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Cheung C, Tu S, Feng Y, Wan C, Ai H, Chen Z. Mitochondrial quality control dysfunction in osteoarthritis: Mechanisms, therapeutic strategies & future prospects. Arch Gerontol Geriatr 2024; 125:105522. [PMID: 38861889 DOI: 10.1016/j.archger.2024.105522] [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: 04/19/2024] [Revised: 05/25/2024] [Accepted: 06/03/2024] [Indexed: 06/13/2024]
Abstract
Osteoarthritis (OA) is a prevalent chronic joint disease characterized by articular cartilage degeneration, pain, and disability. Emerging evidence indicates that mitochondrial quality control dysfunction contributes to OA pathogenesis. Mitochondria are essential organelles to generate cellular energy via oxidative phosphorylation and regulate vital processes. Impaired mitochondria can negatively impact cellular metabolism and result in the generation of harmful reactive oxygen species (ROS). Dysfunction in mitochondrial quality control mechanisms has been increasingly linked to OA onset and progression. This review summarizes current knowledge on the role of mitochondrial quality control disruption in OA, highlighting disturbed mitochondrial dynamics, impaired mitochondrial biogenesis, antioxidant defenses and mitophagy. The review also discusses potential therapeutic strategies targeting mitochondrial Quality Control in OA, offering future perspectives on advancing OA therapeutic strategies.
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Affiliation(s)
- Chiyuen Cheung
- Department of Stomatology, the Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, PR China
| | - Shaoqin Tu
- Department of Stomatology, the Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, PR China
| | - Yi Feng
- Department of Stomatology, the Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, PR China
| | - Chuiming Wan
- Department of Stomatology, the Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, PR China
| | - Hong Ai
- Department of Stomatology, the Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, PR China
| | - Zheng Chen
- Department of Stomatology, the Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, PR China.
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Fazio A, Di Martino A, Brunello M, Traina F, Marvi MV, Mazzotti A, Faldini C, Manzoli L, Evangelisti C, Ratti S. The involvement of signaling pathways in the pathogenesis of osteoarthritis: An update. J Orthop Translat 2024; 47:116-124. [PMID: 39021400 PMCID: PMC11254498 DOI: 10.1016/j.jot.2024.06.002] [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: 06/06/2023] [Revised: 04/09/2024] [Accepted: 06/02/2024] [Indexed: 07/20/2024] Open
Abstract
Osteoarthritis (OA) is one of the most common disabling pathologies, characterized by joint pain and reduced function, significantly worsening the quality of life. Even if important progresses have been made in OA research, little is yet known about the precise cellular and molecular mechanisms underlying OA. Understanding dysregulated signaling networks and their crosstalk in OA may offer a strong opportunity for the development of combined targeted therapies. Hence, this review highlights the recent findings on the main pathways involved in OA development, including Wnt, Notch, Hedgehog, MAPK, AMPK, and JAK/STAT, providing insights on current targeted therapies in OA patients' management. The translational potential of this article The identification of key signaling pathways involved in OA development and the investigation of their signaling crosstalk could pave the way for more effective treatments and improved management of OA patients in the future.
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Affiliation(s)
- Antonietta Fazio
- Department of Biomedical and Neuromotor Sciences, University of Bologna, 40126, Bologna, Italy
| | - Alberto Di Martino
- Department of Biomedical and Neuromotor Sciences, University of Bologna, 40126, Bologna, Italy
- Ist Orthopedic Department, IRCCS Istituto Ortopedico Rizzoli, 40136, Bologna, Italy
| | - Matteo Brunello
- Ist Orthopedic Department, IRCCS Istituto Ortopedico Rizzoli, 40136, Bologna, Italy
| | - Francesco Traina
- Department of Biomedical and Neuromotor Sciences, University of Bologna, 40126, Bologna, Italy
- Ortopedia-Traumatologia e Chirurgia Protesica e dei Reimpianti d'anca e di Ginocchio, IRCCS Istituto Ortopedico Rizzoli, 40136 Bologna, Italy
| | - Maria Vittoria Marvi
- Department of Biomedical and Neuromotor Sciences, University of Bologna, 40126, Bologna, Italy
| | - Antonio Mazzotti
- Department of Biomedical and Neuromotor Sciences, University of Bologna, 40126, Bologna, Italy
- Ist Orthopedic Department, IRCCS Istituto Ortopedico Rizzoli, 40136, Bologna, Italy
| | - Cesare Faldini
- Department of Biomedical and Neuromotor Sciences, University of Bologna, 40126, Bologna, Italy
- Ist Orthopedic Department, IRCCS Istituto Ortopedico Rizzoli, 40136, Bologna, Italy
| | - Lucia Manzoli
- Department of Biomedical and Neuromotor Sciences, University of Bologna, 40126, Bologna, Italy
| | - Camilla Evangelisti
- Department of Biomedical and Neuromotor Sciences, University of Bologna, 40126, Bologna, Italy
| | - Stefano Ratti
- Department of Biomedical and Neuromotor Sciences, University of Bologna, 40126, Bologna, Italy
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Cao H, Zhou X, Xu B, Hu H, Guo J, Wang M, Li N, Jun Z. Advances in the study of mitophagy in osteoarthritis. J Zhejiang Univ Sci B 2024; 25:197-211. [PMID: 38453635 PMCID: PMC10918408 DOI: 10.1631/jzus.b2300402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2023] [Accepted: 08/21/2023] [Indexed: 03/09/2024]
Abstract
Osteoarthritis (OA), characterized by cartilage degeneration, synovial inflammation, and subchondral bone remodeling, is among the most common musculoskeletal disorders globally in people over 60 years of age. The initiation and progression of OA involves the abnormal metabolism of chondrocytes as an important pathogenic process. Cartilage degeneration features mitochondrial dysfunction as one of the important causative factors of abnormal chondrocyte metabolism. Therefore, maintaining mitochondrial homeostasis is an important strategy to mitigate OA. Mitophagy is a vital process for autophagosomes to target, engulf, and remove damaged and dysfunctional mitochondria, thereby maintaining mitochondrial homeostasis. Cumulative studies have revealed a strong association between mitophagy and OA, suggesting that the regulation of mitophagy may be a novel therapeutic direction for OA. By reviewing the literature on mitophagy and OA published in recent years, this paper elaborates the potential mechanism of mitophagy regulating OA, thus providing a theoretical basis for studies related to mitophagy to develop new treatment options for OA.
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Affiliation(s)
- Hong Cao
- Department of Sport Rehabilitation, Shanghai University of Sport, Shanghai 200438, China
- National Key Laboratory of Immunity and Inflammation, Naval Medical University, Shanghai 200433, China
| | - Xuchang Zhou
- Department of Sport Rehabilitation, Shanghai University of Sport, Shanghai 200438, China
- School of Sport Medicine and Rehabilitation, Beijing Sport University, Beijing 100084, China
| | - Bowen Xu
- National Key Laboratory of Immunity and Inflammation, Naval Medical University, Shanghai 200433, China
| | - Han Hu
- National Key Laboratory of Immunity and Inflammation, Naval Medical University, Shanghai 200433, China
| | - Jianming Guo
- Department of Sport Rehabilitation, Shanghai University of Sport, Shanghai 200438, China
| | - Miao Wang
- Department of Sport Rehabilitation, Shanghai University of Sport, Shanghai 200438, China
| | - Nan Li
- National Key Laboratory of Immunity and Inflammation, Naval Medical University, Shanghai 200433, China.
| | - Zou Jun
- Department of Sport Rehabilitation, Shanghai University of Sport, Shanghai 200438, China.
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Dong F, Zhang P, Ma B, Bao G, Kang H. Effects of glucose concentration and oxygen partial pressure on the respiratory metabolism of sheep temporomandibular joint disc cells. Exp Ther Med 2023; 26:387. [PMID: 37456155 PMCID: PMC10347106 DOI: 10.3892/etm.2023.12086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Accepted: 06/02/2023] [Indexed: 07/18/2023] Open
Abstract
Temporomandibular joint (TMJ) disc degeneration is a common disease characterized by a decrease in metabolic function. The present study aimed to investigate the pathogenesis of TMJ disc degeneration by analyzing the effects of oxygen and glucose concentrations on metabolism in a simulated TMJ disc cell growth environment. Cell samples were divided into 10 groups and cultured in different nutritional environments, including 21 and 2% O2 partial pressures and various glucose concentrations (0, 0.5, 3, 5.5 and 22.5 mmol/l). Cell proliferation, extracellular matrix content, mitochondrial function, and cell metabolism were subsequently analyzed. The results demonstrated that hypoxia and a low glucose concentration inhibited cell growth, and low glucose concentration inhibited extracellular matrix synthesis and adenosine 5'-monophosphate-activated protein kinase expression. Hypoxic conditions also induced a compensatory increase in the number of mitochondria, whereas mitochondrial deformation and swelling were observed in the absence of glucose. According to this study, the primary metabolic pathway of TMJ disc cells is glycolysis. It was concluded that hypoxic conditions and normal glucose concentrations are needed for the growth of TMJ disc cells. Glucose is necessary to ensure cell survival, extracellular matrix synthesis and mitochondrial function. Glucose deficiency may be related to disc degeneration, aging and disease mechanisms.
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Affiliation(s)
- Fangrui Dong
- Key Laboratory of Dental Maxillofacial Reconstruction and Biological Intelligence Manufacturing, School of Stomatology, Lanzhou University, Lanzhou, Gansu 730000, P.R. China
| | - Pengfei Zhang
- Key Laboratory of Dental Maxillofacial Reconstruction and Biological Intelligence Manufacturing, School of Stomatology, Lanzhou University, Lanzhou, Gansu 730000, P.R. China
| | - Bin Ma
- Key Laboratory of Stomatology of State Ethnic Affairs Commission, Northwest Minzu University, Lanzhou, Gansu 730030, P.R. China
| | - Guangjie Bao
- Key Laboratory of Stomatology of State Ethnic Affairs Commission, Northwest Minzu University, Lanzhou, Gansu 730030, P.R. China
| | - Hong Kang
- Key Laboratory of Dental Maxillofacial Reconstruction and Biological Intelligence Manufacturing, School of Stomatology, Lanzhou University, Lanzhou, Gansu 730000, P.R. China
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Gao Z, Wang Q, Guo K, Li X, Huang Y. Enpp1 deficiency caused chondrocyte apoptosis by inhibiting AMPK signaling pathway. J Orthop Surg Res 2023; 18:462. [PMID: 37370114 DOI: 10.1186/s13018-023-03923-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Accepted: 06/11/2023] [Indexed: 06/29/2023] Open
Abstract
OBJECTIVE AND BACKGROUND The deficiency of ectonucleotide pyrophosphatase/phosphodiesterase 1 (Enpp1) causes the phenotype similar to knee osteoarthritis (OA). However, the molecular mechanism is poorly understood. METHOD The global deletion of Enpp1 (Enpp1-/-) mice was created to analyze the role of Enpp1 in the progress of knee OA. The apoptosis, proliferation and chondrogenic differentiation ability of chondrocytes from wild-type (WT) and Enpp1-/- joints were compared. According to the results of high-throughput quantitative molecular measurements, the proteins of chondrocytes from WT and Enpp1-/- mice were used to explore the mechanism of Enpp1 deficiency-associated knee OA. RESULT In Enpp1-/- knee joints, we found significant chondrocyte apoptosis and proteomic results showed that abnormal expression of AMP-activated protein kinase (AMPK) signaling pathway may contribute to this phenotype. In primary chondrocyte cultures in vitro, Enpp1 deletion dramatically enhancing chondrocyte apoptosis. Meanwhile, we found Enpp1 deletion inhibits the phosphorylation of AMPK (P-AMPK). We also found that decreased level of P-AMPK and chondrocyte apoptosis, which are caused by Enpp1 deficiency, can be reversed by Acadesine (AICAR), the activator of AMPK. CONCLUSION Consequently, Enpp1 deficiency plays an essential role in knee OA by regulating AMPK signaling pathway.
