome: a source of novel insights and exploratory biomarkers of osteoarthritis. Osteoarthritis Cartilage 2017; 25:1199-1209. [PMID: 28232143 DOI: 10.1016/j.joca.2017.02.797] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/30/2016] [Revised: 01/31/2017] [Accepted: 02/14/2017] [Indexed: 02/02/2023]
Abstract
The extracellular matrix (ECM) of articular cartilage is comprised of complex networks of proteins and glycoproteins, all of which are expressed by its resident cell, the chondrocyte. Cartilage is a unique tissue given its complexity and ability to resist repeated load and deformation. The mechanisms by which articular cartilage maintains its integrity throughout our lifetime is not fully understood, however there are numerous regulatory pathways known to govern ECM turnover in response to mechanical stimuli. To further our understanding of this field, we envision that proteomic analysis of the secretome will provide information on how the chondrocyte remodels the surrounding ECM in response to load, in addition to providing information on the metabolic state of the cell. In this review, we attempt to summarize the recent mass spectrometry-based proteomic discoveries in healthy and diseased cartilage and chondrocytes, to facilitate the discovery of novel biomarkers linked to degenerative pathologies, such as osteoarthritis (OA).
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Affiliation(s)
- C Sanchez
- Bone and Cartilage Research Unit, Arthropôle Liège, University of Liège, CHU Sart-Tilman, Belgium; The D-BOARD European Consortium for Biomarker Discovery.
| | - A-C Bay-Jensen
- The D-BOARD European Consortium for Biomarker Discovery; Department of Rheumatology, Biomarkers and Research, Nordic Bioscience, Herlev Hovedgade 207, 2730, Herlev, Denmark.
| | - T Pap
- The D-BOARD European Consortium for Biomarker Discovery; Institute of Experimental Musculoskeletal Medicine, University Hospital Munster, Domagkstrasse 3, D-48149, Munster, Germany.
| | - M Dvir-Ginzberg
- The D-BOARD European Consortium for Biomarker Discovery; Institute of Dental Sciences, Faculty of Dental Medicine, Hebrew University of Jerusalem, P.O. Box 12272, Jerusalem, 91120, Israel.
| | - H Quasnichka
- The D-BOARD European Consortium for Biomarker Discovery; Department of Veterinary Pre-Clinical Sciences, School of Veterinary Medicine, University of Surrey, Guildford, GU2 7AL, United Kingdom.
| | - R Barrett-Jolley
- The D-BOARD European Consortium for Biomarker Discovery; Department of Musculoskeletal Biology, Institute of Ageing and Chronic Disease, Faculty of Health & Life Sciences, University of Liverpool, Liverpool, United Kingdom.
| | - A Mobasheri
- The D-BOARD European Consortium for Biomarker Discovery; Department of Veterinary Pre-Clinical Sciences, School of Veterinary Medicine, University of Surrey, Guildford, GU2 7AL, United Kingdom; Faculty of Health and Medical Sciences, Duke of Kent Building, University of Surrey, Guildford, Surrey, GU2 7XH, United Kingdom; Arthritis Research UK Centre for Sport, Exercise and Osteoarthritis, Queen's Medical Centre, Nottingham, NG7 2UH, United Kingdom; Center of Excellence in Genomic Medicine Research (CEGMR), King Fahd Medical Research Center (KFMRC), Faculty of Applied Medical Sciences, King Abdulaziz University, Jeddah, 21589, Saudi Arabia.
| | - Y Henrotin
- Bone and Cartilage Research Unit, Arthropôle Liège, University of Liège, CHU Sart-Tilman, Belgium; The D-BOARD European Consortium for Biomarker Discovery.
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Koppenol-Raab M, Sjoelund V, Manes NP, Gottschalk RA, Dutta B, Benet ZL, Fraser IDC, Nita-Lazar A. Proteome and Secretome Analysis Reveals Differential Post-transcriptional Regulation of Toll-like Receptor Responses. Mol Cell Proteomics 2017; 16:S172-S186. [PMID: 28235783 PMCID: PMC5393387 DOI: 10.1074/mcp.m116.064261] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2016] [Revised: 02/24/2017] [Indexed: 12/27/2022] Open
Abstract
The innate immune system is the organism's first line of defense against pathogens. Pattern recognition receptors (PRRs) are responsible for sensing the presence of pathogen-associated molecules. The prototypic PRRs, the membrane-bound receptors of the Toll-like receptor (TLR) family, recognize pathogen-associated molecular patterns (PAMPs) and initiate an innate immune response through signaling pathways that depend on the adaptor molecules MyD88 and TRIF. Deciphering the differences in the complex signaling events that lead to pathogen recognition and initiation of the correct response remains challenging. Here we report the discovery of temporal changes in the protein signaling components involved in innate immunity. Using an integrated strategy combining unbiased proteomics, transcriptomics and macrophage stimulations with three different PAMPs, we identified differences in signaling between individual TLRs and revealed specifics of pathway regulation at the protein level.
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Affiliation(s)
- Marijke Koppenol-Raab
- From the ‡Laboratory of Systems Biology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, 20892
| | - Virginie Sjoelund
- From the ‡Laboratory of Systems Biology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, 20892
| | - Nathan P Manes
- From the ‡Laboratory of Systems Biology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, 20892
| | - Rachel A Gottschalk
- From the ‡Laboratory of Systems Biology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, 20892
| | - Bhaskar Dutta
- From the ‡Laboratory of Systems Biology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, 20892
| | - Zachary L Benet
- From the ‡Laboratory of Systems Biology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, 20892
| | - Iain D C Fraser
- From the ‡Laboratory of Systems Biology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, 20892
| | - Aleksandra Nita-Lazar
- From the ‡Laboratory of Systems Biology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, 20892
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22
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Gu H, Jiao Y, Yu X, Li X, Wang W, Ding L, Liu L. Resveratrol inhibits the IL-1β-induced expression of MMP-13 and IL-6 in human articular chondrocytes via TLR4/MyD88-dependent and -independent signaling cascades. Int J Mol Med 2017; 39:734-740. [PMID: 28204817 DOI: 10.3892/ijmm.2017.2885] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2016] [Accepted: 02/03/2017] [Indexed: 11/05/2022] Open
Abstract
The natural polyphenolic compound, resveratrol, has been shown to exhibit anti-osteoarthritic activity. Therefore it is hypothesized that resveratrol may serve as a nutritional supplement to counteract osteoarthritis (OA). However, the mechanisms responsible for these anti-osteoarthritic effects have not yet been fully elucidated. The aim of this study was to determine whether the biological effects of resveratrol against interleukin (IL)-1β‑induced inflammation in human articular chondrocytes involved both Toll-like receptor 4 (TLR4)/myeloid differentiation factor 88 (MyD88)-dependent and -independent signaling pathways. Human articular chondrocytes derived from patients with OA were stimulated with IL-1β, and then co-treated with resveratrol. Cell viability was subsequently evaluated by MTS assays, and the concentrations of matrix metalloproteinase (MMP)-13 and the pro-inflammatory factor, IL-6, were detected in culture supernatants using ELISA. The mRNA and protein levels of downstream mediators of TLR4/MyD88-dependent and -independent signaling pathways were also assayed by RT-qPCR and western blot analysis, respectively. Our results revealed that resveratrol prevented the IL-1β-induced reduction in cell viability. Furthermore, stimulation of the chondrocytes with IL-1β resulted in a significant upregulation of TLR4 and downstream targets of both TLR4/MyD88-dependent and -independent signaling pathways that are associated with the synthesis of MMP-13 and IL-6. Correspondingly, IL-1β-induced catabolic and inflammatory responses were effectively reversed by resveratrol. Taken together, these data suggest that resveratrol exerted protective effects against matrix degradation and inflammation in OA-affected chondrocytes by inhibiting both TLR4/MyD88-dependent and -independent signaling pathways. Thus, resveratrol represents a potential treatment for OA and warrants further investigation.
