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Zhao M, Qiu D, Miao X, Yang W, Li S, Cheng X, Tang J, Chen H, Ruan H, Liu Y, Wei C, Xiao J. Melatonin Delays Arthritis Inflammation and Reduces Cartilage Matrix Degradation through the SIRT1-Mediated NF-κB/Nrf2/TGF-β/BMPs Pathway. Int J Mol Sci 2024; 25:6202. [PMID: 38892389 PMCID: PMC11172638 DOI: 10.3390/ijms25116202] [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: 05/17/2024] [Revised: 05/26/2024] [Accepted: 05/28/2024] [Indexed: 06/21/2024] Open
Abstract
Cartilage, a flexible and smooth connective tissue that envelops the surfaces of synovial joints, relies on chondrocytes for extracellular matrix (ECM) production and the maintenance of its structural and functional integrity. Melatonin (MT), renowned for its anti-inflammatory and antioxidant properties, holds the potential to modulate cartilage regeneration and degradation. Therefore, the present study was devoted to elucidating the mechanism of MT on chondrocytes. The in vivo experiment consisted of three groups: Sham (only the skin tissue was incised), Model (using the anterior cruciate ligament transection (ACLT) method), and MT (30 mg/kg), with sample extraction following 12 weeks of administration. Pathological alterations in articular cartilage, synovium, and subchondral bone were evaluated using Safranin O-fast green staining. Immunohistochemistry (ICH) analysis was employed to assess the expression of matrix degradation-related markers. The levels of serum cytokines were quantified via Enzyme-linked immunosorbent assay (ELISA) assays. In in vitro experiments, primary chondrocytes were divided into Control, Model, MT, negative control, and inhibitor groups. Western blotting (WB) and Quantitative RT-PCR (q-PCR) were used to detect Silent information regulator transcript-1 (SIRT1)/Nuclear factor kappa-B (NF-κB)/Nuclear factor erythroid-2-related factor 2 (Nrf2)/Transforming growth factor-beta (TGF-β)/Bone morphogenetic proteins (BMPs)-related indicators. Immunofluorescence (IF) analysis was employed to examine the status of type II collagen (COL2A1), SIRT1, phosphorylated NF-κB p65 (p-p65), and phosphorylated mothers against decapentaplegic homolog 2 (p-Smad2). In vivo results revealed that the MT group exhibited a relatively smooth cartilage surface, modest chondrocyte loss, mild synovial hyperplasia, and increased subchondral bone thickness. ICH results showed that MT downregulated the expression of components related to matrix degradation. ELISA results showed that MT reduced serum inflammatory cytokine levels. In vitro experiments confirmed that MT upregulated the expression of SIRT1/Nrf2/TGF-β/BMPs while inhibiting the NF-κB pathway and matrix degradation-related components. The introduction of the SIRT1 inhibitor Selisistat (EX527) reversed the effects of MT. Together, these findings suggest that MT has the potential to ameliorate inflammation, inhibit the release of matrix-degrading enzymes, and improve the cartilage condition. This study provides a new theoretical basis for understanding the role of MT in decelerating cartilage degradation and promoting chondrocyte repair in in vivo and in vitro cultured chondrocytes.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | - Jianhua Xiao
- Heilongjiang Key Laboratory Animals and Comparative Medicine, College of Veterinary Medicine, Northeast Agricultural University, Harbin 150030, China; (M.Z.); (D.Q.); (X.M.); (W.Y.); (S.L.); (X.C.); (J.T.); (H.C.); (H.R.); (Y.L.); (C.W.)
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Lee SG, Kang H. Protective Effects of a Mixed Medicinal Herb Extract (NUC1) on Collagenase-Induced Osteoarthritis in Rabbits. J Microbiol Biotechnol 2023; 33:1484-1494. [PMID: 37482815 DOI: 10.4014/jmb.2303.03044] [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: 03/29/2023] [Revised: 07/05/2023] [Accepted: 07/12/2023] [Indexed: 07/25/2023]
Abstract
NUC1 (Nutraceutical compound 1) is an ethanol extract composed of a formulation based on medicinal herbs traditionally used for the treatment of arthritis in Korea and China. This study investigated the therapeutic effects of NUC1 on osteoarthritis (OA). The protective effect of NUC1 on OA was tested in a rabbit model of collagenase-induced arthritis (CIA) for 4 weeks. Results were compared among four groups (n = 9 per group): the normal group (untreated), the CIA group (vehicle control), the NUC1 group (CIA rabbits treated with 200 mg/kg NUC1), and the JOINS group (positive control, CIA rabbits treated with 200 mg/kg JOINS tablet). NUC1 significantly inhibited NO production (p < 0.05 at 125 μg/ml, p < 0.01 at 250 μg/ml, and p < 0.001 at 500 μg/ml) and iNOS expression in macrophages, in a concentration-dependent manner. NUC1 also inhibited the release and protein expression of MMP-1, 3, and 13, in TNF-α-induced chondrosarcoma cells in a concentration-dependent manner. In vivo, the MMP-1 and MMP-3 levels in synovial fluids were significantly (p < 0.05) lower in NUC1 group (77.50 ± 20.56 and 22.50 ± 7.39 pg/ml, respectively) than in the CIA group (148.33 ± 68.58 and 77.50 ± 20.46 pg/ml, respectively). Also, in histopathological, NUC1 ameliorated articular cartilage damage in OA by increasing the abundance of chondrocytes and proteoglycan in the articular cartilage. Thus, NUC1 showed promise as a potential therapeutic agent, and it can be generalized to a broader study population in different OA animal models.
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Affiliation(s)
- Sung-Gyu Lee
- Department of Medical Laboratory Science, College of Health Science, Dankook University, Cheonan 31116, Republic of Korea
| | - Hyun Kang
- Department of Medical Laboratory Science, College of Health Science, Dankook University, Cheonan 31116, Republic of Korea
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Wu XC, Zhu ZH, Zhang JP, Shao FM, Peng JQ, Chen Y, Wang XZ, Li WY, Cao YL, Feng W, Xu JG, Ding DF. Identification of thrombin as a key regulator of chondrocyte catabolic activity through RNA-Seq and experimental verification. Gene X 2022; 823:146327. [PMID: 35219816 DOI: 10.1016/j.gene.2022.146327] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 12/29/2021] [Accepted: 02/11/2022] [Indexed: 11/13/2022] Open
Abstract
The present study was designed to explore the relationship between thrombin and catabolic activity in chondrocytes. Primary rat chondrocytes were cultured for 24 h with rat serum (RS), rat plasma (RP), or rat plasma supplemented with thrombin (RPT). RNA-sequencing was then performed. Cell proliferation was analyzed by EdU uptake, CCK-8 assays and protein-protein interaction (PPI) network of proliferation-related genes. Heatmaps were used to visualize differences in gene expression. Gene Ontology (GO) enrichment analyses of up- and down-regulated differentially expressed genes were conducted. Molecular probes were used to label the endoplasmic reticulum in chondrocytes from three treatment groups. Immunofluorescence and Safranin O staining were used to assess type II collagen (Col2a1) expression and proteoglycan synthesis, whereas Lox expression was assessed by immunocytochemistry. The expression of enzymes involved in the synthesis and maturation of extracellular matrix (ECM) components and chemokines were measured by qPCR while matrix metalloproteinases (MMPs) levels were evaluated by Western blotting. Relevant nodules were selected through further PPI network analyses. A total of 727 and 1162 genes were up- and down-regulated based on the Venn diagrams comparison among groups. Thrombin was thus able to promote chondrocyte proliferation and a shift towards fibrotic morphology, while upregulating MMPs and chemokines linked to ECM degradation. In addition, thrombin decreased the enzyme expression involved in the synthesis and maturation of ECM.
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Affiliation(s)
- Xi-Chen Wu
- Center of Rehabilitation Medicine, Yueyang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China; School of Rehabilitation Science, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Zhi-Heng Zhu
- Center of Rehabilitation Medicine, Yueyang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China; School of Rehabilitation Science, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Jun-Peng Zhang
- Center of Rehabilitation Medicine, Yueyang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China; School of Rehabilitation Science, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Fu-Ming Shao
- Center of Rehabilitation Medicine, Yueyang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China; School of Rehabilitation Science, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Jing-Qiu Peng
- Center of Rehabilitation Medicine, Yueyang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China; School of Rehabilitation Science, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Yan Chen
- Shi's Center of Orthopedics and Traumatology, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Xue-Zong Wang
- Shi's Center of Orthopedics and Traumatology, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Wen-Yao Li
- Center of Rehabilitation Medicine, Yueyang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China; School of Rehabilitation Science, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Yue-Long Cao
- Shi's Center of Orthopedics and Traumatology, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China
| | - Wei Feng
- Center of Rehabilitation Medicine, Yueyang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China; School of Rehabilitation Science, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Jian-Guang Xu
- Center of Rehabilitation Medicine, Yueyang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China; School of Rehabilitation Science, Shanghai University of Traditional Chinese Medicine, Shanghai, China.
| | - Dao-Fang Ding
- Center of Rehabilitation Medicine, Yueyang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, China; School of Rehabilitation Science, Shanghai University of Traditional Chinese Medicine, Shanghai, China.