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Affiliation(s)
- Zhiqiang Gao
- Department of Spine Surgery, Shanghai East Hospital, School of Medicine, Tongji University, 150 Jimo Rd, Shanghai, 200092, China
| | - Qiang Wang
- Department of Spine Surgery, Shanghai East Hospital, School of Medicine, Tongji University, 150 Jimo Rd, Shanghai, 200092, China
| | - Kai Guo
- Department of Spine Surgery, Shanghai East Hospital, School of Medicine, Tongji University, 150 Jimo Rd, Shanghai, 200092, China
| | - Xinhua Li
- Department of Orthopedics, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200080, People's Republic of China.
| | - Yufeng Huang
- Department of Spine Surgery, Shanghai East Hospital, School of Medicine, Tongji University, 150 Jimo Rd, Shanghai, 200092, China.
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Friedman B, Larranaga-Vera A, Castro CM, Corciulo C, Rabbani P, Cronstein BN. Adenosine A2A receptor activation reduces chondrocyte senescence. FASEB J 2023; 37:e22838. [PMID: 36884388 DOI: 10.1096/fj.202201212rr] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2022] [Revised: 01/20/2023] [Accepted: 02/13/2023] [Indexed: 03/09/2023]
Abstract
Osteoarthritis (OA) pathogenesis is associated with reduced chondrocyte homeostasis and increased levels of cartilage cellular senescence. Chondrosenescence is the development of cartilage senescence that increases with aging joints and disrupts chondrocyte homeostasis and is associated with OA. Adenosine A2A receptor (A2AR) activation in cartilage via intra-articular injection of liposomal A2AR agonist, liposomal-CGS21680, leads to cartilage regeneration in vivo and chondrocyte homeostasis. A2AR knockout mice develop early OA isolated chondrocytes demonstrate upregulated expression of cellular senescence and aging-associated genes. Based on these observations, we hypothesized that A2AR activation would ameliorate cartilage senescence. We found that A2AR stimulation of chondrocytes reduced beta-galactosidase staining and regulated levels and cell localization of common senescence mediators p21 and p16 in vitro in the human TC28a2 chondrocyte cell line. In vivo analysis similarly showed A2AR activation reduced nuclear p21 and p16 in obesity-induced OA mice injected with liposomal-CGS21680 and increased nuclear p21 and p16 in A2AR knockout mouse chondrocytes compared to wild-type mice. A2AR agonism also increased activity of the chondrocyte Sirt1/AMPK energy-sensing pathway by enhancing nuclear Sirt1 localization and upregulating T172-phosphorylated (active) AMPK protein levels. Lastly, A2AR activation in TC28a2 and primary human chondrocytes reduced wild-type p53 and concomitantly increased p53 alternative splicing leading to increase in an anti-senescent p53 variant, Δ133p53α. The results reported here indicate that A2AR signaling promotes chondrocyte homeostasis in vitro and reduces OA cartilage development in vivo by reducing chondrocyte senescence.
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Affiliation(s)
- Benjamin Friedman
- Division of Rheumatology, New York University Grossman School of Medicine, New York, New York, USA.,Division of Translational Medicine, New York University Grossman School of Medicine, New York, New York, USA
| | - Ane Larranaga-Vera
- Division of Translational Medicine, New York University Grossman School of Medicine, New York, New York, USA
| | - Cristina M Castro
- Division of Translational Medicine, New York University Grossman School of Medicine, New York, New York, USA
| | - Carmen Corciulo
- Division of Translational Medicine, New York University Grossman School of Medicine, New York, New York, USA
| | - Piul Rabbani
- Division of Rheumatology, New York University Grossman School of Medicine, New York, New York, USA.,Hansjorg Wyss Department of Plastic Surgery, New York University Grossman School of Medicine, New York, New York, USA
| | - Bruce N Cronstein
- Division of Rheumatology, New York University Grossman School of Medicine, New York, New York, USA.,Division of Translational Medicine, New York University Grossman School of Medicine, New York, New York, USA
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Yao Q, Wu X, Tao C, Gong W, Chen M, Qu M, Zhong Y, He T, Chen S, Xiao G. Osteoarthritis: pathogenic signaling pathways and therapeutic targets. Signal Transduct Target Ther 2023; 8:56. [PMID: 36737426 PMCID: PMC9898571 DOI: 10.1038/s41392-023-01330-w] [Citation(s) in RCA: 197] [Impact Index Per Article: 197.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Revised: 01/06/2023] [Accepted: 01/17/2023] [Indexed: 02/05/2023] Open
Abstract
Osteoarthritis (OA) is a chronic degenerative joint disorder that leads to disability and affects more than 500 million population worldwide. OA was believed to be caused by the wearing and tearing of articular cartilage, but it is now more commonly referred to as a chronic whole-joint disorder that is initiated with biochemical and cellular alterations in the synovial joint tissues, which leads to the histological and structural changes of the joint and ends up with the whole tissue dysfunction. Currently, there is no cure for OA, partly due to a lack of comprehensive understanding of the pathological mechanism of the initiation and progression of the disease. Therefore, a better understanding of pathological signaling pathways and key molecules involved in OA pathogenesis is crucial for therapeutic target design and drug development. In this review, we first summarize the epidemiology of OA, including its prevalence, incidence and burdens, and OA risk factors. We then focus on the roles and regulation of the pathological signaling pathways, such as Wnt/β-catenin, NF-κB, focal adhesion, HIFs, TGFβ/ΒΜP and FGF signaling pathways, and key regulators AMPK, mTOR, and RUNX2 in the onset and development of OA. In addition, the roles of factors associated with OA, including MMPs, ADAMTS/ADAMs, and PRG4, are discussed in detail. Finally, we provide updates on the current clinical therapies and clinical trials of biological treatments and drugs for OA. Research advances in basic knowledge of articular cartilage biology and OA pathogenesis will have a significant impact and translational value in developing OA therapeutic strategies.
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Affiliation(s)
- Qing Yao
- Department of Biochemistry, School of Medicine, Shenzhen Key Laboratory of Cell Microenvironment, Guangdong Provincial Key Laboratory of Cell Microenvironment and Disease Research, Southern University of Science and Technology, Shenzhen, 518055, China.
| | - Xiaohao Wu
- Department of Biochemistry, School of Medicine, Shenzhen Key Laboratory of Cell Microenvironment, Guangdong Provincial Key Laboratory of Cell Microenvironment and Disease Research, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Chu Tao
- Department of Biochemistry, School of Medicine, Shenzhen Key Laboratory of Cell Microenvironment, Guangdong Provincial Key Laboratory of Cell Microenvironment and Disease Research, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Weiyuan Gong
- Department of Biochemistry, School of Medicine, Shenzhen Key Laboratory of Cell Microenvironment, Guangdong Provincial Key Laboratory of Cell Microenvironment and Disease Research, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Mingjue Chen
- Department of Biochemistry, School of Medicine, Shenzhen Key Laboratory of Cell Microenvironment, Guangdong Provincial Key Laboratory of Cell Microenvironment and Disease Research, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Minghao Qu
- Department of Biochemistry, School of Medicine, Shenzhen Key Laboratory of Cell Microenvironment, Guangdong Provincial Key Laboratory of Cell Microenvironment and Disease Research, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Yiming Zhong
- Department of Biochemistry, School of Medicine, Shenzhen Key Laboratory of Cell Microenvironment, Guangdong Provincial Key Laboratory of Cell Microenvironment and Disease Research, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Tailin He
- Department of Biochemistry, School of Medicine, Shenzhen Key Laboratory of Cell Microenvironment, Guangdong Provincial Key Laboratory of Cell Microenvironment and Disease Research, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Sheng Chen
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
| | - Guozhi Xiao
- Department of Biochemistry, School of Medicine, Shenzhen Key Laboratory of Cell Microenvironment, Guangdong Provincial Key Laboratory of Cell Microenvironment and Disease Research, Southern University of Science and Technology, Shenzhen, 518055, China.
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Jiang A, Xu P, Yang Z, Zhao Z, Tan Q, Li W, Song C, Dai H, Leng H. Increased Sparc release from subchondral osteoblasts promotes articular chondrocyte degeneration under estrogen withdrawal. Osteoarthritis Cartilage 2023; 31:26-38. [PMID: 36241137 DOI: 10.1016/j.joca.2022.08.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Revised: 07/08/2022] [Accepted: 08/04/2022] [Indexed: 02/02/2023]
Abstract
OBJECTIVE The incidence of osteoarthritis (OA) in menopausal women is significantly higher than in same-aged men. Investigating the role of subchondral osteoblasts in estrogen deficiency-induced OA may help elucidate the pathological mechanism, providing new insights for the diagnosis and treatment of menopausal OA. METHODS A classical ovariectomy-induced OA (OVX-OA) rat model was utilized to isolate primary articular chondrocytes and subchondral osteoblasts, which were identified and then cocultured in Transwell. The expression of chondrocyte anabolic and catabolic indicators was evaluated. The differentially expressed proteins in the conditioned medium (CM) of osteoblasts were identified by Liquid Chromatograph-Mass Spectrometer (LC-MS/MS). Normal chondrocytes were treated with osteoblast CM, and then RNA sequencing was performed on the treated chondrocytes. KEGG was used to identify significant enrichment of signaling pathways, and Simple Western was used to verify the expression of related proteins in the signaling pathways. RESULTS Coculture of OVX-OA subchondral osteoblasts with chondrocytes significantly downregulated the expression of the anabolic indicators and upregulated the expression of the catabolic indicators in chondrocytes. 1,601 proteins were identified in both normal and OVX osteoblast culture supernatants. Protein-protein interaction network analysis revealed that Sparc was one of the hub proteins. The AMPK/Foxo3a signaling pathway of chondrocytes was downregulated by OVX-OA osteoblasts CM. AICAR, the AMPK agonist, partially reversed the catabolic effect of OVX-OA osteoblasts on chondrocytes. CONCLUSIONS Sparc secreted by OVX-OA subchondral osteoblasts can downregulate the AMPK/Foxo3a signaling pathway of chondrocytes, thereby promoting chondrocyte degeneration.
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Affiliation(s)
- A Jiang
- Department of Orthopedics, Peking University Third Hospital, Beijing 100191, China; Department of General Surgery, Beijing Pinggu Hospital, Beijing 101299, China
| | - P Xu
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Z Yang
- Department of Orthopedics, Peking University Third Hospital, Beijing 100191, China
| | - Z Zhao
- Department of Orthopedics, Peking University Third Hospital, Beijing 100191, China
| | - Q Tan
- Department of Orthopedics, Peking University Third Hospital, Beijing 100191, China
| | - W Li
- Department of Orthopedics, Peking University Third Hospital, Beijing 100191, China; Engineering Research Center of Bone and Joint Precision Medicine, Beijing 100191, China
| | - C Song
- Department of Orthopedics, Peking University Third Hospital, Beijing 100191, China; Beijing Key Lab of Spine Diseases, Beijing 100191, China
| | - H Dai
- Department of Immunology, School of Basic Medical Sciences, NHC Key Laboratory of Medical Immunology, Peking University, Beijing 100191, China
| | - H Leng
- Department of Orthopedics, Peking University Third Hospital, Beijing 100191, China.
