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Ma Z, Li DX, Lan X, Bubelenyi A, Vyhlidal M, Kunze M, Sommerfeldt M, Adesida AB. Short-term response of primary human meniscus cells to simulated microgravity. Cell Commun Signal 2024; 22:342. [PMID: 38907358 PMCID: PMC11191296 DOI: 10.1186/s12964-024-01684-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2024] [Accepted: 05/27/2024] [Indexed: 06/23/2024] Open
Abstract
BACKGROUND Mechanical unloading of the knee articular cartilage results in cartilage matrix atrophy, signifying the osteoarthritic-inductive potential of mechanical unloading. In contrast, mechanical loading stimulates cartilage matrix production. However, little is known about the response of meniscal fibrocartilage, a major mechanical load-bearing tissue of the knee joint, and its functional matrix-forming fibrochondrocytes to mechanical unloading events. METHODS In this study, primary meniscus fibrochondrocytes isolated from the inner avascular region of human menisci from both male and female donors were seeded into porous collagen scaffolds to generate 3D meniscus models. These models were subjected to both normal gravity and mechanical unloading via simulated microgravity (SMG) for 7 days, with samples collected at various time points during the culture. RESULTS RNA sequencing unveiled significant transcriptome changes during the 7-day SMG culture, including the notable upregulation of key osteoarthritis markers such as COL10A1, MMP13, and SPP1, along with pathways related to inflammation and calcification. Crucially, sex-specific variations in transcriptional responses were observed. Meniscus models derived from female donors exhibited heightened cell proliferation activities, with the JUN protein involved in several potentially osteoarthritis-related signaling pathways. In contrast, meniscus models from male donors primarily regulated extracellular matrix components and matrix remodeling enzymes. CONCLUSION These findings advance our understanding of sex disparities in knee osteoarthritis by developing a novel in vitro model using cell-seeded meniscus constructs and simulated microgravity, revealing significant sex-specific molecular mechanisms and therapeutic targets.
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Affiliation(s)
- Zhiyao Ma
- Department of Surgery, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, T6G 2R3, Canada
| | - David Xinzheyang Li
- Department of Surgery, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, T6G 2R3, Canada
- Department of Civil and Environmental Engineering, Faculty of Engineering, AB, University of Alberta, Edmonton, T6G 2R3, Canada
| | - Xiaoyi Lan
- Department of Surgery, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, T6G 2R3, Canada
| | - Adam Bubelenyi
- Faculty of Science, AB, University of Alberta, Edmonton, T6G 2R3, Canada
| | - Margaret Vyhlidal
- Department of Surgery, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, T6G 2R3, Canada
| | - Melanie Kunze
- Department of Surgery, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, T6G 2R3, Canada
| | - Mark Sommerfeldt
- Department of Surgery, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, T6G 2R3, Canada
| | - Adetola B Adesida
- Department of Surgery, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, T6G 2R3, Canada.
- Department of Mechanical Engineering, Faculty of Engineering, University of Alberta, Edmonton, AB, T6G 2R3, Canada.
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Luo H, Li L, Han S, Liu T. The role of monocyte/macrophage chemokines in pathogenesis of osteoarthritis: A review. Int J Immunogenet 2024; 51:130-142. [PMID: 38462560 DOI: 10.1111/iji.12664] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2023] [Revised: 02/08/2024] [Accepted: 02/22/2024] [Indexed: 03/12/2024]
Abstract
Osteoarthritis (OA) is one of the most common degenerative diseases characterised by joint pain, swelling and decreased mobility, with its main pathological features being articular synovitis, cartilage degeneration and osteophyte formation. Inflammatory cytokines and chemokines secreted by activated immunocytes can trigger various inflammatory and immune responses in articular cartilage and synovium, contributing to the genesis and development of OA. A series of monocyte/macrophage chemokines, including monocyte chemotaxis protein (MCP)-1/CCL2, MCP2/CCL8, macrophage inflammatory protein (MIP)-1α/CCL3, MIP-1β/CCL4, MIP-3α/CCL20, regulated upon activation, normal T-cell expressed and secreted /CCL5, CCL17 and macrophage-derived chemokine/CCL22, was proven to transmit cell signals by binding to G protein-coupled receptors on recipient cell surface, mediating and promoting inflammation in OA joints. However, the underlying mechanism of these chemokines in the pathogenesis of OA remains still elusive. Here, published literature was reviewed, and the function and mechanisms of monocyte/macrophage chemokines in OA pathogenesis were summarised. The symptoms and disease progression of OA were found to be effectively alleviated when the expression of these chemokines is inhibited. Elucidating these mechanisms could contribute to further understand how OA develops and provide potential targets for the early diagnosis of arthritis and drug treatment to delay or even halt OA progression.
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Affiliation(s)
- Hao Luo
- Department of Orthopaedics, The People's Hospital Affiliated to Jiangsu University, Zhenjiang, Jiangsu, China
| | - Linfeng Li
- Department of Orthopaedics, The People's Hospital Affiliated to Jiangsu University, Zhenjiang, Jiangsu, China
| | - Song Han
- Department of Orthopaedics, The People's Hospital Affiliated to Jiangsu University, Zhenjiang, Jiangsu, China
| | - Tao Liu
- Department of Orthopaedics, The People's Hospital Affiliated to Jiangsu University, Zhenjiang, Jiangsu, China
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Epanomeritakis IE, Khan WS. Adipose-derived regenerative therapies for the treatment of knee osteoarthritis. World J Stem Cells 2024; 16:324-333. [PMID: 38690511 PMCID: PMC11056639 DOI: 10.4252/wjsc.v16.i4.324] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/17/2024] [Revised: 02/15/2024] [Accepted: 03/01/2024] [Indexed: 04/25/2024] Open
Abstract
Knee osteoarthritis is a degenerative condition with a significant disease burden and no disease-modifying therapy. Definitive treatment ultimately requires joint replacement. Therapies capable of regenerating cartilage could significantly reduce financial and clinical costs. The regenerative potential of mesenchymal stromal cells (MSCs) has been extensively studied in the context of knee osteoarthritis. This has yielded promising results in human studies, and is likely a product of immunomodulatory and chondroprotective biomolecules produced by MSCs in response to inflammation. Adipose-derived MSCs (ASCs) are becoming increasingly popular owing to their relative ease of isolation and high proliferative capacity. Stromal vascular fraction (SVF) and micro-fragmented adipose tissue (MFAT) are produced by the enzymatic and mechanical disruption of adipose tissue, respectively. This avoids expansion of isolated ASCs ex vivo and their composition of heterogeneous cell populations, including immune cells, may potentiate the reparative function of ASCs. In this editorial, we comment on a multicenter randomized trial regarding the efficacy of MFAT in treating knee osteoarthritis. We discuss the study's findings in the context of emerging evidence regarding adipose-derived regenerative therapies. An underlying mechanism of action of ASCs is proposed while drawing important distinctions between the properties of isolated ASCs, SVF, and MFAT.
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Affiliation(s)
- Ilias E Epanomeritakis
- Division of Trauma and Orthopaedic Surgery, Addenbrooke's Hospital, Cambridge University Hospitals NHS Foundation Trust, Cambridge CB2 0QQ, United Kingdom
| | - Wasim S Khan
- Division of Trauma and Orthopaedic Surgery, Department of Surgery, University of Cambridge, Cambridge CB2 0QQ, United Kingdom.
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4
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Vincent TL, Miller RE. Molecular pathogenesis of OA pain: Past, present, and future. Osteoarthritis Cartilage 2024; 32:398-405. [PMID: 38244717 PMCID: PMC10984780 DOI: 10.1016/j.joca.2024.01.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Revised: 01/05/2024] [Accepted: 01/16/2024] [Indexed: 01/22/2024]
Abstract
OBJECTIVE To provide a historical perspective and narrative review on research into the molecular pathogenesis of osteoarthritis pain. DESIGN PubMed databases were searched for combinations of "osteoarthritis", "pain" and "animal models" for papers that represented key phases in the history of osteoarthritis pain discovery research including epidemiology, pathology, imaging, preclinical modeling and clinical trials. RESULTS The possible anatomical sources of osteoarthritis pain were identified over 50 years ago, but relatively slow progress has been made in understanding the apparent disconnect between structural changes captured by radiography and symptom severity. Translationally relevant animal models of osteoarthritis have aided in our understanding of the structural and molecular drivers of osteoarthritis pain, including molecules such as nerve growth factor and C-C motif chemokine ligand 2. Events leading to persistent osteoarthritis pain appear to involve a two-step process involving changes in joint innervation, including neo-innervation of the articular cartilage, as well as sensitization at the level of the joint, dorsal root ganglion and central nervous system. CONCLUSIONS There remains a great need for the development of treatments to reduce osteoarthritis pain in patients. Harnessing all that we have learned over the past several decades is helping us to appreciate the important interaction between structural disease and pain, and this is likely to facilitate development of new disease modifying therapies in the future.
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Affiliation(s)
- Tonia L Vincent
- Centre for OA Pathogenesis Versus Arthritis, Kennedy Institute of Rheumatology, University of Oxford, Roosevelt Drive, OX3 7FY Oxford, UK.
| | - Rachel E Miller
- Division of Rheumatology and Chicago Center on Musculoskeletal Pain, Rush University Medical Center, Chicago, IL, USA.
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Timkovich AE, Holling GA, Afzali MF, Kisiday J, Santangelo KS. TLR4 antagonism provides short-term but not long-term clinical benefit in a full-depth cartilage defect mouse model. Connect Tissue Res 2024; 65:26-40. [PMID: 37898909 DOI: 10.1080/03008207.2023.2269257] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Accepted: 10/05/2023] [Indexed: 10/31/2023]
Abstract
PURPOSE/AIM Cartilage injury and subsequent osteoarthritis (OA) are debilitating conditions affecting millions worldwide. As there are no cures for these ailments, novel therapies are needed to suppress disease pathogenesis. Given that joint injuries are known to produce damage-associated molecular patterns (DAMPs), our central premise is that the Toll-like receptor 4 (TLR4) pathway is a principal driver in the early response to cartilage damage and subsequent pathology. We postulate that TLR4 activation is initiated/perpetuated by DAMPs released following joint damage. Thus, antagonism of the TLR4 pathway immediately after injury may suppress the development of joint surface defects. MATERIALS AND METHODS Two groups were utilized: (1) 8-week-old, male C57BL6 mice treated systemically with a known TLR4 antagonist and (2) mice injected with vehicle control. A full-depth cartilage lesion on the midline of the patellofemoral groove was created in the right knee of each mouse. The left knee was used as a sham surgery control. Gait changes were evaluated over 4 weeks using a quantitative gait analysis system. At harvest, knee joints were processed for pathologic assessment, Nanostring® transcript expression, and immunohistochemistry (IHC). RESULTS Short-term treatment with a TLR4 antagonist at 14-days significantly improved relevant gait parameters; improved cartilage metrics and modified Mankin scores were also seen. Additionally, mRNA expression and IHC showed reduced expression of inflammatory mediators in animals treated with the TLR4 antagonist. CONCLUSIONS Collectively, this work demonstrates that systemic treatment with a TLR4 antagonist is protective to further cartilage damage 14-days post-injury in a murine model of induced disease.
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Affiliation(s)
- Ariel E Timkovich
- Department of Microbiology, Immunology and Pathology, Colorado State University, Fort Collins, CO, USA
| | - G Aaron Holling
- Department of Microbiology, Immunology and Pathology, Colorado State University, Fort Collins, CO, USA
| | - Maryam F Afzali
- Department of Microbiology, Immunology and Pathology, Colorado State University, Fort Collins, CO, USA
| | - John Kisiday
- Department of Clinical Sciences, Colorado State University, Fort Collins, CO, USA
| | - Kelly S Santangelo
- Department of Microbiology, Immunology and Pathology, Colorado State University, Fort Collins, CO, USA
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Geraghty T, Obeidat AM, Ishihara S, Wood MJ, Li J, Lopes EBP, Scanzello CR, Griffin TM, Malfait AM, Miller RE. Age-Associated Changes in Knee Osteoarthritis, Pain-Related Behaviors, and Dorsal Root Ganglia Immunophenotyping of Male and Female Mice. Arthritis Rheumatol 2023; 75:1770-1780. [PMID: 37096632 PMCID: PMC10543384 DOI: 10.1002/art.42530] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2022] [Revised: 02/07/2023] [Accepted: 03/28/2023] [Indexed: 04/26/2023]
Abstract
OBJECTIVE Osteoarthritis (OA) is a leading cause of chronic pain, yet OA pain management remains poor. Age is the strongest predictor of OA development, and mechanisms driving OA pain are unclear. We undertook this study to characterize age-associated changes in knee OA, pain-related behaviors, and dorsal root ganglion (DRG) molecular phenotypes in mice of both sexes. METHODS Male or female C57BL/6 mice 6 or 20 months of age were evaluated for histopathologic knee OA, pain-related behaviors, and L3-L5 DRG immune characterization via flow cytometry. DRG gene expression in older mice and humans was also examined. RESULTS Male mice at 20 months of age had worse cartilage degeneration than 6-month-old mice. Older female mouse knees showed increased cartilage degeneration but to a lesser degree than those of male mice. Older mice of both sexes had worse mechanical allodynia, knee hyperalgesia, and grip strength compared to younger mice. For both sexes, DRGs from older mice showed decreased CD45+ cells and a significant increase in F4/80+ macrophages and CD11c+ dendritic cells. Older male mouse DRGs showed increased expression of Ccl2 and Ccl5, and older female mouse DRGs showed increased Cxcr4 and Ccl3 expression compared to 6-month-old mouse DRGs, among other differentially expressed genes. Human DRG analysis from 6 individuals >80 years of age revealed elevated CCL2 in men compared to women, whereas CCL3 was higher in DRGs from women. CONCLUSION We found that aging in male and female mice is accompanied by mild knee OA, mechanical sensitization, and changes to immune cell populations in the DRG, suggesting novel avenues for development of OA therapies.
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Affiliation(s)
- Terese Geraghty
- Department of Internal Medicine, Division of Rheumatology, Rush University Medical Center, Chicago, IL, USA
| | - Alia M. Obeidat
- Department of Internal Medicine, Division of Rheumatology, Rush University Medical Center, Chicago, IL, USA
| | - Shingo Ishihara
- Department of Internal Medicine, Division of Rheumatology, Rush University Medical Center, Chicago, IL, USA
| | - Matthew J. Wood
- Department of Internal Medicine, Division of Rheumatology, Rush University Medical Center, Chicago, IL, USA
| | - Jun Li
- Department of Internal Medicine, Division of Rheumatology, Rush University Medical Center, Chicago, IL, USA
| | | | - Carla R. Scanzello
- Department of Medicine, Division of Rheumatology, University of Pennsylvania, Philadelphia, PA, USA
- Translational Musculoskeletal Research Center, Corp. Michael J. Crescenz VA Medical Center, Philadelphia, PA
| | - Timothy M. Griffin
- Oklahoma Medical Research Foundation, Oklahoma City, OK, USA
- OKC Veterans Affairs Medical Center, Oklahoma City, OK, USA
| | - Anne-Marie Malfait
- Department of Internal Medicine, Division of Rheumatology, Rush University Medical Center, Chicago, IL, USA
| | - Rachel E. Miller
- Department of Internal Medicine, Division of Rheumatology, Rush University Medical Center, Chicago, IL, USA
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7
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Ramirez-Perez S, Vekariya R, Gautam S, Reyes-Perez IV, Drissi H, Bhattaram P. MyD88 dimerization inhibitor ST2825 targets the aggressiveness of synovial fibroblasts in rheumatoid arthritis patients. Arthritis Res Ther 2023; 25:180. [PMID: 37749630 PMCID: PMC10519089 DOI: 10.1186/s13075-023-03145-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2022] [Accepted: 08/23/2023] [Indexed: 09/27/2023] Open
Abstract
BACKGROUND Dimerization of the myeloid differentiation primary response 88 protein (MyD88) plays a pivotal role in the exacerbated response to innate immunity-dependent signaling in rheumatoid arthritis (RA). ST2825 is a highly specific inhibitor of MyD88 dimerization, previously shown to inhibit the pro-inflammatory gene expression in peripheral blood mononuclear cells from RA patients (RA PBMC). In this study, we elucidated the effect of disrupting MyD88 dimerization by ST2825 on the pathological properties of synovial fibroblasts from RA patients (RA SFs). METHODS RA SFs were treated with varying concentrations of ST2825 in the presence or absence of bacterial lipopolysaccharides (LPS) to activate innate immunity-dependent TLR signaling. The DNA content of the RA SFs was quantified by imaging cytometry to investigate the effect of ST2825 on different phases of the cell cycle and apoptosis. RNA-seq was used to assess the global response of the RA SF toward ST2825. The invasiveness of RA SFs in Matrigel matrices was measured in organoid cultures. SFs from osteoarthritis (OA SFs) patients and healthy dermal fibroblasts were used as controls. RESULTS ST2825 reduced the proliferation of SFs by arresting the cells in the G0/G1 phase of the cell cycle. In support of this finding, transcriptomic analysis by RNA-seq showed that ST2825 may have induced cell cycle arrest by primarily inhibiting the expression of critical cell cycle regulators Cyclin E2 and members of the E2F family transcription factors. Concurrently, ST2825 also downregulated the genes encoding for pain, inflammation, and joint catabolism mediators while upregulating the genes required for the translocation of nuclear proteins into the mitochondria and members of the mitochondrial respiratory complex 1. Finally, we demonstrated that ST2825 inhibited the invasiveness of RA SFs, by showing decreased migration of LPS-treated RA SFs in spheroid cultures. CONCLUSIONS The pathological properties of the RA SFs, in terms of their aberrant proliferation, increased invasiveness, upregulation of pain and inflammation mediators, and disruption of mitochondrial homeostasis, were attenuated by ST2825 treatment. Taken together with the previously reported anti-inflammatory effects of ST2825 in RA PBMC, this study strongly suggests that targeting MyD88 dimerization could mitigate both systemic and synovial pathologies in a variety of inflammatory arthritic diseases.