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Ding DF, Xue Y, Zhang JP, Zhang ZQ, Li WY, Cao YL, Xu JG. Similarities and differences between rat and mouse chondrocyte gene expression induced by IL-1β. J Orthop Surg Res 2022; 17:70. [PMID: 35120538 PMCID: PMC8815127 DOI: 10.1186/s13018-021-02889-2] [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] [Received: 10/13/2021] [Accepted: 12/14/2021] [Indexed: 11/15/2022] Open
Abstract
Background Osteoarthritis (OA) is the most prevalent degenerative joint disease. In vitro experiments are an intuitive method used to investigate its early pathogenesis. Chondrocyte inflammation models in rats and mice are often used as in vitro models of OA. However, similarities and differences between them in the early stages of inflammation have not been reported. Objective This paper seeks to compare the chondrocyte phenotype of rats and mice in the early inflammatory state and identify chondrocytes suitable for the study of early OA. Methods Under similar conditions, chondrocytes from rats and mice were stimulated using the same IL-1β concentration for a short period of time. The phenotypic changes of chondrocytes were observed under a microscope. The treated chondrocytes were subjected to RNA-seq to identify similarities and differences in gene expression. Chondrocytes were labelled with EdU for proliferation analysis. Cell proliferation-associated proteins, including minichromosome maintenance 2 (MCM2), minichromosome maintenance 5 (MCM5), Lamin B1, proliferating cell nuclear antigen (PCNA), and Cyclin D1, were analysed by immunocytochemical staining, cell immunofluorescence, and Western blots to verify the RNA-seq results. Results RNA-seq revealed that the expression patterns of cytokines, chemokines, matrix metalloproteinases, and collagen were similar between the rat and mouse chondrocyte inflammation models. Nonetheless, the expression of proliferation-related genes showed the opposite pattern. The RNA-seq results were further verified by subsequent experiments. The expression levels of MCM2, MCM5, Lamin B1, PCNA, and Cyclin D1 were significantly upregulated in rat chondrocytes (P < 0.05) and mouse chondrocytes (P < 0.05). Conclusions Based on the findings, the rat chondrocyte inflammation model may help in the study of the early pathological mechanism of OA. Supplementary Information The online version contains supplementary material available at 10.1186/s13018-021-02889-2.
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Affiliation(s)
- Dao-Fang Ding
- School of Rehabilitation Science, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China.,Center of Rehabilitation Medicine, Yueyang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, 200437, China
| | - Yan Xue
- Shanghai Yangzhi Rehabilitation Hospital (Shanghai Sunshine Rehabilitation Centre), Tongji University School of Medicine, Shanghai, 201613, China
| | - Jun-Peng Zhang
- School of Rehabilitation Science, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China.,Center of Rehabilitation Medicine, Yueyang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, 200437, China
| | - Zeng-Qiao Zhang
- Center of Rehabilitation Medicine, Yueyang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, 200437, China
| | - Wen-Yao Li
- School of Rehabilitation Science, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China.,Center of Rehabilitation Medicine, Yueyang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, 200437, China
| | - Yue-Long Cao
- Shi's Center of Orthopedics and Traumatology, Shuguang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
| | - Jian-Guang Xu
- School of Rehabilitation Science, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China. .,Center of Rehabilitation Medicine, Yueyang Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, 200437, China.
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Kwon DG, Kim MK, Jeon YS, Nam YC, Park JS, Ryu DJ. State of the Art: The Immunomodulatory Role of MSCs for Osteoarthritis. Int J Mol Sci 2022; 23:1618. [PMID: 35163541 PMCID: PMC8835711 DOI: 10.3390/ijms23031618] [Citation(s) in RCA: 29] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 01/21/2022] [Accepted: 01/27/2022] [Indexed: 01/15/2023] Open
Abstract
Osteoarthritis (OA) has generally been introduced as a degenerative disease; however, it has recently been understood as a low-grade chronic inflammatory process that could promote symptoms and accelerate the progression of OA. Current treatment strategies, including corticosteroid injections, have no impact on the OA disease progression. Mesenchymal stem cells (MSCs) based therapy seem to be in the spotlight as a disease-modifying treatment because this strategy provides enlarged anti-inflammatory and chondroprotective effects. Currently, bone marrow, adipose derived, synovium-derived, and Wharton's jelly-derived MSCs are the most widely used types of MSCs in the cartilage engineering. MSCs exert immunomodulatory, immunosuppressive, antiapoptotic, and chondrogenic effects mainly by paracrine effect. Because MSCs disappear from the tissue quickly after administration, recently, MSCs-derived exosomes received the focus for the next-generation treatment strategy for OA. MSCs-derived exosomes contain a variety of miRNAs. Exosomal miRNAs have a critical role in cartilage regeneration by immunomodulatory function such as promoting chondrocyte proliferation, matrix secretion, and subsiding inflammation. In the future, a personalized exosome can be packaged with ideal miRNA and proteins for chondrogenesis by enriching techniques. In addition, the target specific exosomes could be a gamechanger for OA. However, we should consider the off-target side effects due to multiple gene targets of miRNA.
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Affiliation(s)
| | | | | | | | | | - Dong Jin Ryu
- Orthopedic Surgery, Inha University Hospital, 22332 Inhang-ro 27, Jung-gu, Incheon 22332, Korea; (D.G.K.); (M.K.K.); (Y.S.J.); (Y.C.N.); (J.S.P.)
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Lu KH, Lu PWA, Lu EWH, Tang CH, Su SC, Lin CW, Yang SF. The potential remedy of melatonin on osteoarthritis. J Pineal Res 2021; 71:e12762. [PMID: 34435392 DOI: 10.1111/jpi.12762] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Revised: 08/16/2021] [Accepted: 08/21/2021] [Indexed: 01/15/2023]
Abstract
Osteoarthritis (OA), the most common arthritis worldwide, is a degenerative joint disease characterized by progressive cartilage breakdown, subchondral remodeling, and synovial inflammation. Although conventional pharmaceutical therapies aimed to prevent further cartilage loss and joint dysfunction, there are no ideal strategies that target the pathogenesis of OA. Melatonin exhibits a variety of regulatory properties by binding to specific receptors and downstream molecules and exerts a myriad of receptor-independent actions via intracellular targets as a chondrocyte protector, an anti-inflammation modulator, and a free radical scavenger. Melatonin also modulates cartilage regeneration and degradation by directly/indirectly regulating the expression of main circadian clock genes, such as transcriptional activators [brain and muscle aryl hydrocarbon receptor nuclear translocator-like protein (Bmal) and circadian locomotor output cycles kaput (Clock)], transcriptional repressors [period circadian regulator (Per)1/2, cryptochrome (Cry)1/2, and Dec2], and nuclear hormone receptors [Rev-Erbs and retinoid acid-related orphan receptors (Rors)]. Owing to its effects on cartilage homeostasis, we propose a potential role for melatonin in the prevention and therapy of OA via the modulation of circadian clock genes, mitigation of chondrocyte apoptosis, anti-inflammatory activity, and scavenging of free radicals.
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Affiliation(s)
- Ko-Hsiu Lu
- Department of Orthopedics, Chung Shan Medical University Hospital, Taichung, Taiwan
- School of Medicine, Chung Shan Medical University, Taichung, Taiwan
| | | | | | - Chih-Hsin Tang
- School of Medicine, China Medical University, Taichung, Taiwan
- Department of Medical Laboratory Science and Biotechnology, College of Medical and Health Science, Asia University, Taichung, Taiwan
| | - Shih-Chi Su
- Whole-Genome Research Core Laboratory of Human Diseases, Chang Gung Memorial Hospital, Keelung, Taiwan
- Department of Dermatology, Drug Hypersensitivity Clinical and Research Center, Chang Gung Memorial Hospital, Taipei, Linkou and Keelung, Taiwan
| | - Chiao-Wen Lin
- Institute of Oral Sciences, Chung Shan Medical University, Taichung, Taiwan
- Department of Dentistry, Chung Shan Medical University Hospital 402, Taichung, Taiwan
| | - Shun-Fa Yang
- Institute of Medicine, Chung Shan Medical University, Taichung, Taiwan
- Department of Medical Research, Chung Shan Medical University Hospital, Taichung, Taiwan
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Han SJ, Jun J, Eyun SI, Lee CG, Jeon J, Pan CH. Schisandrol A Suppresses Catabolic Factor Expression by Blocking NF-κB Signaling in Osteoarthritis. Pharmaceuticals (Basel) 2021; 14:ph14030241. [PMID: 33800441 PMCID: PMC7999623 DOI: 10.3390/ph14030241] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 03/05/2021] [Accepted: 03/05/2021] [Indexed: 11/23/2022] Open
Abstract
Schisandrol A possesses pharmacological properties and is used to treat various diseases; however, its effects on osteoarthritis (OA) progression remain unclear. Here, we investigated Schisandrol A as a potential therapeutic agent for OA. In vitro, Schisandrol A effects were confirmed based on the levels of expression of catabolic factors (MMPs, ADAMTS5, and Cox2) induced by IL-1β or Schisandrol A treatment in chondrocytes. In vivo, experimental OA in mice was induced using a destabilized medial meniscus (DMM) surgical model or oral gavage of Schisandrol A in a dose-dependent manner, and demonstrated using histological analysis. In vitro and in vivo analyses demonstrated that Schisandrol A inhibition attenuated osteoarthritic cartilage destruction via the regulation of Mmp3, Mmp13, Adamts5, and Cox2 expression. In the NF-κB signaling pathway, Schisandrol A suppressed the degradation of IκB and the phosphorylation of p65 induced by IL-1β. Overall, and Schisandrol A reduced the expression of catabolic factors by blocking NF-κB signaling and prevented cartilage destruction. Therefore, Schisandrol A attenuated OA progression, and can be used to develop novel OA drug therapies.