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Chen Y, Liu Y, Jiang K, Wen Z, Cao X, Wu S. Linear ubiquitination of LKB1 activates AMPK pathway to inhibit NLRP3 inflammasome response and reduce chondrocyte pyroptosis in osteoarthritis. J Orthop Translat 2022; 39:1-11. [PMID: 36514784 PMCID: PMC9719095 DOI: 10.1016/j.jot.2022.11.002] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Revised: 10/11/2022] [Accepted: 11/07/2022] [Indexed: 12/03/2022] Open
Abstract
Background Osteoarthritis (OA) is the most common chronic disease. It is characterized by high levels of clinical heterogeneity and low inflammation. Therefore, elucidation of the mechanisms that regulate gene expression is critical for developing effective OA therapies. This study aimed to explore the role of LKB1/AMPK in the progression of OA. Methods Anterior cruciate ligament transection (ACLT) was performed on Sprague Dawley (SD) rats right knee to construct OA model, followed by AICAR [AMP-activated protein kinase (AMPK) activator] treatment. The level changes [AMPK, IL-10, IL-13, IL-1β, TNF-α, IL-6, ASC, Caspase-1, Ki67, and hibit Nod-like receptor protein 3 (NLRP3)] and the degree of tissue injury were assessed by western blot, Immunohistochemical (IHC), Enzyme-linked immunosorbent assay (ELISA), Hematoxylin-eosin staining (HE), Immunofluorescence (IF), Terminal deoxynucleotidyl transferase dUTP nick-end labeling (TUNEL) assay, and Safranin O and Fast Green staining (S-O). Human chondrocytes were induced by LPS to construct a cellular inflammatory model, and then transfected with oe-AMPK or oe-HOIL-1-interacting protein (HOIP). Cell viability/apoptotic and intracellular content of AMPK, HOIP, IL-1β, IL-10, IL-13, TNF-α, IL-6, ASC, NLRP3 and Caspase-1 were measured by western blot, ELISA, CCK-8, IF, flow cytometry and TUNEL assays. Results After AICAR treatment with OA rats, the expression of p-AMPK, IL-10, IL-13, Ki67 and Bcl-2 increased, the level of NLRP3 inflammasome, TNF-α, IL-6, Bax and Caspase-3 levels were decreased, and tissue damage and apoptosis were significantly alleviated. After transfected with oe-LKB1, chondrocyte activity and LKB1 linear ubiquitination were enhanced, and the level of HOIP, p-AMPK, IL-10 and IL-13 were increased. In contrast, NLRP3 inflammasome (ASC, NLRP3, Caspase-1, IL-1β, and cleaved Caspase-1), TNF-α, and IL-6 levels decreased, apoptosis rate and TUNEL positive rate were attenuated. Conclusion LKB1/AMPK pathway significantly ameliorated NLRP3 inflammasome response and chondrocyte injury. Activation of AMPK pathway by linear ubiquitination of LKB1 may be a potential target for OA treatment. The translational potential of this article This study highlights the importance of the LKB1/AMPK pathway in NLRP3 inflammatory body response and chondrocyte injury. Activation of LKB1 by modulating linear ubiquitination may be a potential target for OA treatment.
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Affiliation(s)
- Yang Chen
- Department of Orthopedics, Third Xiangya Hospital of Central South University, Changsha, 410013, China,Department of Orthopedics, Haikou People's Hospital/Haikou Affiliated Hospital of Central South University, Xiangya School of Medicine, Hai Kou, 570100, China
| | - Yiheng Liu
- Department of Orthopedics, Haikou People's Hospital/Haikou Affiliated Hospital of Central South University, Xiangya School of Medicine, Hai Kou, 570100, China
| | - Kai Jiang
- Department of Orthopedics, Second Xiangya Hospital of Central South University, Changsha, 410011, China
| | - Zi Wen
- Department of Orthopedics, Third Xiangya Hospital of Central South University, Changsha, 410013, China
| | - Xu Cao
- Department of Orthopedics, Third Xiangya Hospital of Central South University, Changsha, 410013, China,Institute of Basic Medicine and Cancer (IBMC), Chinese Academy of Sciences, Hangzhou, 310022, China,Corresponding author. Department of Orthopedics, Third Xiangya Hospital of Central South University, Changsha, 410013, China.
| | - Song Wu
- Department of Orthopedics, Third Xiangya Hospital of Central South University, Changsha, 410013, China,Corresponding author.
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Metformin Prevents or Delays the Development and Progression of Osteoarthritis: New Insight and Mechanism of Action. Cells 2022; 11:cells11193012. [PMID: 36230974 PMCID: PMC9563728 DOI: 10.3390/cells11193012] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2022] [Revised: 09/23/2022] [Accepted: 09/24/2022] [Indexed: 11/17/2022] Open
Abstract
For over 60 years, metformin has been widely prescribed by physicians to treat type 2 diabetes. Along with more in-depth research on metformin and its molecular mechanism in recent decades, metformin has also been proposed as an effective drug to prevent or delay musculoskeletal disorders, including osteoarthritis (OA). The occurrence and development of OA are deemed to be associated with the impaired mitochondrial functions of articular chondrocytes. Metformin can activate the pathways and expressions of both AMPK and SIRT1 so as to protect the mitochondrial function of chondrocytes, thereby promoting osteoblast production. Moreover, the clinical significance of the metformin combination therapy in preventing OA has also been demonstrated. This review aimed to comprehensively summarize the current research progress on metformin as a proposed drug for OA prevention or treatment.
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11
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Song Y, Wu Z, Zhao P. The effects of metformin in the treatment of osteoarthritis: Current perspectives. Front Pharmacol 2022; 13:952560. [PMID: 36081941 PMCID: PMC9445495 DOI: 10.3389/fphar.2022.952560] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Accepted: 07/27/2022] [Indexed: 02/04/2023] Open
Abstract
Osteoarthritis is a chronic and irreversible disease of the locomotor system which is closely associated with advancing age. Pain and limited mobility frequently affect the quality of life in middle-aged and older adults. With a global population of more than 350 million, osteoarthritis is becoming a health threat alongside cancer and cardiovascular disease. It is challenging to find effective treatments to promote cartilage repair and slow down disease progression. Metformin is the first-line drug for patients with type 2 diabetes, and current perspectives suggest that it cannot only lower glucose but also has anti-inflammatory and anti-aging properties. Experimental studies applying metformin for the treatment of osteoarthritis have received much attention in recent years. In our review, we first presented the history of metformin and the current status of osteoarthritis, followed by a brief review of the mechanism that metformin acts, involving AMPK-dependent and non-dependent pathways. Moreover, we concluded that metformin may be beneficial in the treatment of osteoarthritis by inhibiting inflammation, modulating autophagy, antagonizing oxidative stress, and reducing pain levels. Finally, we analyzed the relevant evidence from animal and human studies. The potential of metformin for the treatment of osteoarthritis deserves to be further explored.
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Iijima H, Gilmer G, Wang K, Sivakumar S, Evans C, Matsui Y, Ambrosio F. Meta-analysis Integrated With Multi-omics Data Analysis to Elucidate Pathogenic Mechanisms of Age-Related Knee Osteoarthritis in Mice. J Gerontol A Biol Sci Med Sci 2022; 77:1321-1334. [PMID: 34979545 PMCID: PMC9255692 DOI: 10.1093/gerona/glab386] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Indexed: 01/05/2023] Open
Abstract
Increased mechanistic insight into the pathogenesis of knee osteoarthritis (KOA) is needed to develop efficacious disease-modifying treatments. Though age-related pathogenic mechanisms are most relevant to the majority of clinically presenting KOA, the bulk of our mechanistic understanding of KOA has been derived using surgically induced posttraumatic OA (PTOA) models. Here, we took an integrated approach of meta-analysis and multi-omics data analysis to elucidate pathogenic mechanisms of age-related KOA in mice. Protein-level data were integrated with transcriptomic profiling to reveal inflammation, autophagy, and cellular senescence as primary hallmarks of age-related KOA. Importantly, the molecular profiles of cartilage aging were unique from those observed following PTOA, with less than 3% overlap between the 2 models. At the nexus of the 3 aging hallmarks, advanced glycation end product (AGE)/receptor for AGE (RAGE) emerged as the most statistically robust pathway associated with age-related KOA. This pathway was further supported by analysis of mass spectrometry data. Notably, the change in AGE-RAGE signaling over time was exclusively observed in male mice, suggesting sexual dimorphism in the pathogenesis of age-induced KOA in murine models. Collectively, these findings implicate dysregulation of AGE-RAGE signaling as a sex-dependent driver of age-related KOA.