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Affiliation(s)
- Sergio Ramirez-Perez
- Department of Orthopaedics, Emory University School of Medicine, Atlanta, GA, 30322, USA.
- Department of Cell Biology, Emory University School of Medicine, Atlanta, GA, 30322, USA.
- Emory Musculoskeletal Institute, Emory University School of Medicine, Atlanta, GA, 30329, USA.
| | - Rushi Vekariya
- Department of Orthopaedics, Emory University School of Medicine, Atlanta, GA, 30322, USA
- Department of Cell Biology, Emory University School of Medicine, Atlanta, GA, 30322, USA
- Emory Musculoskeletal Institute, Emory University School of Medicine, Atlanta, GA, 30329, USA
| | - Surabhi Gautam
- Department of Orthopaedics, Emory University School of Medicine, Atlanta, GA, 30322, USA
- Department of Cell Biology, Emory University School of Medicine, Atlanta, GA, 30322, USA
- Emory Musculoskeletal Institute, Emory University School of Medicine, Atlanta, GA, 30329, USA
| | - Itzel Viridiana Reyes-Perez
- Department of Molecular Biology and Genomics, University Center for Health Science, University of Guadalajara, 44340, Guadalajara, Jalisco, Mexico
| | - Hicham Drissi
- Department of Orthopaedics, Emory University School of Medicine, Atlanta, GA, 30322, USA
- Department of Cell Biology, Emory University School of Medicine, Atlanta, GA, 30322, USA
- Emory Musculoskeletal Institute, Emory University School of Medicine, Atlanta, GA, 30329, USA
- Atlanta VA Medical Center, Decatur, GA, 30033, USA
| | - Pallavi Bhattaram
- Department of Orthopaedics, Emory University School of Medicine, Atlanta, GA, 30322, USA.
- Department of Cell Biology, Emory University School of Medicine, Atlanta, GA, 30322, USA.
- Emory Musculoskeletal Institute, Emory University School of Medicine, Atlanta, GA, 30329, USA.
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8
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Liu R, Zhou Y, Chen H, Xu H, Zuo M, Chen B, Wang H. Membrane vesicles from Lactobacillus johnsonii delay osteoarthritis progression via modulating macrophage glutamine synthetase/mTORC1 axis. Biomed Pharmacother 2023; 165:115204. [PMID: 37499456 DOI: 10.1016/j.biopha.2023.115204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Revised: 07/16/2023] [Accepted: 07/18/2023] [Indexed: 07/29/2023] Open
Abstract
AIMS The manipulation of macrophage recruitment and their shift in the M1/M2 ratio is a promising approach to mitigate osteoarthritis (OA). Nevertheless, the current clinical medication available for OA is only palliative and may result in undesirable outcomes. Hence, it is urgent to explore alternative disease-modifying drug supplement that are both safer and more effective in OA treatment, like probiotic and probiotic-derived membrane vesicles. METHODS The synovial inflammation and cartilage damage in collagenase-induced OA (CIOA) mice were observed using haematoxylin and eosin, saffron O-solid green and immunohistochemical staining. Bipedal balance test and open field test were conducted to determine the effectiveness of L. johnsonii-derived membrane vesicles (LJ-MVs) in reducing joint pain of CIOA mice. Additionally, Transwell, western blot, and immunological testing were used to examine the effect of LJ-MVs on macrophage migration and reprogramming. Furthermore, a 4D label-free proteomic analysis of LJ-MVs and their parent bacterium was performed, and the glutamine synthetase (GS)/mTORC1 axis in macrophage was verified by western blot. RESULTS L. johnsonii and its membrane vesicles, LJ-MVs, exhibit a novel ability to mitigate inflammation, cartilage damage, and pain associated with OA. This is achieved by their ability to impede macrophage migration, M1-like polarization, and inflammatory mediators secretion, while simultaneously promoting the M2/M1 ratio in synovial macrophages. The mechanism underlying this effect involves the modulation of macrophage GS/mTORC1 pathway, at least partially. SIGNIFICANCE Owing to their probiotic derivation, LJ-MVs will be a more dependable and potent disease-modifying drugs for the prevention and therapy of OA in the long run.
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Affiliation(s)
- Rangru Liu
- Key Laboratory of Tropical Translational Medicine of Ministry of Education, School of Tropical Medicine, Department of Spine Surgery of The First Affiliated Hospital, Hainan Medical University, Haikou, Hainan, China; Hainan Provincial Key Laboratory of R&D of Tropical Herbs, School of Pharmacy, Hainan Medical University, Haikou, Hainan, China
| | - Yue Zhou
- Key Laboratory of Tropical Translational Medicine of Ministry of Education, School of Tropical Medicine, Department of Spine Surgery of The First Affiliated Hospital, Hainan Medical University, Haikou, Hainan, China
| | - Huanxiong Chen
- Department of Spine Surgery, Hainan Province Clinical Medical Center, The First Affiliated Hospital of Hainan Medical University, Haikou, Hainan, China
| | - Haixia Xu
- Department of Spine Surgery, Hainan Province Clinical Medical Center, The First Affiliated Hospital of Hainan Medical University, Haikou, Hainan, China
| | - Min Zuo
- Key Laboratory of Tropical Translational Medicine of Ministry of Education, School of Tropical Medicine, Department of Spine Surgery of The First Affiliated Hospital, Hainan Medical University, Haikou, Hainan, China
| | - Bo Chen
- Hainan Provincial Key Laboratory of R&D of Tropical Herbs, School of Pharmacy, Hainan Medical University, Haikou, Hainan, China
| | - Hua Wang
- Key Laboratory of Tropical Translational Medicine of Ministry of Education, School of Tropical Medicine, Department of Spine Surgery of The First Affiliated Hospital, Hainan Medical University, Haikou, Hainan, China.
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Valerio MS, Pace WA, Dolan CP, Edwards JB, Janakiram NB, Potter BK, Dearth CL, Goldman SM. Development and characterization of an intra-articular fracture mediated model of post-traumatic osteoarthritis. J Exp Orthop 2023; 10:68. [PMID: 37400744 DOI: 10.1186/s40634-023-00625-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Accepted: 05/26/2023] [Indexed: 07/05/2023] Open
Abstract
PURPOSE This study aimed to develop and characterize a closed intra-articular fracture (IAF) mediated post-traumatic osteoarthritis (PTOA) model in rats to serve as a testbed for putative disease modifying interventions. METHODS Male rats were subject to a 0 Joule (J), 1 J, 3 J, or 5 J blunt-force impact to the lateral aspect of the knee and allowed to heal for 14 and 56 days. Micro-CT was performed at time of injury and at the specified endpoints to assess bone morphometry and bone mineral density measurements. Cytokines and osteochondral degradation markers were assayed from serum and synovial fluid via immunoassays. Histopathological analyses were performed on decalcified tissues and assessed for evidence of osteochondral degradation. RESULTS High-energy (5 J) blunt impacts consistently induced IAF to the proximal tibia, distal femur, or both while lower energy (1 J and 3 J) impacts did not. CCL2 was found to be elevated in the synovial fluid of rats with IAF at both 14- and 56-days post-injury while COMP and NTX-1 were upregulated chronically relative to sham controls. Histological analysis showed increased immune cell infiltration, increased osteoclasts and osteochondral degradation with IAF relative to sham. CONCLUSION Based on results from the current study, our data indicates that a 5 J blunt-forced impact adequately and consistently induces hallmark osteoarthritic changes to the articular surface and subchondral bone at 56 days after IAF. Marked development of PTOA pathobiology suggest this model will provide a robust testbed for screening putative disease modifying interventions that might be translated to the clinic for militarily relevant, high-energy joint injuries.
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Affiliation(s)
- Michael S Valerio
- Research and Surveillance Division DoD-VA Extremity Trauma and Amputation Center of Excellence, Bethesda, USA
- Department of Surgery, Uniformed Services University of the Health Sciences-Walter Reed National Military Medical Center, Bethesda, USA
| | - William A Pace
- Department of Biomedical Engineering, Vanderbilt University, Nashville, USA
| | - Connor P Dolan
- Research and Surveillance Division DoD-VA Extremity Trauma and Amputation Center of Excellence, Bethesda, USA
- Department of Surgery, Uniformed Services University of the Health Sciences-Walter Reed National Military Medical Center, Bethesda, USA
- Department of Veterinary Physiology & Pharmacology, Texas A&M University, College Station, TX, USA
| | - Jorge B Edwards
- Research and Surveillance Division DoD-VA Extremity Trauma and Amputation Center of Excellence, Bethesda, USA
- Department of Surgery, Uniformed Services University of the Health Sciences-Walter Reed National Military Medical Center, Bethesda, USA
- The Henry M. Jackson Foundation for the Advancement of Military Medicine, Bethesda, USA
| | - Naveena B Janakiram
- Research and Surveillance Division DoD-VA Extremity Trauma and Amputation Center of Excellence, Bethesda, USA
- Department of Surgery, Uniformed Services University of the Health Sciences-Walter Reed National Military Medical Center, Bethesda, USA
- Translational Research Program, Division of Cancer Treatment and Diagnosis (DCTD), National Cancer Institute (NCI), Rockville, MD, USA
| | - Benjamin K Potter
- Department of Surgery, Uniformed Services University of the Health Sciences-Walter Reed National Military Medical Center, Bethesda, USA
- Department of Orthopedic Surgery, Walter Reed National Military Medical Center, Bethesda, USA
| | - Christopher L Dearth
- Research and Surveillance Division DoD-VA Extremity Trauma and Amputation Center of Excellence, Bethesda, USA
- Department of Surgery, Uniformed Services University of the Health Sciences-Walter Reed National Military Medical Center, Bethesda, USA
| | - Stephen M Goldman
- Research and Surveillance Division DoD-VA Extremity Trauma and Amputation Center of Excellence, Bethesda, USA.
- Department of Surgery, Uniformed Services University of the Health Sciences-Walter Reed National Military Medical Center, Bethesda, USA.
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10
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Zhang Y, Liu D, Vithran DTA, Kwabena BR, Xiao W, Li Y. CC chemokines and receptors in osteoarthritis: new insights and potential targets. Arthritis Res Ther 2023; 25:113. [PMID: 37400871 PMCID: PMC10316577 DOI: 10.1186/s13075-023-03096-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Accepted: 06/23/2023] [Indexed: 07/05/2023] Open
Abstract
Osteoarthritis (OA) is a prevalent degenerative disease accompanied by the activation of innate and adaptive immune systems-associated inflammatory responses. Due to the local inflammation, the expression of various cytokines was altered in affected joints, including CC motif chemokine ligands (CCLs) and their receptors (CCRs). As essential members of chemokines, CCLs and CCRs played an important role in the pathogenesis and treatment of OA. The bindings between CCLs and CCRs on the chondrocyte membrane promoted chondrocyte apoptosis and the release of multiple matrix-degrading enzymes, which resulted in cartilage degradation. In addition, CCLs and CCRs had chemoattractant functions to attract various immune cells to osteoarthritic joints, further leading to the aggravation of local inflammation. Furthermore, in the nerve endings of joints, CCLs and CCRs, along with several cellular factors, contributed to pain hypersensitivity by releasing neurotransmitters in the spinal cord. Given this family's diverse and complex functions, targeting the functional network of CCLs and CCRs is a promising strategy for the prognosis and treatment of OA in the future.
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Affiliation(s)
- Yuchen Zhang
- Department of Orthopedics, Xiangya Hospital, Central South University, Changsha, 410008, Hunan, China
- Xiangya School of Medicine, Central South University, Changsha, 410013, Hunan, China
| | - Di Liu
- Department of Orthopedics, Xiangya Hospital, Central South University, Changsha, 410008, Hunan, China
| | | | - Bosomtwe Richmond Kwabena
- Department of Orthopedics, Xiangya Hospital, Central South University, Changsha, 410008, Hunan, China
| | - Wenfeng Xiao
- Department of Orthopedics, Xiangya Hospital, Central South University, Changsha, 410008, Hunan, China.
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, 410008, Hunan, China.
| | - Yusheng Li
- Department of Orthopedics, Xiangya Hospital, Central South University, Changsha, 410008, Hunan, China.
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, 410008, Hunan, China.
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11
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Perrot S, Anne-Priscille T. Pain in osteoarthritis from a symptom to a disease. Best Pract Res Clin Rheumatol 2023; 37:101825. [PMID: 37236892 DOI: 10.1016/j.berh.2023.101825] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Accepted: 04/21/2023] [Indexed: 05/28/2023]
Abstract
Pain is the most frequent symptom of osteoarthritis (OA), occurring much more commonly than stiffness or disability. Classically, OA-related pain has been considered to be a nociceptive pain condition and an alarm signal correlated to the intensity of joint degradation. However, OA-related pain is a specific disease, with a complex pathophysiology, including neuropathic peripheral and central abnormalities, together with local inflammation involving all joint structures. Clinical findings emphasize that it is not a stable and linear condition, that pain experience is poorly correlated to structural modifications, and that the quality of pain in OA is important to consider, aside from its intensity. OA-related pain is modulated by many factors, including the individual patient's psychological and genetic factors, as well as the theoretical role of meteorological influences. Recent findings have improved our knowledge about the central mechanisms of OA pain, especially in persistent cases. A specific questionnaire on OA pain is currently being developed to assess more precisely the patient's experience and target specific pain mechanisms. In conclusion, OA-related pain should be analyzed specifically aside from OA, taking into account the complexity of OA pain as a disease, distinguishing different OA pain phenotypes, to guide more precisely analgesic treatment and OA global management.
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Affiliation(s)
- Serge Perrot
- Pain Department, Cochin Hospital, Assistance Publique Hôpitaux de Paris, Paris, France; Paris Cité University, INSERM U987, Paris, France.
| | - Trouvin Anne-Priscille
- Pain Department, Cochin Hospital, Assistance Publique Hôpitaux de Paris, Paris, France; Paris Cité University, INSERM U987, Paris, France
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12
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Willcockson H, Ozkan H, Valdés-Fernández J, Arbeeva L, Mucahit E, Musawwir L, Hooper LB, Granero-Moltó F, Prósper F, Longobardi L. CC-Chemokine Receptor-2 Expression in Osteoblasts Contributes to Cartilage and Bone Damage during Post-Traumatic Osteoarthritis. Biomolecules 2023; 13:891. [PMID: 37371471 PMCID: PMC10296290 DOI: 10.3390/biom13060891] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Revised: 05/09/2023] [Accepted: 05/16/2023] [Indexed: 06/29/2023] Open
Abstract
In osteoarthritis (OA), bone changes are radiological hallmarks and are considered important for disease progression. The C-C chemokine receptor-2 (CCR2) has been shown to play an important role in bone physiology. In this study, we investigated whether Ccr2 osteoblast-specific inactivation at different times during post-traumatic OA (PTOA) progression improves joint structures, bone parameters, and pain. We used a tamoxifen-inducible Ccr2 inactivation in Collagen1α-expressing cells to obtain osteoblasts lacking Ccr2 (CCR2-Col1αKO). We stimulated PTOA changes in CCR2-Col1αKO and CCR2+/+ mice using the destabilization of the meniscus model (DMM), inducing recombination before or after DMM (early- vs. late-inactivation). Joint damage was evaluated at two, four, eight, and twelve weeks post-DMM using multiple scores: articular-cartilage structure (ACS), Safranin-O, histomorphometry, osteophyte size/maturity, subchondral bone thickness and synovial hyperplasia. Spontaneous and evoked pain were assessed for up to 20 weeks. We found that early osteoblast-Ccr2 inactivation delayed articular cartilage damage and matrix degeneration compared to CCR2+/+, as well as DMM-induced bone thickness. Osteophyte formation and maturation were only minimally affected. Late Collagen1α-Ccr2 deletion led to less evident improvements. Osteoblast-Ccr2 deletion also improved static measures of pain, while evoked pain did not change. Our study demonstrates that Ccr2 expression in osteoblasts contributes to PTOA disease progression and pain by affecting both cartilage and bone tissues.