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Affiliation(s)
- Hailun Gu
- Department of Orthopedics, Shengjing Hospital, China Medical University, Shenyang, Liaoning 110004, P.R. China
| | - Yongliang Jiao
- Department of Nutrition and Food Hygiene, School of Public Health, China Medical University, Shenyang, Liaoning 110122, P.R. China
| | - Xiaolu Yu
- Department of Nutrition and Food Hygiene, School of Public Health, China Medical University, Shenyang, Liaoning 110122, P.R. China
| | - Xingyao Li
- Department of Nutrition and Food Hygiene, School of Public Health, China Medical University, Shenyang, Liaoning 110122, P.R. China
| | - Wei Wang
- Department of Orthopedics, Shengjing Hospital, China Medical University, Shenyang, Liaoning 110004, P.R. China
| | - Lifeng Ding
- Department of Orthopedics, Shengjing Hospital, China Medical University, Shenyang, Liaoning 110004, P.R. China
| | - Li Liu
- Department of Nutrition and Food Hygiene, School of Public Health, China Medical University, Shenyang, Liaoning 110122, P.R. China
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Herath TDK, Darveau RP, Seneviratne CJ, Wang CY, Wang Y, Jin L. Heterogeneous Porphyromonas gingivalis LPS modulates immuno-inflammatory response, antioxidant defense and cytoskeletal dynamics in human gingival fibroblasts. Sci Rep 2016; 6:29829. [PMID: 27538450 PMCID: PMC4990928 DOI: 10.1038/srep29829] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2016] [Accepted: 06/22/2016] [Indexed: 12/30/2022] Open
Abstract
Periodontal (gum) disease is a highly prevalent infection and inflammation accounting for the majority of tooth loss in adult population worldwide. Porphyromonas gingivalis is a keystone periodontal pathogen and its lipopolysaccharide (PgLPS) acts as a major virulence attribute to the disease. Herein, we deciphered the overall host response of human gingival fibroblasts (HGFs) to two featured isoforms of tetra-acylated PgLPS1435/1449 and penta-acylated PgLPS1690 with reference to E. coli LPS through quantitative proteomics. This study unraveled differentially expressed novel biomarkers of immuno-inflammatory response, antioxidant defense and cytoskeletal dynamics in HGFs. PgLPS1690 greatly upregulated inflammatory proteins (e.g. cyclophilin, inducible nitric oxide synthase, annexins, galectin, cathepsins and heat shock proteins), whereas the anti-inflammatory proteins (e.g. Annexin A2 and Annexin A6) were significantly upregulated by PgLPS1435/1449. Interestingly, the antioxidants proteins such as mitochondrial manganese-containing superoxide dismutase and peroxiredoxin 5 were only upregulated by PgLPS1690. The cytoskeletal rearrangement-related proteins like myosin were differentially regulated by these PgLPS isoforms. The present study gives new insight into the biological properties of P. gingivalis LPS lipid A moiety that could critically modulate immuno-inflammatory response, antioxidant defense and cytoskeletal dynamics in HGFs, and thereby enhances our understanding of periodontal pathogenesis.
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Affiliation(s)
- Thanuja D K Herath
- National Dental Centre Singapore, Singapore.,Faculty of Dentistry, The University of Hong Kong, Hong Kong SAR, China
| | | | | | - Cun-Yu Wang
- School of Dentistry, University of California Los Angeles, Los Angeles, USA
| | - Yu Wang
- Department of Pharmacology &Pharmacy, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China
| | - Lijian Jin
- Faculty of Dentistry, The University of Hong Kong, Hong Kong SAR, China
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Di Rosa M, Malaguarnera L. Chitinase 3 Like-1: An Emerging Molecule Involved in Diabetes and Diabetic Complications. Pathobiology 2016; 83:228-42. [DOI: 10.1159/000444855] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2016] [Accepted: 02/18/2016] [Indexed: 11/19/2022] Open
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Deckx S, Heymans S, Papageorgiou AP. The diverse functions of osteoglycin: a deceitful dwarf, or a master regulator of disease? FASEB J 2016; 30:2651-61. [PMID: 27080639 DOI: 10.1096/fj.201500096r] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2015] [Accepted: 04/05/2016] [Indexed: 12/21/2022]
Abstract
Small leucine-rich proteoglycans are emerging as important regulatory proteins within the extracellular matrix, where they exert both structural and nonstructural functions and hence are modulators of numerous biological processes, such as inflammation, fibrosis, and cell proliferation. One proteoglycan in particular, osteoglycin (OGN), also known as mimecan, shows great structural and functional diversity in normal physiology and in disease states, therefore making it a very interesting candidate for the development of novel therapeutic strategies. Unfortunately, the literature on OGN is confusing, as it has different names, and different transcript and protein variants have been identified. This review will give a clear overview of the different structures and functions of OGN that have been identified to date, portray its central role in pathophysiology, and highlight the importance of posttranslational processing, such as glycosylation, for the diversity of its functions.-Deckx, S., Heymans, S., Papageorgiou, A.-P. The diverse functions of osteoglycin: a deceitful dwarf, or a master regulator of disease?
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Affiliation(s)
- Sophie Deckx
- Department of Cardiology, Maastricht University, Maastricht, The Netherlands; and Center for Molecular and Vascular Biology, Katholieke Universiteit (KU) Leuven, Leuven, Belgium
| | - Stephane Heymans
- Department of Cardiology, Maastricht University, Maastricht, The Netherlands; and Center for Molecular and Vascular Biology, Katholieke Universiteit (KU) Leuven, Leuven, Belgium
| | - Anna-Pia Papageorgiou
- Department of Cardiology, Maastricht University, Maastricht, The Netherlands; and Center for Molecular and Vascular Biology, Katholieke Universiteit (KU) Leuven, Leuven, Belgium
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Abstract
The nature of the gastrointestinal microbiome determines the reservoir of lipopolysaccharide, which can migrate from the gut into the circulation, where it contributes to low-grade inflammation. Osteoarthritis (OA) is a low-grade inflammatory condition, and the elevation of levels of lipopolysaccharide in association with obesity and metabolic syndrome could contribute to OA. A 'two- hit' model of OA susceptibility and potentiation suggests that lipopolysaccharide primes the proinflammatory innate immune response via Toll-like receptor 4 and that progression to a full-blown inflammatory response and structural damage of the joint results from coexisting complementary mechanisms, such as inflammasome activation or assembly by damage-associated molecular patterns in the form of fragmented cartilage-matrix molecules. Lipopolysaccharide could be considered a major hidden risk factor that provides a unifying mechanism to explain the association between obesity, metabolic syndrome and OA.