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Affiliation(s)
- Hirotaka Iijima
- Department of Physical Medicine and Rehabilitation, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
- Japan Society for the Promotion of Science, Tokyo, Japan
| | - Gabrielle Gilmer
- Medical Scientist Training Program, School of Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
- Department of Bioengineering, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Kai Wang
- Department of Physical Medicine and Rehabilitation, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Sruthi Sivakumar
- Department of Physical Medicine and Rehabilitation, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
- Department of Bioengineering, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Christopher Evans
- Rehabilitation Medicine Research Center, Mayo Clinic, Rochester, Minnesota, USA
| | - Yusuke Matsui
- Biomedical and Health Informatics Unit, Graduate School of Medicine, Nagoya University, Nagoya, Japan
| | - Fabrisia Ambrosio
- Department of Physical Medicine and Rehabilitation, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
- Department of Bioengineering, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
- Department of Environmental and Occupational Health, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
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13
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Liu Q, Pian K, Tian Z, Duan H, Wang Q, Zhang H, Shi L, Song D. Calcium-binding protein 39 overexpression promotes macrophages from 'M1' into 'M2' phenotype and improves chondrocyte damage in osteoarthritis by activating the AMP-activated protein kinase/sirtuin 1 axis. Bioengineered 2022; 13:9855-9871. [PMID: 35412939 PMCID: PMC9162023 DOI: 10.1080/21655979.2022.2061289] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Osteoarthritis (OA) is a degenerative joint disease that affects cartilage and its peripheral tissues. Up-regulation of Calcium-binding protein 39 (CAB39) has a significant protective effect on osteoblasts, but the role and related molecular mechanisms of CAB39 in OA have not yet been reported. CAB39 overexpression and knockdown models were set up in chondrocytes (ATDC5) and macrophages (RAW264.7). The OA cell model was induced in ATDC5 cells with IL-1β (10 ng/mL). Cell viability was tested by the cell counting kit-8 assay, apoptosis was checked by flow cytometry. Western blot was applied for checking the expression of MMP3, MMP13, Aggrecan, the AMPK/Sirt-1 pathway, apoptosis-related proteins (Bax, Bcl-2, and Caspase-3), and macrophage phenotypic markers (CD86, iNOS, CD206, and Arg1). An OA model was constructed in mice, and CAB39 overexpression plasmids were administered to the knee cavity of the OA model mice. As a result, CAB39 was down-regulated in IL-1β-treated chondrocytes and OA mice. Overexpressing CAB39 enhanced ATDC5 cell viability and choked IL-1β-mediated apoptosis. Overexpression of CAB39 boosted the polarization of macrophages from M1-phenotype into M2 phenotype. In addition, overexpressing CAB39 facilitated the AMPK/Sirt-1 pathway activation, and AMPK inhibitors reversed the protective effect of CAB39 overexpression on chondrocytes. Moreover, CAB39 exhibited anti-inflammatory effects in OA mice by activating the AMPK/Sirt-1 pathway. Collectively, overexpressing CAB39 heightened macrophages’ M2 polarization and declined chondrocyte injury in OA by activating the AMPK/Sirt-1 pathway.Abbreviations
AMPK: AMP-activated protein kinaseArg1: arginase 1Bax: Bcl-2-associated X proteinBcl-2: B-cell lymphoma-2CAB39: Calcium-binding protein 39CM: Conditioned mediumDMM: destabilization of the medial meniscusECM: extracellular matrixELISA: enzyme-linked immunosorbent assayFCM: Flow cytometryIL-1β: interleukin-1βIL-4: interleukin-4IL-6: interleukin-6IL-10: interleukin-10IFN – γ: Interferon-gammaIHC: ImmunohistochemistryiNOS: Inducible nitric oxide synthaseLKB1: liver kinase B1MMP3: Matrix metalloproteinase3MMP13:Matrix metalloproteinase13NF-κB: NF-kappaBOA: OsteoarthritisqRT-PCR: Quantitative reverse transcription-polymerase chain reactionRT: room temperatureSirt-1: sirtuin 1STRAD: STE20-related adaptor alphaWB: Western blot
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Affiliation(s)
- Qiuliang Liu
- Department of Pediatric Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou Henan, China
| | - Kai Pian
- Department of Pediatric Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou Henan, China
| | - Zhen Tian
- Department of Pediatric Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou Henan, China
| | - Haitao Duan
- Department of Pediatric Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou Henan, China
| | - Qi Wang
- Department of Pediatric Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou Henan, China
| | - Hui Zhang
- Department of Pediatric Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou Henan, China
| | - Longyan Shi
- Department of Pediatric Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou Henan, China
| | - Dongjian Song
- Department of Pediatric Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou Henan, China
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Song Y, Wu Z, Zhao P. The Function of Metformin in Aging-Related Musculoskeletal Disorders. Front Pharmacol 2022; 13:865524. [PMID: 35392559 PMCID: PMC8982084 DOI: 10.3389/fphar.2022.865524] [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: 01/30/2022] [Accepted: 02/21/2022] [Indexed: 12/22/2022] Open
Abstract
Metformin is a widely accepted first-line hypoglycemic agent in current clinical practice, and it has been applied to the clinic for more than 60 years. Recently, researchers have identified that metformin not only has an efficient capacity to lower glucose but also exerts anti-aging effects by regulating intracellular signaling molecules. With the accelerating aging process and mankind’s desire for a long and healthy life, studies on aging have witnessed an unprecedented boom. Osteoporosis, sarcopenia, degenerative osteoarthropathy, and frailty are age-related diseases of the musculoskeletal system. The decline in motor function is a problem that many elderly people have to face, and in serious cases, they may even fail to self-care, and their quality of life will be seriously reduced. Therefore, exploring potential treatments to effectively prevent or delay the progression of aging-related diseases is essential to promote healthy aging. In this review, we first briefly describe the origin of metformin and the aging of the movement system, and next review the evidence associated with its ability to extend lifespan. Furthermore, we discuss the mechanisms related to the modulation of aging in the musculoskeletal system by metformin, mainly its contribution to bone homeostasis, muscle aging, and joint degeneration. Finally, we analyze the protective benefits of metformin in aging-related diseases of the musculoskeletal system.
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Affiliation(s)
- Yanhong Song
- Department of Anesthesiology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Ziyi Wu
- Department of Anesthesiology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Ping Zhao
- Department of Anesthesiology, Shengjing Hospital of China Medical University, Shenyang, China
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15
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Yang Q, Shi Y, Jin T, Duan B, Wu S. Advanced Glycation End Products Induced Mitochondrial Dysfunction of Chondrocytes through Repression of AMPKα-SIRT1-PGC-1α Pathway. Pharmacology 2022; 107:298-307. [PMID: 35240662 DOI: 10.1159/000521720] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2021] [Accepted: 12/20/2021] [Indexed: 11/19/2022]
Abstract
INTRODUCTION Our previous studies have demonstrated advanced glycation end products (AGEs) was an important mediator in osteoarthritis (OA) which may induce mitochondrial dysfunction. AMP-activated protein kinase (AMPK), sirtuin 1 (SIRT1), and its downstream target peroxisome proliferator-activated receptor gamma coactivator-1α (PGC-1α) are the critical sensors that regulate mitochondrial biogenesis and have been recognized as therapeutic targets in OA. This study was designed to test whether AGEs caused mitochondrial dysfunction through modulation of AMPKα/SIRT1/PGC-1α. METHODS We knocked down or overexpressed AMPKα, SIRT1, and PGC-1α by small interfering RNA or plasmid DNA transfection, respectively. Mitochondrial membrane potential (△Ψ) was detected by tetraethylbenzimidazolyl carbocyanine iodide (JC-1) fluorescence probe. RESULTS The results showed that AGEs impaired △Ψ, intracellular ATP level, and mitochondrial DNA content, linked to decreased AMPKα, SIRT1, and PGC-1α expression in chondrocyte. AMPKα pharmacologic activation or overexpression of AMPKα, SIRT1, and PGC-1α reversed impairments of mitochondrial biogenesis, oxidative stress, and inflammation in AGEs-induced chondrocytes. However, AMPKα activation using AICAR had decreased capacity to increase each of those same effect readouts in AGEs-treated SIRT1-siRNA or PGC-1α-siRNA chondrocyte. CONCLUSION Taken together, AGEs reduced the AMPKα/SIRT1/PGC-1α signaling in chondrocytes, leading to mitochondrial dysfunction as a result of increased oxidative stress, inflammation, and apoptosis. These results indicated that target AMPK may be as a novel therapeutic strategy for AGEs-related OA prevention.
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Affiliation(s)
- Qingshan Yang
- Department of Orthopaedics, Gan Su Province Hospital, Lan Zhou, China
| | - Yucong Shi
- Department of Orthopaedics, Gan Su Province Hospital, Lan Zhou, China.,Gansu University of Chinese Medicine, Lan Zhou, China
| | - Tao Jin
- Department of Orthopaedics, Gan Su Province Hospital, Lan Zhou, China.,Gansu University of Chinese Medicine, Lan Zhou, China
| | - Bowen Duan
- Department of Pharmacy, Gan Su ProvincTe Hospital, Lan Zhou, China
| | - Shujin Wu
- Department of Pharmacy, Gan Su ProvincTe Hospital, Lan Zhou, China
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Liu D, Cai ZJ, Yang YT, Lu WH, Pan LY, Xiao WF, Li YS. Mitochondrial quality control in cartilage damage and osteoarthritis: new insights and potential therapeutic targets. Osteoarthritis Cartilage 2022; 30:395-405. [PMID: 34715366 DOI: 10.1016/j.joca.2021.10.009] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Revised: 10/15/2021] [Accepted: 10/21/2021] [Indexed: 02/02/2023]
Abstract
Osteoarthritis (OA) is a multifactorial arthritic disease of weight-bearing joints concomitant with chronic and intolerable pain, loss of locomotion and impaired quality of life in the elderly population. Although the prevalence of OA increases with age, its specific mechanisms have not been elucidated and effective therapeutic disease-modifying drugs have not been developed. As essential organelles in chondrocytes, mitochondria supply energy and play vital roles in cellular metabolism, proliferation and apoptosis. Mitochondrial quality control (MQC) is the key mechanism to coordinate various mitochondrial biofunctions, primarily through mitochondrial biogenesis, dynamics, autophagy and the newly discovered mitocytosis. An increasing number of studies have revealed that a loss of MQC homeostasis contributes to the cartilage damage during the occurrence and development of OA. Several master MQC-associated signaling pathways and regulators exert chondroprotective roles in OA, while cartilage damage-related molecular mechanisms have been partially identified. In this review, we summarized known mechanisms mediated by dysregulated MQC in the pathogenesis of OA and latent bioactive ingredients and drugs for the prevention and treatment of OA through the maintenance of MQC.
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Affiliation(s)
- D Liu
- Department of Orthopedics, Xiangya Hospital, Central South University, Changsha 410008, Hunan, China
| | - Z-J Cai
- Department of Orthopedics, Xiangya Hospital, Central South University, Changsha 410008, Hunan, China
| | - Y-T Yang
- Department of Orthopedics, Xiangya Hospital, Central South University, Changsha 410008, Hunan, China
| | - W-H Lu
- Department of Orthopedics, Xiangya Hospital, Central South University, Changsha 410008, Hunan, China
| | - L-Y Pan
- Department of Orthopedics, Xiangya Hospital, Central South University, Changsha 410008, Hunan, China
| | - W-F 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.
| | - Y-S 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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17
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Burton LH, Afzali MF, Radakovich LB, Campbell MA, Culver LA, Olver CS, Santangelo KS. Systemic administration of a pharmacologic iron chelator reduces cartilage lesion development in the Dunkin-Hartley model of primary osteoarthritis. Free Radic Biol Med 2022; 179:47-58. [PMID: 34923104 PMCID: PMC8760171 DOI: 10.1016/j.freeradbiomed.2021.12.257] [Citation(s) in RCA: 6] [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: 01/25/2021] [Revised: 12/10/2021] [Accepted: 12/13/2021] [Indexed: 02/03/2023]
Abstract
Iron has been emerging as a key contributor to aging-associated, chronic disorders due to the propensity for generating reactive oxygen species. To date, there are a limited number of publications exploring the role of iron in the pathogenesis of primary/age-related osteoarthritis (OA). The objective of this study was to determine whether reduced iron via pharmacologic iron chelation with deferoxamine (DFO) affected the development and/or severity of cartilage lesions in a primary OA model. At 12-weeks-of-age, 15 male Dunkin-Hartley guinea pigs received either 46 mg/kg DFO (n = 8) or vehicle control (n = 7) injected subcutaneously twice daily for five days each week. Movement changes, captured via overhead enclosure monitoring, were also determined. Termination occurred at 30-weeks-of-age. Iron was quantified in serum, urine, liver, and femoral head articular cartilage. Left knees were evaluated for: structural changes using histopathology guidelines; and immunohistochemistry. Gene expression analysis was conducted on right knee articular cartilage. DFO reduced iron levels in femoral head articular cartilage (p = 0.0006) and liver (p = 0.02), and increased iron within urine (p = 0.04) and serum (p = 0.0009). Mobility of control animals declined, while the DFO group maintained activity levels similar to the first month of treatment (p = 0.05). OA-associated cartilage lesions were reduced in knees of DFO animals (p = 0.0001), with chondrocyte hypocellularity a key histologic difference between groups (p < 0.0001). DFO-receiving animals had increased immunostaining for phosphorylated adenosine monophosphate activated protein kinase alpha within knee articular cartilage; lower transcript counts of several proapoptotic genes (p = 0.04-0.0004) and matrix-degrading enzymes (p = 0.02-<0.0001), and increased expression of the anti-apoptotic gene Bcl-2 (p < 0.0001) and a tissue inhibitor of matrix-metalloproteinases (p = 0.03) were also observed. These results suggest that iron chelation delayed the progression of primary OA in an animal model and could hold potential as a translational intervention. These findings provide expanded insight into factors that may contribute to the pathogenesis of primary OA.