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Affiliation(s)
- Helen Willcockson
- Division of Rheumatology, Allergy and Immunology, University of North Carolina at Chapel Hill, 3300 Thurston Bldg, Campus Box 7280, Chapel Hill, NC 27599, USA; (H.W.); (H.O.); (L.A.); (E.M.); (L.M.); (L.B.H.)
| | - Huseyin Ozkan
- Division of Rheumatology, Allergy and Immunology, University of North Carolina at Chapel Hill, 3300 Thurston Bldg, Campus Box 7280, Chapel Hill, NC 27599, USA; (H.W.); (H.O.); (L.A.); (E.M.); (L.M.); (L.B.H.)
| | - José Valdés-Fernández
- Program of Regenerative Medicine, Center for Applied Medical Research (CIMA), Universidad de Navarra, 31008 Pamplona, Spain; (J.V.-F.); (F.G.-M.); (F.P.)
| | - Liubov Arbeeva
- Division of Rheumatology, Allergy and Immunology, University of North Carolina at Chapel Hill, 3300 Thurston Bldg, Campus Box 7280, Chapel Hill, NC 27599, USA; (H.W.); (H.O.); (L.A.); (E.M.); (L.M.); (L.B.H.)
| | - Esra Mucahit
- Division of Rheumatology, Allergy and Immunology, University of North Carolina at Chapel Hill, 3300 Thurston Bldg, Campus Box 7280, Chapel Hill, NC 27599, USA; (H.W.); (H.O.); (L.A.); (E.M.); (L.M.); (L.B.H.)
| | - Layla Musawwir
- Division of Rheumatology, Allergy and Immunology, University of North Carolina at Chapel Hill, 3300 Thurston Bldg, Campus Box 7280, Chapel Hill, NC 27599, USA; (H.W.); (H.O.); (L.A.); (E.M.); (L.M.); (L.B.H.)
| | - Lola B. Hooper
- Division of Rheumatology, Allergy and Immunology, University of North Carolina at Chapel Hill, 3300 Thurston Bldg, Campus Box 7280, Chapel Hill, NC 27599, USA; (H.W.); (H.O.); (L.A.); (E.M.); (L.M.); (L.B.H.)
| | - Froilán Granero-Moltó
- Program of Regenerative Medicine, Center for Applied Medical Research (CIMA), Universidad de Navarra, 31008 Pamplona, Spain; (J.V.-F.); (F.G.-M.); (F.P.)
- Department of Orthopedic Surgery and Traumatology, Clínica Universidad de Navarra, 31008 Pamplona, Spain
- Instituto de Investigacion Sanitaria de Navarra (IdiSNA), 31008 Pamplona, Spain
| | - Felipe Prósper
- Program of Regenerative Medicine, Center for Applied Medical Research (CIMA), Universidad de Navarra, 31008 Pamplona, Spain; (J.V.-F.); (F.G.-M.); (F.P.)
- Instituto de Investigacion Sanitaria de Navarra (IdiSNA), 31008 Pamplona, Spain
- Department of Hematology and Cell Therapy and CCUN, Clínica Universidad de Navarra, 31008 Pamplona, Spain
- CIBERONC, 28029 Madrid, Spain
- Program of Hemato-Oncology, Center for Applied Medical Research (CIMA), Universidad de Navarra, 31008 Pamplona, Spain
| | - Lara Longobardi
- Division of Rheumatology, Allergy and Immunology, University of North Carolina at Chapel Hill, 3300 Thurston Bldg, Campus Box 7280, Chapel Hill, NC 27599, USA; (H.W.); (H.O.); (L.A.); (E.M.); (L.M.); (L.B.H.)
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Lu K, Wang Q, Jiang H, Li J, Yao Z, Huang Y, Chen J, Zhang Y, Xiao G, Hu X, Luo Z, Yang L, Tong L, Chen D. Upregulation of β-catenin signaling represents a single common pathway leading to the various phenotypes of spinal degeneration and pain. Bone Res 2023; 11:18. [PMID: 37059724 PMCID: PMC10104801 DOI: 10.1038/s41413-023-00253-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Revised: 01/21/2023] [Accepted: 02/10/2023] [Indexed: 04/16/2023] Open
Abstract
Spine degeneration is an aging-related disease, but its molecular mechanisms remain unknown, although elevated β-catenin signaling has been reported to be involved in intervertebral disc degeneration. Here, we determined the role of β-catenin signaling in spinal degeneration and in the homeostasis of the functional spinal unit (FSU), which includes the intervertebral disc, vertebra and facet joint and is the smallest physiological motion unit of the spine. We showed that pain sensitivity in patients with spinal degeneration is highly correlated with β-catenin protein levels. We then generated a mouse model of spinal degeneration by transgenic expression of constitutively active β-catenin in Col2+ cells. We found that β-catenin-TCF7 activated the transcription of CCL2, a known critical factor in osteoarthritic pain. Using a lumbar spine instability model, we showed that a β-catenin inhibitor relieved low back pain. Our study indicates that β-catenin plays a critical role in maintaining spine tissue homeostasis, its abnormal upregulation leads to severe spinal degeneration, and its targeting could be an avenue to treat this condition.
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Affiliation(s)
- Ke Lu
- Research Center for Computer-aided Drug Discovery, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
- Faculty of Pharmaceutical Sciences, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
| | - Qingyun Wang
- Research Center for Computer-aided Drug Discovery, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
- Faculty of Pharmaceutical Sciences, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
| | - Hua Jiang
- Division of Spine Surgery, the First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
| | - Jun Li
- Department of Orthopedic Surgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Zhou Yao
- Institute of Orthopedics, Xijing Hospital, the Fourth Military Medical University, Xi'an, China
| | - Yongcan Huang
- Department of Spine Surgery, Peking University Shenzhen Hospital, Shenzhen, China
| | - Jianquan Chen
- Department of Clinical Medicine, School of Medicine, Zhejiang University City College, Hangzhou, Zhejiang, China
| | - Yejia Zhang
- Department of Orthopedic Surgery, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
- Departments of Physical Medicine & Rehabilitation, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Guozhi Xiao
- School of Medicine, Southern University of Science and Technology, Shenzhen, China
| | - Xueyu Hu
- Institute of Orthopedics, Xijing Hospital, the Fourth Military Medical University, Xi'an, China
| | - Zhuojing Luo
- Institute of Orthopedics, Xijing Hospital, the Fourth Military Medical University, Xi'an, China
| | - Liu Yang
- Institute of Orthopedics, Xijing Hospital, the Fourth Military Medical University, Xi'an, China
| | - Liping Tong
- Research Center for Computer-aided Drug Discovery, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
| | - Di Chen
- Research Center for Computer-aided Drug Discovery, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China.
- Faculty of Pharmaceutical Sciences, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China.
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Xu M, Ji Y. Immunoregulation of synovial macrophages for the treatment of osteoarthritis. Open Life Sci 2023; 18:20220567. [PMID: 36789002 PMCID: PMC9896167 DOI: 10.1515/biol-2022-0567] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Revised: 01/07/2023] [Accepted: 01/09/2023] [Indexed: 02/04/2023] Open
Abstract
Osteoarthritis (OA) is the most common joint disease affecting approximately 10% of men and 18% of women older than 60. Its pathogenesis is still not fully understood; however, emerging evidence has suggested that chronic low-grade inflammation is associated with OA progression. The pathological features of OA are articular cartilage degeneration in the focal area, including new bone formation at the edge of the joint, subchondral bone changes, and synovitis. Conventional drug therapy aims to prevent further cartilage loss and joint dysfunction. However, the ideal treatment for the pathogenesis of OA remains to be defined. Macrophages are the most common immune cells in inflamed synovial tissues. In OA, synovial macrophages undergo proliferation and activation, thereby releasing pro-inflammatory cytokines, including interleukin-1 and tumor necrosis factor-α, among others. The review article discusses (1) the role of synovial macrophages in the pathogenesis of OA; (2) the progress of immunoregulation of synovial macrophages in the treatment of OA; (3) novel therapeutic targets for preventing the progress of OA or promoting cartilage repair and regeneration.
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Affiliation(s)
- Mingze Xu
- Department of Orthopedics, Shanghai Tongren Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200336, P. R. China
| | - Yunhan Ji
- Department of Orthopedics, Shanghai Tongren Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200336, P. R. China
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15
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Willcockson H, Ozkan H, Arbeeva L, Mucahit E, Musawwir L, Longobardi L. Early ablation of Ccr2 in aggrecan-expressing cells following knee injury ameliorates joint damage and pain during post-traumatic osteoarthritis. Osteoarthritis Cartilage 2022; 30:1616-1630. [PMID: 36075514 PMCID: PMC9671864 DOI: 10.1016/j.joca.2022.08.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/12/2021] [Revised: 08/10/2022] [Accepted: 08/26/2022] [Indexed: 02/02/2023]
Abstract
OBJECTIVE To investigate whether Ccr2 inactivation in aggrecan-expressing cells induced before post-traumatic OA (PTOA) onset or during progression, improves joint structures, synovial thickness and pain. DESIGN We induced a Ccr2 deletion in aggrecan-expressing cells (CCR2-AggKO) in skeletally mature mice using a tamoxifen-inducible Ccr2 inactivation. We stimulated PTOA changes (destabilization of medial meniscus, DMM) in CCR2-AggKO and CCR2+/+ mice, inducing recombination before DMM or 4 wks after DMM (early-vs late-inactivation). Joint damage was evaluated 2, 4, 8, 12 wks post-DMM using multiple scores: articular-cartilage structure (ACS), Safranin-O, histomorphometry, osteophyte size/maturity, subchondral bone thickness and synovial hyperplasia. Spontaneous (incapacitance meter) and evoked pain (von-Frey filaments) were assessed up to 20 wks. RESULTS Early aggrecan-Ccr2 inactivation in CCR2-AggKO mice (N=8) resulted in improved ACS score (8-12wk, P=0.002), AC area (4-12wk, P<0.05) and Saf-O score (2wks P=0.004, 4wks P=0.02, 8-12wks P=0.002) compared to CCR2+/+. Increased subchondral bone thickness was delayed only at 2 wks and exclusively following early recombination. Osteophyte size was not affected, but osteophyte maturation (cartilage-to-bone) was delayed (4wks P=0.04; 8 wks P=0.03). Although late aggrecan-Ccr2 deletion led to some cartilage improvement, most data did not reach statistical significance; osteophyte maturity was delayed at 12wks. Early aggrecan-Ccr2 deletion led to improved pain measures of weight bearing compared to CCR2+/+ mice (N = 9, 12wks diff 0.13 [0.01, 0.26], 16wks diff 0.15 [0.05, 0.26], 20wks diff 0.23 [0.14, 0.31]). Improved mechanosensitivity in evoked pain, although less noticeable, was detected. CONCLUSIONS We demonstrated that deletion of Ccr2 in aggrecan expressing cells reduces the initiation but not progression of OA.
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Affiliation(s)
- H Willcockson
- Division of Rheumatology, Allergy and Immunology and the Thurston Arthritis Research Center, University of North Carolina-Chapel Hill, NC, USA.
| | - H Ozkan
- Division of Rheumatology, Allergy and Immunology and the Thurston Arthritis Research Center, University of North Carolina-Chapel Hill, NC, USA.
| | - L Arbeeva
- Division of Rheumatology, Allergy and Immunology and the Thurston Arthritis Research Center, University of North Carolina-Chapel Hill, NC, USA.
| | - E Mucahit
- Division of Rheumatology, Allergy and Immunology and the Thurston Arthritis Research Center, University of North Carolina-Chapel Hill, NC, USA.
| | - L Musawwir
- Division of Rheumatology, Allergy and Immunology and the Thurston Arthritis Research Center, University of North Carolina-Chapel Hill, NC, USA.
| | - L Longobardi
- Division of Rheumatology, Allergy and Immunology and the Thurston Arthritis Research Center, University of North Carolina-Chapel Hill, NC, USA.
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FMF Kliniğine Alternatif Bir Bakış Açısı: MCP-1 (A-2518G) ve CCR2 (G190A) Polimorfizmleri ve MCP1 Ekspresyonu. JOURNAL OF CONTEMPORARY MEDICINE 2022. [DOI: 10.16899/jcm.1164970] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Amaç: Ailevi Akdeniz Ateşi (AAA) otoinflamatuar bir hastalıktır ve çeşitli klinik bulgular olarak kendini gösterebilir. Kemokinler, inflamatuar sürecin önemli unsurlarıdır. MCP-1 ve onun reseptörü CCR2, FMF'de kritik roller oynayabilen monositler/makrofajlar için ana kemokinlerdir. Bundan dolayı MEFV gen fonksiyonunu etkileyebilecek MCP-1 (A-2518G) ve CCR2 (G190A) polimorfizmlerinin ve MCP-1 ekspresyon düzeyinin araştırılması amaçlanmıştır.
Gereç ve Yöntem: FMF'li hastalar Tel-Hashomer kriterlerine göre belirlendi. Elde edilen kan örneklerinden DNA ve RNA izole edildi. Genotipleme analizi, PCR-RFLP tekniği ile yapıldı. Ayrıca Real-time PCR yöntemi ile ekspresyon analizleri yapıldı. Elde edilen sonuçlar istatistiksel olarak değerlendirildi.
Bulgular: Çalışmaya toplam 229 birey (125 erkek ve 104 kadın) dahil edildi. Bunlardan 120 kişide FMF kliniği bulunurken, 107 kişide yoktu. Kalan iki kişi şüpheli klinik duruma sahipti. Çalışmaya alınan bireyler MEFV genotiplemesine göre değerlendirildiğinde ise 75 birey homozigot mutant, 77 birey Heterozigot saptanırken 77 birey ise MEFV geninde mutasyon taşımıyordu. Yapılan analizde Hem FMF kliniği hem de MEFV genotipleri ile MCP-1 (A-2518G) ve CCR2 (G190A) genotipleri arasında anlamlı bir ilişki bulunmadı. Ekspresyon analizinde, FMF kliniği olan hastalarda olmayanlara göre MCP-1 ekspresyonu artmış olarak saptandı. Ayrıca heterozigot MEFV grubunda mutasyonu olmayanlara göre MCP-1 ekspresyonu artmış olarak saptandı, Dahası homozigot MEFV grubunda MCP-1 ekspresyonu en yüksek düzeydeydi. Ek olarak, MCP-1 (A-2518G) genotiplendirmesine göre, MCP-1 ekspresyonu, Wild type gruba kıyasla hem homozigot hem de heterozigot gruplarda yükselmiştir.
Sonuç: FMF hastalığında MCP-1 ekspresyonu artmış olup, bu durum FMF hastaları arasındaki klinik farklılıkları açıklayabilir. MEFV mutasyonları, MCP-1 transkripsiyonunu artırarak inflamasyonu şiddetlendirebilir. MCP-1(A-2518G) mutasyonlu hastalarda MCP-1 ekspresyonu artar, bu da FMF kliniğini ağırlaştırır.
Anahtar Kelimeler: Ailevi Akdeniz Ateşi, MCP-1, CCR2, Expresyon analizi
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Na HS, Lee SY, Lee DH, Woo JS, Choi SY, Cho KH, Kim SA, Go EJ, Lee AR, Choi JW, Kim SJ, Cho ML. Soluble CCR2 gene therapy controls joint inflammation, cartilage damage, and the progression of osteoarthritis by targeting MCP-1 in a monosodium iodoacetate (MIA)-induced OA rat model. J Transl Med 2022; 20:428. [PMID: 36138477 PMCID: PMC9503236 DOI: 10.1186/s12967-022-03515-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Accepted: 06/30/2022] [Indexed: 11/23/2022] Open
Abstract
Background Osteoarthritis (OA) is the most common type of degenerative arthritis and affects the entire joint, causing pain, joint inflammation, and cartilage damage. Various risk factors are implicated in causing OA, and in recent years, a lot of research and interest have been directed toward chronic low-grade inflammation in OA. Monocyte chemoattractant protein-1 (MCP-1; also called CCL2) acts through C–C chemokine receptor type 2 (CCR2) in monocytes and is a chemotactic factor of monocytes that plays an important role in the initiation of inflammation. The targeting of CCL2–CCR2 is being studied as part of various topics including the treatment of OA. Methods In this study, we evaluated the potential therapeutic effects the sCCR2 E3 gene may exert on OA. The effects of sCCR2 E3 were investigated in animal experiments consisting of intra-articular injection of sCCR2 E3 in a monosodium iodoacetate (MIA)-induced OA rat model. The effects after intra-articular injection of sCCR2 E3 (fusion protein encoding 20 amino acids of the E3 domain of the CCL2 receptor) in a monosodium iodoacetate-induced OA rat model were compared to those in rats treated with empty vector (mock treatment) and full-length sCCR2. Results Pain improved with expression of the sCCR2 gene. Improved bone resorption upon sCCR2 E3 gene activation was confirmed via bone analyses using micro-computed tomography. Histologic analyses showed that the sCCR2 E3 gene exerted protective effects against cartilage damage and anti-inflammatory effects on joints and the intestine. Conclusions These results show that sCCR2 E3 therapy is effective in reducing pain severity, inhibiting cartilage destruction, and suppressing intestinal damage and inflammation. Thus, sCCR2 E3 may be a potential therapy for OA.