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Affiliation(s)
- Zeyu Huang
- Department of Orthopedic Surgery, West China Hospital, Sichuan University, No. 37 Guo Xue Road, Chengdu, Sichuan, 610041, People's Republic of China
| | - Virginia Byers Kraus
- Duke Molecular Physiology Institute and Division of Rheumatology, Department of Medicine, Duke University School of Medicine, 300 North Duke Street, Durham, North Carolina 27701, USA
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Cantó E, Espejo C, Costa C, Montalban X, Comabella M. Breast regression protein-39 is not required for experimental autoimmune encephalomyelitis induction. Clin Immunol 2015; 160:133-41. [DOI: 10.1016/j.clim.2015.06.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2015] [Revised: 06/05/2015] [Accepted: 06/07/2015] [Indexed: 11/29/2022]
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Bryant CE, Gay NJ, Heymans S, Sacre S, Schaefer L, Midwood KS. Advances in Toll-like receptor biology: Modes of activation by diverse stimuli. Crit Rev Biochem Mol Biol 2015; 50:359-79. [DOI: 10.3109/10409238.2015.1033511] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
| | - Nick J. Gay
- Department of Biochemistry, University of Cambridge, Cambridge, UK,
| | - Stephane Heymans
- Center for Molecular and Vascular Biology, Department of Cardiovascular Sciences, University of Leuven, Leuven, Belgium,
- ICIN – Netherlands Heart Institute, Utrecht, The Netherlands,
| | - Sandra Sacre
- Brighton & Sussex Medical School, University of Sussex, Brighton, UK,
| | - Liliana Schaefer
- Pharmazentrum Frankfurt/ZAFES, Institut für Allgemeine Pharmakologie und Toxikologie, Klinikum der Goethe-Universität Frankfurt am Main, Frankfurt am Main, Germany, and
| | - Kim S. Midwood
- Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, Kennedy Institute of Rheumatology, University of Oxford, Oxford, UK
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Gómez R, Villalvilla A, Largo R, Gualillo O, Herrero-Beaumont G. TLR4 signalling in osteoarthritis—finding targets for candidate DMOADs. Nat Rev Rheumatol 2014; 11:159-70. [DOI: 10.1038/nrrheum.2014.209] [Citation(s) in RCA: 149] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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Low-frequency high-magnitude mechanical strain of articular chondrocytes activates p38 MAPK and induces phenotypic changes associated with osteoarthritis and pain. Int J Mol Sci 2014; 15:14427-41. [PMID: 25196344 PMCID: PMC4159860 DOI: 10.3390/ijms150814427] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2014] [Revised: 08/12/2014] [Accepted: 08/14/2014] [Indexed: 01/07/2023] Open
Abstract
Osteoarthritis (OA) is a debilitating joint disorder resulting from an incompletely understood combination of mechanical, biological, and biochemical processes. OA is often accompanied by inflammation and pain, whereby cytokines associated with chronic OA can up-regulate expression of neurotrophic factors such as nerve growth factor (NGF). Several studies suggest a role for cytokines and NGF in OA pain, however the effects of changing mechanical properties in OA tissue on chondrocyte metabolism remain unclear. Here, we used high-extension silicone rubber membranes to examine if high mechanical strain (HMS) of primary articular chondrocytes increases inflammatory gene expression and promotes neurotrophic factor release. HMS cultured chondrocytes displayed up-regulated NGF, TNFα and ADAMTS4 gene expression while decreasing TLR2 expression, as compared to static controls. HMS culture increased p38 MAPK activity compared to static controls. Conditioned medium from HMS dynamic cultures, but not static cultures, induced significant neurite sprouting in PC12 cells. The increased neurite sprouting was accompanied by consistent increases in PC12 cell death. Low-frequency high-magnitude mechanical strain of primary articular chondrocytes in vitro drives factor secretion associated with degenerative joint disease and joint pain. This study provides evidence for a direct link between cellular strain, secretory factors, neo-innervation, and pain in OA pathology.
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Chitinase 3-like 1 is induced by Plasmodium falciparum malaria and predicts outcome of cerebral malaria and severe malarial anaemia in a case-control study of African children. Malar J 2014; 13:279. [PMID: 25047113 PMCID: PMC4114103 DOI: 10.1186/1475-2875-13-279] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2014] [Accepted: 07/17/2014] [Indexed: 11/24/2022] Open
Abstract
Background Severe and fatal malaria are associated with dysregulated host inflammatory responses to infection. Chitinase 3-like 1 (CHI3L1) is a secreted glycoprotein implicated in regulating immune responses. Expression and function of CHI3L1 in malaria infection were investigated. Methods Plasma levels of CHI3L1 were quantified in a case–control study of Ugandan children presenting with Plasmodium falciparum malaria. CHI3L1 levels were compared in children with uncomplicated malaria (UM; n = 53), severe malarial anaemia (SMA; n = 59) and cerebral malaria (CM; n = 44) using the Kruskall Wallis-test, and evaluated for utility in predicting fatal (n = 23) versus non-fatal (n = 80) outcomes in severe disease using the Mann Whitney U test, receiver operating characteristic curves, and combinatorial analysis. Co-culture of P. falciparum with human peripheral blood mononuclear cells and the Plasmodium berghei ANKA experimental model of cerebral malaria were used to examine the role of CHI3L1 in severe malaria. Results In children presenting with falciparum malaria, CHI3L1 levels were increased in SMA and CM versus UM (p < 0.001). Among severe malaria cases, CHI3L1 levels at presentation predicted subsequent death (area under receiver operating characteristic curve 0.84 [95% CI 0.76-0.92]) and in combination with other host biomarkers, predicted mortality with high sensitivity (100% [85.7-100]) and specificity (81.3% [71.3-88.3]). Plasmodium falciparum stimulated CHI3L1 production by human peripheral blood mononuclear cells in vitro. CHI3L1 was increased in plasma and brain tissue in experimental cerebral malaria, but targeted Chi3l1 deletion did not alter cytokine production or survival in this model. Conclusions These data suggest that plasma CHI3L1 measured at presentation correlates with malaria severity and predicts outcome in paediatric SMA and CM, but do not support a causal role for CHI3L1 in cerebral malaria pathobiology in the model tested.