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Affiliation(s)
- Lindsey H Burton
- Department of Environmental and Radiological Health Sciences, Colorado State University, Fort Collins, CO, USA
| | - Maryam F Afzali
- Department of Microbiology, Immunology, and Pathology, Colorado State University, Fort Collins, CO, USA
| | - Lauren B Radakovich
- Department of Microbiology, Immunology, and Pathology, Colorado State University, Fort Collins, CO, USA
| | - Margaret A Campbell
- Department of Microbiology, Immunology, and Pathology, Colorado State University, Fort Collins, CO, USA
| | - Lauren A Culver
- Department of Microbiology, Immunology, and Pathology, Colorado State University, Fort Collins, CO, USA
| | - Christine S Olver
- Department of Microbiology, Immunology, and Pathology, 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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18
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Li J, Wang Y, Chen D, Liu-Bryan R. Oral administration of berberine limits post-traumatic osteoarthritis development and associated pain via AMP-activated protein kinase (AMPK) in mice. Osteoarthritis Cartilage 2022; 30:160-171. [PMID: 34687898 PMCID: PMC8712393 DOI: 10.1016/j.joca.2021.10.004] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Revised: 09/30/2021] [Accepted: 10/18/2021] [Indexed: 02/02/2023]
Abstract
OBJECTIVE We investigated the effect of berberine, a natural plant product that can activate AMP-activated protein kinase (AMPK), on Osteoarthritis (OA) development and associated pain in mice. DESIGN Human primary knee chondrocytes were utilized to investigate how AMPK is activated by berberine. Both global knockout (KO) of AMPKα1 and congenic wild type (WT) mice were subjected to the post-traumatic OA through destabilization of medial meniscus (DMM) surgery. Two weeks after surgery, the mice were randomly divided into two groups with one group receiving berberine chloride daily via drinking water and were sacrificed at 6 and 12 weeks after surgery. OA severity was assessed by histological and histomorphometric analyses of cartilage degradation, synovitis, and osteophyte formation. OA-associated pain behavior was also determined. Immunohistochemistry (IHC) analyses were carried out to examine changes in AMPK signaling. RESULTS Berberine induced phosphorylation of AMPKα (Thr172) via liver kinase B1 (LKB1), the major upstream kinase of AMPK, in chondrocytes in vitro. Both WT and AMPKα1KO developed OA and associated pain post DMM surgery. However, treatment with berberine significantly reduced severity of OA and associated pain in WT but not AMPKα1KO mice. IHC analysis of WT DMM knee cartilage further revealed that berberine inhibited concomitant loss of expression and phosphorylation of AMPKα and expression of SIRT1 and SIRT3, suggesting an important role of activation of AMPK signaling in mediating beneficial effect of berberine. CONCLUSIONS Berberine acts through AMPK to reduce joint structural damage and pain associated with post-traumatic OA in mice in vivo.
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Affiliation(s)
- Jun Li
- Department of Orthopedic Surgery, Rush University Medical Center, Chicago, Illinois, USA
| | - Yun Wang
- Department of Medicine, University of California San Diego, La Jolla, USA.,Present address: Valo Health, Lexington, MA, USA
| | - Di Chen
- Department of Orthopedic Surgery, Rush University Medical Center, Chicago, Illinois, USA.,Present address: Faculty of Pharmaceutical Sciences, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
| | - Ru Liu-Bryan
- VA San Diego Healthcare System, San Diego, USA.,Department of Medicine, University of California San Diego, La Jolla, USA.,Correspondence to: Ru Liu-Bryan, VA San Diego Healthcare System, 111K, 3350 La Jolla Village Drive, San Diego, CA 92161. Telephone: 858 552 8585. Fax: 858 552 7425. , or Di Chen, Faculty of Pharmaceutical Sciences, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China. Telephone: 86-0755-8658-5255. Fax: 86-0755-8639-2299.
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Sanse Powder Essential Oil Nanoemulsion Negatively Regulates TRPA1 by AMPK/mTOR Signaling in Synovitis: Knee Osteoarthritis Rat Model and Fibroblast-Like Synoviocyte Isolates. Mediators Inflamm 2021; 2021:4736670. [PMID: 34876884 PMCID: PMC8645395 DOI: 10.1155/2021/4736670] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Revised: 10/16/2021] [Accepted: 11/06/2021] [Indexed: 02/06/2023] Open
Abstract
Synovitis is the primary driving factor for the occurrence and development of knee osteoarthritis (KOA) and fibroblast-like synoviocytes (FLSs) and plays a crucial role during this process. Our previous works revealed that transient receptor potential ankyrin 1 (TRPA1) ion channels mediate the amplification of KOA synovitis. In recent years, essential oils have been proved to have blocking effect on transient receptor potential channels. Meanwhile, the therapeutic effect of Sanse Powder on KOA synovitis has been confirmed in clinical trials and basic studies; although, the mechanism remains unclear. In the present study, Sanse Powder essential oil nanoemulsion (SP-NEs) was prepared, and then chemical composition, physicochemical properties, and stability were investigated. Besides, both in MIA-induced KOA rats and in LPS-stimulated FLSs, we investigated whether SP-NES could alleviate KOA synovitis by interfering with AMP-activated protein kinase- (AMPK-) mammalian target of rapamycin (mTOR), an energy sensing pathway proved to negatively regulate the TRPA1. Our research shows that the top three substances in SP-NEs were tumerone, delta-cadinene, and Ar-tumerone, which accounted for 51.62% of the total, and should be considered as the main pharmacodynamic ingredient. Less inflammatory cell infiltration and type I collagen deposition were found in the synovial tissue of KOA rats treated with SP-NEs, as well as the downregulated expressions of interleukin (IL)-1β, IL-18, and TRPA1. Besides, SP-NEs increased the phosphorylation level of AMPK and decreased the phosphorylation level of mTOR in the KOA model, and SP-NEs also upregulated expressions of peroxisome proliferator-activated receptor-gamma (PPARγ) and PPARγ coactivator-1α and downstream signaling molecules of AMPK-mTOR in vivo and in vitro. To conclude, a kind of Chinese herbal medicine for external use which is effective in treating synovitis of KOA was extracted and prepared into essential oil nanoemulsion with stable properties in the present study. It may alleviate synovitis in experimental KOA through the negative regulation of TRPA1 by AMPK-mTOR signaling.
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20
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Minton DM, Elliehausen CJ, Javors MA, Santangelo KS, Konopka AR. Rapamycin-induced hyperglycemia is associated with exacerbated age-related osteoarthritis. Arthritis Res Ther 2021; 23:253. [PMID: 34620223 PMCID: PMC8495984 DOI: 10.1186/s13075-021-02637-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Accepted: 09/29/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The objective of this study was to determine if mechanistic target of rapamycin (mTOR) inhibition with or without AMP-activated protein kinase (AMPK) activation can protect against primary, age-related OA. DESIGN Dunkin-Hartley guinea pigs develop mild primary OA pathology by 5 months of age that progresses to moderate OA by 8 months of age. At 5 months, guinea pigs served as young control (n = 3) or were fed either a control diet (n = 8), a diet enriched with the mTOR-inhibitor rapamycin (Rap, 14 ppm, n = 8), or Rap with the AMPK-activator metformin (Rap+Met, 1000 ppm, n = 8) for 12 weeks. Knee joints were evaluated by OARSI scoring, micro-computed tomography, and immunohistochemistry. Glenohumeral articular cartilage was collected for western blotting. RESULTS Rap- and Rap+Met-treated guinea pigs displayed lower body weight than control. Rap and Rap+Met inhibited articular cartilage mTORC1 but not mTORC2 signaling. Rap+Met, but not Rap alone, stimulated AMPK. Despite lower body weight and articular cartilage mTORC1 inhibition, Rap- and Rap+Met-treated guinea pigs had greater OA severity in the medial tibial plateau due to articular cartilage structural damage and/or proteoglycan loss. Rap and Rap+Met increased plasma glucose compared to control. Plasma glucose concentration was positively correlated with proteoglycan loss, suggesting hyperglycemic stress after Rap treatment was related to worsened OA. CONCLUSIONS This is the first study to show that Rap induced increase in plasma glucose was associated with greater OA severity. Further, articular cartilage mTORC1 inhibition and bodyweight reduction by dietary Rap and Rap+Met did not appear to protect against primary OA during the prevailing hyperglycemia.
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Affiliation(s)
- Dennis M Minton
- Division of Geriatrics and Gerontology, Department of Medicine, University of Wisconsin-Madison, Madison, Wisconsin, USA
- Department of Kinesiology, University of Illinois at Urbana-Champaign, Champaign, Illinois , USA
| | - Christian J Elliehausen
- Division of Geriatrics and Gerontology, Department of Medicine, University of Wisconsin-Madison, Madison, Wisconsin, USA
- Department of Kinesiology, University of Illinois at Urbana-Champaign, Champaign, Illinois , USA
| | - Martin A Javors
- Departments of Psychiatry and Pharmacology, University of Texas Health Science Center at San Antonio, San Antonio, Texas, USA
| | - Kelly S Santangelo
- Department of Microbiology, Immunology, Pathology, Colorado State University, Fort Collins, Colorado, USA
| | - Adam R Konopka
- Division of Geriatrics and Gerontology, Department of Medicine, University of Wisconsin-Madison, Madison, Wisconsin, USA.
- Department of Kinesiology, University of Illinois at Urbana-Champaign, Champaign, Illinois , USA.
- Geriatric Research, Education, and Clinical Center, William S. Middleton Memorial Veterans Hospital, Madison, Wisconsin, USA.
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21
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Yi D, Yu H, Lu K, Ruan C, Ding C, Tong L, Zhao X, Chen D. AMPK Signaling in Energy Control, Cartilage Biology, and Osteoarthritis. Front Cell Dev Biol 2021; 9:696602. [PMID: 34239878 PMCID: PMC8258395 DOI: 10.3389/fcell.2021.696602] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2021] [Accepted: 05/24/2021] [Indexed: 12/17/2022] Open
Abstract
The adenosine monophosphate (AMP)-activated protein kinase (AMPK) was initially identified as an enzyme acting as an "energy sensor" in maintaining energy homeostasis via serine/threonine phosphorylation when low cellular adenosine triphosphate (ATP) level was sensed. AMPK participates in catabolic and anabolic processes at the molecular and cellular levels and is involved in appetite-regulating circuit in the hypothalamus. AMPK signaling also modulates energy metabolism in organs such as adipose tissue, brain, muscle, and heart, which are highly dependent on energy consumption via adjusting the AMP/ADP:ATP ratio. In clinics, biguanides and thiazolidinediones are prescribed to patients with metabolic disorders through activating AMPK signaling and inhibiting complex I in the mitochondria, leading to a reduction in mitochondrial respiration and elevated ATP production. The role of AMPK in mediating skeletal development and related diseases remains obscure. In this review, in addition to discuss the emerging advances of AMPK studies in energy control, we will also illustrate current discoveries of AMPK in chondrocyte homeostasis, osteoarthritis (OA) development, and the signaling interaction of AMPK with other pathways, such as mTOR (mechanistic target of rapamycin), Wnt, and NF-κB (nuclear factor κB) under OA condition.