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Affiliation(s)
- Hyun Sik Na
- Lab of Translational ImmunoMedicine, Catholic Research Institute of Medical Science, College of Medicine, The Catholic University of Korea, Seoul, 06591, Republic of Korea.,Department of Biomedicine & Health Sciences, College of Medicine, The Catholic University of Korea, 222, Banpo-daero, Seocho-gu, Seoul, 06591, Republic of Korea
| | - Seon-Yeong Lee
- Lab of Translational ImmunoMedicine, Catholic Research Institute of Medical Science, College of Medicine, The Catholic University of Korea, Seoul, 06591, Republic of Korea
| | - Dong Hwan Lee
- Department of Orthopedic Surgery, Uijeongbu St. Mary's Hospital, College of Medicine, The Catholic University of Korea, 271, Cheonbo-Ro, Uijeongbu-si, Gyeonggi-do, 11765, Republic of Korea
| | - Jin Seok Woo
- Lab of Translational ImmunoMedicine, Catholic Research Institute of Medical Science, College of Medicine, The Catholic University of Korea, Seoul, 06591, Republic of Korea
| | - Si-Young Choi
- Lab of Translational ImmunoMedicine, Catholic Research Institute of Medical Science, College of Medicine, The Catholic University of Korea, Seoul, 06591, Republic of Korea
| | - Keun-Hyung Cho
- Lab of Translational ImmunoMedicine, Catholic Research Institute of Medical Science, College of Medicine, The Catholic University of Korea, Seoul, 06591, Republic of Korea.,Department of Biomedicine & Health Sciences, College of Medicine, The Catholic University of Korea, 222, Banpo-daero, Seocho-gu, Seoul, 06591, Republic of Korea
| | - Seon Ae Kim
- Department of Orthopedic Surgery, Uijeongbu St. Mary's Hospital, College of Medicine, The Catholic University of Korea, 271, Cheonbo-Ro, Uijeongbu-si, Gyeonggi-do, 11765, Republic of Korea
| | - Eun Jeong Go
- Department of Orthopedic Surgery, Uijeongbu St. Mary's Hospital, College of Medicine, The Catholic University of Korea, 271, Cheonbo-Ro, Uijeongbu-si, Gyeonggi-do, 11765, Republic of Korea
| | - A Ram Lee
- Lab of Translational ImmunoMedicine, Catholic Research Institute of Medical Science, College of Medicine, The Catholic University of Korea, Seoul, 06591, Republic of Korea.,Department of Biomedicine & Health Sciences, College of Medicine, The Catholic University of Korea, 222, Banpo-daero, Seocho-gu, Seoul, 06591, Republic of Korea
| | - Jeong-Won Choi
- Lab of Translational ImmunoMedicine, Catholic Research Institute of Medical Science, College of Medicine, The Catholic University of Korea, Seoul, 06591, Republic of Korea
| | - Seok Jung Kim
- Department of Orthopedic Surgery, Uijeongbu St. Mary's Hospital, College of Medicine, The Catholic University of Korea, 271, Cheonbo-Ro, Uijeongbu-si, Gyeonggi-do, 11765, Republic of Korea.
| | - Mi-La Cho
- Lab of Translational ImmunoMedicine, Catholic Research Institute of Medical Science, College of Medicine, The Catholic University of Korea, Seoul, 06591, Republic of Korea. .,Department of Biomedicine & Health Sciences, College of Medicine, The Catholic University of Korea, 222, Banpo-daero, Seocho-gu, Seoul, 06591, Republic of Korea. .,Department of Medical Lifescience, College of Medicine, The Catholic University of Korea, Seoul, 222, Banpo-daero, Seocho-gu, Seoul, 06591, Republic of Korea.
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Riewruja K, Makarczyk M, Alexander PG, Gao Q, Goodman SB, Bunnell BA, Gold MS, Lin H. Experimental models to study osteoarthritis pain and develop therapeutics. OSTEOARTHRITIS AND CARTILAGE OPEN 2022; 4:100306. [PMID: 36474784 PMCID: PMC9718172 DOI: 10.1016/j.ocarto.2022.100306] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Revised: 07/25/2022] [Accepted: 08/09/2022] [Indexed: 10/15/2022] Open
Abstract
Pain is the predominant symptom of osteoarthritis (OA) that drives patients to seek medical care. Currently, there are no pharmacological treatments that can reverse or halt the progression of OA. Safe and efficacious medications for long-term management of OA pain are also unavailable. Understanding the mechanisms behind OA pain generation at onset and over time is critical for developing effective treatments. In this narrative review, we first summarize our current knowledge on the innervation of the knee joint, and then discuss the molecular mechanism(s) currently thought to underlie OA pain. In particular, we focus on the contribution of each joint component to the generation of pain. Next, the current experimental models for studying OA pain are summarized, and the methods to assess pain in rodents are presented. The potential application of emerging microphysiological systems in OA pain research is especially highlighted. Lastly, we discuss the current challenge in standardizing models and the selection of appropriate systems to address specific questions.
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Affiliation(s)
- Kanyakorn Riewruja
- Department of Orthopaedic Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA,Osteoarthritis and Musculoskeleton Research Unit, Faculty of Medicine, Chulalongkorn University, King Chulalongkorn Memorial Hospital, Thai Red Cross Society, Bangkok, 10330, Thailand
| | - Meagan Makarczyk
- Department of Orthopaedic Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA,Department of Bioengineering, University of Pittsburgh Swanson School of Engineering, Pittsburgh, PA, USA
| | - Peter G. Alexander
- Department of Orthopaedic Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Qi Gao
- Department of Orthopaedic Surgery, Stanford, CA, USA
| | | | - Bruce A. Bunnell
- Department of Microbiology, Immunology, and Genetics, University of North Texas Health Science Center, Fort Worth, TX, USA
| | - Michael S. Gold
- Department of Neurobiology, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA,Corresponding author.
| | - Hang Lin
- Department of Orthopaedic Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA,Department of Bioengineering, University of Pittsburgh Swanson School of Engineering, Pittsburgh, PA, USA,Corresponding author. Department of Orthopaedic Surgery, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA.
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19
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Phenotype Diversity of Macrophages in Osteoarthritis: Implications for Development of Macrophage Modulating Therapies. Int J Mol Sci 2022; 23:ijms23158381. [PMID: 35955514 PMCID: PMC9369350 DOI: 10.3390/ijms23158381] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 07/23/2022] [Accepted: 07/23/2022] [Indexed: 02/04/2023] Open
Abstract
Chronic inflammation is implicated in numerous human pathologies. In particular, low-grade inflammation is currently recognized as an important mechanism of osteoarthritis (OA), at least in some patients. Among the signs of the inflammatory process are elevated macrophage numbers detected in the OA synovium compared to healthy controls. High macrophage counts also correlate with clinical symptoms of the disease. Macrophages are central players in the development of chronic inflammation, pain, cartilage destruction, and bone remodeling. However, macrophages are also involved in tissue repair and remodeling, including cartilage. Therefore, reduction of macrophage content in the joints correlates with deleterious effects in OA models. Macrophage population is heterogeneous and dynamic, with phenotype transitions being induced by a variety of stimuli. In order to effectively use the macrophage inflammatory circuit for treatment of OA, it is important to understand macrophage heterogeneity and interactions with surrounding cells and tissues in the joint. In this review, we discuss functional phenotypes of macrophages and specific targeting approaches relevant for OA treatment development.
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20
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Liao Y, Ren Y, Luo X, Mirando AJ, Long JT, Leinroth A, Ji RR, Hilton MJ. Interleukin-6 signaling mediates cartilage degradation and pain in posttraumatic osteoarthritis in a sex-specific manner. Sci Signal 2022; 15:eabn7082. [PMID: 35881692 PMCID: PMC9382892 DOI: 10.1126/scisignal.abn7082] [Citation(s) in RCA: 27] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Osteoarthritis (OA) and posttraumatic OA (PTOA) are caused by an imbalance in catabolic and anabolic processes in articular cartilage and proinflammatory changes throughout the joint, leading to joint degeneration and pain. We examined whether interleukin-6 (IL-6) signaling contributed to cartilage degradation and pain in PTOA. Genetic ablation of Il6 in male mice decreased PTOA-associated cartilage catabolism, innervation of the knee joint, and nociceptive signaling without improving PTOA-associated subchondral bone sclerosis or chondrocyte apoptosis. These effects were not observed in female Il6-/- mice. Compared with wild-type mice, the activation of the IL-6 downstream mediators STAT3 and ERK was reduced in the knees and dorsal root ganglia (DRG) of male Il6-/- mice after knee injury. Janus kinases (JAKs) were critical for STAT and ERK signaling in cartilage catabolism and DRG pain signaling in tissue explants. Whereas STAT3 signaling was important for cartilage catabolism, ERK signaling mediated neurite outgrowth and the activation of nociceptive neurons. These data demonstrate that IL-6 mediates both cartilage degradation and pain associated with PTOA in a sex-specific manner and identify tissue-specific contributions of downstream effectors of IL-6 signaling, which are potential therapeutic targets for disease-modifying OA drugs.
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Affiliation(s)
- Yihan Liao
- Departments of Pharmacology and Cancer Biology, Duke University School of Medicine, Durham, NC 27710, USA,Departments of Orthopaedic Surgery, Duke Orthopaedic Cellular, Developmental, and Genome Laboratories, Duke University School of Medicine, Durham, NC, 27710, USA
| | - Yinshi Ren
- Departments of Orthopaedic Surgery, Duke Orthopaedic Cellular, Developmental, and Genome Laboratories, Duke University School of Medicine, Durham, NC, 27710, USA
| | - Xin Luo
- Center for Translational Pain Medicine, Department of Anesthesiology, Duke University Medical Center, Durham, NC 27710, USA
| | - Anthony J. Mirando
- Departments of Orthopaedic Surgery, Duke Orthopaedic Cellular, Developmental, and Genome Laboratories, Duke University School of Medicine, Durham, NC, 27710, USA
| | - Jason T. Long
- Departments of Orthopaedic Surgery, Duke Orthopaedic Cellular, Developmental, and Genome Laboratories, Duke University School of Medicine, Durham, NC, 27710, USA,Department of Cell Biology, Duke University School of Medicine, Durham, NC 27710, USA
| | - Abigail Leinroth
- Departments of Orthopaedic Surgery, Duke Orthopaedic Cellular, Developmental, and Genome Laboratories, Duke University School of Medicine, Durham, NC, 27710, USA,Department of Cell Biology, Duke University School of Medicine, Durham, NC 27710, USA
| | - Ru-Rong Ji
- Center for Translational Pain Medicine, Department of Anesthesiology, Duke University Medical Center, Durham, NC 27710, USA
| | - Matthew J. Hilton
- Departments of Orthopaedic Surgery, Duke Orthopaedic Cellular, Developmental, and Genome Laboratories, Duke University School of Medicine, Durham, NC, 27710, USA,Department of Cell Biology, Duke University School of Medicine, Durham, NC 27710, USA,Corresponding author.
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21
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Valdrighi N, Vago JP, Blom AB, van de Loo FA, Blaney Davidson EN. Innate Immunity at the Core of Sex Differences in Osteoarthritic Pain? Front Pharmacol 2022; 13:881500. [PMID: 35662714 PMCID: PMC9160873 DOI: 10.3389/fphar.2022.881500] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Accepted: 04/29/2022] [Indexed: 11/24/2022] Open
Abstract
Osteoarthritis (OA) is a progressive whole-joint disease; no disease-modifying drugs are currently available to stop or slow its process. Symptoms alleviation is the only treatment option. OA is the major cause of chronic pain in adults, with pain being the main symptom driving patients to seek medical help. OA pathophysiology is closely associated with the innate immune system, which is also closely linked to pain mediators leading to joint pain. Pain research has shown sex differences in the biology of pain, including sexually dimorphic responses from key cell types in the innate immune system. Not only is OA more prevalent in women than in men, but women patients also show worse OA outcomes, partially due to experiencing more pain symptoms despite having similar levels of structural damage. The cause of sex differences in OA and OA pain is poorly understood. This review provides an overview of the involvement of innate immunity in OA pain in joints and in the dorsal root ganglion. We summarize the emerging evidence of sex differences regarding innate immunity in OA pain. Our main goal with this review was to provide a scientific foundation for future research leading to alternative pain relief therapies targeting innate immunity that consider sex differences. This will ultimately lead to a more effective treatment of pain in both women and men.
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22
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Wood MJ, Miller RE, Malfait AM. The Genesis of Pain in Osteoarthritis: Inflammation as a Mediator of Osteoarthritis Pain. Clin Geriatr Med 2022; 38:221-238. [PMID: 35410677 PMCID: PMC9053380 DOI: 10.1016/j.cger.2021.11.013] [Citation(s) in RCA: 35] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Chronic pain is a substantial personal and societal burden worldwide. Osteoarthritis (OA) is one of the leading causes of chronic pain and is increasing in prevalence in accordance with a global aging population. In addition to affecting patients' physical lives, chronic pain also adversely affects patients' mental wellbeing. However, there remain no pharmacologic interventions to slow down the progression of OA and pain-alleviating therapies are largely unsuccessful. The presence of low-level inflammation in OA has been recognized for many years as a major pathogenic driver of joint damage. Inflammatory mechanisms can occur locally in joint tissues, such as the synovium, within the sensory nervous system, as well as systemically, caused by modifiable and unmodifiable factors. Understanding how inflammation may contribute to, and modify pain in OA will be instrumental in identifying new druggable targets for analgesic therapies. In this narrative review, we discuss recent insights into inflammatory mechanisms in OA pain. We discuss how local inflammation in the joint can contribute to mechanical sensitization and to the structural neuroplasticity of joint nociceptors, through pro-inflammatory factors such as nerve growth factor, cytokines, and chemokines. We consider the role of synovitis, and the amplifying mechanisms of neuroimmune interactions. We then explore emerging evidence around the role of neuroinflammation in the dorsal root ganglia and dorsal horn. Finally, we discuss how systemic inflammation associated with obesity may modify OA pain and suggest future research directions.
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Affiliation(s)
- Matthew J Wood
- Department of Internal Medicine, Division of Rheumatology, Rush University Medical Center, Room 340, 1735 W Harrison Street, Chicago, IL 60612, USA
| | - Rachel E Miller
- Department of Internal Medicine, Division of Rheumatology, Rush University Medical Center, Room 714, 1735 W Harrison Street, Chicago, IL 60612, USA
| | - Anne-Marie Malfait
- Department of Internal Medicine, Division of Rheumatology, Rush University Medical Center, 1611 W Harrison Street, Suite 510, Chicago, IL 60612, USA.
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23
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Vasconcelos DP, Jabangwe C, Lamghari M, Alves CJ. The Neuroimmune Interplay in Joint Pain: The Role of Macrophages. Front Immunol 2022; 13:812962. [PMID: 35355986 PMCID: PMC8959978 DOI: 10.3389/fimmu.2022.812962] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Accepted: 02/15/2022] [Indexed: 12/29/2022] Open
Abstract
Chronic pain associated with joint disorders, such as rheumatoid arthritis (RA), osteoarthritis (OA) and implant aseptic loosening (AL), is a highly debilitating symptom that impacts mobility and quality of life in affected patients. The neuroimmune crosstalk has been demonstrated to play a critical role in the onset and establishment of chronic pain conditions. Immune cells release cytokines and immune mediators that can activate and sensitize nociceptors evoking pain, through interaction with receptors in the sensory nerve terminals. On the other hand, sensory and sympathetic nerve fibers release neurotransmitters that bind to their specific receptor expressed on surface of immune cells, initiating an immunomodulatory role. Macrophages have been shown to be key players in the neuroimmune crosstalk. Moreover, macrophages constitute the dominant immune cell population in RA, OA and AL. Importantly, the targeting of macrophages can result in anti-nociceptive effects in chronic pain conditions. Therefore, the aim of this review is to discuss the nature and impact of the interaction between the inflammatory response and nerve fibers in these joint disorders regarding the genesis and maintenance of pain. The role of macrophages is highlighted. The alteration in the joint innervation pattern and the inflammatory response are also described. Additionally, the immunomodulatory role of sensory and sympathetic neurotransmitters is revised.