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Affiliation(s)
- Seong Jae Han
- Department of Biomedical Sciences, Graduate School of Medicine, Ajou University, Suwon 16499, Korea;
- Department of Pharmacology, School of Medicine, Ajou University, Suwon 16499, Korea
- Degenerative InterDiseases Research Center, School of Medicine, Ajou University, Suwon 16499, Korea
| | - Jimoon Jun
- Department of Life Science, Chung-Ang University, Seoul 06974, Korea;
| | - Seong-il Eyun
- Department of Life Science, Chung-Ang University, Seoul 06974, Korea;
- Correspondence: (S.-i.E.); (C.-G.L.); (J.J.); (C.-H.P.); Tel.: +82-28-205-163 (S.-i.E.); +82-33-650-3512 (C.-G.L.); +82-219-5065 (J.J.); +82-33-350-3652 (C.-H.P.)
| | - Choong-Gu Lee
- Natural Product Informatics Research Center, Korea Institute of Science and Technology, Gangneung 25451, Korea
- Correspondence: (S.-i.E.); (C.-G.L.); (J.J.); (C.-H.P.); Tel.: +82-28-205-163 (S.-i.E.); +82-33-650-3512 (C.-G.L.); +82-219-5065 (J.J.); +82-33-350-3652 (C.-H.P.)
| | - Jimin Jeon
- Department of Biomedical Sciences, Graduate School of Medicine, Ajou University, Suwon 16499, Korea;
- Department of Pharmacology, School of Medicine, Ajou University, Suwon 16499, Korea
- Degenerative InterDiseases Research Center, School of Medicine, Ajou University, Suwon 16499, Korea
- Correspondence: (S.-i.E.); (C.-G.L.); (J.J.); (C.-H.P.); Tel.: +82-28-205-163 (S.-i.E.); +82-33-650-3512 (C.-G.L.); +82-219-5065 (J.J.); +82-33-350-3652 (C.-H.P.)
| | - Cheol-Ho Pan
- Natural Product Informatics Research Center, Korea Institute of Science and Technology, Gangneung 25451, Korea
- Division of Bio-Medical Science & Technology, KIST School, Korea University of Science and Technology (UST), Gangneung 02792, Korea
- Correspondence: (S.-i.E.); (C.-G.L.); (J.J.); (C.-H.P.); Tel.: +82-28-205-163 (S.-i.E.); +82-33-650-3512 (C.-G.L.); +82-219-5065 (J.J.); +82-33-350-3652 (C.-H.P.)
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Gu R, Shi Y, Huang W, Lao C, Zou Z, Pan S, Huang Z. Theobromine mitigates IL-1β-induced oxidative stress, inflammatory response, and degradation of type II collagen in human chondrocytes. Int Immunopharmacol 2020; 82:106226. [PMID: 32146317 DOI: 10.1016/j.intimp.2020.106226] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2019] [Revised: 01/16/2020] [Accepted: 01/16/2020] [Indexed: 02/08/2023]
Abstract
Osteoarthritis is one of the major causes of disability in elderly adults. Chondrocytes are responsible for the formation and remodeling of articular cartilage in joint tissue. The dysfunction of chondrocytes is a significant factor in the development of osteoarthritis. In the current study, we found that theobromine, a constituent of the cacao plant, possesses a preventive effect against interleukin (IL)-1β-induced chondrocyte dysfunction. Theobromine ameliorates IL-1β-induced production of cellular reactive oxygen species (ROS) and inflammatory mediators including cyclooxygenase-2 (COX-2) and prostaglandin E2 (PGE2). The presence of theobromine suppresses IL-1β-induced inducible nitro oxide synthase (iNOS) expression and cellular nitro oxide (NO) production. Theobromine also suppresses IL-1β-induced production of the pro-inflammatory cytokines tumor necrosis factor-α (TNF-α) and monocyte chemoattractant protein-1 (MCP-1), as well as matrix metalloproteinases (MMP)-3 and MMP-13. Additionally, theobromine mitigates IL-1β-induced type II collagen degradation. Mechanistically, we show that theobromine inhibits IL-1β-induced IκBα activation, nuclear factor-κB (NF-κB) protein p65 accumulation, and transfected NF-κB promoter activity, indicating that theobromine suppresses the NF-κB pathway in chondrocytes. Collectively, our study demonstrates that the natural molecule theobromine has a protective effect to counter cytokine-induced chondrocyte dysfunction, implying its beneficial effect in the prevention of osteoarthritis.
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Affiliation(s)
- Ronghe Gu
- Department of Orthopedics, The First People's Hospital of Nanning, The Fifth Affiliated Hospital of Guangxi Medical University, China
| | - Yu Shi
- Department of Spinal Surgery, Affiliated Hospital of Youjiang Medical College for Nationalities, China
| | - Weiguo Huang
- Department of Orthopedics, The First People's Hospital of Nanning, The Fifth Affiliated Hospital of Guangxi Medical University, China
| | - Chendeng Lao
- Department of Orthopedics, The First People's Hospital of Nanning, The Fifth Affiliated Hospital of Guangxi Medical University, China
| | - Zhuan Zou
- Department of Orthopedics, The First People's Hospital of Nanning, The Fifth Affiliated Hospital of Guangxi Medical University, China
| | - Songmu Pan
- Department of Orthopedics, The First People's Hospital of Nanning, The Fifth Affiliated Hospital of Guangxi Medical University, China
| | - Zonggui Huang
- Department of Orthopedics, The First People's Hospital of Nanning, The Fifth Affiliated Hospital of Guangxi Medical University, China.
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Mirastschijski U, Lupše B, Maedler K, Sarma B, Radtke A, Belge G, Dorsch M, Wedekind D, McCawley LJ, Boehm G, Zier U, Yamamoto K, Kelm S, Ågren MS. Matrix Metalloproteinase-3 is Key Effector of TNF-α-Induced Collagen Degradation in Skin. Int J Mol Sci 2019; 20:ijms20205234. [PMID: 31652545 PMCID: PMC6829232 DOI: 10.3390/ijms20205234] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2019] [Accepted: 10/17/2019] [Indexed: 12/15/2022] Open
Abstract
Inflammatory processes in the skin augment collagen degradation due to the up-regulation of matrix metalloproteinases (MMPs). The aim of the present project was to study the specific impact of MMP-3 on collagen loss in skin and its interplay with the collagenase MMP-13 under inflammatory conditions mimicked by the addition of the pro-inflammatory cytokine tumor necrosis factor-α (TNF-α). Skin explants from MMP-3 knock-out (KO) mice or from transgenic (TG) mice overexpressing MMP-3 in the skin and their respective wild-type counterparts (WT and WTT) were incubated ex vivo for eight days. The rate of collagen degradation, measured by released hydroxyproline, was reduced (p < 0.001) in KO skin explants compared to WT control skin but did not differ (p = 0.47) between TG and WTT skin. Treatment with the MMP inhibitor GM6001 reduced hydroxyproline media levels from WT, WTT and TG but not from KO skin explants. TNF-α increased collagen degradation in the WT group (p = 0.0001) only. More of the active form of MMP-13 was observed in the three MMP-3 expressing groups (co-incubation with receptor-associated protein stabilized MMP-13 subforms and enhanced detection in the media). In summary, the innate level of MMP-3 seems responsible for the accelerated loss of cutaneous collagen under inflammatory conditions, possibly via MMP-13 in mice.