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Affiliation(s)
- Dan Yi
- Faculty of Pharmaceutical Sciences, Shenzhen, China
- Research Center for Human Tissues and Organs Degeneration, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
| | - Huan Yu
- Faculty of Pharmaceutical Sciences, Shenzhen, China
- Research Center for Human Tissues and Organs Degeneration, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
| | - Ke Lu
- Faculty of Pharmaceutical Sciences, Shenzhen, China
- Research Center for Human Tissues and Organs Degeneration, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
| | - Changshun Ruan
- Research Center for Human Tissues and Organs Degeneration, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
| | - Changhai Ding
- Clinical Research Centre, Zhujiang Hospital, Southern Medical University, Guangzhou, China
- Menzies Institute for Medical Research, University of Tasmania, Hobart, TAS, Australia
| | - Liping Tong
- Research Center for Human Tissues and Organs Degeneration, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
| | - Xiaoli Zhao
- Research Center for Human Tissues and Organs Degeneration, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
| | - Di Chen
- Faculty of Pharmaceutical Sciences, Shenzhen, China
- Research Center for Human Tissues and Organs Degeneration, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
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22
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Jiang W, Liu H, Wan R, Wu Y, Shi Z, Huang W. Mechanisms linking mitochondrial mechanotransduction and chondrocyte biology in the pathogenesis of osteoarthritis. Ageing Res Rev 2021; 67:101315. [PMID: 33684550 DOI: 10.1016/j.arr.2021.101315] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Revised: 02/12/2021] [Accepted: 03/01/2021] [Indexed: 12/11/2022]
Abstract
Mechanical loading is essential for chondrocyte health. Chondrocytes can sense and respond to various extracellular mechanical signals through an integrated set of mechanisms. Recently, it has been found that mitochondria, acting as critical mechanotransducers, are at the intersection between extracellular mechanical signals and chondrocyte biology. Much attention has been focused on identifying how mechanical loading-induced mitochondrial dysfunction contributes to the pathogenesis of osteoarthritis. In contrast, little is known regarding the mechanisms underlying functional alterations in mitochondria induced by mechanical stimulation. In this review, we describe how chondrocytes perceive environmental mechanical signals. We discuss how mechanical load induces mitochondrial functional alterations and highlight the major unanswered questions in this field. We speculate that AMP-activated protein kinase (AMPK), a master regulator of energy homeostasis, may play an important role in coupling force transmission to mitochondrial health and intracellular biological responses.
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Zheng L, Zhang Z, Sheng P, Mobasheri A. The role of metabolism in chondrocyte dysfunction and the progression of osteoarthritis. Ageing Res Rev 2021; 66:101249. [PMID: 33383189 DOI: 10.1016/j.arr.2020.101249] [Citation(s) in RCA: 268] [Impact Index Per Article: 89.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Revised: 12/16/2020] [Accepted: 12/21/2020] [Indexed: 02/07/2023]
Abstract
Osteoarthritis (OA) is a degenerative joint disease characterized by low-grade inflammation and high levels of clinical heterogeneity. Aberrant chondrocyte metabolism is a response to changes in the inflammatory microenvironment and may play a key role in cartilage degeneration and OA progression. Under conditions of environmental stress, chondrocytes tend to adapt their metabolism to microenvironmental changes by shifting from one metabolic pathway to another, for example from oxidative phosphorylation to glycolysis. Similar changes occur in other joint cells, including synoviocytes. Switching between these pathways is implicated in metabolic alterations that involve mitochondrial dysfunction, enhanced anaerobic glycolysis, and altered lipid and amino acid metabolism. The shift between oxidative phosphorylation and glycolysis is mainly regulated by the AMP-activated protein kinase (AMPK) and mechanistic target of rapamycin (mTOR) pathways. Chondrocyte metabolic changes are likely to be a feature of different OA phenotypes. Determining the role of chondrocyte metabolism in OA has revealed key features of disease pathogenesis. Future research should place greater emphasis on immunometabolism and altered metabolic pathways as a means to understand the pathophysiology of age-related OA. This knowledge will advance the development of new drugs against therapeutic targets of metabolic significance.
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Affiliation(s)
- Linli Zheng
- Department of Joint Surgery, the First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong 510080 China
| | - Ziji Zhang
- Department of Joint Surgery, the First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong 510080 China
| | - Puyi Sheng
- Department of Joint Surgery, the First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong 510080 China.
| | - Ali Mobasheri
- Department of Joint Surgery, the First Affiliated Hospital, Sun Yat-sen University, Guangzhou, Guangdong 510080 China; Research Unit of Medical Imaging, Physics and Technology, Faculty of Medicine, University of Oulu, PO Box 5000, FI-90014 Oulu, Finland; Department of Regenerative Medicine, State Research Institute Centre for Innovative Medicine, LT-08406, Vilnius, Lithuania; Departments of Orthopedics, Rheumatology and Clinical Immunology, University Medical Center Utrecht, 508 GA, Utrecht, The Netherlands.
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24
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Chen Y, Wu YY, Si HB, Lu YR, Shen B. Mechanistic insights into AMPK-SIRT3 positive feedback loop-mediated chondrocyte mitochondrial quality control in osteoarthritis pathogenesis. Pharmacol Res 2021; 166:105497. [PMID: 33609697 DOI: 10.1016/j.phrs.2021.105497] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Revised: 02/09/2021] [Accepted: 02/14/2021] [Indexed: 02/08/2023]
Abstract
Osteoarthritis (OA) is a major cause of disability in the elderly population and represents a significant public health problem and socioeconomic burden worldwide. However, no disease-modifying therapeutics are currently available for OA due to an insufficient understanding of the pathogenesis of this disability. As a unique cell type in cartilage, chondrocytes are essential for cartilage homeostasis and play a critical role in OA pathogenesis. Mitochondria are important metabolic centers in chondrocytes and contribute to cell survival, and mitochondrial quality control (MQC) is an emerging mechanism for maintaining cell homeostasis. An increasing number of recent studies have demonstrated that dysregulation of the key processes of chondrocyte MQC, which involve mitochondrial redox, biogenesis, dynamics, and mitophagy, is associated with OA pathogenesis and can be regulated by the chondroprotective molecules 5' adenosine monophosphate-activated protein kinase (AMPK) and sirtuin 3 (SIRT3). Moreover, AMPK and SIRT3 regulate each other, and their expression and activity are always consistent in chondrocytes, which suggests the existence of an AMPK-SIRT3 positive feedback loop (PFL). Although the precise mechanisms are not fully elucidated and need further validation, the current literature indicates that this AMPK-SIRT3 PFL regulates OA development and progression, at least partially by mediating chondrocyte MQC. Therefore, understanding the mechanisms of AMPK-SIRT3 PFL-mediated chondrocyte MQC in OA pathogenesis might yield new ideas and potential targets for subsequent research on the OA pathomechanism and therapeutics.
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Affiliation(s)
- Yang Chen
- Department of Orthopaedics, Key Laboratory of Transplant Engineering and Immunology, Regenerative Medicine Research Center, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Yong-Yao Wu
- West China College of Stomatology, Sichuan University, Chengdu 610041, China
| | - Hai-Bo Si
- Department of Orthopaedics, Key Laboratory of Transplant Engineering and Immunology, Regenerative Medicine Research Center, West China Hospital, Sichuan University, Chengdu 610041, China.
| | - Yan-Rong Lu
- Department of Orthopaedics, Key Laboratory of Transplant Engineering and Immunology, Regenerative Medicine Research Center, West China Hospital, Sichuan University, Chengdu 610041, China
| | - Bin Shen
- Department of Orthopaedics, Key Laboratory of Transplant Engineering and Immunology, Regenerative Medicine Research Center, West China Hospital, Sichuan University, Chengdu 610041, China
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25
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van den Bosch MHJ. Osteoarthritis year in review 2020: biology. Osteoarthritis Cartilage 2021; 29:143-150. [PMID: 33242602 DOI: 10.1016/j.joca.2020.10.006] [Citation(s) in RCA: 94] [Impact Index Per Article: 31.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Revised: 10/08/2020] [Accepted: 10/28/2020] [Indexed: 02/06/2023]
Abstract
This year in review about osteoarthritis biology highlights a selection of articles published between the 2019 and 2020 Osteoarthritis Research Society International (OARSI) World Congress meetings, within the field of osteoarthritis biology. Highlights were selected from PubMed searches covering osteoarthritis (OA) cartilage, subchondral bone, synovium and aging. Subsequently, a personal selection was based on new and emerging themes together with common research topics that were studied by multiple groups. Themes discussed include novel insights into the inflammatory changes during OA, with a number of noteworthy publications concerning the role of macrophages in healthy and osteoarthritic joints. Next, the application of mesenchymal stem cells as OA-dampening therapy is discussed, including possible ways to improve their efficacy by pre-treatment. Other significant themes including treatment of OA with metformin, enhancing autophagy to alleviate OA and the involvement of the gastro-intestinal microbiome in development of OA symptoms and structural damage are discussed. An effort was made to connect the seemingly distant topics from which the overarching conclusion can be drawn that over the last year promising breakthroughs have been achieved in further understanding the biology of OA development and that new therapeutic possibilities have been explored.
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Affiliation(s)
- M H J van den Bosch
- Experimental Rheumatology, Radboud university medical center Nijmegen, the Netherlands..
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26
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Xu L, Ma F, Huang J, Frankie Leung KL, Qin C, Lu WW, Guo XE, Tang B. Metformin Hydrochloride Encapsulation by Alginate Strontium Hydrogel for Cartilage Regeneration by Reliving Cellular Senescence. Biomacromolecules 2021; 22:671-680. [PMID: 33486954 DOI: 10.1021/acs.biomac.0c01488] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Cartilage lesion is a common tissue defect and is challenging in clinical practice. Trauma-induced cellular senescence could decrease the chondrocyte capability of maintaining cartilage tissue regeneration. A previous investigation showed that, by controlling the cellular senescence, the cartilage regeneration can be significantly accelerated. Based on this finding, we design a novel hydrogel, Alg/MH-Sr, that combines metformin, an established drug for inhibiting senescence, and strontium, an effective anti-inflammatory material for cartilage tissue engineering. A RT-PCR test suggests the significant inhibitory effect of the hydrogel on senescent, apoptotic, oxidative, and inflammatory genes' expression. Histological examinations demonstrate that the Alg/MH-Sr hydrogel accelerated cartilage repairment, and chondrocyte senescence was significantly inhibited. Our study demonstrates that the Alg/MH-Sr hydrogel is effective for cartilage defect treatment and provides a new clue in accelerating tissue repairment by inhibiting the senescence of cells and tissues.