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Affiliation(s)
- Daniela P Vasconcelos
- Instituto de Investigação e Inovação em Saúde da Universidade do Porto- Associação, Porto, Portugal.,Instituto de Engenharia Biomédica, Universidade do Porto, Porto, Portugal
| | - Clive Jabangwe
- Instituto de Investigação e Inovação em Saúde da Universidade do Porto- Associação, Porto, Portugal.,Instituto de Engenharia Biomédica, Universidade do Porto, Porto, Portugal.,Faculdade de Engenharia, Universidade do Porto, Porto, Portugal
| | - Meriem Lamghari
- Instituto de Investigação e Inovação em Saúde da Universidade do Porto- Associação, Porto, Portugal.,Instituto de Engenharia Biomédica, Universidade do Porto, Porto, Portugal.,Instituto Ciências Biomédicas Abel Salazar, Universidade de Porto, Porto, Portugal
| | - Cecília J Alves
- Instituto de Investigação e Inovação em Saúde da Universidade do Porto- Associação, Porto, Portugal.,Instituto de Engenharia Biomédica, Universidade do Porto, Porto, Portugal
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24
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Gonçalves S, Gowler PR, Woodhams SG, Turnbull J, Hathway G, Chapman V. The challenges of treating osteoarthritis pain and opportunities for novel peripherally directed therapeutic strategies. Neuropharmacology 2022; 213:109075. [DOI: 10.1016/j.neuropharm.2022.109075] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2021] [Revised: 03/07/2022] [Accepted: 04/21/2022] [Indexed: 12/22/2022]
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25
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Lamuedra A, Gratal P, Calatrava L, Ruiz-Perez VL, Palencia-Campos A, Portal-Núñez S, Mediero A, Herrero-Beaumont G, Largo R. Blocking chondrocyte hypertrophy in conditional Evc knockout mice does not modify cartilage damage in osteoarthritis. FASEB J 2022; 36:e22258. [PMID: 35334131 DOI: 10.1096/fj.202101791rr] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 02/21/2022] [Accepted: 03/07/2022] [Indexed: 12/16/2022]
Abstract
Chondrocytes in osteoarthritic (OA) cartilage acquire a hypertrophic-like phenotype, where Hedgehog (Hh) signaling is pivotal. Hh overexpression causes OA-like cartilage lesions, whereas its downregulation prevents articular destruction in mouse models. Mutations in EVC and EVC2 genes disrupt Hh signaling, and are responsible for the Ellis-van Creveld syndrome skeletal dysplasia. Since Ellis-van Creveld syndrome protein (Evc) deletion is expected to hamper Hh target gene expression we hypothesized that it would also prevent OA progression avoiding chondrocyte hypertrophy. Our aim was to study Evc as a new therapeutic target in OA, and whether Evc deletion restrains chondrocyte hypertrophy and prevents joint damage in an Evc tamoxifen induced knockout (EvccKO ) model of OA. For this purpose, OA was induced by surgical knee destabilization in wild-type (WT) and EvccKO adult mice, and healthy WT mice were used as controls (n = 10 knees/group). Hypertrophic markers and Hh genes were measured by qRT-PCR, and metalloproteinases (MMP) levels assessed by western blot. Human OA chondrocytes and cartilage samples were obtained from patients undergoing knee joint replacement surgery. Cyclopamine (CPA) was used for Hh pharmacological inhibition and IL-1 beta as an inflammatory insult. Our results showed that tamoxifen induced inactivation of Evc inhibited Hh overexpression and partially prevented chondrocyte hypertrophy during OA, although it did not ameliorate cartilage damage in DMM-EvccKO mice. Hh pathway inhibition did not modify the expression of proinflammatory mediators induced by IL-1 beta in human OA chondrocytes in culture. We found that hypertrophic-IHH-and inflammatory-COX-2-markers co-localized in OA cartilage samples. We concluded that tamoxifen induced inactivation of Evc partially prevented chondrocyte hypertrophy in DMM-EvccKO mice, but it did not ameliorate cartilage damage. Overall, our results suggest that chondrocyte hypertrophy per se is not a pathogenic event in the progression of OA.
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Affiliation(s)
- Ana Lamuedra
- Bone and Joint Research Unit, Service of Rheumatology, IIS-Fundación Jiménez Díaz, Autonomous University of Madrid, Madrid, Spain
| | - Paula Gratal
- Bone and Joint Research Unit, Service of Rheumatology, IIS-Fundación Jiménez Díaz, Autonomous University of Madrid, Madrid, Spain
| | - Lucía Calatrava
- Instituto de Investigaciones Biomédicas 'Alberto Sols', CSIC-UAM, Madrid, Spain.,CIBER de Enfermedades Raras (CIBERER), ISCIII, Spain
| | - Víctor Luis Ruiz-Perez
- Instituto de Investigaciones Biomédicas 'Alberto Sols', CSIC-UAM, Madrid, Spain.,CIBER de Enfermedades Raras (CIBERER), ISCIII, Spain.,Instituto de Genética Médica y Molecular (INGEMM), Hospital Universitario La Paz-IdiPaz-UAM, Madrid, Spain
| | | | - Sergio Portal-Núñez
- Bone Physiopathology Laboratory, Applied Molecular Medicine Institute (IMMA), Universidad San Pablo-CEU, Madrid, Spain
| | - Aránzazu Mediero
- Bone and Joint Research Unit, Service of Rheumatology, IIS-Fundación Jiménez Díaz, Autonomous University of Madrid, Madrid, Spain
| | - Gabriel Herrero-Beaumont
- Bone and Joint Research Unit, Service of Rheumatology, IIS-Fundación Jiménez Díaz, Autonomous University of Madrid, Madrid, Spain
| | - Raquel Largo
- Bone and Joint Research Unit, Service of Rheumatology, IIS-Fundación Jiménez Díaz, Autonomous University of Madrid, Madrid, Spain
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26
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Wang F, Liu M, Wang N, Luo J. G Protein-Coupled Receptors in Osteoarthritis. Front Endocrinol (Lausanne) 2022; 12:808835. [PMID: 35154008 PMCID: PMC8831737 DOI: 10.3389/fendo.2021.808835] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Accepted: 12/15/2021] [Indexed: 11/13/2022] Open
Abstract
Osteoarthritis (OA) is the most common chronic joint disease characterized, for which there are no available therapies being able to modify the progression of OA and prevent long-term disability. Critical roles of G-protein coupled receptors (GPCRs) have been established in OA cartilage degeneration, subchondral bone sclerosis and chronic pain. In this review, we describe the pathophysiological processes targeted by GPCRs in OA, along with related preclinical model and/or clinical trial data. We review examples of GPCRs which may offer attractive therapeutic strategies for OA, including receptors for cannabinoids, hormones, prostaglandins, fatty acids, adenosines, chemokines, and discuss the main challenges for developing these therapies.
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Affiliation(s)
- Fanhua Wang
- Yangzhi Rehabilitation Hospital (Shanghai Sunshine Rehabilitation Center), Tongji University School of Medicine, Shanghai, China
| | - Mingyao Liu
- Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai, China
| | - Ning Wang
- Department of Oncology and Metabolism, The University of Sheffield, Sheffield, United Kingdom
| | - Jian Luo
- Yangzhi Rehabilitation Hospital (Shanghai Sunshine Rehabilitation Center), Tongji University School of Medicine, Shanghai, China
- Shanghai Key Laboratory of Regulatory Biology, Institute of Biomedical Sciences and School of Life Sciences, East China Normal University, Shanghai, China
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27
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Morgan M, Nazemian V, Harrington K, Ivanusic JJ. Mini review: The role of sensory innervation to subchondral bone in osteoarthritis pain. Front Endocrinol (Lausanne) 2022; 13:1047943. [PMID: 36605943 PMCID: PMC9808033 DOI: 10.3389/fendo.2022.1047943] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Accepted: 11/30/2022] [Indexed: 01/07/2023] Open
Abstract
Osteoarthritis pain is often thought of as a pain driven by nerves that innervate the soft tissues of the joint, but there is emerging evidence for a role for nerves that innervate the underlying bone. In this mini review we cite evidence that subchondral bone lesions are associated with pain in osteoarthritis. We explore recent studies that provide evidence that sensory neurons that innervate bone are nociceptors that signal pain and can be sensitized in osteoarthritis. Finally, we describe neuronal remodeling of sensory and sympathetic nerves in bone and discuss how these processes can contribute to osteoarthritis pain.
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28
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Jansen MP, Mastbergen SC. Joint distraction for osteoarthritis: clinical evidence and molecular mechanisms. Nat Rev Rheumatol 2022; 18:35-46. [PMID: 34616035 DOI: 10.1038/s41584-021-00695-y] [Citation(s) in RCA: 34] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/06/2021] [Indexed: 12/20/2022]
Abstract
Joint distraction, the prolonged mechanical separation of the bones at a joint, has emerged as a joint-preserving treatment for end-stage osteoarthritis, with the gradually growing promise of implementation in regular clinical practice. Joint distraction of the knee has been most extensively studied, with these studies showing prolonged symptomatic improvement in combination with repair of cartilage tissue in degenerated knee joints, supporting the concept that cartilage repair can translate into real clinical benefit. The reversal of tissue degeneration observed with joint distraction could be the result of one or a combination of various proposed mechanisms, including partial unloading, synovial fluid pressure oscillation, mechanical and biochemical changes in subchondral bone, adhesion and chondrogenic commitment of joint-derived mesenchymal stem cells or a change in the molecular milieu of the joint. The overall picture that emerges from the combined evidence is relevant for future research and treatment-related improvements of joint distraction and for translation of the insights gained about tissue repair to other joint-preserving techniques. It remains to be elucidated whether optimizing the biomechanical conditions during joint distraction can actually cure osteoarthritis rather than only providing temporary symptomatic relief, but even temporary relief might be relevant for society and patients, as it will delay joint replacement with a prosthesis at an early age and thereby avert revision surgery later in life. Most importantly, improved insights into the underlying mechanisms of joint repair might provide new leads for more targeted treatment options.
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Affiliation(s)
- Mylène P Jansen
- Rheumatology & Clinical Immunology, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Simon C Mastbergen
- Rheumatology & Clinical Immunology, University Medical Center Utrecht, Utrecht, The Netherlands.
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29
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Rzeczycki P, Rasner C, Lammlin L, Junginger L, Goldman S, Bergman R, Redding S, Knights AJ, Elliott M, Maerz T. Cannabinoid receptor type 2 is upregulated in synovium following joint injury and mediates anti-inflammatory effects in synovial fibroblasts and macrophages. Osteoarthritis Cartilage 2021; 29:1720-1731. [PMID: 34537380 PMCID: PMC8883578 DOI: 10.1016/j.joca.2021.09.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Revised: 08/09/2021] [Accepted: 09/06/2021] [Indexed: 02/02/2023]
Abstract
OBJECTIVE Joint injury-induced perturbations to the endocannabinoid system (ECS), a regulator of both inflammation and nociception, remain largely uncharacterized. We employed a mouse model of ACL rupture to assess alterations to nociception, inflammation, and the ECS while using in vitro models to determine whether CB2 agonism can mitigate inflammatory signaling in macrophages and fibroblast-like synoviocytes (FLS). DESIGN Mice underwent noninvasive ACL rupture (ACLR) via tibial compression-based loading. Nociception was measured longitudinally using mechanical allodynia and knee hyperalgesia testing. Synovitis was assessed using histological scoring and histomorphometry. Gene and protein markers of inflammation were characterized in whole joints and synovium. Immunohistochemistry assessed injury-induced alterations to CB1+, CB2+, and F4/80+ cells in synovium. To assess whether CB2 agonism can inhibit pro-inflammatory macrophage polarization, murine bone marrow-derived macrophages (mBMDM) were stimulated with IL-1β or conditioned medium from IL-1β-treated FLS and treated with vehicle (DMSO), the CB2 agonist HU308, or cannabidiol (CBD). Macrophage polarization was assessed as the ratio of M1-associated (IL1b, MMP1b, and IL6) to M2-associated (IL10, IL4, and CD206) gene expression. Human FLS (hFLS) isolated from synovial tissue of OA patients were treated with vehicle (DMSO) or HU308 following TNF-α or IL-1β stimulation to assess inhibition of catabolic/inflammatory gene expression. RESULTS ACLR induces synovitis, progressively-worsening PTOA severity, and an immediate and sustained increase in both mechanical allodynia and knee hyperalgesia, which persist beyond the resolution of molecular inflammation. Enrichment of CB2, but not CB1, was observed in ACLR synovium at 3d, 14d, and 28d, and CB2 was found to be associated with F4/80 (+) cells, which are increased in number in ACLR synovium at all time points. The CB2 agonist HU308 strongly inhibited mBMDM M1-type polarization following stimulation with either IL-1β or conditioned medium from IL-1β-treated mFLS, which was characterized by reductions in Il1b, Mmp1b, and Il6 and increases in Cd206 gene expression. Cannabidiol similarly inhibited IL-1β-induced mBMDM M1 polarization via a reduction in Il1b and an increase in Cd206 and Il4 gene expression. Lastly, in OA hFLS, HU308 treatment inhibited IL-1β-induced CCL2, MMP1, MMP3, and IL6 expression and further inhibited TNF-α-induced CCL2, MMP1, and GMCSF expression, demonstrating human OA-relevant anti-inflammatory effects by targeting CB2. CONCLUSIONS Joint injury perturbs the intra-articular ECS, characterized by an increase in synovial F4/80(+) cells, which express CB2, but not CB1. Targeting CB2 in murine macrophages and human FLS induced potent anti-inflammatory and anti-catabolic effects, which indicates that the CB2 receptor plays a key role in regulating inflammatory signaling in the two primary effector cells in the synovium. The intraarticular ECS is therefore a potential therapeutic target for blocking pathological inflammation in future disease-modifying PTOA treatments.
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Affiliation(s)
- P Rzeczycki
- Orthopaedic Research Laboratories, Department of Orthopaedic Surgery, University of Michigan, Ann Arbor, MI, USA
| | - C Rasner
- Orthopaedic Research Laboratories, Department of Orthopaedic Surgery, University of Michigan, Ann Arbor, MI, USA
| | - L Lammlin
- Orthopaedic Research Laboratories, Department of Orthopaedic Surgery, University of Michigan, Ann Arbor, MI, USA
| | - L Junginger
- Orthopaedic Research Laboratories, Department of Orthopaedic Surgery, University of Michigan, Ann Arbor, MI, USA
| | - S Goldman
- Orthopaedic Research Laboratories, Department of Orthopaedic Surgery, University of Michigan, Ann Arbor, MI, USA
| | - R Bergman
- Orthopaedic Research Laboratories, Department of Orthopaedic Surgery, University of Michigan, Ann Arbor, MI, USA
| | - S Redding
- Orthopaedic Research Laboratories, Department of Orthopaedic Surgery, University of Michigan, Ann Arbor, MI, USA
| | - A J Knights
- Orthopaedic Research Laboratories, Department of Orthopaedic Surgery, University of Michigan, Ann Arbor, MI, USA
| | - M Elliott
- Orthopaedic Research Laboratories, Department of Orthopaedic Surgery, University of Michigan, Ann Arbor, MI, USA
| | - T Maerz
- Orthopaedic Research Laboratories, Department of Orthopaedic Surgery, University of Michigan, Ann Arbor, MI, USA.
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30
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Guido G, Ausenda G, Iascone V, Chisari E. Gut permeability and osteoarthritis, towards a mechanistic understanding of the pathogenesis: a systematic review. Ann Med 2021; 53:2380-2390. [PMID: 34933614 PMCID: PMC8725942 DOI: 10.1080/07853890.2021.2014557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/09/2022] Open
Abstract
Osteoarthritis (OA) is the most common condition affecting human joints. Along with mechanical and genetic factors, low-grade inflammation is increasingly supported as a causal factor in the development of OA. Gut microbiota and intestinal permeability, via the disruption of tight junction competency, are proposed to explain a gut-joint axis through the interaction with the host immune system. Since previous studies and methods have underestimated the role of the gut-joint axis in OA and have only focussed on the characterisation of microbiota phenotypes, this systematic review aims to appraise the current evidence concerning the influence of gut permeability in the pathogenesis of OA. We propose that the tight junction disruption may be due to an increase in zonulin activity as already demonstrated for many other chronic inflammatory disorders. After years of unreliable quantification, one study optimised the methodology, showing a positive validated correlation between plasma lipopolysaccharide (LPS), obesity, joint inflammation, and OA severity. Chemokines show a prominent role in pain development. Our systematic review confirms preliminary evidence supporting a gut-joint axis in OA pathogenesis and progression. Being modifiable by several factors, the gut microbiota is a promising target for treatment. We propose a pathogenetic model in which dysbiosis is correlated to the bipartite graph of tight junctions and bacterially-produced products, aiming to direct future studies in the search of other bacterial products and tight junction disassembly regulators.KEY MESSAGESPrevious studies and methods have underestimated the impact of the gut-joint axis in osteoarthritis and have focussed on the characterisation of microbiota phenotypes rather than clear molecular mediators of disease.Gut dysbiosis is related to higher levels of bacterial toxins that elicit cartilage and synovium inflammatory pathways.Future research may benefit from focussing on both tight junctions and bacterially-produced products.
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Affiliation(s)
- Giorgio Guido
- Department of General Surgery and Medical-Surgical Specialties, University of Catania, Catania, Italy
| | - Guido Ausenda
- Faculty of Medicine, University of Milan, Milan, Italy
| | - Veronica Iascone
- Experimental, Diagnostic and Specialty Medicine, University of Bologna, Bologna, Italy
| | - Emanuele Chisari
- Rothman Orthopaedic Institute at Thomas Jefferson University, Washington Township, NJ, USA
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Ding L, Zhou C, Zheng H, Wang Q, Song H, Buckwalter JA, Martin JA. Migrating Progenitor Cells Derived From Injured Cartilage Surface Respond to Damage-Associated Molecular Patterns. Cartilage 2021; 13:755S-765S. [PMID: 34636628 PMCID: PMC8804768 DOI: 10.1177/19476035211049559] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Revised: 08/30/2021] [Accepted: 09/05/2021] [Indexed: 12/26/2022] Open
Abstract
OBJECTIVE To delineate the response of migrating chondrogenic progenitor cells (CPCs) that arose from the surface of mechanically injured articular cartilage to proinflammatory damage-associated-molecular-patterns (DAMPs). DESIGN Bovine CPCs and non-CPC chondrocytes isolated from either impacted or scratched articular cartilage were studied. Those 2 types of cells were treated with mitochondrial DAMPs (MTDs; 10 nM fMLF and 10 µg/mL CpG DNA), or 10 nM HMGB1, or 10 ng/mL IL-1b for 24 hours. At the end of experiments, conditioned media and cell lysates were collected for analysis of expression levels of matrix metalloproteinases (MMPs), chemokines, and cytokines that are associated with cartilage degeneration with Western blotting and quantitative polymerase chain reaction. The difference of expression levels was compared by Welch's t-test. RESULTS Our data indicated that HMGB1 and MTDs remarkably upregulated pro-MMP-13 expression in CPCs. Compared with non-CPCs, CPCs expressed significantly more baseline mRNAs of MMP-13, CXCL12, and IL-6. MTDs greatly increased the expression of MMP-13 and IL-6 in CPCs by over 100-fold (P < 0.001). MTDs also significantly increased IL-8 expression in CPCs to a similar extent (P < 0.001). However, when IL-1b was present, CPCs expressed less MMP-3 and active MMP-13 proteins as well as less CCL2 and IL-6 than did non-CPCs. CONCLUSIONS We concluded that CPCs were more sensitive than non-CPCs in response to DAMPs, especially MTDs. The proinflammatory nature of CPCs implied their critical role in the early phase of posttraumatic osteoarthritis development.