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Affiliation(s)
- Ursula Mirastschijski
- Center for Biomolecular Interactions Bremen, Department of Biology and Biochemistry, University of Bremen, 28359 Bremen, Germany.
| | - Blaž Lupše
- Center for Biomolecular Interactions Bremen, Department of Biology and Biochemistry, University of Bremen, 28359 Bremen, Germany.
| | - Kathrin Maedler
- Center for Biomolecular Interactions Bremen, Department of Biology and Biochemistry, University of Bremen, 28359 Bremen, Germany.
| | - Bhavishya Sarma
- Center for Biomolecular Interactions Bremen, Department of Biology and Biochemistry, University of Bremen, 28359 Bremen, Germany.
| | - Arlo Radtke
- Faculty of Biology and Biochemistry, University of Bremen, 28359 Bremen, Germany.
| | - Gazanfer Belge
- Faculty of Biology and Biochemistry, University of Bremen, 28359 Bremen, Germany.
| | - Martina Dorsch
- Institute for Laboratory Animal Science, Hannover Medical School, 30625 Hannover, Germany.
| | - Dirk Wedekind
- Institute for Laboratory Animal Science, Hannover Medical School, 30625 Hannover, Germany.
| | - Lisa J McCawley
- Department of Biomedical Engineering, Vanderbilt University, Nashville, TN 37232-6840, USA.
| | - Gabriele Boehm
- Department of General, Visceral and Oncologic Surgery, Klinikum Bremen-Mitte, 28177 Bremen, Germany.
| | - Ulrich Zier
- Center for Biomolecular Interactions Bremen, Department of Biology and Biochemistry, University of Bremen, 28359 Bremen, Germany.
| | - Kazuhiro Yamamoto
- Institute of Ageing and Chronic Disease, University of Liverpool, Liverpool L69 3BX, United Kingdom.
| | - Sørge Kelm
- Center for Biomolecular Interactions Bremen, Department of Biology and Biochemistry, University of Bremen, 28359 Bremen, Germany.
| | - Magnus S Ågren
- Digestive Disease Center and Copenhagen Wound Healing Center, Bispebjerg Hospital, University of Copenhagen, 2400 Copenhagen, Denmark.
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Cho C, Kang LJ, Jang D, Jeon J, Lee H, Choi S, Han SJ, Oh E, Nam J, Kim CS, Park E, Jeong SY, Park CH, Shin YS, Eyun SI, Yang S. Cirsium japonicum var. maackii and apigenin block Hif-2α-induced osteoarthritic cartilage destruction. J Cell Mol Med 2019; 23:5369-5379. [PMID: 31148341 PMCID: PMC6652892 DOI: 10.1111/jcmm.14418] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2019] [Revised: 04/19/2019] [Accepted: 05/06/2019] [Indexed: 12/11/2022] Open
Abstract
Although Hif-2α is a master regulator of catabolic factor expression in osteoarthritis development, Hif-2α inhibitors remain undeveloped. The aim of this study was to determine whether Cirsium japonicum var. maackii (CJM) extract and one of its constituents, apigenin, could attenuate the Hif-2α-induced cartilage destruction implicated in osteoarthritis progression. In vitro and in vivo studies demonstrated that CJM reduced the IL-1β-, IL-6, IL-17- and TNF-α-induced up-regulation of MMP3, MMP13, ADAMTS4, ADAMTS5 and COX-2 and blocked osteoarthritis development in a destabilization of the medial meniscus mouse model. Activation of Hif-2α, which directly up-regulates MMP3, MMP13, ADAMTS4, IL-6 and COX-2 expression, is inhibited by CJM extract. Although cirsimarin, cirsimaritin and apigenin are components of CJM and can reduce inflammation, only apigenin effectively reduced Hif-2α expression and inhibited Hif-2α-induced MMP3, MMP13, ADAMTS4, IL-6 and COX-2 expression in articular chondrocytes. IL-1β induction of JNK phosphorylation and IκB degradation, representing a critical pathway for Hif-2α expression, was completely blocked by apigenin in a concentration-dependent manner. Collectively, these effects indicate that CJM and one of its most potent constituents, apigenin, can lead to the development of therapeutic agents for blocking osteoarthritis development as novel Hif-2α inhibitors.
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Affiliation(s)
- Chanmi Cho
- Department of Biomedical Sciences, Ajou University Graduate School of Medicine, Suwon, Korea.,Department of Pharmacology, Ajou University School of Medicine, Suwon, Korea.,CIRNO, Sungkyunkwan University, Suwon, Korea
| | - Li-Jung Kang
- Department of Biomedical Sciences, Ajou University Graduate School of Medicine, Suwon, Korea.,Department of Pharmacology, Ajou University School of Medicine, Suwon, Korea.,CIRNO, Sungkyunkwan University, Suwon, Korea
| | - Dain Jang
- Department of Biomedical Sciences, Ajou University Graduate School of Medicine, Suwon, Korea.,Department of Pharmacology, Ajou University School of Medicine, Suwon, Korea.,CIRNO, Sungkyunkwan University, Suwon, Korea
| | - Jimin Jeon
- Department of Biomedical Sciences, Ajou University Graduate School of Medicine, Suwon, Korea.,Department of Pharmacology, Ajou University School of Medicine, Suwon, Korea.,CIRNO, Sungkyunkwan University, Suwon, Korea
| | - Hyemi Lee
- Department of Biomedical Sciences, Ajou University Graduate School of Medicine, Suwon, Korea.,Department of Pharmacology, Ajou University School of Medicine, Suwon, Korea.,CIRNO, Sungkyunkwan University, Suwon, Korea
| | - Sangil Choi
- Department of Biomedical Sciences, Ajou University Graduate School of Medicine, Suwon, Korea.,Department of Pharmacology, Ajou University School of Medicine, Suwon, Korea.,CIRNO, Sungkyunkwan University, Suwon, Korea
| | - Seong Jae Han
- Department of Biomedical Sciences, Ajou University Graduate School of Medicine, Suwon, Korea.,Department of Pharmacology, Ajou University School of Medicine, Suwon, Korea.,CIRNO, Sungkyunkwan University, Suwon, Korea
| | - Eunjeong Oh
- Department of Biomedical Sciences, Ajou University Graduate School of Medicine, Suwon, Korea.,Department of Pharmacology, Ajou University School of Medicine, Suwon, Korea.,CIRNO, Sungkyunkwan University, Suwon, Korea
| | - Jiho Nam
- Department of Biomedical Sciences, Ajou University Graduate School of Medicine, Suwon, Korea.,Department of Pharmacology, Ajou University School of Medicine, Suwon, Korea.,CIRNO, Sungkyunkwan University, Suwon, Korea
| | - Chun Sung Kim
- Department of Oral Biochemistry, College of Dentistry, Chosun University, Gwangju, Korea
| | - Eunkuk Park
- Department of Biomedical Sciences, Ajou University Graduate School of Medicine, Suwon, Korea.,Department of Medical Genetics, Ajou University School of Medicine, Suwon, Korea
| | - Seon-Yong Jeong
- Department of Biomedical Sciences, Ajou University Graduate School of Medicine, Suwon, Korea.,Department of Medical Genetics, Ajou University School of Medicine, Suwon, Korea
| | - Chan Hum Park
- Department of Medicinal Crop Research, National Institute of Horticultural and Herbal Science, Rural Development Administration, Eumseong, Korea
| | - Yu Su Shin
- Department of Medicinal Crop Research, National Institute of Horticultural and Herbal Science, Rural Development Administration, Eumseong, Korea
| | - Seong-Il Eyun
- Department of Life Science, Chung-Ang University, Seoul, Korea
| | - Siyoung Yang
- Department of Biomedical Sciences, Ajou University Graduate School of Medicine, Suwon, Korea.,Department of Pharmacology, Ajou University School of Medicine, Suwon, Korea.,CIRNO, Sungkyunkwan University, Suwon, Korea
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11
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Jeong SY, Kang ML, Park JW, Im GI. Dual functional nanoparticles containing SOX duo and ANGPT4 shRNA for osteoarthritis treatment. J Biomed Mater Res B Appl Biomater 2019; 108:234-242. [PMID: 30957437 DOI: 10.1002/jbm.b.34383] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2018] [Revised: 03/09/2019] [Accepted: 03/24/2019] [Indexed: 12/15/2022]
Abstract
In our previous studies, we found that adult stem cells transfected with sex-determining region Y-box (SOX)-9, -6 and -5 genes (SOX trio) enhanced chondrogenesis and suppressed the progression of osteoarthritis (OA). The inhibition of angiopoietin-like 4 (ANGPT4) is known to reduce levels of cartilage damaging enzymes, such as, matrix metalloproteinases (MMPs). In this study, we designed nanoparticles comprising dexamethasone-conjugated polyethylenimine (DEX PEI) complexed with minicircle plasmid (MC) harboring SOX duo (SOX-9, -6) and ANGPTL4 small hairpin RNA (shANG) [MC SOX9/6/shANG] in the expectation that transfection of these nanoparticles would enhance chondrogenesis of stem cells and suppress inflammation in OA. Adipose-derived stem cells (ADSCs) transfected with MC SOX9/6/shANG (MC SOX9/6/shANG-tADSCs) showed significantly higher expressions of COL2 gene and protein than MC SOX9/6-transfected ADSCs (MC SOX9/6-tADSCs) during in vitro chondrogenesis while both enhanced chondrogenesis in the absence of growth factor addition as compared with negative controls. Furthermore, the expressions of MMP13 and MMP3 genes were significantly more diminished in MC SOX9/6/shANG-tADSCs than in MC SOX9/6-tADSCs. In vivo experiments using surgically-induced OA rats showed MC SOX9/6/shANG-tADSC-treated rats had significantly lower levels of cyclooxygenase (COX-2) and MMP13 in synovial fluids than MC SOX9/6-tADSC-treated rats, but no significant difference was observed between them in histological appearances. Both groups showed significantly less joint destruction than control groups did. These results demonstrate that dual functional nanoparticles containing SOX duo and ANGPT4 shRNA enhance chondrogenesis of ADSCs and suppress inflammation in OA. © 2019 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater 108B:234-242, 2020.