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32
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Homeostatic mechanisms in articular cartilage and role of inflammation in osteoarthritis. Curr Rheumatol Rep 2014; 15:375. [PMID: 24072604 DOI: 10.1007/s11926-013-0375-6] [Citation(s) in RCA: 230] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Osteoarthritis (OA) is a whole joint disease, in which thinning and disappearance of cartilage is a critical determinant in OA progression. The rupture of cartilage homeostasis whatever its cause (aging, genetic predisposition, trauma or metabolic disorder) induces profound phenotypic modifications of chondrocytes, which then promote the synthesis of a subset of factors that induce cartilage damage and target other joint tissues. Interestingly, among these factors are numerous components of the inflammatory pathways. Chondrocytes produce cytokines, chemokines, alarmins, prostanoids, and adipokines and express numerous cell surface receptors for cytokines and chemokines, as well as Toll-like receptors. These receptors activate intracellular signaling pathways involved in inflammatory and stress responses of chondrocytes in OA joints. This review focuses on mechanisms responsible for the maintenance of cartilage homeostasis and highlights the role of inflammatory processes in OA progression.
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Melas IN, Chairakaki AD, Chatzopoulou EI, Messinis DE, Katopodi T, Pliaka V, Samara S, Mitsos A, Dailiana Z, Kollia P, Alexopoulos LG. Modeling of signaling pathways in chondrocytes based on phosphoproteomic and cytokine release data. Osteoarthritis Cartilage 2014; 22:509-18. [PMID: 24457104 DOI: 10.1016/j.joca.2014.01.001] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/29/2013] [Revised: 01/02/2014] [Accepted: 01/07/2014] [Indexed: 02/02/2023]
Abstract
OBJECTIVE Chondrocyte signaling is widely identified as a key component in cartilage homeostasis. Dysregulations of the signaling processes in chondrocytes often result in degenerative diseases of the tissue. Traditionally, the literature has focused on the study of major players in chondrocyte signaling, but without considering the cross-talks between them. In this paper, we systematically interrogate the signal transduction pathways in chondrocytes, on both the phosphoproteomic and cytokine release levels. METHODS The signaling pathways downstream 78 receptors of interest are interrogated. On the phosphoproteomic level, 17 key phosphoproteins are measured upon stimulation with single treatments of 78 ligands. On the cytokine release level, 55 cytokines are measured in the supernatant upon stimulation with the same treatments. Using an Integer Linear Programming (ILP) formulation, the proteomic data is combined with a priori knowledge of proteins' connectivity to construct a mechanistic model, predictive of signal transduction in chondrocytes. RESULTS We were able to validate previous findings regarding major players of cartilage homeostasis and inflammation (e.g., IL1B, TNF, EGF, TGFA, INS, IGF1 and IL6). Moreover, we studied pro-inflammatory mediators (IL1B and TNF) together with pro-growth signals for investigating their role in chondrocytes hypertrophy and highlighted the role of underreported players such as Inhibin beta A (INHBA), Defensin beta 1 (DEFB1), CXCL1 and Flagellin, and uncovered the way they cross-react in the phosphoproteomic level. CONCLUSIONS The analysis presented herein, leveraged high throughput proteomic data via an ILP formulation to gain new insight into chondrocytes signaling and the pathophysiology of degenerative diseases in articular cartilage.
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Affiliation(s)
- I N Melas
- Mechanical Engineering Department, National Technical University of Athens, Athens, Greece; Protatonce Ltd., Athens, Greece
| | - A D Chairakaki
- Mechanical Engineering Department, National Technical University of Athens, Athens, Greece
| | - E I Chatzopoulou
- Mechanical Engineering Department, National Technical University of Athens, Athens, Greece
| | - D E Messinis
- Mechanical Engineering Department, National Technical University of Athens, Athens, Greece; Protatonce Ltd., Athens, Greece
| | - T Katopodi
- Mechanical Engineering Department, National Technical University of Athens, Athens, Greece
| | | | - S Samara
- Department of Genetics & Biotechnology, Faculty of Biology, National and Kapodistrian University of Athens, Athens, Greece
| | - A Mitsos
- AVT Process Systems Engineering (SVT), RWTH Aachen University, Aachen, Germany
| | - Z Dailiana
- Department of Orthopaedic Surgery, University of Thessalia, Larissa, Greece
| | - P Kollia
- Department of Genetics & Biotechnology, Faculty of Biology, National and Kapodistrian University of Athens, Athens, Greece
| | - L G Alexopoulos
- Mechanical Engineering Department, National Technical University of Athens, Athens, Greece.
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Gawri R, Rosenzweig DH, Krock E, Ouellet JA, Stone LS, Quinn TM, Haglund L. High mechanical strain of primary intervertebral disc cells promotes secretion of inflammatory factors associated with disc degeneration and pain. Arthritis Res Ther 2014; 16:R21. [PMID: 24457003 PMCID: PMC3979109 DOI: 10.1186/ar4449] [Citation(s) in RCA: 112] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2013] [Accepted: 01/13/2014] [Indexed: 02/02/2023] Open
Abstract
Introduction Excessive mechanical loading of intervertebral discs (IVDs) is thought to alter matrix properties and influence disc cell metabolism, contributing to degenerative disc disease and development of discogenic pain. However, little is known about how mechanical strain induces these changes. This study investigated the cellular and molecular changes as well as which inflammatory receptors and cytokines were upregulated in human intervertebral disc cells exposed to high mechanical strain (HMS) at low frequency. The impact of these metabolic changes on neuronal differentiation was also explored to determine a role in the development of disc degeneration and discogenic pain. Methods Isolated human annulus fibrosus (AF) and nucleus pulposus (NP) cells were exposed to HMS (20% cyclical stretch at 0.001 Hz) on high-extension silicone rubber dishes coupled to a mechanical stretching apparatus and compared to static control cultures. Gene expression of Toll-like receptors (TLRs), neuronal growth factor (NGF) and tumour necrosis factor α (TNFα) was assessed. Collected conditioned media were analysed for cytokine content and applied to rat pheocromocytoma PC12 cells for neuronal differentiation assessment. Results HMS caused upregulation of TLR2, TLR4, NGF and TNFα gene expression in IVD cells. Medium from HMS cultures contained elevated levels of growth-related oncogene, interleukin 6 (IL-6), IL-8, IL-15, monocyte chemoattractant protein 1 (MCP-1), MCP-3, monokine induced by γ interferon, transforming growth factor β1, TNFα and NGF. Exposure of PC12 cells to HMS-conditioned media resulted in both increased neurite sprouting and cell death. Conclusions HMS culture of IVD cells in vitro drives cytokine and inflammatory responses associated with degenerative disc disease and low-back pain. This study provides evidence for a direct link between cellular strain, secretory factors, neoinnervation and potential degeneration and discogenic pain in vivo.