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Affiliation(s)
- Lei Ding
- Department of Basic Medical Sciences,
Wuxi College of Medicine, Jiangnan University, Wuxi, Jiangsu, China
- Department of Orthopaedics and
Rehabilitation, University of Iowa Hospitals and Clinics, Iowa City, IA, USA
| | - Cheng Zhou
- Department of Orthopaedics and
Rehabilitation, University of Iowa Hospitals and Clinics, Iowa City, IA, USA
| | - Hongjun Zheng
- Department of Orthopaedics and
Rehabilitation, University of Iowa Hospitals and Clinics, Iowa City, IA, USA
| | - Quanming Wang
- Department of Orthopaedic Surgery,
Affiliated Hospital, Jiangnan University, Wuxi, Jiangsu, China
| | - Haiyan Song
- Department of Endocrinology and
Metabolism, The Second Affiliated Hospital of Harbin Medical University, Harbin,
China
| | - Joseph A. Buckwalter
- Department of Orthopaedics and
Rehabilitation, University of Iowa Hospitals and Clinics, Iowa City, IA, USA
- Veterans Affairs Medical Center, Iowa
City, IA, USA
| | - James A. Martin
- Department of Orthopaedics and
Rehabilitation, University of Iowa Hospitals and Clinics, Iowa City, IA, USA
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Vincent TL. Post-traumatic OA - are we any closer to prevention? Osteoarthritis Cartilage 2021; 29:1630-1631. [PMID: 34903334 DOI: 10.1016/j.joca.2021.10.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Accepted: 10/08/2021] [Indexed: 02/02/2023]
Affiliation(s)
- T L Vincent
- Centre for OA Pathogenesis Versus Arthritis, Kennedy Institute of Rheumatology, NDORMS, London OX37FY, United Kingdom.
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Basal and IL-1β enhanced chondrocyte chemotactic activity on monocytes are co-dependent on both IKKα and IKKβ NF-κB activating kinases. Sci Rep 2021; 11:21697. [PMID: 34737366 PMCID: PMC8568921 DOI: 10.1038/s41598-021-01063-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2021] [Accepted: 10/18/2021] [Indexed: 01/15/2023] Open
Abstract
IKKα and IKKβ are essential kinases for activating NF-κB transcription factors that regulate cellular differentiation and inflammation. By virtue of their small size, chemokines support the crosstalk between cartilage and other joint compartments and contribute to immune cell chemotaxis in osteoarthritis (OA). Here we employed shRNA retroviruses to stably and efficiently ablate the expression of each IKK in primary OA chondrocytes to determine their individual contributions for monocyte chemotaxis in response to chondrocyte conditioned media. Both IKKα and IKKβ KDs blunted both the monocyte chemotactic potential and the protein levels of CCL2/MCP-1, the chemokine with the highest concentration and the strongest association with monocyte chemotaxis. These findings were mirrored by gene expression analysis indicating that the lowest levels of CCL2/MCP-1 and other monocyte-active chemokines were in IKKαKD cells under both basal and IL-1β stimulated conditions. We find that in their response to IL-1β stimulation IKKαKD primary OA chondrocytes have reduced levels of phosphorylated NFkappaB p65pSer536 and H3pSer10. Confocal microscopy analysis revealed co-localized p65 and H3pSer10 nuclear signals in agreement with our findings that IKKαKD effectively blunts their basal level and IL-1β dependent increases. Our results suggest that IKKα could be a novel OA disease target.
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Pentosan polysulfate sodium prevents functional decline in chikungunya infected mice by modulating growth factor signalling and lymphocyte activation. PLoS One 2021; 16:e0255125. [PMID: 34492036 PMCID: PMC8423248 DOI: 10.1371/journal.pone.0255125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Accepted: 07/09/2021] [Indexed: 11/19/2022] Open
Abstract
Chikungunya virus (CHIKV) is an arthropod-borne virus that causes large outbreaks world-wide leaving millions of people with severe and debilitating arthritis. Interestingly, clinical presentation of CHIKV arthritides have many overlapping features with rheumatoid arthritis including cellular and cytokine pathways that lead to disease development and progression. Currently, there are no specific treatments or vaccines available to treat CHIKV infections therefore advocating the need for the development of novel therapeutic strategies to treat CHIKV rheumatic disease. Herein, we provide an in-depth analysis of an efficacious new treatment for CHIKV arthritis with a semi-synthetic sulphated polysaccharide, Pentosan Polysulfate Sodium (PPS). Mice treated with PPS showed significant functional improvement as measured by grip strength and a reduction in hind limb foot swelling. Histological analysis of the affected joint showed local inflammation was reduced as seen by a decreased number of infiltrating immune cells. Additionally, joint cartilage was protected as demonstrated by increased proteoglycan staining. Using a multiplex-immunoassay system, we also showed that at peak disease, PPS treatment led to a systemic reduction of the chemokines CXCL1, CCL2 (MCP-1), CCL7 (MCP-3) and CCL12 (MCP-5) which may be associated with the reduction in cellular infiltrates. Further characterisation of the local effect of PPS in its action to reduce joint and muscle inflammation was performed using NanoString™ technology. Results showed that PPS altered the local expression of key functional genes characterised for their involvement in growth factor signalling and lymphocyte activation. Overall, this study shows that PPS is a promising treatment for alphaviral arthritis by reducing inflammation and protecting joint integrity.
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Garriga C, Goff M, Paterson E, Hrusecka R, Hamid B, Alderson J, Leyland K, Honeyfield L, Greenshields L, Satchithananda K, Lim A, Arden NK, Judge A, Williams A, Vincent TL, Watt FE. Clinical and molecular associations with outcomes at 2 years after acute knee injury: a longitudinal study in the Knee Injury Cohort at the Kennedy (KICK). THE LANCET. RHEUMATOLOGY 2021; 3:e648-e658. [PMID: 34476411 PMCID: PMC8390381 DOI: 10.1016/s2665-9913(21)00116-8] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
BACKGROUND Joint injury is a major risk factor for osteoarthritis and provides an opportunity to prospectively examine early processes associated with osteoarthritis. We investigated whether predefined baseline demographic and clinical factors, and protein analytes in knee synovial fluid and in plasma or serum, were associated with clinically relevant outcomes at 2 years after knee injury. METHODS This longitudinal cohort study recruited individuals aged 16-50 years between Nov 1, 2010, and Nov 28, 2014, across six hospitals and clinics in London, UK. Participants were recruited within 8 weeks of having a clinically significant acute knee injury (effusion and structural injury on MRI), which was typically treated surgically. We measured several predefined clinical variables at baseline (eg, time from injury to sampling, extent and type of joint injury, synovial fluid blood staining, presence of effusion, self-reported sex, age, and BMI), and measured 12 synovial fluid and four plasma or serum biomarkers by immunoassay at baseline and 3 months. The primary outcome was Knee Injury and Osteoarthritis Outcome Score (KOOS4) at 2 years, adjusted for baseline score, assessed in all patients. Linear and logistic regression models adjusting for predefined covariates were used to assess associations between baseline variables and 2-year KOOS4. This study is registered with ClinicalTrials.gov, number NCT02667756. FINDINGS We enrolled 150 patients at a median of 17 days (range 1-59, IQR 9-26) after knee injury. 123 (82%) were male, with a median age of 25 years (range 16-50, IQR 21-30). 98 (65%) of 150 participants completed a KOOS4 at 2 (or 3) years after enrolment (50 participants were lost to follow-up and two were withdrawn due to adverse events unrelated to study participation); 77 (51%) participants had all necessary variables available and were included in the core variable adjusted analysis. In the 2-year dataset mean KOOS4 improved from 38 (SD 18) at baseline to 79 (18) at 2 years. Baseline KOOS4, medium-to-large knee effusion, and moderate-to-severe synovial blood staining and their interaction significantly predicted 2-year KOOS4 (n=77; coefficient -20·5, 95% CI -34·8 to -6·18; p=0·0060). The only predefined biomarkers that showed independent associations with 2-year KOOS4 were synovial fluid MCP-1 (n=77; -0·015, 0·027 to -0·004 per change in 1 pg/mL units; p=0·011) and IL-6 (n=77; -0·0005, -0·0009 to -0·0001 per change in 1 pg/mL units; p=0·017). These biomarkers, combined with the interaction of effusion and blood staining, accounted for 39% of outcome variability. Two adverse events occurred that were linked to study participation, both at the time of blood sampling (one presyncopal episode, one tenderness and pain at the site of venepuncture). INTERPRETATION The combination of effusion and haemarthrosis was significantly associated with symptomatic outcomes after acute knee injury. The synovial fluid molecular protein response to acute knee injury (best represented by MCP-1 and IL-6) was independently associated with symptomatic outcomes but not with structural outcomes, with the biomarkers overall playing a minor role relative to clinical predictors. The relationship between symptoms and structure after acute knee injury and their apparent dissociation early in this process need to be better understood to make clinical progress. FUNDING Versus Arthritis, Kennedy Trust for Rheumatology Research, and NIHR Oxford Biomedical Research Centre.
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Affiliation(s)
- Cesar Garriga
- Centre for Osteoarthritis Pathogenesis Versus Arthritis, Kennedy Institute of Rheumatology, NDORMS, University of Oxford, Oxford, UK
- Centre for Statistics in Medicine, NDORMS, University of Oxford, Oxford, UK
- Nuffield Department of Primary Care Health Sciences, University of Oxford, Oxford, UK
| | - Megan Goff
- Centre for Osteoarthritis Pathogenesis Versus Arthritis, Kennedy Institute of Rheumatology, NDORMS, University of Oxford, Oxford, UK
| | - Erin Paterson
- Centre for Osteoarthritis Pathogenesis Versus Arthritis, Kennedy Institute of Rheumatology, NDORMS, University of Oxford, Oxford, UK
| | - Renata Hrusecka
- Centre for Osteoarthritis Pathogenesis Versus Arthritis, Kennedy Institute of Rheumatology, NDORMS, University of Oxford, Oxford, UK
| | - Benjamin Hamid
- Centre for Osteoarthritis Pathogenesis Versus Arthritis, Kennedy Institute of Rheumatology, NDORMS, University of Oxford, Oxford, UK
| | - Jennifer Alderson
- Centre for Osteoarthritis Pathogenesis Versus Arthritis, Kennedy Institute of Rheumatology, NDORMS, University of Oxford, Oxford, UK
| | - Kirsten Leyland
- NIHR Bristol BRC, University Hospitals Bristol NHS Foundation Trust, Bristol, UK
| | - Lesley Honeyfield
- Department of Radiology, Charing Cross Hospital, Imperial College Healthcare NHS Trust, London, UK
| | - Liam Greenshields
- Department of Radiology, Charing Cross Hospital, Imperial College Healthcare NHS Trust, London, UK
| | - Keshthra Satchithananda
- Department of Radiology, Charing Cross Hospital, Imperial College Healthcare NHS Trust, London, UK
- Department of Radiology, King's College Hospital NHS Foundation Trust, London, UK
| | - Adrian Lim
- Department of Radiology, Charing Cross Hospital, Imperial College Healthcare NHS Trust, London, UK
| | - Nigel K Arden
- Centre for Osteoarthritis Pathogenesis Versus Arthritis, Kennedy Institute of Rheumatology, NDORMS, University of Oxford, Oxford, UK
- Centre for Sports, Exercise and Osteoarthritis Research Versus Arthritis, NDORMS, University of Oxford, Oxford, UK
| | - Andrew Judge
- Centre for Statistics in Medicine, NDORMS, University of Oxford, Oxford, UK
- NIHR Bristol BRC, University Hospitals Bristol NHS Foundation Trust, Bristol, UK
- Musculoskeletal Research Unit, University of Bristol, Bristol, UK
| | - Andrew Williams
- Centre for Osteoarthritis Pathogenesis Versus Arthritis, Kennedy Institute of Rheumatology, NDORMS, University of Oxford, Oxford, UK
- Fortius Clinic, London, UK
| | - Tonia L Vincent
- Centre for Osteoarthritis Pathogenesis Versus Arthritis, Kennedy Institute of Rheumatology, NDORMS, University of Oxford, Oxford, UK
- Department of Rheumatology, Charing Cross Hospital, Imperial College Healthcare NHS Trust, London, UK
| | - Fiona E Watt
- Centre for Osteoarthritis Pathogenesis Versus Arthritis, Kennedy Institute of Rheumatology, NDORMS, University of Oxford, Oxford, UK
- Centre for Sports, Exercise and Osteoarthritis Research Versus Arthritis, NDORMS, University of Oxford, Oxford, UK
- Department of Rheumatology, Charing Cross Hospital, Imperial College Healthcare NHS Trust, London, UK
- Department of Immunology and Inflammation, Imperial College London, London, UK
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Tao Z, Zhou Y, Zeng B, Yang X, Su M. MicroRNA-183 attenuates osteoarthritic pain by inhibiting the TGFα-mediated CCL2/ CCR2 signalling axis. Bone Joint Res 2021; 10:548-557. [PMID: 34463129 PMCID: PMC8414439 DOI: 10.1302/2046-3758.108.bjr-2019-0308.r2] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
AIMS MicroRNA-183 (miR-183) is known to play important roles in osteoarthritis (OA) pain. The aims of this study were to explore the specific functions of miR-183 in OA pain and to investigate the underlying mechanisms. METHODS Clinical samples were collected from patients with OA, and a mouse model of OA pain was constructed by surgically induced destabilization of the medial meniscus (DMM). Reverse transcription quantitative polymerase chain reaction was employed to measure the expression of miR-183, transforming growth factor α (TGFα), C-C motif chemokine ligand 2 (CCL2), proinflammatory cytokines (interleukin (IL)-6, IL-1β, and tumour necrosis factor-α (TNF-α)), and pain-related factors (transient receptor potential vanilloid subtype-1 (TRPV1), voltage-gated sodium 1.3, 1.7, and 1.8 (Nav1.3, Nav1.7, and Nav1.8)). Expression of miR-183 in the dorsal root ganglia (DRG) of mice was evaluated by in situ hybridization. TGFα, CCL2, and C-C chemokine receptor type 2 (CCR2) levels were examined by immunoblot analysis and interaction between miR-183 and TGFα, determined by luciferase reporter assay. The extent of pain in mice was measured using a behavioural assay, and OA severity assessed by Safranin O and Fast Green staining. Immunofluorescent staining was conducted to examine the infiltration of macrophages in mouse DRG. RESULTS miR-183 was downregulated in tissue samples from patients and mice with OA. In DMM mice, overexpression of miR-183 inhibited the expression of proinflammatory cytokines (IL-6, IL-1β, TNF-α) and pain-related factors (TRPV1, Nav1.3, Nav1.7, Nav1.8) in DRG. OA pain was relieved by miR-183-mediated inhibition of macrophage infiltration, and dual luciferase reporter assay demonstrated that miR-183 directly targeted TGFα. CONCLUSION Our data demonstrate that miR-183 can ameliorate OA pain by inhibiting the TGFα-CCL2/CCR2 signalling axis, providing an excellent therapeutic target for OA treatment. Cite this article: Bone Joint Res 2021;10(8):548-557.