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Affiliation(s)
- Se-Young Jeong
- Integrative Research Institute for Regenerative Medical Engineering, Dongguk University, 814 Siksa-Dong, 411-773, Goyang, Republic of Korea
| | - Mi-Lan Kang
- Integrative Research Institute for Regenerative Medical Engineering, Dongguk University, 814 Siksa-Dong, 411-773, Goyang, Republic of Korea
| | - Jeong-Won Park
- Integrative Research Institute for Regenerative Medical Engineering, Dongguk University, 814 Siksa-Dong, 411-773, Goyang, Republic of Korea
| | - Gun-Il Im
- Integrative Research Institute for Regenerative Medical Engineering, Dongguk University, 814 Siksa-Dong, 411-773, Goyang, Republic of Korea
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Guo JY, Li F, Wen YB, Cui HX, Guo ML, Zhang L, Zhang YF, Guo YJ, Guo YX. Melatonin inhibits Sirt1-dependent NAMPT and NFAT5 signaling in chondrocytes to attenuate osteoarthritis. Oncotarget 2017; 8:55967-55983. [PMID: 28915567 PMCID: PMC5593538 DOI: 10.18632/oncotarget.18356] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2016] [Accepted: 05/12/2017] [Indexed: 12/24/2022] Open
Abstract
Osteoarthritis (OA) is a degenerative joint disease mainly characterized by cartilage degradation. Interleukin-1β (IL-1β) contributes to OA pathogenesis by enhancing oxidative stress and inflammation. Melatonin reportedly elicits potent protection against OA. However, the role of melatonin and underlying mechanism in IL-1β-stimulated chondrocytes remain largely unclear. In this study, we found that melatonin inhibited IL-1β-induced toxicity and sirtuin 1 (Sirt1) enhancement in human chondrocytes. Melatonin reduced the IL-1β-increased nicotinamide phosphoribosyltransferase (NAMPT) expression and the NAD+ level in chondrocytes in a Sirt1-dependent manner. In turn, the inhibitory effect of melatonin on Sirt1 was mediated by NAMPT. Moreover, melatonin suppressed IL-1β-induced Sirt1-mediated matrix metalloproteinase (MMP)-3 and MMP-13 production. Melatonin also decreased the Sirt1-steered nuclear factor of activated T cells 5 (NFAT5) expression in IL-1β-challenged chondrocytes. NFAT5 depletion mimicked the suppressive effects of melatonin on IL-1β-elevated production of inflammatory mediators, including tumor necrosis factor-α (TNF-α), IL-1β, prostaglandin E2 (PGE2), and nitric oxide (NO) in chondrocytes. TNF-α, IL-1β, PGE2, or NO decrease caused the similar reduction of MMP-3 and MMP-13 by melatonin in IL-1β-insulted chondrocytes. Highly consistent with in vitro findings, in vivo results demonstrated that melatonin repressed the expression of relevant genes in rat OA pathogenesis in anterior cruciate ligament transection model. Overall, these results indicate that melatonin effectively reduced IL-1β-induced MMP production by inhibiting Sirt1-dependent NAMPT and NFAT5 signaling in chondrocytes, suggesting melatonin as a potential therapeutic alternative for chondroprotection of OA patients.
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Affiliation(s)
- Jia Yi Guo
- Luoyang Orthopedic Hospital of Henan Province, Luoyang, Henan, China
| | - Feng Li
- Luoyang Orthopedic Hospital of Henan Province, Luoyang, Henan, China
| | - Yong Bing Wen
- Luoyang Orthopedic Hospital of Henan Province, Luoyang, Henan, China
| | - Hong Xun Cui
- Luoyang Orthopedic Hospital of Henan Province, Luoyang, Henan, China
| | - Ma Long Guo
- Luoyang Orthopedic Hospital of Henan Province, Luoyang, Henan, China
| | - Lin Zhang
- Department of Surgery, Advanced Clinical Skills Centre, University of Auckland, Auckland, New Zealand
| | - Yun Fei Zhang
- Luoyang Orthopedic Hospital of Henan Province, Luoyang, Henan, China
| | - Yan Jin Guo
- Luoyang Orthopedic Hospital of Henan Province, Luoyang, Henan, China
| | - Yan Xing Guo
- Luoyang Orthopedic Hospital of Henan Province, Luoyang, Henan, China
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Zhu LJ, Yang TC, Wu Q, Yuan LP, Chen ZW, Luo MH, Zeng HO, He DL, Mo CJ. Tumor necrosis factor receptor-associated factor (TRAF) 6 inhibition mitigates the pro-inflammatory roles and proliferation of rheumatoid arthritis fibroblast-like synoviocytes. Cytokine 2017; 93:26-33. [PMID: 28506571 DOI: 10.1016/j.cyto.2017.05.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2017] [Revised: 05/02/2017] [Accepted: 05/02/2017] [Indexed: 01/22/2023]
Abstract
BACKGROUND Rheumatoid arthritis (RA) fibroblast-like synoviocytes (FLSs) play a crucial role in RA through producing inflammatory cytokines and proteases which could cause cartilage destruction. We showed previously that elevated expression of tumor necrosis factor receptor-associated factor 6 (TRAF6) in RA synovium correlated significantly with the severity of synovitis and the number of infiltrated inflammatory cells. The aims of this study are to detect the roles of TRAF6 in RA-FLSs. METHODS Synovium were collected by closed needle biopsy from inflamed knees of active RA patients, and FLSs were isolated by modified tissue culture method. Expression of TRAF6 and CD55 in RA synivium was tested by double immunofluorescence (IF) staining. TRAF6 in RA-FLSs was inhibited using Lentiviral-TRAF6-shRNA transfection. Real-time PCR and ELISA were used to detect the mRNA expression and secretion of matrix metalloproteinase (MMP) and pro-inflammatory cytokines. Cell Counting Kit-8 was used to detect cell proliferation, flow cytometry was used to detect cell cycle, and Annexin V assay was used to detect cell apoptosis. RESULTS We showed that in the intimal and subintimal area of RA synovium, TRAF6 was expressed obviously not only in CD55+ cells, but also in some other CD55- cells. TRAF6 expression in RA-FLSs was suppressed effectively by Lentiviral-TRAF6-shRNA transfection. Inhibition of TRAF6 in RA-FLSs mitigated the mRNA levels and secretion of pro-inflammatory cytokines and MMPs, such as IL-1β, IL-8, IL-6, TNF-α, MMP-13, and MMP-3. In addition, it decreased the proliferation of RA-FLSs, blocked RA-FLSs in G0/G1-phase, and inhibited the cells to go into S-phase and G2/M-phase, but not facilitated apoptosis of RA-FLSs. CONCLUSION TRAF6 plays direct roles in the pro-inflammatory effects and proliferation of RA-FLSs. TRAF6 may serve as a potential treatment target in RA.
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Affiliation(s)
- Lang-Jing Zhu
- Department of Nephrology, The Eighth Affiliated Hospital, Sun Yat-Sen University, Shenzhen 518033, PR China; Department of Rheumatology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou 510120, PR China.