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Bédouet L, Pascale F, Bonneau M, Laurent A. In vitro evaluation of S-(+)-ibuprofen as drug candidate for intra-articular drug delivery system. Drug Dev Ind Pharm 2013; 41:85-94. [PMID: 24168233 DOI: 10.3109/03639045.2013.850704] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Intra-articular drug delivery systems (DDSs) are envisaged as interesting alternative to locally release non-steroidal anti-inflammatory drugs (NSAIDs) such as ibuprofen to reduce pain in patients with osteoarthritis. The present study examines the efficacy of S-(+)-ibuprofen on cartilage degradation as drug candidate for DDS loading. Humeral cartilage and joint capsule explants were collected from healthy sheep shoulder joints and they were cultured in mono- or in co-culture for 13 days with LPS in combination with S-(+)-ibuprofen at 50 µM and 1 mM. S-(+)-ibuprofen (50 µM) blocked prostaglandins production in LPS-activated explants but did not reduce cartilage degradation. By contrast, 1 mM S-(+)-ibuprofen treatment of cartilage explants reduced nitric oxide synthesis by 51% (p = 0.0072), proteoglycans degradation by 35% (p = 0.0114) and expression of serum amyloid protein - the main protein induced upon LPS challenge - by 44% (p < 0.0001). On contrary, in presence of synovial membrane, the protective effects of S-(+)-ibuprofen on cartilage damages were significantly diminished. At 1mM, S-(+)-ibuprofen reduced the cell lysis during culture of cartilage and joint capsule either in mono- or in co-culture. This study performed on sheep explants shows that 1 mM S-(+)-ibuprofen inhibited cartilage degradation via a mechanism independent of cyclooxygenase inhibition. Reduction of prostaglandins synthesis at 50 µM in all treatment groups and reduction of cartilage degradation observed at 1 mM suggest that S-(+)-ibuprofen could be considered as a promising drug candidate for the loading of intra-articular DDS.
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Alsalameh RJ, Casey RC, Mollenhauer J, Kalden JR, Burmester GR, Alsalameh SM. Induction of proliferation and pro-inflammatory cytokine production in rheumatoid arthritis peripheral blood mononuclear cells by a 65 KDa chondrocyte membrane-specific, constitutive target autoantigen (CH65). Int J Rheum Dis 2013; 20:1132-1141. [PMID: 24131486 DOI: 10.1111/1756-185x.12167] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
OBJECTIVE To analyze proliferation and pro-inflammatory cytokine production of peripheral blood mononuclear cells (PBMC) from rheumatoid arthritis (RA) patients following stimulation with a purified chondrocyte membrane-associated autoantigen (CH65). METHODS CH65 was highly purified from bovine chondrocyte membranes by solubilization and ion exchange chromatography. PBMC of RA patients (n = 37; 28 seropositive, nine seronegative) and non-arthritic donors (n = 20) were isolated by ficoll centrifugation and used in cell proliferation assays. The levels of interleukin (IL)-1, tumo necrosis factor (TNF) and IL-6 produced after stimulation with CH65 were determined by enzyme-linked immunosorbent assay (ELISA). Statistical analysis was performed using Mann-Whitney U-test and Spearman rank test and the software SPSS 13.0TM (SPSS Inc.; Chicago, IL, USA). RESULTS Peripheral blood mononuclear cells exhibited a strong proliferative response to purified CH65 in approximately 50% of the RA patients (seropositive > seronegative), with a maximum reactivity at 0.15 or 0.30 μg/mL culture medium. In contrast, PBMC from normal donors did not show a proliferative response to CH65 at any dose. The proliferative response in RA patients peaked at days 7-9 and returned to control levels at day 13, indicating an antigen-driven process. CH65-stimulated RA PBMC produced moderate to high amounts of IL-1, TNF and IL-6. This was comparable to the response after exposure to isolated whole chondrocyte membranes or purified collagen type II. CONCLUSION These results demonstrate a significant cellular immune response to CH65 protein in RA patients. Given the high similarity between bovine and human CH65, the results suggest a pathogenetic involvement of this molecule as a cartilage-specific potential target autoantigen in RA.
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Affiliation(s)
- Rayya J Alsalameh
- Institute of Clinical Microbiology and Hospital Hygiene, University Hospital Erlangen, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Rachael C Casey
- Department of Biochemistry, Rush University Medical Center, Chicago, Illinois, USA
| | - Jürgen Mollenhauer
- Department of Biochemistry, Rush University Medical Center, Chicago, Illinois, USA
| | - Joachim R Kalden
- Department of Medicine III, Institute for Clinical Immunology and Rheumatology, University of Erlangen-Nuremberg, Erlangen, Germany
| | - Gerd R Burmester
- Department of Internal Medicine, Rheumatology and Clinical Immunology, Charite Centre for Internal Medicine and Dermatology, Charite-Universitätsmedizin Berlin, Berlin, Germany
| | - Saifeddin M Alsalameh
- Department of Medicine III, Institute for Clinical Immunology and Rheumatology, University of Erlangen-Nuremberg, Erlangen, Germany.,Division of Rheumatology and Immunology, Department of Medicine, Tawam Hospital, Al Ain, Abu Dhabi, UAE
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Peffers MJ, Beynon RJ, Clegg PD. Absolute quantification of selected proteins in the human osteoarthritic secretome. Int J Mol Sci 2013; 14:20658-81. [PMID: 24132152 PMCID: PMC3821636 DOI: 10.3390/ijms141020658] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2013] [Revised: 08/19/2013] [Accepted: 09/23/2013] [Indexed: 12/27/2022] Open
Abstract
Osteoarthritis (OA) is characterized by a loss of extracellular matrix which is driven by catabolic cytokines. Proteomic analysis of the OA cartilage secretome enables the global study of secreted proteins. These are an important class of molecules with roles in numerous pathological mechanisms. Although cartilage studies have identified profiles of secreted proteins, quantitative proteomics techniques have been implemented that would enable further biological questions to be addressed. To overcome this limitation, we used the secretome from human OA cartilage explants stimulated with IL-1β and compared proteins released into the media using a label-free LC-MS/MS-based strategy. We employed QconCAT technology to quantify specific proteins using selected reaction monitoring. A total of 252 proteins were identified, nine were differentially expressed by IL-1 β stimulation. Selected protein candidates were quantified in absolute amounts using QconCAT. These findings confirmed a significant reduction in TIMP-1 in the secretome following IL-1β stimulation. Label-free and QconCAT analysis produced equivocal results indicating no effect of cytokine stimulation on aggrecan, cartilage oligomeric matrix protein, fibromodulin, matrix metalloproteinases 1 and 3 or plasminogen release. This study enabled comparative protein profiling and absolute quantification of proteins involved in molecular pathways pertinent to understanding the pathogenesis of OA.