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Affiliation(s)
- Zirong Tao
- Teaching and Research Section of Clinical Nursing, Xiangya Hospital of Central South University, Changsha, China
| | - Yang Zhou
- Teaching and Research Section of Clinical Nursing, Xiangya Hospital of Central South University, Changsha, China
| | - Biyun Zeng
- Teaching and Research Section of Clinical Nursing, Xiangya Hospital of Central South University, Changsha, China
| | - Xucheng Yang
- Department of Orthopedics, Xiangya Hospital of Central South University, Changsha, China
| | - Manman Su
- Teaching and Research Section of Clinical Nursing, Xiangya Hospital of Central South University, Changsha, China
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Andrographolide attenuates synovial inflammation of osteoarthritis by interacting with tumor necrosis factor receptor 2 trafficking in a rat model. J Orthop Translat 2021; 29:89-99. [PMID: 34094861 PMCID: PMC8144533 DOI: 10.1016/j.jot.2021.05.001] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Revised: 04/28/2021] [Accepted: 05/03/2021] [Indexed: 02/08/2023] Open
Abstract
Background Synovial inflammation plays a major role in the pathogenesis of osteoarthritis (OA). This study investigated the effect of andrographolide (Andro) on synovial inflammation mediated by tumor necrosis factor-alpha receptor 2 (TNFR2) trafficking and its utility in attenuating OA progression. Methods Knee joints were harvested from rats subjected to radial transection of the medial collateral ligament (MCLT) and medial meniscus (MMT) to examine the effect of Andro on synovial inflammation and OA progression. Quantitative real-time polymerase chain reaction was used to evaluate the expression of inflammatory factors in primary fibroblast-like synoviocytes (FLSs) after Andro treatment in vitro. The mechanism underlying Andro-mediated regulation of TNFR2 distribution and nuclear factor-κB (NF-κB) expression was verified using endosome maturation inhibitor hydroxychloroquine (HCQ) through flow cytometry, immunofluorescence, and western blot analysis. Results Andro treatment was found to reduce synovial inflammation and OA progression in vivo. Furthermore, a decrease in pain hypersensitivity and dorsal horn neuron activation was observed after treatment. Andro also downregulated the expression of inflammatory mediators and TNFR2 in FLSs. TNFR2 is crucial for the activation of the NF-κB signaling pathway, and Andro-induced degradation of TNFR2 was associated with lysosomal function, which in turn, reduced the downstream phosphorylation of p65 in the NF-κB signaling pathway. Conclusions Andro could suppress synovial inflammation via regulation of TNFR2 trafficking and degradation. This also suggests it could be a potential treatment for the prevention of synovial inflammation and OA progression. The translational potential of this article This study provides strong evidence that Andro reduces NF-κB activation and inflammatory responses in OA FLSs via regulation of TNFR2 trafficking. The inhibition of TNFR2 and Andro could be a novel therapeutic approach for OA and pain management.
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Abstract
There is a well-established historical observation that structural joint damage by plain X-ray correlates poorly with symptomatic disease in osteoarthritis (OA). This is often attributed to the inability to visualise soft-tissue pathology within the joint and the recognition of heterogeneous patient factors that drive central pain sensitisation. A major issue is the relative paucity of mechanistic studies in which molecular pathogenesis of pain is interrogated in relation to tissue pathology. Nonetheless, in recent years, three broad approaches have been deployed to attempt to address this: correlative clinical studies of peripheral and central pain outcomes using magnetic resonance imaging, where soft-tissue processes can be visualised; molecular studies on tissue from patients with OA; and careful molecular interrogation of preclinical models of OA across the disease time course. Studies have taken advantage of established clinical molecular targets such as nerve growth factor. Not only is the regulation of nerve growth factor within the joint being used to explore the relationship between tissue pathology and the origins of pain in OA, but it also provides a core model on which other molecules present within the joint can modulate the pain response. In this narrative review, how molecular and pathological tissue change relates to joint pain in OA will be discussed. Finally, a model for how tissue damage may lead to pain over the disease course will be proposed.
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Ishihara S, Obeidat AM, Wokosin DL, Ren D, Miller RJ, Malfait AM, Miller RE. The role of intra-articular neuronal CCR2 receptors in knee joint pain associated with experimental osteoarthritis in mice. Arthritis Res Ther 2021; 23:103. [PMID: 33827672 PMCID: PMC8025346 DOI: 10.1186/s13075-021-02486-y] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2020] [Accepted: 03/22/2021] [Indexed: 12/12/2022] Open
Abstract
Background C–C chemokine receptor 2 (CCR2) signaling plays a key role in pain associated with experimental murine osteoarthritis (OA) after destabilization of the medial meniscus (DMM). Here, we aimed to assess if CCR2 expressed by intra-articular sensory neurons contributes to knee hyperalgesia in the early stages of the model. Methods DMM surgery was performed in the right knee of 10-week-old male wild-type (WT), Ccr2 null, or Ccr2RFP C57BL/6 mice. Knee hyperalgesia was measured using a Pressure Application Measurement device. CCR2 receptor antagonist (CCR2RA) was injected systemically (i.p.) or intra-articularly (i.a.) at different times after DMM to test its ability to reverse knee hyperalgesia. In vivo Ca2+ imaging of the dorsal root ganglion (DRG) was performed to assess sensory neuron responses to CCL2 injected into the knee joint cavity. CCL2 protein in the knee was measured by ELISA. Ccr2RFP mice and immunohistochemical staining for the pan-neuronal marker, protein gene product 9.5 (PGP9.5), or the sensory neuron marker, calcitonin gene-related peptide (CGRP), were used to visualize the location of CCR2 on intra-articular afferents. Results WT, but not Ccr2 null, mice displayed knee hyperalgesia 2–16 weeks after DMM. CCR2RA administered i.p. alleviated established hyperalgesia in WT mice 4 and 8 weeks after surgery. Intra-articular injection of CCL2 excited sensory neurons in the L4-DRG, as determined by in vivo calcium imaging; responses to CCL2 increased in mice 20 weeks after DMM. CCL2, but not vehicle, injected i.a. rapidly caused transient knee hyperalgesia in naïve WT, but not Ccr2 null, mice. Intra-articular CCR2RA injection also alleviated established hyperalgesia in WT mice 4 and 7 weeks after surgery. CCL2 protein was elevated in the knees of both WT and Ccr2 null mice 4 weeks after surgery. Co-expression of CCR2 and PGP9.5 as well as CCR2 and CGRP was observed in the lateral synovium of naïve mice; co-expression was also observed in the medial compartment of knees 8 weeks after DMM. Conclusions The findings suggest that CCL2-CCR2 signaling locally in the joint contributes to knee hyperalgesia in experimental OA, and it is in part mediated through direct stimulation of CCR2 expressed by intra-articular sensory afferents. Supplementary Information The online version contains supplementary material available at 10.1186/s13075-021-02486-y.
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Affiliation(s)
- Shingo Ishihara
- Department of Internal Medicine, Division of Rheumatology, Rush University Medical Center, 1735 W Harrison St, Room 714, Chicago, IL, 60612, USA
| | - Alia M Obeidat
- Department of Internal Medicine, Division of Rheumatology, Rush University Medical Center, 1735 W Harrison St, Room 714, Chicago, IL, 60612, USA
| | - David L Wokosin
- Department of Physiology, Northwestern University, Chicago, IL, 60611, USA
| | - Dongjun Ren
- Department of Pharmacology, Northwestern University, Chicago, IL, 60611, USA
| | - Richard J Miller
- Department of Pharmacology, Northwestern University, Chicago, IL, 60611, USA
| | - Anne-Marie Malfait
- Department of Internal Medicine, Division of Rheumatology, Rush University Medical Center, 1735 W Harrison St, Room 714, Chicago, IL, 60612, USA
| | - Rachel E Miller
- Department of Internal Medicine, Division of Rheumatology, Rush University Medical Center, 1735 W Harrison St, Room 714, Chicago, IL, 60612, USA.
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Malfait AM, Miller RE, Miller RJ. Basic Mechanisms of Pain in Osteoarthritis: Experimental Observations and New Perspectives. Rheum Dis Clin North Am 2021; 47:165-180. [PMID: 33781488 DOI: 10.1016/j.rdc.2020.12.002] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The specific changes in the peripheral neuronal pathways underlying joint pain in osteoarthritis are the focus of this review. The plasticity of the nociceptive system in osteoarthritis and how this involves changes in the structural, physiologic, and genetic properties of neurons in pain pathways are discussed. The role of the neurotrophin, nerve growth factor, in these pathogenic processes is discussed. Finally, how neuronal pathways are modified by interaction with the degenerating joint tissues they innervate and with the innate immune system is considered. These extensive cellular interactions provide a substrate for identification of targets for osteoarthritis pain.
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Affiliation(s)
- Anne-Marie Malfait
- Department of Internal Medicine, Division of Rheumatology, Rush University Medical Center, Room 714, 1735 W Harrison Street, Chicago, IL 60612, USA.
| | - Rachel E Miller
- Department of Internal Medicine, Division of Rheumatology, Rush University Medical Center, Room 714, 1735 W Harrison Street, Chicago, IL 60612, USA
| | - Richard J Miller
- Department of Pharmacology, Northwestern University, Searle Building Room 8-510, 320 E Superior Street, Chicago, IL 60611, USA
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Zhu S, Liu M, Bennett S, Wang Z, Pfleger KDG, Xu J. The molecular structure and role of CCL2 (MCP-1) and C-C chemokine receptor CCR2 in skeletal biology and diseases. J Cell Physiol 2021; 236:7211-7222. [PMID: 33782965 DOI: 10.1002/jcp.30375] [Citation(s) in RCA: 47] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Revised: 02/23/2021] [Accepted: 03/12/2021] [Indexed: 12/12/2022]
Abstract
Monocyte chemoattractant protein-1, also called chemokine (C-C motif) ligand 2 (CCL2) or small inducible cytokine A2, is an inflammatory mediator capable of recruiting monocytes, memory T cells, and dendritic cells. CCL2 is a member of the CC chemokine superfamily, which binds to its receptor, C-C motif chemokine receptor-2 (CCR2), for the induction of chemotactic activity and an increase of calcium influx. It exerts multiple effects on a variety of cells, including monocytes, macrophages, osteoclasts, basophils, and endothelial cells, and is involved in a diverse range of diseases. This review discusses the molecular structure and role of CCL2 and CCR2 in skeletal biology and disease. Molecular structure analyses reveal that CCL2 shares a conserved C-C motif; however, it has only limited sequence homology with other CCL family members. Likewise, CCR2, as a member of the G-protein-coupled seven-transmembrane receptor superfamily, shares conserved cysteine residues, but exhibits very limited sequence homology with other CCR family members. In the skeletal system, the expression of CCL2 is regulated by a variety of factors, such as parathyroid hormone/parathyroid hormone-related peptide, interleukin 1b, tumor necrosis factor-α and transforming growth factor-beta, RANKL, and mechanical forces. The interaction of CCL2 and CCR2 activates several signaling cascades, including PI3K/Akt/ERK/NF-κB, PI3K/MAPKs, and JAK/STAT-1/STAT-3. Understanding the role of CCL2 and CCR2 will facilitate the development of novel therapies for skeletal disorders, including rheumatoid arthritis, osteolysis and other inflammatory diseases related to abnormal chemotaxis.
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Affiliation(s)
- Sipin Zhu
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China.,School of Biomedical Sciences, The University of Western Australia, Perth, Western Australia, Australia
| | - Mei Liu
- School of Biomedical Sciences, The University of Western Australia, Perth, Western Australia, Australia.,Jiangsu Key Laboratory for Molecular and Medical Biotechnology and College of Life Sciences, Nanjing Normal University, Nanjing, Jiangsu, China
| | - Samuel Bennett
- School of Biomedical Sciences, The University of Western Australia, Perth, Western Australia, Australia
| | - Ziyi Wang
- School of Biomedical Sciences, The University of Western Australia, Perth, Western Australia, Australia
| | - Kevin D G Pfleger
- Molecular Endocrinology and Pharmacology, Harry Perkins Institute of Medical Research, Nedlands, Western Australia, Australia.,Centre for Medical Research, The University of Western Australia, Perth, Western Australia, Australia.,UWA Node, Australian Research Council Centre for Personalised Therapeutics Technologies, Melbourne and Perth, Victoria and Western Australia, Australia
| | - Jiake Xu
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China.,School of Biomedical Sciences, The University of Western Australia, Perth, Western Australia, Australia
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Dansereau MA, Midavaine É, Bégin-Lavallée V, Belkouch M, Beaudet N, Longpré JM, Mélik-Parsadaniantz S, Sarret P. Mechanistic insights into the role of the chemokine CCL2/CCR2 axis in dorsal root ganglia to peripheral inflammation and pain hypersensitivity. J Neuroinflammation 2021; 18:79. [PMID: 33757529 PMCID: PMC7986025 DOI: 10.1186/s12974-021-02125-y] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Accepted: 03/05/2021] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Pain is reported as the leading cause of disability in the common forms of inflammatory arthritis conditions. Acting as a key player in nociceptive processing, neuroinflammation, and neuron-glia communication, the chemokine CCL2/CCR2 axis holds great promise for controlling chronic painful arthritis. Here, we investigated how the CCL2/CCR2 system in the dorsal root ganglion (DRG) contributes to the peripheral inflammatory pain sensitization. METHODS Repeated intrathecal (i.t.) administration of the CCR2 antagonist, INCB3344 was tested for its ability to reverse the nociceptive-related behaviors in the tonic formalin and complete Freund's adjuvant (CFA) inflammatory models. We further determined by qPCR the expression of CCL2/CCR2, SP and CGRP in DRG neurons from CFA-treated rats. Using DRG explants, acutely dissociated primary sensory neurons and calcium mobilization assay, we also assessed the release of CCL2 and sensitization of nociceptors. Finally, we examined by immunohistochemistry following nerve ligation the axonal transport of CCL2, SP, and CGRP from the sciatic nerve of CFA-treated rats. RESULTS We first found that CFA-induced paw edema provoked an increase in CCL2/CCR2 and SP expression in ipsilateral DRGs, which was decreased after INCB3344 treatment. This upregulation in pronociceptive neuromodulators was accompanied by an enhanced nociceptive neuron excitability on days 3 and 10 post-CFA, as revealed by the CCR2-dependent increase in intracellular calcium mobilization following CCL2 stimulation. In DRG explants, we further demonstrated that the release of CCL2 was increased following peripheral inflammation. Finally, the excitation of nociceptors following peripheral inflammation stimulated the anterograde transport of SP at their peripheral nerve terminals. Importantly, blockade of CCR2 reduced sensory neuron excitability by limiting the calcium mobilization and subsequently decreased peripheral transport of SP towards the periphery. Finally, pharmacological inhibition of CCR2 reversed the pronociceptive action of CCL2 in rats receiving formalin injection and significantly reduced the neurogenic inflammation as well as the stimuli-evoked and movement-evoked nociceptive behaviors in CFA-treated rats. CONCLUSIONS Our results provide significant mechanistic insights into the role of CCL2/CCR2 within the DRG in the development of peripheral inflammation, nociceptor sensitization, and pain hypersensitivity. We further unveil the therapeutic potential of targeting CCR2 for the treatment of painful inflammatory disorders.
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Affiliation(s)
- Marc-André Dansereau
- Département de Pharmacologie & Physiologie, Institut de Pharmacologie de Sherbrooke, Faculté de médecine et des sciences de la santé, Université de Sherbrooke, 3001, 12e Avenue Nord, Sherbrooke, Quebec, J1H 5N4, Canada
| | - Élora Midavaine
- Département de Pharmacologie & Physiologie, Institut de Pharmacologie de Sherbrooke, Faculté de médecine et des sciences de la santé, Université de Sherbrooke, 3001, 12e Avenue Nord, Sherbrooke, Quebec, J1H 5N4, Canada
| | - Valérie Bégin-Lavallée
- Département de Pharmacologie & Physiologie, Institut de Pharmacologie de Sherbrooke, Faculté de médecine et des sciences de la santé, Université de Sherbrooke, 3001, 12e Avenue Nord, Sherbrooke, Quebec, J1H 5N4, Canada
| | - Mounir Belkouch
- Département de Pharmacologie & Physiologie, Institut de Pharmacologie de Sherbrooke, Faculté de médecine et des sciences de la santé, Université de Sherbrooke, 3001, 12e Avenue Nord, Sherbrooke, Quebec, J1H 5N4, Canada
| | - Nicolas Beaudet
- Département de Pharmacologie & Physiologie, Institut de Pharmacologie de Sherbrooke, Faculté de médecine et des sciences de la santé, Université de Sherbrooke, 3001, 12e Avenue Nord, Sherbrooke, Quebec, J1H 5N4, Canada
| | - Jean-Michel Longpré
- Département de Pharmacologie & Physiologie, Institut de Pharmacologie de Sherbrooke, Faculté de médecine et des sciences de la santé, Université de Sherbrooke, 3001, 12e Avenue Nord, Sherbrooke, Quebec, J1H 5N4, Canada
| | - Stéphane Mélik-Parsadaniantz
- Centre de Recherche Institut de la Vision, Université Pierre et Marie Curie, INSERM, UMR_S968, CNRS, UMR_7210, Paris, France
| | - Philippe Sarret
- Département de Pharmacologie & Physiologie, Institut de Pharmacologie de Sherbrooke, Faculté de médecine et des sciences de la santé, Université de Sherbrooke, 3001, 12e Avenue Nord, Sherbrooke, Quebec, J1H 5N4, Canada.
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Neuroimmune interactions and osteoarthritis pain: focus on macrophages. Pain Rep 2021; 6:e892. [PMID: 33981927 PMCID: PMC8108586 DOI: 10.1097/pr9.0000000000000892] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2020] [Revised: 12/01/2020] [Accepted: 12/06/2020] [Indexed: 12/14/2022] Open
Abstract
Bidirectional interactions between the immune system and the nervous system are increasingly appreciated as playing a pathogenic role in chronic pain. Unraveling the mechanisms by which inflammatory pain is mediated through communication between nerves and immune cells may lead to exciting new strategies for therapeutic intervention. In this narrative review, we focus on the role of macrophages in the pathogenesis of osteoarthritis (OA) pain. From regulating homeostasis to conducting phagocytosis, and from inducing inflammation to resolving it, macrophages are plastic cells that are highly adaptable to their environment. They rely on communicating with the environment through cytokines, growth factors, neuropeptides, and other signals to respond to inflammation or injury. The contribution of macrophages to OA joint damage has garnered much attention in recent years. Here, we discuss how macrophages may participate in the initiation and maintenance of pain in OA. We aim to summarize what is currently known about macrophages in OA pain and identify important gaps in the field to fuel future investigations.