| | - Tie-Cheng Yang
- Department of Nephrology, The Eighth Affiliated Hospital, Sun Yat-Sen University, Shenzhen 518033, PR China
| | - Qiang Wu
- Department of Nephrology, The Eighth Affiliated Hospital, Sun Yat-Sen University, Shenzhen 518033, PR China
| | - Li-Ping Yuan
- Department of Nephrology, The Eighth Affiliated Hospital, Sun Yat-Sen University, Shenzhen 518033, PR China
| | - Zhen-Wei Chen
- Department of Nephrology, The Eighth Affiliated Hospital, Sun Yat-Sen University, Shenzhen 518033, PR China
| | - Min-Hong Luo
- Department of Nephrology, The Eighth Affiliated Hospital, Sun Yat-Sen University, Shenzhen 518033, PR China
| | - Hai-Ou Zeng
- Department of Nephrology, The Eighth Affiliated Hospital, Sun Yat-Sen University, Shenzhen 518033, PR China
| | - Dong-Ling He
- Department of Nephrology, The Eighth Affiliated Hospital, Sun Yat-Sen University, Shenzhen 518033, PR China
| | - Cai-Ju Mo
- Department of Nephrology, The Eighth Affiliated Hospital, Sun Yat-Sen University, Shenzhen 518033, PR China
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Vnukov VV, Krolevets IV, Panina SB, Milutina NP, Ananyan AA, Sagakyants AB, Zabrodin MA. Gene polymorphism and levels of pro-inflammatory cytokines in plasma and synovial fluid of patients with posttraumatic knee osteoarthritis. ADVANCES IN GERONTOLOGY 2016. [DOI: 10.1134/s2079057016030152] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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15
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Park JU, Kim SJ, Na CS, Choi CH, Seo CS, Son JK, Kang BY, Kim YR. Chondroprotective and anti-inflammatory effects of ChondroT, a new complex herbal medication. Altern Ther Health Med 2016; 16:213. [PMID: 27411719 PMCID: PMC4944440 DOI: 10.1186/s12906-016-1211-0] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2016] [Accepted: 06/24/2016] [Indexed: 11/10/2022]
Abstract
BACKGROUND Ganghwaljetongyeum (GHJTY) is a complex herbal decoction comprising 18 plants; it is used to treat arthritis. In order to develop a new anti-arthritic herbal medication, we selected 5 out of 18 GHJTY plants by using bioinformatics analysis. The new medication, called ChondroT, comprised water extracts of Osterici Radix, Lonicerae Folium, Angelicae Gigantis Radix, Clematidis Radix, and Phellodendri Cortex. This study was designed to investigate its chondroprotective and anti-inflammatory effects to develop an anti-arthritic herb medicine. METHODS ChondroT was validated using a convenient and accurate high-performance liquid chromatography-photodiode array (HPLC-PDA) detection method for simultaneous determination of its seven reference components. The concentrations of the seven marker constituents were in the range of 0.81-5.46 mg/g. The chondroprotective effects were evaluated based on SW1353 chondrocytes and matrix metalloproteinase 1 (MMP1) expression. In addition, the anti-inflammatory effects of ChondroT were studied by Western blotting of pro-inflammatory enzymes and by enzyme-linked immunosorbent assay (ELISA) of inflammatory mediators in lipopolysaccharides (LPS)-induced RAW264.7 cells. RESULTS ChondroT enhanced the growth of SW1353 chondrocytes and also significantly inhibited IL-1β-induced MMP-1 expression. However, ChondroT did not show any effects on the growth of HeLa and RAW264.7 cells. The expression of cyclooxygenase-2 (COX-2) and inducible nitric oxide synthase (iNOS) was induced by LPS in RAW264.7 cells, which was significantly decreased by pre-treatment with ChondroT. In addition, ChondroT reduced the activation of NF-kB and production of inflammatory mediators, such as IL-1β, IL-6, PGE2, and nitric oxide (NO) in LPS-induced RAW264.7 cells. CONCLUSIONS These results show that ChondroT exerted a chondroprotective effect and demonstrated multi-target mechanisms related to inflammation and arthritis. In addition, the suppressive effect was greater than that exhibited by GHJTY, suggesting that ChondroT, a new complex herbal medication, has therapeutic potential for the treatment of arthritis.
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Attur M, Krasnokutsky S, Statnikov A, Samuels J, Li Z, Friese O, Hellio Le Graverand-Gastineau MP, Rybak L, Kraus VB, Jordan JM, Aliferis CF, Abramson SB. Low-grade inflammation in symptomatic knee osteoarthritis: prognostic value of inflammatory plasma lipids and peripheral blood leukocyte biomarkers. Arthritis Rheumatol 2016. [PMID: 26195278 DOI: 10.1002/art.39279] [Citation(s) in RCA: 84] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
OBJECTIVE Inflammatory mediators, such as prostaglandin E2 (PGE2 ) and interleukin-1β (IL-1β), are produced by osteoarthritic (OA) joint tissue, where they may contribute to disease pathogenesis. We undertook the present study to examine whether inflammation, evidenced in plasma and peripheral blood leukocytes (PBLs), reflects the presence, progression, or specific symptoms of symptomatic knee OA. METHODS Patients with symptomatic knee OA were enrolled in a 24-month prospective study of radiographic progression. Standardized knee radiographs were obtained at baseline and 24 months. At baseline, levels of the plasma lipids PGE2 and 15-hydroxyeicosatetraenoic acid (15-HETE) were measured, and transcriptome analysis of PBLs was performed by microarray and quantitative polymerase chain reaction. RESULTS Baseline PGE2 synthase (PGES) levels determined by PBL microarray gene expression and plasma PGE2 levels distinguished patients with symptomatic knee OA from non-OA controls (area under the receiver operating characteristic curve [AUC] 0.87 and 0.89, respectively, P < 0.0001). Baseline plasma 15-HETE levels were significantly elevated in patients with symptomatic knee OA versus non-OA controls (P < 0.0195). In the 146 patients who completed the 24-month study, elevated baseline expression of IL-1β, tumor necrosis factor α, and cyclooxygenase 2 (COX-2) messenger RNA in PBLs predicted higher risk of radiographic progression as evidenced by joint space narrowing (JSN). In a multivariate model, AUC point estimates of models containing COX-2 in combination with demographic traits overlapped the confidence interval of the base model in 2 of the 3 JSN outcome measures (JSN >0.0 mm, JSN >0.2 mm, and JSN >0.5 mm; AUC 0.62-0.67). CONCLUSION The inflammatory plasma lipid biomarkers PGE2 and 15-HETE identify patients with symptomatic knee OA, and the PBL inflammatory transcriptome identifies a subset of patients with symptomatic knee OA who are at increased risk of radiographic progression. These findings may reflect low-grade inflammation in OA and may be useful as diagnostic and prognostic biomarkers in clinical development of disease-modifying OA drugs.
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Affiliation(s)
- Mukundan Attur
- New York University School of Medicine and New York University Langone Medical Center, New York, New York
| | - Svetlana Krasnokutsky
- New York University School of Medicine and New York University Langone Medical Center, New York, New York
| | - Alexander Statnikov
- New York University School of Medicine and New York University Langone Medical Center, New York, New York
| | - Jonathan Samuels
- New York University School of Medicine and New York University Langone Medical Center, New York, New York
| | - Zhiguo Li
- New York University School of Medicine and New York University Langone Medical Center, New York, New York
| | - Olga Friese
- Pfizer Worldwide Research and Development, St. Louis, Missouri
| | | | - Leon Rybak
- New York University School of Medicine and New York University Langone Medical Center, New York, New York
| | | | | | - Constantin F Aliferis
- New York University School of Medicine and New York University Langone Medical Center, New York, New York
| | - Steven B Abramson
- New York University School of Medicine and New York University Langone Medical Center, New York, New York
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Kaneva MK, Kerrigan MJ, Grieco P, Curley GP, Locke IC, Getting SJ. Melanocortin peptides protect chondrocytes from mechanically induced cartilage injury. Biochem Pharmacol 2014; 92:336-47. [DOI: 10.1016/j.bcp.2014.08.019] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2014] [Revised: 08/19/2014] [Accepted: 08/20/2014] [Indexed: 10/24/2022]
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El Mansouri FE, Nebbaki SS, Kapoor M, Afif H, Martel-Pelletier J, Pelletier JP, Benderdour M, Fahmi H. Lysine-specific demethylase 1-mediated demethylation of histone H3 lysine 9 contributes to interleukin 1β-induced microsomal prostaglandin E synthase 1 expression in human osteoarthritic chondrocytes. Arthritis Res Ther 2014; 16:R113. [PMID: 24886859 PMCID: PMC4060543 DOI: 10.1186/ar4564] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2013] [Accepted: 04/30/2014] [Indexed: 02/07/2023] Open
Abstract
Introduction Microsomal prostaglandin E synthase 1 (mPGES-1) catalyzes the terminal step in the biosynthesis of PGE2, a critical mediator in the pathophysiology of osteoarthritis (OA). Histone methylation plays an important role in epigenetic gene regulation. In this study, we investigated the roles of histone H3 lysine 9 (H3K9) methylation in interleukin 1β (IL-1β)-induced mPGES-1 expression in human chondrocytes. Methods Chondrocytes were stimulated with IL-1β, and the expression of mPGES-1 mRNA was evaluated using real-time RT-PCR. H3K9 methylation and the recruitment of the histone demethylase lysine-specific demethylase 1 (LSD1) to the mPGES-1 promoter were evaluated using chromatin immunoprecipitation assays. The role of LSD1 was further evaluated using the pharmacological inhibitors tranylcypromine and pargyline and small interfering RNA (siRNA)-mediated gene silencing. The LSD1 level in cartilage was determined by RT-PCR and immunohistochemistry. Results The induction of mPGES-1 expression by IL-1β correlated with decreased levels of mono- and dimethylated H3K9 at the mPGES-1 promoter. These changes were concomitant with the recruitment of the histone demethylase LSD1. Treatment with tranylcypromine and pargyline, which are potent inhibitors of LSD1, prevented IL-1β-induced H3K9 demethylation at the mPGES-1 promoter and expression of mPGES-1. Consistently, LSD1 gene silencing with siRNA prevented IL-1β-induced H3K9 demethylation and mPGES-1 expression, suggesting that LSD1 mediates IL-1β-induced mPGES-1 expression via H3K9 demethylation. We show that the level of LSD1 was elevated in OA compared to normal cartilage. Conclusion These results indicate that H3K9 demethylation by LSD1 contributes to IL-1β-induced mPGES-1 expression and suggest that this pathway could be a potential target for pharmacological intervention in the treatment of OA and possibly other arthritic conditions.