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Affiliation(s)
- Mandy J. Peffers
- Department of Musculoskeletal Biology, Institute of Ageing and Chronic Disease, University of Liverpool, Leahurst, Chester High Road, Neston, Cheshire, CH64 7TE, UK; E-Mail:
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +44-151-795-6006; Fax: +44-151-795-6101
| | - Robert J. Beynon
- Protein Function Group, Institute of Integrative Biology, University of Liverpool, Biosciences Building, Crown Street, Liverpool, L69 7ZB, UK; E-Mail:
| | - Peter D. Clegg
- Department of Musculoskeletal Biology, Institute of Ageing and Chronic Disease, University of Liverpool, Leahurst, Chester High Road, Neston, Cheshire, CH64 7TE, UK; E-Mail:
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The expression and regulation of matrix metalloproteinase-3 is critically modulated by Porphyromonas gingivalis lipopolysaccharide with heterogeneous lipid A structures in human gingival fibroblasts. BMC Microbiol 2013; 13:73. [PMID: 23548063 PMCID: PMC3623786 DOI: 10.1186/1471-2180-13-73] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2012] [Accepted: 03/15/2013] [Indexed: 12/31/2022] Open
Abstract
Background Porphyromonas gingivalis lipopolysaccharide (LPS) is a crucial virulence factor strongly associated with chronic periodontitis which is the primary cause of tooth loss in adults. It exhibits remarkable heterogeneity containing tetra-(LPS1435/1449) and penta-(LPS1690) acylated lipid A structures. Human gingival fibroblasts (HGFs) as the main resident cells of human gingiva play a key role in regulating matrix metalloproteinases (MMPs) and contribute to periodontal homeostasis. This study investigated the expression and regulation of MMPs1-3 and tissue inhibitors of MMP-1 (TIMP-1) in HGFs in response to P. gingivalis LPS1435/1449 and LPS1690 and hexa-acylated E. coli LPS as a reference. The expression of MMPs 1–3 and TIMP-1 was evaluated by real-time PCR and ELISA. Results The MMP-3 mRNA and protein were highly upregulated in P. gingivalis LPS1690- and E. coli LPS-treated cells, whereas no induction was observed in P. gingivalis LPS1435/1449-treated cells. On the contrary, the expression of MMP-1 and −2 was not significantly affected by P. gingivalis LPS lipid A heterogeneity. The TIMP-1 mRNA was upregulated in P. gingivalis LPS1435/1449- and E. coli LPS-treated cells. Next, signal transduction pathways involved in P. gingivalis LPS-induced expression of MMP-3 were examined by blocking assays. Blockage of p38 MAPK and ERK significantly inhibited P. gingivalis LPS1690-induced MMP-3 expression in HGFs. Conclusion The present findings suggest that the heterogeneous lipid A structures of P. gingivalis LPS differentially modulate the expression of MMP-3 in HGFs, which may play a role in periodontal pathogenesis.
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Ashwell MS, Gonda MG, Gray K, Maltecca C, O'Nan AT, Cassady JP, Mente PL. Changes in chondrocyte gene expression following in vitro impaction of porcine articular cartilage in an impact injury model. J Orthop Res 2013; 31:385-91. [PMID: 23027577 PMCID: PMC3553272 DOI: 10.1002/jor.22239] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/09/2011] [Accepted: 08/31/2012] [Indexed: 02/04/2023]
Abstract
Our objective was to monitor chondrocyte gene expression at 0, 3, 7, and 14 days following in vitro impaction to the articular surface of porcine patellae. Patellar facets were either axially impacted with a cylindrical impactor (25 mm/s loading rate) to a load level of 2,000 N or not impacted to serve as controls. After being placed in organ culture for 0, 3, 7, or 14 days, total RNA was isolated from full thickness cartilage slices and gene expression measured for 17 genes by quantitative real-time RT-PCR. Targeted genes included those encoding proteins involved with biological stress, inflammation, or anabolism and catabolism of cartilage extracellular matrix. Some gene expression changes were detected on the day of impaction, but most significant changes occurred at 14 days in culture. At 14 days in culture, 10 of the 17 genes were differentially expressed with col1a1 most significantly up-regulated in the impacted samples, suggesting impacted chondrocytes may have reverted to a fibroblast-like phenotype.
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Affiliation(s)
- Melissa S. Ashwell
- Animal Science Department, North Carolina State University, Raleigh, NC, USA
| | - Michael G. Gonda
- Animal Science Department, North Carolina State University, Raleigh, NC, USA
| | - Kent Gray
- Animal Science Department, North Carolina State University, Raleigh, NC, USA
| | - Christian Maltecca
- Animal Science Department, North Carolina State University, Raleigh, NC, USA
| | - Audrey T. O'Nan
- Animal Science Department, North Carolina State University, Raleigh, NC, USA
| | - Joseph P. Cassady
- Animal Science Department, North Carolina State University, Raleigh, NC, USA
| | - Peter L. Mente
- Joint Department of Biomedical Engineering, North Carolina State University, Raleigh, NC, USA and University of North Carolina, Chapel Hill, NC, USA
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Endotoxins affect bioactivity of chitosan derivatives in cultures of bone marrow-derived human mesenchymal stem cells. Acta Biomater 2013; 9:4771-8. [PMID: 22947323 DOI: 10.1016/j.actbio.2012.08.043] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2012] [Revised: 08/27/2012] [Accepted: 08/28/2012] [Indexed: 01/14/2023]
Abstract
Biomaterials research has been expanding over the last decade, in part to provide improved medical devices for the treatment of orthopedic tissue injuries. In the quest to provide the best performance combined with low cost for medical implants, an increasing number of non-chemists have entered the field of biomaterials research without the profound knowledge of chemistry needed to understand the complex interaction mechanisms and characteristics of natural substances. Likewise, non-biologists often lack understanding when it comes to the presence of the contaminating biota frequently found in natural substances. This lack of knowledge by researchers in the field, combined with sensitive in vitro cell-based assays, can lead to inaccurate evaluation of biomaterials. Hence, there should be both an active effort to assemble multi-disciplinary teams and a genuine concern for the possible effects of contamination on in vitro assays. Here, we show that the presence of bacterial endotoxins in chitosan derivatives can result in false-positive results, profoundly altering product performance in in vitro assays. False-positive results through uncritical use of natural substances in vitro can be avoided by proper endotoxin testing and careful evaluation of cytokine secretion patterns.
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Human YKL-39 is a pseudo-chitinase with retained chitooligosaccharide-binding properties. Biochem J 2012; 446:149-57. [PMID: 22742450 DOI: 10.1042/bj20120377] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The chitinase-like proteins YKL-39 (chitinase 3-like-2) and YKL-40 (chitinase 3-like-1) are highly expressed in a number of human cells independent of their origin (mesenchymal, epithelial or haemapoietic). Elevated serum levels of YKL-40 have been associated with a negative outcome in a number of diseases ranging from cancer to inflammation and asthma. YKL-39 expression has been associated with osteoarthritis. However, despite the reported association with disease, the physiological or pathological role of these proteins is still very poorly understood. Although YKL-39 is homologous to the two family 18 chitinases in the human genome, it has been reported to lack any chitinase activity. In the present study, we show that human YKL-39 possesses a chitinase-like fold, but lacks key active-site residues required for catalysis. A glycan screen identified oligomers of N-acetylglucosamine as preferred binding partners. YKL-39 binds chitooligosaccharides and a newly synthesized derivative of the bisdionin chitinase-inhibitor class with micromolar affinity, through a number of conserved tryptophan residues. Strikingly, the chitinase activity of YKL-39 was recovered by reverting two non-conservative substitutions in the active site to those found in the active enzymes, suggesting that YKL-39 is a pseudo-chitinase with retention of chitinase-like ligand-binding properties.