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Affiliation(s)
- Lei Xu
- Department of Biomedical Engineering, Southern University of Science and Technology, Shenzhen 518055, Guangdong, People's Republic of China.,Department of Orthopeadics and Traumatology, LKS Faculty of Medicine, the University of Hong Kong, Hong Kong 999077, SAR, People's Republic of China.,Bone Bioengineering Laboratory, Department of Biomedical Engineering, Columbia University, New York, 10027 New York, United States.,Department of Orthopeadics and Traumatology, Guangdong Second Provincial General Hospital, Guangzhou 510317, Guang Dong, People's Republic of China
| | - Fenbo Ma
- Department of Biomedical Engineering, Southern University of Science and Technology, Shenzhen 518055, Guangdong, People's Republic of China
| | - Jun Huang
- Department of Biomedical Engineering, Southern University of Science and Technology, Shenzhen 518055, Guangdong, People's Republic of China
| | - Ka Li Frankie Leung
- Department of Orthopeadics and Traumatology, LKS Faculty of Medicine, the University of Hong Kong, Hong Kong 999077, SAR, People's Republic of China
| | - Chenghe Qin
- Department of Orthopeadics and Traumatology, Guangdong Second Provincial General Hospital, Guangzhou 510317, Guang Dong, People's Republic of China
| | - William Weijia Lu
- Department of Orthopeadics and Traumatology, LKS Faculty of Medicine, the University of Hong Kong, Hong Kong 999077, SAR, People's Republic of China
| | - X Edward Guo
- Bone Bioengineering Laboratory, Department of Biomedical Engineering, Columbia University, New York, 10027 New York, United States
| | - Bin Tang
- Department of Biomedical Engineering, Southern University of Science and Technology, Shenzhen 518055, Guangdong, People's Republic of China.,Guangdong Provincial Key Laboratory of Cell Microenvironment and Disease Research, SUSTech, Schenzhen, Guangdong, People's Republic of China.,Shenzhen Key Laboratory of Cell Microenvironment, SUSTech, Schenzhen, Guangdong, People's Republic of China
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27
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Friedman B, Corciulo C, Castro CM, Cronstein BN. Adenosine A2A receptor signaling promotes FoxO associated autophagy in chondrocytes. Sci Rep 2021; 11:968. [PMID: 33441836 PMCID: PMC7806643 DOI: 10.1038/s41598-020-80244-x] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Accepted: 12/11/2020] [Indexed: 01/05/2023] Open
Abstract
Autophagy, a homeostatic pathway upregulated during cellular stress, is decreased in osteoarthritic chondrocytes and this reduction in autophagy is thought to contribute to the development and progression of osteoarthritis (OA). The adenosine A2A receptor (A2AR) is a potent anti-inflammatory receptor and deficiency of this receptor leads to the development of OA in mice. Moreover, treatment using liposomally conjugated adenosine or a specific A2AR agonist improved joint scores significantly in both rats with post-traumatic OA (PTOA) and mice subjected to a high fat diet obesity induced OA. Importantly, A2AR ligation is beneficial for mitochondrial health and metabolism in vitro in primary and the TC28a2 human cell line. An additional set of metabolic, stress-responsive, and homeostatic mediators include the Forkhead box O transcription factors (FoxOs). Data has shown that mouse FoxO knockouts develop early OA with reduced cartilage autophagy, indicating that FoxO-induced homeostasis is important for articular cartilage. Given the apparent similarities between A2AR and FoxO signaling, we tested the hypothesis that A2AR stimulation improves cartilage function through activation of the FoxO proteins leading to increased autophagy in chondrocytes. We analyzed the signaling pathway in the human TC28a2 cell line and corroborated these findings in vivo in a metabolically relevant obesity-induced OA mouse model. We found that A2AR stimulation increases activation and nuclear localization of FoxO1 and FoxO3, promotes an increase in autophagic flux, improves metabolic function in chondrocytes, and reduces markers of apoptosis in vitro and reduced apoptosis by TUNEL assay in vivo. A2AR ligation additionally enhances in vivo activation of FoxO1 and FoxO3 with evidence of enhanced autophagic flux upon injection of the liposome-associated A2AR agonist in a mouse obesity-induced OA model. These findings offer further evidence that A2AR may be an excellent target for promoting chondrocyte and cartilage homeostasis.
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Affiliation(s)
- Benjamin Friedman
- Department of Medicine, Division of Rheumatology, NYU School of Medicine, 550 First Avenue, New York, NY, 10016, USA
- Department of Medicine, Division of Translational Medicine, NYU School of Medicine, 550 First Avenue, New York, NY, 10016, USA
| | - Carmen Corciulo
- Department of Medicine, Division of Translational Medicine, NYU School of Medicine, 550 First Avenue, New York, NY, 10016, USA
| | - Cristina M Castro
- Department of Medicine, Division of Translational Medicine, NYU School of Medicine, 550 First Avenue, New York, NY, 10016, USA
| | - Bruce N Cronstein
- Department of Medicine, Division of Rheumatology, NYU School of Medicine, 550 First Avenue, New York, NY, 10016, USA.
- Department of Medicine, Division of Translational Medicine, NYU School of Medicine, 550 First Avenue, New York, NY, 10016, USA.
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28
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Wang J, Li J, Song D, Ni J, Ding M, Huang J, Yan M. AMPK: implications in osteoarthritis and therapeutic targets. Am J Transl Res 2020; 12:7670-7681. [PMID: 33437352 PMCID: PMC7791500] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2020] [Accepted: 10/24/2020] [Indexed: 06/12/2023]
Abstract
Osteoarthritis (OA) is the most common skeletal disease and the leading cause of pain and disability in the aged population (>65 years). However, the underlying factors involved in OA pathogenesis remain elusive which has resulted in failure to identify disease-modifying OA drugs. Altered metabolism has been shown to be a prominent pathological change in OA. As a critical bioenergy sensor, AMP-activated protein kinase (AMPK) mediates not only energy homeostasis but also redox balance in chondrocytes to counter various cell stress. Dysfunction of AMPK activity has been associated with reduced autophagy, impaired mitochondrial function, excessive reactive oxygen species generation, and inflammation in joint tissue. These abnormalities ultimately trigger articular cartilage degeneration, synovial inflammation, and abnormal subchondral bone remodeling. This review focuses on recent findings describing the central role of AMPK in joint homeostasis and OA development. We also highlight current advances that target AMPK as a novel therapeutic strategy for OA prevention.
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Affiliation(s)
- Junjie Wang
- Department of Orthopaedic Surgery, The Second Xiangya Hospital of Central South UniversityChangsha 410011, Hunan, China
| | - Jiali Li
- Department of Rheumatology and Nephrology, University of South China Affiliated Changsha Central HospitalChangsha 410008, Hunan, China
| | - Deye Song
- Department of Orthopaedic Surgery, The Second Xiangya Hospital of Central South UniversityChangsha 410011, Hunan, China
| | - Jiangdong Ni
- Department of Orthopaedic Surgery, The Second Xiangya Hospital of Central South UniversityChangsha 410011, Hunan, China
| | - Muliang Ding
- Department of Orthopaedic Surgery, The Second Xiangya Hospital of Central South UniversityChangsha 410011, Hunan, China
| | - Jun Huang
- Department of Orthopaedic Surgery, The Second Xiangya Hospital of Central South UniversityChangsha 410011, Hunan, China
| | - Mingming Yan
- Department of Orthopaedic Surgery, The Second Xiangya Hospital of Central South UniversityChangsha 410011, Hunan, China
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29
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He Y, Makarczyk MJ, Lin H. Role of mitochondria in mediating chondrocyte response to mechanical stimuli. Life Sci 2020; 263:118602. [PMID: 33086121 PMCID: PMC7736591 DOI: 10.1016/j.lfs.2020.118602] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 09/22/2020] [Accepted: 10/11/2020] [Indexed: 12/21/2022]
Abstract
As the most common form of arthritis, osteoarthritis (OA) has become a major cause of severe joint pain, physical disability, and quality of life impairment in the affected population. To date, precise pathogenesis of OA has not been fully clarified, which leads to significant obstacles in developing efficacious treatments such as failures in finding disease-modifying OA drugs (DMOADs) in the last decades. Given that diarthrodial joints primarily display the weight-bearing and movement-supporting function, it is not surprising that mechanical stress represents one of the major risk factors for OA. However, the inner connection between mechanical stress and OA onset/progression has yet to be explored. Mitochondrion, a widespread organelle involved in complex biological regulation processes such as adenosine triphosphate (ATP) synthesis and cellular metabolism, is believed to have a controlling role in the survival and function implement of chondrocytes, the singular cell type within cartilage. Mitochondrial dysfunction has also been observed in osteoarthritic chondrocytes. In this review, we systemically summarize mitochondrial alterations in chondrocytes during OA progression and discuss our recent progress in understanding the potential role of mitochondria in mediating mechanical stress-associated osteoarthritic alterations of chondrocytes. In particular, we propose the potential signaling pathways that may regulate this process, which provide new views and therapeutic targets for the prevention and treatment of mechanical stress-associated OA.
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Affiliation(s)
- Yuchen He
- Department of Orthopaedic Surgery, University of Pittsburgh, Pittsburgh, PA, United States of America
| | - Meagan J Makarczyk
- Department of Orthopaedic Surgery, University of Pittsburgh, Pittsburgh, PA, United States of America; Department of Bioengineering, University of Pittsburgh, Pittsburgh, PA, United States of America
| | - Hang Lin
- Department of Orthopaedic Surgery, University of Pittsburgh, Pittsburgh, PA, United States of America; Department of Bioengineering, University of Pittsburgh, Pittsburgh, PA, United States of America; McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA, United States of America.
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30
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Fan KJ, Wu J, Wang QS, Xu BX, Zhao FT, Wang TY. Metformin inhibits inflammation and bone destruction in collagen-induced arthritis in rats. ANNALS OF TRANSLATIONAL MEDICINE 2020; 8:1565. [PMID: 33437764 PMCID: PMC7791269 DOI: 10.21037/atm-20-3042] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Background Metformin (MF) is a widely used biguanide oral hypoglycemic agent, which has obvious anti-inflammatory and immunomodulatory effects. However, the mechanism of MF on rheumatoid arthritis (RA) remains uncertain. In this study, we investigated the therapeutic effects of MF on collagen-induced arthritis (CIA). Methods CIA was induced in rats by intradermal injection of a mixture of bovine type II collagen and incomplete Freund's adjuvant (IFA) on day 0 and day 7 through the base of the tail. Intraperitoneal injection of MF (100 mg/kg) was given every 3 days, from day 14 for 3 weeks. The effects of MF on arthritis-induced systemic inflammation and synovitis were studied by pathological analysis of the knee joint and serological examination of peripheral blood in CIA rats. The bone protection effect of MF was studied by microscopic computed tomography (micro-CT) and histological analysis of the knee joint. The effects of MF on chondrocytes in CIA rats were studied by detecting the relevant pro-apoptotic mediators in the chondrocytes. Results After administration of MF in CIA rats, systemic inflammation and synovitis caused by arthritis were significantly suppressed. Histomorphometry and micro-CT analysis of the knee joint revealed that MF can protect bone by inhibiting the changes of trabecular bone in CIA rats. Histological analysis of the knee joint found that MF can inhibit osteoclast formation and degradation of the cartilage layer matrix. Detection of the relevant pro-apoptotic mediators in chondrocytes revealed that MF can significantly inhibit the apoptosis of chondrocytes in CIA rats. Conclusions Our study showed that MF can inhibit systemic inflammation and synovitis and plays a role in bone protection by inhibiting cartilage layer matrix degradation, osteoclast formation, and chondrocyte apoptosis.