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Sommerfelt RM, Feuerherm AJ, Jones K, Johansen B. Cytosolic phospholipase A2 regulates TNF-induced production of joint destructive effectors in synoviocytes. PLoS One 2013; 8:e83555. [PMID: 24349530 PMCID: PMC3861525 DOI: 10.1371/journal.pone.0083555] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2013] [Accepted: 11/06/2013] [Indexed: 11/18/2022] Open
Abstract
INTRODUCTION Rheumatoid arthritis (RA) is an inflammatory disease of the joint characterized by chronic synovitis causing pain, swelling and loss of function due to destruction of cartilage and bone. The complex series of pathological events occurring in RA is largely regulated via excessive production of pro-inflammatory cytokines, the most prominent being tumor necrosis factor (TNF). The objective of this work was to elucidate possible involvement of group IVA cytosolic phospholipase A2 (cPLA2α) in TNF-induced regulation of synovitis and joint destructive effectors in RA, to evaluate the potential of cPLA2α as a future therapeutic target. METHODS The involvement of cPLA2α in tumor necrosis factor (TNF)-induced intracellular signaling cascades in synoviocytes (synovial fibroblast-like cells) was analyzed by arachidonic acid (AA) release assay, synoviocyte enzyme activity assay, gene expression analysis by real-time PCR and ELISA immunoassay for the detection of prostaglandin E2 (PGE2), interleukin 8 (IL8) and stromelysin-1 (MMP3), respectively. RESULTS Inhibitors of cPLA2α enzyme activity (AVX002, ATK) significantly reduced TNF-induced cellular release of AA, PGE2, IL8 and MMP3. This reduction was evident both at transcriptional, protein or metabolite levels. Interestingly, cPLA2α inhibition affected several key points of the arachidonyl cascade; AA-release, cyclooxygenase-2 (COX2) expression and PGE2 production. Furthermore, the results suggest that cPLA2α is subject to transcriptional auto-regulation as inhibition of cPLA2α resulted in reduced PLA2G4A gene expression in TNF-stimulated synoviocytes. CONCLUSIONS cPLA2α appears to be an important regulator of central effectors of inflammation and joint destruction, namely MMP3, IL8, COX2, and PGE2. Decreased transcription of the PLA2G4A and COX2 genes in response to cPLA2α enzyme inhibition further suggest a self-reinforcing effect of cPLA2α inhibition in response to TNF. Collectively, these results support that cPLA2α is an attractive therapeutic target candidate as its inhibition reduces the production of multiple key pro-inflammatory factors involved in RA pathogenesis.
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Affiliation(s)
- Randi M. Sommerfelt
- Department of Biology, Norwegian University of Science and Technology, Trondheim, Norway
| | - Astrid J. Feuerherm
- Department of Biology, Norwegian University of Science and Technology, Trondheim, Norway
| | - Kymry Jones
- Department of Biology, Norwegian University of Science and Technology, Trondheim, Norway
| | - Berit Johansen
- Department of Biology, Norwegian University of Science and Technology, Trondheim, Norway
- * E-mail:
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Abstract
Periodontitis is a chronic inflammatory condition of the periodontium involving interactions between bacterial products, numerous cell populations and inflammatory mediators. It is generally accepted that periodontitis is initiated by complex and diverse microbial biofilms which form on the teeth, i.e. dental plaque. Substances released from this biofilm such as lipopolysaccharides, antigens and other virulence factors, gain access to the gingival tissue and initiate an inflammatory and immune response, leading to the activation of host defence cells. As a result of cellular activation, inflammatory mediators, including cytokines, chemokines, arachidonic acid metabolites and proteolytic enzymes collectively contribute to tissue destruction and bone resorption. This review summarises recent studies on the pathogenesis of periodontitis, with the main focus on inflammatory mediators and their role in periodontal disease.
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Effect of body-weight loading onto the articular cartilage on the occurrence of quinolone-induced chondrotoxicity in juvenile rats. Toxicol Lett 2013. [DOI: 10.1016/j.toxlet.2012.11.017] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Mahjoub M, Berenbaum F, Houard X. Why subchondral bone in osteoarthritis? The importance of the cartilage bone interface in osteoarthritis. Osteoporos Int 2012. [PMID: 23179566 DOI: 10.1007/s00198-012-2161-0] [Citation(s) in RCA: 84] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Osteoarthritis is a whole joint disease characterised by the disappearance of the cartilage associated with subchondral bone sclerosis, formation of osteophytes and a mild inflammation of the synovial membrane. Although all these events have been independently studied, functional interactions between these different joint tissues should exist, especially between subchondral bone and cartilage. Moreover, recent studies show that cartilage and subchondral bone act as a single functional unit. This review highlights this novel concept.
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Affiliation(s)
- M Mahjoub
- UR4 Ageing, Stress and Inflammation, Université Pierre et Marie Curie, 7 quai Saint-Bernard, 75252, Paris Cedex 5, France
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Bougault C, Gosset M, Houard X, Salvat C, Godmann L, Pap T, Jacques C, Berenbaum F. Stress-induced cartilage degradation does not depend on the NLRP3 inflammasome in human osteoarthritis and mouse models. ACTA ACUST UNITED AC 2012; 64:3972-81. [DOI: 10.1002/art.34678] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2011] [Accepted: 08/14/2012] [Indexed: 01/15/2023]
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Role of heat-stable enterotoxins in the induction of early immune responses in piglets after infection with enterotoxigenic Escherichia coli. PLoS One 2012; 7:e41041. [PMID: 22815904 PMCID: PMC3398878 DOI: 10.1371/journal.pone.0041041] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2011] [Accepted: 06/21/2012] [Indexed: 01/01/2023] Open
Abstract
Enterotoxigenic Escherichia coli (ETEC) strains that produce heat-stable (ST) and/or heat - labile (LT) enterotoxins are cause of post – weaning diarrhea in piglets. However, the relative importance of the different enterotoxins in host immune responses against ETEC infection has been poorly defined. In the present study, several isogenic mutant strains of an O149:F4ac+, LT+ STa+ STb+ ETEC strain were constructed that lack the expression of LT in combination with one or both types of ST enterotoxins (STa and/or STb). The small intestinal segment perfusion (SISP) technique and microarray analysis were used to study host early immune responses induced by these mutant strains 4 h after infection in comparison to the wild type strain and a PBS control. Simultaneously, net fluid absorption of pig small intestinal mucosa was measured 4 h after infection, allowing us to correlate enterotoxin secretion with gene regulation. Microarray analysis showed on the one hand a non-toxin related general antibacterial response comprising genes such as PAP, MMP1 and IL8. On the other hand, results suggest a dominant role for STb in small intestinal secretion early after post-weaning infection, as well as in the induced innate immune response through differential regulation of immune mediators like interleukin 1 and interleukin 17.
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Wu SQ, Otero M, Unger FM, Goldring MB, Phrutivorapongkul A, Chiari C, Kolb A, Viernstein H, Toegel S. Anti-inflammatory activity of an ethanolic Caesalpinia sappan extract in human chondrocytes and macrophages. JOURNAL OF ETHNOPHARMACOLOGY 2011; 138:364-372. [PMID: 21963554 PMCID: PMC3282169 DOI: 10.1016/j.jep.2011.09.011] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2011] [Revised: 07/25/2011] [Accepted: 09/14/2011] [Indexed: 05/31/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Caesalpinia sappan is a common remedy in Traditional Chinese Medicine and possesses diverse biological activities including anti-inflammatory properties. Osteoarthritis (OA) is a degenerative joint disease with an inflammatory component that drives the degradation of cartilage extracellular matrix. In order to provide a scientific basis for the applicability of Caesalpinia sappan in arthritic diseases, the present study aimed to assess the effects of an ethanolic Caesalpinia sappan extract (CSE) on human chondrocytes and macrophages. MATERIALS AND METHODS Primary human chondrocytes were isolated from cartilage specimens of OA patients. Primary cells, SW1353 chondrocytes and THP-1 macrophages were serum-starved and pretreated with different concentrations of CSE prior to stimulation with 10 ng/ml of interleukin-1beta (IL-1β) or lipopolysaccharide (LPS). Following viability tests, nitric oxide (NO) and tumor necrosis factor-alpha (TNF-α) were evaluated by Griess assay and ELISA, respectively. Using validated real-time PCR assays, mRNA levels of IL-1β, TNF-α, inducible nitric oxide synthase (iNOS), and cyclooxygenase-2 (COX-2) were quantified. SW1353 cells were cotransfected with a COX-2 luciferase reporter plasmid and nuclear factor-kappa-B (NF-κB) p50 and p65 expression vectors in the presence or absence of CSE. RESULTS CSE dose-dependently inhibited the expression of pro-inflammatory cytokines IL-1β and TNF-α in IL-1β-stimulated chondrocytes and LPS-stimulated THP-1 macrophages. CSE further suppressed the synthesis of NO in primary OA chondrocytes by blocking iNOS mRNA expression. The inhibition of COX-2 transcription was found to be related with the CSE inhibition of the p65/p50-driven transactivation of the COX-2 promoter. CONCLUSIONS The present report is first to demonstrate the anti-inflammatory activity of CSE in an in vitro cell model of joint inflammation. CSE can effectively abrogate the IL-1β-induced over-expression of inflammatory mediators at the transcriptional level in human chondrocytes and macrophages, most likely by inhibiting NF-κB (p65/p50) signaling. Blockade of IL-1β-induced NF-κB signaling and its downstream pro-inflammatory targets by CSE may be beneficial for reducing cartilage breakdown in arthritis.