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Goldring MB. Chondrogenesis, chondrocyte differentiation, and articular cartilage metabolism in health and osteoarthritis. Ther Adv Musculoskelet Dis 2012; 4:269-85. [PMID: 22859926 PMCID: PMC3403254 DOI: 10.1177/1759720x12448454] [Citation(s) in RCA: 294] [Impact Index Per Article: 24.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
Chondrogenesis occurs as a result of mesenchymal cell condensation and chondroprogenitor cell differentiation. Following chondrogenesis, the chondrocytes remain as resting cells to form the articular cartilage or undergo proliferation, terminal differentiation to chondrocyte hypertrophy, and apoptosis in a process termed endochondral ossification, whereby the hypertrophic cartilage is replaced by bone. Human adult articular cartilage is a complex tissue of matrix proteins that varies from superficial to deep layers and from loaded to unloaded zones. A major challenge to efforts to repair cartilage by stem cell-based and other tissue-engineering strategies is the inability of the resident chondrocytes to lay down a new matrix with the same properties as it had when it was formed during development. Thus, understanding and comparing the mechanisms of cartilage remodeling during development, osteoarthritis (OA), and aging may lead to more effective strategies for preventing cartilage damage and promoting repair. The pivotal proteinase that marks OA progression is matrix metalloproteinase 13 (MMP-13), the major type II collagen-degrading collagenase, which is regulated by both stress and inflammatory signals. We and other investigators have found that there are common mediators of these processes in human OA cartilage. We also observe temporal and spatial expression of these mediators in early through late stages of OA in mouse models and are analyzing the consequences of knockout or transgenic overexpression of critical genes. Since the chondrocytes in adult human cartilage are normally quiescent and maintain the matrix in a low turnover state, understanding how they undergo phenotypic modulation and promote matrix destruction and abnormal repair in OA may to lead to identification of critical targets for therapy to block cartilage damage and promote effective cartilage repair.
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Affiliation(s)
- Mary B Goldring
- Hospital for Special Surgery, Caspary Research Building, 5th Floor, 535 East 70th Street, New York, NY 10021, USA
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Poly(I:C) treatment influences the expression of calreticulin and profilin-1 in a human HNSCC cell line: a proteomic study. Tumour Biol 2012; 33:1201-8. [PMID: 22415225 DOI: 10.1007/s13277-012-0366-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2011] [Accepted: 02/15/2012] [Indexed: 12/15/2022] Open
Abstract
Polyinosinic:polycytidylic acid (poly (I:C)) has been formerly known to be an interferon inducer but the mechanism of its action was not revealed until the discovery of Toll-like receptors (TLRs). TLRs are members of transmembrane proteins that recognize conserved molecular motifs of viral and bacterial origin and initiate innate immune response. Recent studies have shown that they are also expressed on tumor cells, but their role in these cells is still not clear. TLR3 recognizes double-stranded RNA (poly (I:C)) and is primarily involved in the defense against viruses. TLR3 ligand binding initiates the activation of transcription factors NF-κB, IRF family members, and AP-1, which can induce wide cascading effect on the cell and consequently activate many cellular processes. Since little is known about TLR3 target genes, we have used the proteomic approach to widen the current knowledge. In this study, we have discovered 15 differentially expressed proteins, mostly connected with protein metabolic processes. Furthermore, we have confirmed by Western blot that calreticulin and profilin-1, proteins which have been shown previously to be involved in processes connected with tumor progression, are differentially expressed after poly(I:C) treatment. By using TLR3 small interfering RNA, we showed that calreticulin expression might be TLR3 dependent, unlike profilin-1.
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Gharbi M, Deberg M, Henrotin Y. Application for proteomic techniques in studying osteoarthritis: a review. Front Physiol 2011; 2:90. [PMID: 22144964 PMCID: PMC3228966 DOI: 10.3389/fphys.2011.00090] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2011] [Accepted: 11/11/2011] [Indexed: 01/12/2023] Open
Abstract
After the genomic era, proteomic corresponds to a wide variety of techniques that study the protein content of cells, tissue, or organism and that allow the isolation of protein of interest. It offers the choice between gel-based and gel-free methods or shotgun proteomics. Applications of proteomic technology may concern three principal objectives in several biomedical or clinical domains of research as in osteoarthritis: (i) to understand the physiopathology or underlying mechanisms leading to a disease or associated with a particular model, (ii), to find disease-specific biomarker, and (iii) to identify new therapeutic targets. This review aimed at gathering most of the data regarding the proteomic techniques and their applications to osteoarthritis research. It also reported technical limitations and solutions, as for example for sample preparation. Proteomics open wide perspectives in biochemical research but many technical matters still remain to be solved.
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Skalnikova H, Motlik J, Gadher SJ, Kovarova H. Mapping of the secretome of primary isolates of mammalian cells, stem cells and derived cell lines. Proteomics 2011; 11:691-708. [PMID: 21241017 DOI: 10.1002/pmic.201000402] [Citation(s) in RCA: 151] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2010] [Revised: 09/14/2010] [Accepted: 09/20/2010] [Indexed: 01/09/2023]
Abstract
Within a mammalian organism, the interaction among cells both at short and long distances is mediated by soluble factors released by cells into the extracellular environment. The secreted proteins may involve extracellular matrix proteins, proteinases, growth factors, protein hormones, immunoregulatory cytokines, chemokines or other bioactive molecules that have a direct impact on target cell phenotype. Stem cells of mesenchymal, adipose, neural and embryonic origin, fibroblast feeder cells as well as primary isolates of astrocytes, endothelial and muscle cells have recently become targets of intensive secretome profiling with the search for proteins regulating cell survival, proliferation, differentiation or inflammatory response. Recent advances and challenges of the stem cell and primary cell secretome analysis together with the most relevant results are discussed in this review.
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Affiliation(s)
- Helena Skalnikova
- Institute of Animal Physiology and Genetics, Academy of Sciences of the Czech Republic, Libechov, Czech Republic
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Biswas B, Yenugu S. Antimicrobial responses in the male reproductive tract of lipopolysaccharide challenged rats. Am J Reprod Immunol 2010; 65:557-68. [PMID: 21199063 DOI: 10.1111/j.1600-0897.2010.00937.x] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
PROBLEM Innate immune machinery including the Toll-like receptors (TLRs) confers the first line of defense mechanisms to counter pathogenic microorganisms that enter the body. The male reproductive tract is vulnerable to infection and the role of TLRs and the antimicrobial responses that operate to counter infections in this organ system are poorly understood. METHOD OF STUDY Caput and cauda epididymides, testes and seminal vesicles were collected at 0, 3, 6, 9, 12, 15 and 24 h from rats injected intraperitoneally with a single dose of LPS. Plasma testosterone was measured using ELISA. Expression pattern of defensins and Spag11 isoforms were analysed using RT-PCR. Immunohistochemical analyses was performed to determine SPAG11E protein expression following LPS treatment. RESULTS We provide the first line of evidence that the male reproductive tract induces the expression of Sperm Associated Antigen 11 (Spag11) mRNA variants and defensins when challenged with lipopolysaccharide (LPS) with a concomitant increase in protein expression. However, there was an inverse relationship between induction of antimicrobial gene expression and plasma testosterone. An increase in the mRNA levels of proinflammatory cytokines was observed parallel to the induction of Spag11 variants and majority of defensin expression in the male reproductive tract. CONCLUSION The increase in Spag11 and defensin mRNA in response to LPS administration demonstrates their importance in protecting the male reproductive tract during infection. Results of this study help to understand male reproductive tract innate immune defense mechanisms and to design novel peptide antibiotics to prevent sexually transmitted diseases.