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Willcockson H, Ozkan H, Chubinskaya S, Loeser RF, Longobardi L. CCL2 induces articular chondrocyte MMP expression through ERK and p38 signaling pathways. OSTEOARTHRITIS AND CARTILAGE OPEN 2021; 3:100136. [PMID: 36475068 PMCID: PMC9718225 DOI: 10.1016/j.ocarto.2020.100136] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Accepted: 12/31/2020] [Indexed: 11/29/2022] Open
Abstract
Objective In previous studies, we determined an association between increased serum and articular cartilage levels of CCL2 with osteoarthritis (OA) progression, cartilage damage and increased MMP13 in cartilage. Here we analyzed CCL2 downstream signaling mediators that lead to gene expression of cartilage catabolic markers, in healthy and OA human articular chondrocytes. Design Human articular chondrocytes obtained from healthy or OA subjects were treated with or without recombinant human CCL2; cell lysates or mRNA were collected for immunoblotting or qRT-PCR. For pathway analysis, chondrocytes were pre-incubated with an inhibitor of CCR2 (the unique CCL2 receptor), ERK inhibitor or p38 inhibitor prior to CCL2 treatment. Results CCL2 treatment of both healthy and OA chondrocytes activated ERK and p38 via CCR2. In healthy chondrocytes, short (6h) and prolonged (24-72h) CCL2 treatments led to Ccr2, Mmp-1, Mmp-3, Mmp-13 and Timp1 upregulation. In OA chondrocytes, CCL2 induced expression of Ccr2, Mmp-1 and Mmp-3, but not Mmp1 and Timp1, and only following longer treatments (72h). In both healthy and OA chondrocytes, the CCL2-mediated upregulation of Ccr2 and cartilage catabolic markers was mediated by ERK and p38 signaling. Conclusions The triggering of the CCL2/CCR2 axis in articular chondrocytes activates specific MAPK pathways leading to gene expression of cartilage degrading enzymes. However, some differences in the response to CCL2 stimulation are detected in healthy vs OA chondrocytes with respect to the number of activated genes and to the time of exposure to CCL2, suggesting that CCL2 action in articular cartilage may be dependent on OA stage and severity.
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Affiliation(s)
- Helen Willcockson
- Division of Rheumatology, Allergy and Immunology and the Thurston Arthritis Research Center, University of North Carolina-Chapel Hill, NC, USA
| | - Huseyin Ozkan
- Division of Rheumatology, Allergy and Immunology and the Thurston Arthritis Research Center, University of North Carolina-Chapel Hill, NC, USA
| | - Susan Chubinskaya
- Department of Pediatrics, Rush University Medical Center, Chicago, IL, USA
| | - Richard F. Loeser
- Division of Rheumatology, Allergy and Immunology and the Thurston Arthritis Research Center, University of North Carolina-Chapel Hill, NC, USA
| | - Lara Longobardi
- Division of Rheumatology, Allergy and Immunology and the Thurston Arthritis Research Center, University of North Carolina-Chapel Hill, NC, USA
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Small Extracellular Vesicles from adipose derived stromal cells significantly attenuate in vitro the NF-κB dependent inflammatory/catabolic environment of osteoarthritis. Sci Rep 2021; 11:1053. [PMID: 33441764 PMCID: PMC7806716 DOI: 10.1038/s41598-020-80032-7] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2020] [Accepted: 12/15/2020] [Indexed: 12/21/2022] Open
Abstract
The therapeutic ability of Mesenchymal Stem/Stromal Cells to address osteoarthritis (OA) is mainly related to the secretion of biologically active factors, which can be found within their secreted Extracellular Vesicles including small Extracellular Vesicles (sEV). Aim of this study was to investigate the effects of sEV from adipose derived stromal cells (ADSC) on both chondrocytes and synoviocytes, in order to gain insights into the mechanisms modulating the inflammatory/catabolic OA environment. sEV, obtained by a combined precipitation and size exclusion chromatography method, were quantified and characterized, and administered to chondrocytes and synoviocytes stimulated with IL-1β. Cellular uptake of sEV was evaluated from 1 to 12 h. Gene expression and protein release of cytokines/chemokines, catabolic and inflammatory molecules were analyzed at 4 and 15 h, when p65 nuclear translocation was investigated to study NF-κB pathway. This study underlined the potential of ADSC derived sEV to affect gene expression and protein release of both chondrocytes and synoviocytes, counteracting IL-1β induced inflammatory effects, and provided insights into their mechanisms of action. sEV uptake was faster in synoviocytes, where it also elicited stronger effects, especially in terms of cytokine and chemokine modulation. The inflammatory/catabolic environment mediated by NF-κB pathway was significantly attenuated by sEV, which hold promise as new therapeutic strategy to address OA.
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Abstract
PURPOSE OF REVIEW Current thinking in the study of posttraumatic osteoarthritis (PTOA) is overviewed: the osteoarthritis which follows acute joint injury. The review particularly highlights important publications in the last 18 months, also reflecting on key older literature, in terms of what have we have we learned and have yet to learn from PTOA, which can advance the osteoarthritis field as a whole. RECENT FINDINGS PTOA is a mechanically driven disease, giving insight into mechanical drivers for osteoarthritis. A mechanosensitive molecular tissue injury response (which includes activation of pain, degradative and also repair pathways) is triggered by acute joint injury and seen in osteoarthritis. Imaging features of PTOA are highly similar to osteoarthritis, arguing against it being a different phenotype. The inflammatory pathways activated by injury contribute to early joint symptoms. However, later structural changes appear to be dissociated from traditional measures of synovial inflammation. SUMMARY PTOA remains an important niche in which to understand processes underlying osteoarthritis and seek interventional targets. Whether PTOA has true molecular or clinical differences to osteoarthritis as a whole remains to be understood. This knowledge is important for a field where animal modelling of the disease relies heavily on the link between injury and osteoarthritis.
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Affiliation(s)
- Fiona E Watt
- Centre for Osteoarthritis Pathogenesis Versus Arthritis, Kennedy Institute of Rheumatology, Nuffield Department of Orthopaedics, Rheumatology, and Musculoskeletal Sciences, University of Oxford, Oxford, UK
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Culley KL, Singh P, Lessard S, Wang M, Rourke B, Goldring MB, Otero M. Mouse Models of Osteoarthritis: Surgical Model of Post-traumatic Osteoarthritis Induced by Destabilization of the Medial Meniscus. Methods Mol Biol 2021; 2221:223-260. [PMID: 32979207 DOI: 10.1007/978-1-0716-0989-7_14] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The surgical model of destabilization of the medial meniscus (DMM) has become a gold standard for studying the onset and progression of post-traumatic osteoarthritis (OA). The DMM model mimics clinical meniscal injury, a known predisposing factor for the development of human OA, and permits the study of structural and biological changes over the course of the disease. In addition, when applied to genetically modified or engineered mouse models, this surgical procedure permits dissection of the relative contribution of a given gene to OA initiation and/or progression. This chapter describes the requirements for the surgical induction of OA in mouse models, and provides guidelines and tools for the subsequent histological, immunohistochemical, and molecular analyses. Methods for the assessment of the contributions of selected genes in genetically modified strains are also provided.
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Affiliation(s)
- Kirsty L Culley
- Orthopedic Soft Tissue Research Program, HSS Research Institute, The Hospital for Special Surgery, New York, NY, USA
| | - Purva Singh
- Orthopedic Soft Tissue Research Program, HSS Research Institute, The Hospital for Special Surgery, New York, NY, USA
| | - Samantha Lessard
- Orthopedic Soft Tissue Research Program, HSS Research Institute, The Hospital for Special Surgery, New York, NY, USA
| | - Mengying Wang
- Orthopedic Soft Tissue Research Program, HSS Research Institute, The Hospital for Special Surgery, New York, NY, USA
| | - Brennan Rourke
- Orthopedic Soft Tissue Research Program, HSS Research Institute, The Hospital for Special Surgery, New York, NY, USA
| | - Mary B Goldring
- Orthopedic Soft Tissue Research Program, HSS Research Institute, The Hospital for Special Surgery, New York, NY, USA
| | - Miguel Otero
- Orthopedic Soft Tissue Research Program, HSS Research Institute, The Hospital for Special Surgery, New York, NY, USA.
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Ita ME, Ghimire P, Welch RL, Troche HR, Winkelstein BA. Intra-articular collagenase in the spinal facet joint induces pain, DRG neuron dysregulation and increased MMP-1 absent evidence of joint destruction. Sci Rep 2020; 10:21965. [PMID: 33319791 PMCID: PMC7738551 DOI: 10.1038/s41598-020-78811-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2020] [Accepted: 11/17/2020] [Indexed: 12/11/2022] Open
Abstract
Degeneration is a hallmark of painful joint disease and is mediated by many proteases that degrade joint tissues, including collagenases. We hypothesized that purified bacterial collagenase would initiate nociceptive cascades in the joint by degrading the capsular ligament's matrix and activating innervating pain fibers. Intra-articular collagenase in the rat facet joint was investigated for its effects on behavioral sensitivity, joint degeneration, and nociceptive pathways in the peripheral and central nervous systems. In parallel, a co-culture collagen gel model of the ligament was used to evaluate effects of collagenase on microscale changes to the collagen fibers and embedded neurons. Collagenase induced sensitivity within one day, lasting for 3 weeks (p < 0.001) but did not alter ligament structure, cartilage health, or chondrocyte homeostasis. Yet, nociceptive mediators were increased in the periphery (substance P, pERK, and MMP-1; p ≤ 0.039) and spinal cord (substance P and MMP-1; p ≤ 0.041). The collagen loss (p = 0.008) induced by exposing co-cultures to collagenase was accompanied by altered neuronal activity (p = 0.002) and elevated neuronal MMP-1 (p < 0.001), suggesting microscale collagen degradation mediates sensitivity in vivo. The induction of sustained sensitivity and nociception without joint damage may explain the clinical disconnect in which symptomatic joint pain patients present without radiographic evidence of joint destruction.
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Affiliation(s)
- Meagan E Ita
- Department of Bioengineering, University of Pennsylvania, 210 S. 33rd Street, 240 Skirkanich Hall, Philadelphia, PA, 19104-6392, USA
| | - Prabesh Ghimire
- Department of Bioengineering, University of Pennsylvania, 210 S. 33rd Street, 240 Skirkanich Hall, Philadelphia, PA, 19104-6392, USA
| | - Rachel L Welch
- Department of Bioengineering, University of Pennsylvania, 210 S. 33rd Street, 240 Skirkanich Hall, Philadelphia, PA, 19104-6392, USA
| | - Harrison R Troche
- Department of Bioengineering, University of Pennsylvania, 210 S. 33rd Street, 240 Skirkanich Hall, Philadelphia, PA, 19104-6392, USA
| | - Beth A Winkelstein
- Department of Bioengineering, University of Pennsylvania, 210 S. 33rd Street, 240 Skirkanich Hall, Philadelphia, PA, 19104-6392, USA.
- Department of Neurosurgery, University of Pennsylvania, Philadelphia, PA, 19104, USA.
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Ren G, Al-Jezani N, Railton P, Powell JN, Krawetz RJ. CCL22 induces pro-inflammatory changes in fibroblast-like synoviocytes. iScience 2020; 24:101943. [PMID: 33490888 PMCID: PMC7809191 DOI: 10.1016/j.isci.2020.101943] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Revised: 11/18/2020] [Accepted: 12/10/2020] [Indexed: 01/23/2023] Open
Abstract
Synovitis is common in patients with osteoarthritis (OA) and is associated with pain and disease progression. We have previously demonstrated that the chemokine C-C motif chemokine 22 (CCL22) induces chondrocyte apoptosis in vitro; however, the effects of CCL22 on the synovium remain unknown. Therefore, our goal was to investigate the effect of CCL22 on fibroblast-like synoviocytes (FLS). CCL22 treatment suppressed expression of IL-4 and IL-10 and promoted expression of S100A12 in FLS. The response of FLS to CCL22 was not dependent on the disease state of the joint (e.g., normal versus OA), but was instead correlated with the individuals' synovial fluid level of CCL22. CCL22 induction of S100A12 in FLS was attenuated after knockdown of CCR3, yet ligands of CCR3 (CCL7, CCL11) did not induce S100A12 expression. In the presence of CCL22, CCR3-positive FLS upregulate CCL22 and S100A12 driving a potential feedforward pro-inflammatory mechanism distinct from canonical CCL22 and CCR3 pathways.
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Affiliation(s)
- Guomin Ren
- McCaig Institute for Bone & Joint Health, Faculty of Medicine, University of Calgary, 3330 Hospital Drive NW, Calgary, AB T2N 4N1, Canada.,University of Calgary, Biomedical Engineering Graduate Program, Calgary, AB T2N 4N1, Canada
| | - Nedaa Al-Jezani
- McCaig Institute for Bone & Joint Health, Faculty of Medicine, University of Calgary, 3330 Hospital Drive NW, Calgary, AB T2N 4N1, Canada
| | - Pamela Railton
- Charles Sturt University, School of Biomedical Science, Wagga Wagga, NSW 2650, Australia
| | - James N Powell
- McCaig Institute for Bone & Joint Health, Faculty of Medicine, University of Calgary, 3330 Hospital Drive NW, Calgary, AB T2N 4N1, Canada.,University of Calgary, Department of Surgery, Calgary, AB T2N 4N1, Canada
| | - Roman J Krawetz
- McCaig Institute for Bone & Joint Health, Faculty of Medicine, University of Calgary, 3330 Hospital Drive NW, Calgary, AB T2N 4N1, Canada.,University of Calgary, Biomedical Engineering Graduate Program, Calgary, AB T2N 4N1, Canada.,University of Calgary, Department of Surgery, Calgary, AB T2N 4N1, Canada.,University of Calgary, Department of Anatomy and Cell Biology, Calgary, AB T2N 4N1, Canada
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von Loga IS, Miotla-Zarebska J, Huang YS, Williams R, Jostins L, Vincent TL. Comparison of LABORAS with static incapacitance testing for assessing spontaneous pain behaviour in surgically-induced murine osteoarthritis. OSTEOARTHRITIS AND CARTILAGE OPEN 2020; 2:100101. [PMID: 33381766 PMCID: PMC7762826 DOI: 10.1016/j.ocarto.2020.100101] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2019] [Accepted: 09/15/2020] [Indexed: 12/31/2022] Open
Abstract
Objective Evoked responses following mechanical or thermal stimulation are typically used to assess pain behaviour in murine osteoarthritis (OA). However, there is no consensus on how best to measure spontaneous pain behaviour. Method OA by partial meniscectomy (PMX), or sham surgery was performed in 10-week old C57BL/6 male mice. Collagen-induced arthritis (CIA) was induced in 10 week old DBA1 male mice. Spontaneous pain behaviour, either at the time of active inflammatory disease (CIA), or over the 12 weeks after induction of OA, was assessed by static incapacitance testing (measuring percentage of weight placed through each hindlimb), and Laboratory Animal Behaviour Observation Registration and Analysis System (LABORAS) (translating cage vibrations of singly house animals into specific activities). Data were analysed by repeated measures two way ANOVA with post hoc testing comparing experimental groups with either sham operated or naïve controls. Results By incapacitance testing, two phases of painful behaviour were evident after PMX: a transient, post-operative phase, which resolved within one week, and a late OA pain phase starting 8 weeks post surgery and reaching statistical significance at week 12 (95% CI: sham 89.51-98.19, PMX 76.18-98.16). LABORAS, was able to detect pain behaviour in mice with CIA, but no statistically significant pain behaviour was observed in OA mice either post operatively (once analgesia had been controlled for) or at any later time points for any activity compared with the sham group. Conclusion Static incapacitance testing is superior to LABORAS for measuring spontaneous pain behaviour in surgically induced murine OA.
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Affiliation(s)
- Isabell S von Loga
- Centre for Osteoarthritis Pathogenesis Versus Arthritis, Kennedy Institute of Rheumatology, University of Oxford, Roosevelt Drive, Oxford, UK
| | - Jadwiga Miotla-Zarebska
- Centre for Osteoarthritis Pathogenesis Versus Arthritis, Kennedy Institute of Rheumatology, University of Oxford, Roosevelt Drive, Oxford, UK
| | - Yi-Shu Huang
- Kennedy Institute of Rheumatology, University of Oxford, Roosevelt Drive, Oxford, UK
| | - Richard Williams
- Kennedy Institute of Rheumatology, University of Oxford, Roosevelt Drive, Oxford, UK
| | - Luke Jostins
- Kennedy Institute of Rheumatology, University of Oxford, Roosevelt Drive, Oxford, UK
| | - Tonia L Vincent
- Centre for Osteoarthritis Pathogenesis Versus Arthritis, Kennedy Institute of Rheumatology, University of Oxford, Roosevelt Drive, Oxford, UK
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