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Affiliation(s)
- Shengqian Q Wu
- Department of Pharmaceutical Technology and Biopharmaceutics, University of Vienna, 1090 Vienna, Austria
- Department of Pharmacology and Toxicology, University of Vienna, 1090 Vienna, Austria
| | - Miguel Otero
- Laboratory of Cartilage Biology, Research Division, Hospital for Special Surgery, Weill Cornell Medical College, New York, USA
| | - Frank M Unger
- Department of Pharmaceutical Technology and Biopharmaceutics, University of Vienna, 1090 Vienna, Austria
| | - Mary B Goldring
- Laboratory of Cartilage Biology, Research Division, Hospital for Special Surgery, Weill Cornell Medical College, New York, USA
| | - Ampai Phrutivorapongkul
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, Chiang Mai University, Chiang Mai, Thailand
| | - Catharina Chiari
- Department of Orthopedics, Medical University Vienna, 1090 Vienna, Austria
| | - Alexander Kolb
- Department of Orthopedics, Medical University Vienna, 1090 Vienna, Austria
| | - Helmut Viernstein
- Department of Pharmaceutical Technology and Biopharmaceutics, University of Vienna, 1090 Vienna, Austria
| | - Stefan Toegel
- Department of Pharmaceutical Technology and Biopharmaceutics, University of Vienna, 1090 Vienna, Austria
- Laboratory of Cartilage Biology, Research Division, Hospital for Special Surgery, Weill Cornell Medical College, New York, USA
- Department of Orthopedics, Medical University Vienna, 1090 Vienna, Austria
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Sautter NB, Delaney KL, Hausman FA, Trune DR. Tissue remodeling in the acute otitis media mouse model. Int J Pediatr Otorhinolaryngol 2011; 75:1368-71. [PMID: 21889218 PMCID: PMC3197788 DOI: 10.1016/j.ijporl.2011.07.026] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/12/2011] [Revised: 07/20/2011] [Accepted: 07/24/2011] [Indexed: 02/03/2023]
Abstract
OBJECTIVES Otitis media is an infectious, inflammatory process involving the middle ear space. Chronic inflammation is associated with fibrosis, scarring and osteogenesis within the middle ear, which may contribute to subsequent hearing loss and increase the difficulty of treatment. METHODS Heat-killed Streptococcus pneumoniae was injected into the middle ears of 8-12 week old Balb/c mice. Control mice were treated with PBS middle ear injections. Middle ears were harvested at 1, 3, 5 and 7 days following injection (n=8 for each time point). The middle ears were processed using standard RT-PCR techniques. Up- and down-regulation of mRNA expression of various members of the Bone Morphogenetic Protein (BMP), Fibroblast Growth Factor (FGF) and Matrix Metalloproteinase (MMP) families was quantified and compared to PBS treated controls (n=8 for each time point). RESULTS Significant upregulation of MMP2, MMP3 and MMP9 was observed at varying time points (p<0.05). Significant downregulation of BMP3, BMP4, BMP5 BMP6 and BMP8a was seen at varying time points (p<0.05). Significant downregulation of FGF3, FGF6, FGF10 and FGFr1 was observed at varying time points (p<0.05). No significant expression of BMP8b, BMP9, BMP10, FGF5, FGF8, MMP1a, MMP7 and MMP14 was detected within the middle ear. CONCLUSIONS Inflammation within the middle ear following injection of bacterial products results in changes in the regulation of several tissue remodeling cytokines and proteinases in the mouse model. Further understanding of these molecular processes may allow for the development of treatment modalities aimed at preventing middle ear tissue remodeling.
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Affiliation(s)
- Nathan B. Sautter
- Oregon Health Sciences University, Department of Otolaryngology – Head and Neck Surgery, Portland, OR
| | | | - Frances A. Hausman
- Oregon Hearing Research Center, Oregon Health Sciences University, Portland, OR
| | - Dennis R. Trune
- Oregon Hearing Research Center, Oregon Health Sciences University, Portland, OR
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Mitsui H, Aoyama T, Furu M, Ito K, Jin Y, Maruyama T, Kanaji T, Fujimura S, Sugihara H, Nishiura A, Otsuka T, Nakamura T, Toguchida J. Prostaglandin E2 receptor type 2-selective agonist prevents the degeneration of articular cartilage in rabbit knees with traumatic instability. Arthritis Res Ther 2011; 13:R146. [PMID: 21914215 PMCID: PMC3308074 DOI: 10.1186/ar3460] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2011] [Revised: 06/28/2011] [Accepted: 09/14/2011] [Indexed: 02/07/2023] Open
Abstract
Introduction Osteoarthritis (OA) is a common cause of disability in older adults. We have previously reported that an agonist for subtypes EP2 of the prostaglandin E2 receptor (an EP2 agonist) promotes the regeneration of chondral and osteochondral defects. The purpose of the current study is to analyze the effect of this agonist on articular cartilage in a model of traumatic degeneration. Methods The model of traumatic degeneration was established through transection of the anterior cruciate ligament and partial resection of the medial meniscus of the rabbits. Rabbits were divided into 5 groups; G-S (sham operation), G-C (no further treatment), G-0, G-80, and G-400 (single intra-articular administration of gelatin hydrogel containing 0, 80, and 400 μg of the specific EP2 agonist, ONO-8815Ly, respectively). Degeneration of the articular cartilage was evaluated at 2 or 12 weeks after the operation. Results ONO-8815Ly prevented cartilage degeneration at 2 weeks, which was associated with the inhibition of matrix metalloproteinase-13 (MMP-13) expression. The effect of ONO-8815Ly failed to last, and no effects were observed at 12 weeks after the operation. Conclusions Stimulation of prostaglandin E2 (PGE2) via EP2 prevents degeneration of the articular cartilage during the early stages. With a system to deliver it long term, the EP2 agonist could be a new therapeutic tool for OA.
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Affiliation(s)
- Hiroto Mitsui
- Department of Tissue Regeneration, Institute for Frontier Medical Sciences, Kyoto University, 53 Kawahara-cho, Shogoin, Sakyo-ku, Kyoto 606-8507, Japan
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Schmitz ML, Weber A, Roxlau T, Gaestel M, Kracht M. Signal integration, crosstalk mechanisms and networks in the function of inflammatory cytokines. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2011; 1813:2165-75. [PMID: 21787809 DOI: 10.1016/j.bbamcr.2011.06.019] [Citation(s) in RCA: 68] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Received: 03/22/2011] [Revised: 05/31/2011] [Accepted: 06/01/2011] [Indexed: 12/20/2022]
Abstract
Infection or cell damage triggers the release of pro-inflammatory cytokines such as interleukin(IL)-1α or β and tumor necrosis factor (TNF)α which are key mediators of the host immune response. Following their identification and the elucidation of central signaling pathways, recent results show a highly complex crosstalk between various cytokines and their signaling effectors. The molecular mechanisms controlling signaling thresholds, signal integration and the function of feed-forward and feedback loops are currently revealed by combining methods from biochemistry, genetics and in silico analysis. Increasing evidence is mounted that defects in information processing circuits or their components can be causative for chronic or overshooting inflammation. As progress in biosciences has always benefitted from the use of well-studied model systems, research on inflammatory cytokines may function as a paradigm to reveal general principles of signal integration, crosstalk mechanisms and signaling networks.
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Affiliation(s)
- M Lienhard Schmitz
- Institute of Biochemistry, Justus-Liebig-University Giessen, Giessen, Germany.
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Gelse K, Beyer C. The prostaglandin E(2) system: a toolbox for skeletal repair? ACTA ACUST UNITED AC 2011; 63:871-3. [PMID: 21190302 DOI: 10.1002/art.30153] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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