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Affiliation(s)
- Barnali Biswas
- Department of Animal Sciences, University of Hyderabad, Hyderabad, Andhra Pradesh, India
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Polacek M, Bruun JA, Elvenes J, Figenschau Y, Martinez I. The secretory profiles of cultured human articular chondrocytes and mesenchymal stem cells: implications for autologous cell transplantation strategies. Cell Transplant 2010; 20:1381-93. [PMID: 21176404 DOI: 10.3727/096368910x550215] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
This study was undertaken to compare the phenotype of human articular chondrocytes (ACs) and bone marrow-derived mesenchymal stem cells (MSCs) after cell expansion by studying the spectrum of proteins secreted by cells into the culture medium. ACs and MSCs were expanded in monolayer cultures for some weeks, as done in standard cell transplantation procedures. Initially, the expression of cartilage signature genes was compared by real-time PCR. Metabolic labeling of proteins (SILAC) in combination with mass spectrometry (LC/MS-MS) was applied to investigate differences in released proteins. In addition, multiplex assays were carried out to quantify the amounts of several matrix metalloproteases (MMPs) and their natural inhibitors (TIMPs). Expanded chondrocytes showed a slightly higher expression of cartilage-specific genes than MSCs, whereas the overall spectra of released proteins were very similar for the two cell types. In qualitative terms MSCs seemed to secrete similar number of extracellular matrix proteins (43% vs. 45% of total proteins found) and catabolic agents (9% vs. 10%), and higher number of anabolic agents (12 % vs. 7%) compared to ACs. Some matrix-regulatory agents such as serpins, BMP-1, and galectins were detected only in MSC supernatants. Quantitative analyses of MMPs and TIMPs revealed significantly higher levels of MMP-1, MMP-2, MMP-3, and MMP-7 in the medium of ACs. Our data show that after the expansion phase, both ACs and MSCs express a dedifferentiated phenotype, resembling each other. ACs hold a phenotype closer to native cartilage at the gene expression level, whereas MSCs show a more anabolic profile by looking at the released proteins pattern. Our data together with the inherent capability of MSCs to maintain their differentiation potential for longer cultivation periods would favor the use of these cells for cartilage reconstruction.
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Affiliation(s)
- Martin Polacek
- Orthopaedic Surgery Department, University Hospital of North Norway, Tromsø, Norway
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Juang YM, Lee CY, Hsu WY, Lin CT, Lai CC, Tsai FJ. Proteomic analysis of chondrocytes exposed to pressure. Biomed Chromatogr 2010; 24:1273-82. [DOI: 10.1002/bmc.1436] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Pope MR, Hoffman SM, Tomlinson S, Fleming SD. Complement regulates TLR4-mediated inflammatory responses during intestinal ischemia reperfusion. Mol Immunol 2010; 48:356-64. [PMID: 20800895 DOI: 10.1016/j.molimm.2010.07.004] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2010] [Revised: 06/16/2010] [Accepted: 07/05/2010] [Indexed: 11/26/2022]
Abstract
Innate immune responses including TLR4 and complement activation are required for mesenteric ischemia/reperfusion (IR)-induced tissue damage. We examined the regulation of TLR4 and complement activation in a mouse model of intestinal IR. Intestinal IR-induced C3 deposition in a TLR4 dependent manner. In addition, in wild-type but not TLR4 deficient mice, IR significantly increased C3 and Factor B (FB) mRNA expression within the intestine. To further examine the role of TLR4 and complement, we administered the complement inhibitor, CR2-Crry, to target local complement activation in wild-type C57Bl/10, and TLR4 deficient B10/ScN mice. TLR4 deficient mice sustained less damage and inflammation after IR than wild-type mice, but administration of CR2-Crry did not further reduce tissue damage. In contrast, CR2-Crry treatment of wild-type mice was accompanied by a reduction in complement activation and in C3 and FB transcription in response to IR. CR2-Crry also significantly decreased intestinal IL-6 and IL-12p40 production in both the wild-type and TLR4 deficient mice. These data indicate that TLR4 regulates extrahepatic complement production while complement regulates TLR4-mediated cytokine production during intestinal IR.
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Affiliation(s)
- Michael R Pope
- Division of Biology, Kansas State University, Manhattan, KS 66506, USA
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Mayer-Wagner S, Ernst J, Maier M, Chiquet M, Joos H, Müller PE, Jansson V, Sievers B, Hausdorf J. The effect of high-energy extracorporeal shock waves on hyaline cartilage of adult rats in vivo. J Orthop Res 2010; 28:1050-6. [PMID: 20135673 DOI: 10.1002/jor.21074] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
The aim of this study was to determine if extracorporeal shock wave therapy (ESWT) in vivo affects the structural integrity of articular cartilage. A single bout of ESWT (1500 shock waves of 0.5 mJ/mm(2)) was applied to femoral heads of 18 adult Sprague-Dawley rats. Two sham-treated animals served as controls. Cartilage of each femoral head was harvested at 1, 4, or 10 weeks after ESWT (n = 6 per treatment group) and scored on safranin-O-stained sections. Expression of tenascin-C and chitinase 3-like protein 1 (Chi3L1) was analyzed by immunohistochemistry. Quantitative real-time polymerase chain reaction (PCR) was used to examine collagen (II)alpha(1) (COL2A1) expression and chondrocyte morphology was investigated by transmission electron microscopy no changes in Mankin scores were observed after ESWT. Positive immunostaining for tenascin-C and Chi3L1 was found up to 10 weeks after ESWT in experimental but not in control cartilage. COL2A1 mRNA was increased in samples 1 and 4 weeks after ESWT. Alterations found on the ultrastructural level showed expansion of the rough-surfaced endoplasmatic reticulum, detachment of the cell membrane and necrotic chondrocytes. Extracorporeal shock waves caused alterations of hyaline cartilage on a molecular and ultrastructural level that were distinctly different from control. Similar changes were described before in the very early phase of osteoarthritis (OA). High-energy ESWT might therefore cause degenerative changes in hyaline cartilage as they are found in initial OA.
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Affiliation(s)
- Susanne Mayer-Wagner
- Department of Orthopaedic Surgery, Klinikum Grosshadern, Ludwig-Maximilians-University Munich, Marchioninistr. 15, 81377 Munich, Germany. . de
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