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Affiliation(s)
- Kai-Jian Fan
- Department of Pharmacy, Shanghai Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Jing Wu
- Department of Pharmacy, Shanghai Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Qi-Shan Wang
- Department of Pharmacy, Shanghai Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Bing-Xin Xu
- Department of Pharmacy, Shanghai Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Fu-Tao Zhao
- Department of Rheumatology, Shanghai Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Ting-Yu Wang
- Department of Pharmacy, Shanghai Ninth People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
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31
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Mao X, Fu P, Wang L, Xiang C. Mitochondria: Potential Targets for Osteoarthritis. Front Med (Lausanne) 2020; 7:581402. [PMID: 33324661 PMCID: PMC7726420 DOI: 10.3389/fmed.2020.581402] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Accepted: 10/19/2020] [Indexed: 12/12/2022] Open
Abstract
Osteoarthritis (OA) is a common and disabling joint disorder that is mainly characterized by cartilage degeneration and narrow joint spaces. The role of mitochondrial dysfunction in promoting the development of OA has gained much attention. Targeting endogenous molecules to improve mitochondrial function is a potential treatment for OA. Moreover, research on exogenous drugs to improve mitochondrial function in OA based on endogenous molecular targets has been accomplished. In addition, stem cells and exosomes have been deeply researched in the context of cartilage regeneration, and these factors both reverse mitochondrial dysfunctions. Thus, we hypothesize that biomedical approaches will be applied to the treatment of OA. Furthermore, we have summarized the global status of mitochondria and osteoarthritis research in the past two decades, which will contribute to the research field and the development of novel treatment strategies for OA.
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Affiliation(s)
- Xingjia Mao
- Department of Orthopedic, The Second Hospital of Shanxi Medical University, Taiyuan, China
| | - Panfeng Fu
- Department of Respiratory and Critical Care, The Affiliated Hospital of Medical School of Ningbo University, Ningbo, China
| | - Linlin Wang
- Department of Basic Medicine Sciences, The School of Medicine of Zhejiang University, Hangzhou, China
| | - Chuan Xiang
- Department of Orthopedic, The Second Hospital of Shanxi Medical University, Taiyuan, China
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32
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Serum fatty acid chain length associates with prevalent symptomatic end-stage osteoarthritis, independent of BMI. Sci Rep 2020; 10:15459. [PMID: 32963331 PMCID: PMC7508826 DOI: 10.1038/s41598-020-71811-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Accepted: 08/20/2020] [Indexed: 12/20/2022] Open
Abstract
Higher body mass index (BMI) is associated with osteoarthritis (OA) in both weight-bearing and non-weight-bearing joints, suggesting a link between OA and poor metabolic health beyond mechanical loading. This risk may be influenced by systemic factors accompanying BMI. Fluctuations in concentrations of metabolites may mark or even contribute to development of OA. This study explores the association of metabolites with radiographic knee/hip OA prevalence and progression. A 1H-NMR-metabolomics assay was performed on plasma samples of 1564 cases for prevalent OA and 2,125 controls collected from the Rotterdam Study, CHECK, GARP/NORREF and LUMC-arthroplasty cohorts. OA prevalence and 5 to 10 year progression was assessed by means of Kellgren-Lawrence (KL) score and the OARSI-atlas. End-stage knee/hip OA (TJA) was defined as indication for arthroplasty surgery. Controls did not have OA at baseline or follow-up. Principal component analysis of 227 metabolites demonstrated 23 factors, of which 19 remained interpretable after quality-control. Associations of factor scores with OA definitions were investigated with logistic regression. Fatty acids chain length (FALen), which was included in two factors which associated with TJA, was individually associated with both overall OA as well as TJA. Increased Fatty Acid chain Length is associated with OA.
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Salvatore T, Pafundi PC, Galiero R, Gjeloshi K, Masini F, Acierno C, Di Martino A, Albanese G, Alfano M, Rinaldi L, Sasso FC. Metformin: A Potential Therapeutic Tool for Rheumatologists. Pharmaceuticals (Basel) 2020; 13:ph13090234. [PMID: 32899806 PMCID: PMC7560003 DOI: 10.3390/ph13090234] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Revised: 08/31/2020] [Accepted: 09/02/2020] [Indexed: 12/18/2022] Open
Abstract
Metformin is an oral antihyperglycemic drug widely used to treat type 2 diabetes, acting via indirect activation of 5′ Adenosine Monophosphate-activated Protein Kinase (AMPK). Actually, evidence has accumulated of an intriguing anti-inflammatory activity, mainly mediated by AMPK through a variety of mechanisms such as the inhibition of cytokine-stimulated Nuclear Factor-κB (NF-κB) and the downregulation of the Janus Kinase/Signal Transducer and Activator of Transcription (JAK/STAT) signaling pathways. Moreover, AMPK plays an important role in the modulation of T lymphocytes and other pivotal cells of the innate immune system. The current understanding of these AMPK effects provides a strong rationale for metformin repurposing in the management of autoimmune and inflammatory conditions. Several studies demonstrated metformin’s beneficial effects on both animal and human rheumatologic diseases, especially on rheumatoid arthritis. Unfortunately, even though data are large and remarkable, they almost exclusively come from experimental investigations with only a few from clinical trials. The lack of support from prospective placebo-controlled trials does not allow metformin to enter the therapeutic repertoire of rheumatologists. However, a large proportion of rheumatologic patients can currently benefit from metformin, such as those with concomitant obesity and type 2 diabetes, two conditions strongly associated with rheumatoid arthritis, osteoarthritis, and gout, as well as those with diabetes secondary to steroid therapy.
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Affiliation(s)
- Teresa Salvatore
- Department of Precision Medicine, University of Campania “Luigi Vanvitelli”, Via de Crecchio, 7, I-80138 Naples, Italy;
| | - Pia Clara Pafundi
- Department of Advanced Medical and Surgical Sciences, University of Campania “Luigi Vanvitelli”, Piazza L. Miraglia, 2, I-80138 Naples, Italy; (P.C.P.); (R.G.); (K.G.); (F.M.); (C.A.); (A.D.M.); (G.A.); (M.A.); (L.R.)
| | - Raffaele Galiero
- Department of Advanced Medical and Surgical Sciences, University of Campania “Luigi Vanvitelli”, Piazza L. Miraglia, 2, I-80138 Naples, Italy; (P.C.P.); (R.G.); (K.G.); (F.M.); (C.A.); (A.D.M.); (G.A.); (M.A.); (L.R.)
| | - Klodian Gjeloshi
- Department of Advanced Medical and Surgical Sciences, University of Campania “Luigi Vanvitelli”, Piazza L. Miraglia, 2, I-80138 Naples, Italy; (P.C.P.); (R.G.); (K.G.); (F.M.); (C.A.); (A.D.M.); (G.A.); (M.A.); (L.R.)
| | - Francesco Masini
- Department of Advanced Medical and Surgical Sciences, University of Campania “Luigi Vanvitelli”, Piazza L. Miraglia, 2, I-80138 Naples, Italy; (P.C.P.); (R.G.); (K.G.); (F.M.); (C.A.); (A.D.M.); (G.A.); (M.A.); (L.R.)
| | - Carlo Acierno
- Department of Advanced Medical and Surgical Sciences, University of Campania “Luigi Vanvitelli”, Piazza L. Miraglia, 2, I-80138 Naples, Italy; (P.C.P.); (R.G.); (K.G.); (F.M.); (C.A.); (A.D.M.); (G.A.); (M.A.); (L.R.)
| | - Anna Di Martino
- Department of Advanced Medical and Surgical Sciences, University of Campania “Luigi Vanvitelli”, Piazza L. Miraglia, 2, I-80138 Naples, Italy; (P.C.P.); (R.G.); (K.G.); (F.M.); (C.A.); (A.D.M.); (G.A.); (M.A.); (L.R.)
| | - Gaetana Albanese
- Department of Advanced Medical and Surgical Sciences, University of Campania “Luigi Vanvitelli”, Piazza L. Miraglia, 2, I-80138 Naples, Italy; (P.C.P.); (R.G.); (K.G.); (F.M.); (C.A.); (A.D.M.); (G.A.); (M.A.); (L.R.)
| | - Maria Alfano
- Department of Advanced Medical and Surgical Sciences, University of Campania “Luigi Vanvitelli”, Piazza L. Miraglia, 2, I-80138 Naples, Italy; (P.C.P.); (R.G.); (K.G.); (F.M.); (C.A.); (A.D.M.); (G.A.); (M.A.); (L.R.)
| | - Luca Rinaldi
- Department of Advanced Medical and Surgical Sciences, University of Campania “Luigi Vanvitelli”, Piazza L. Miraglia, 2, I-80138 Naples, Italy; (P.C.P.); (R.G.); (K.G.); (F.M.); (C.A.); (A.D.M.); (G.A.); (M.A.); (L.R.)
| | - Ferdinando Carlo Sasso
- Department of Advanced Medical and Surgical Sciences, University of Campania “Luigi Vanvitelli”, Piazza L. Miraglia, 2, I-80138 Naples, Italy; (P.C.P.); (R.G.); (K.G.); (F.M.); (C.A.); (A.D.M.); (G.A.); (M.A.); (L.R.)
- Correspondence: ; Tel.: +39-081-566-5010
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Wong SK, Chin KY, Ima-Nirwana S. Berberine and musculoskeletal disorders: The therapeutic potential and underlying molecular mechanisms. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2020; 73:152892. [PMID: 30902523 DOI: 10.1016/j.phymed.2019.152892] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2018] [Revised: 03/09/2019] [Accepted: 03/12/2019] [Indexed: 06/09/2023]
Abstract
BACKGROUND Musculoskeletal disorders are a group of disorders that affect the joints, bones, and muscles, causing long-term disability. Berberine, an isoquinoline alkaloid, has been previously established to exhibit beneficial properties in preventing various diseases, including musculoskeletal disorders. PURPOSE This review article aims to recapitulate the therapeutic potential of berberine and its mechanism of action in treating musculoskeletal disorders. METHODS A wide range of literature illustrating the effects of berberine in ameliorating musculoskeletal disorders was retrieved from online electronic databases (PubMed and Medline) and reviewed. RESULTS Berberine may potentially retard the progression of osteoporosis, osteoarthritis and rheumatoid arthritis. Limited studies reported the effects of berberine in suppressing the proliferation of osteosarcoma cells. These beneficial properties of berberine are mediated in part through its ability to target multiple signaling pathways, including PKA, p38 MAPK, Wnt/β-catenin, AMPK, RANK/RANKL/OPG, PI3K/Akt, NFAT, NF-κB, Hedgehog, and oxidative stress signaling. In addition, berberine exhibited anti-apoptotic, anti-inflammatory, and immunosuppressive properties. CONCLUSION The current evidence indicates that berberine may be effective in preventing musculoskeletal disorders. However, findings from in vitro and in vivo investigations await further validation from human clinical trial.
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Affiliation(s)
- Sok Kuan Wong
- Department of Pharmacology, Faculty of Medicine, Universiti Kebangsaan Malaysia, Jalan Yaacob Latif, Bandar Tun Razak, Cheras, 56000 Kuala Lumpur, Malaysia
| | - Kok-Yong Chin
- Department of Pharmacology, Faculty of Medicine, Universiti Kebangsaan Malaysia, Jalan Yaacob Latif, Bandar Tun Razak, Cheras, 56000 Kuala Lumpur, Malaysia
| | - Soelaiman Ima-Nirwana
- Department of Pharmacology, Faculty of Medicine, Universiti Kebangsaan Malaysia, Jalan Yaacob Latif, Bandar Tun Razak, Cheras, 56000 Kuala Lumpur, Malaysia.
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Li J, Zhang B, Liu WX, Lu K, Pan H, Wang T, Oh CD, Yi D, Huang J, Zhao L, Ning G, Xing C, Xiao G, Liu-Bryan R, Feng S, Chen D. Metformin limits osteoarthritis development and progression through activation of AMPK signalling. Ann Rheum Dis 2020; 79:635-645. [PMID: 32156705 PMCID: PMC7213329 DOI: 10.1136/annrheumdis-2019-216713] [Citation(s) in RCA: 132] [Impact Index Per Article: 33.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Revised: 02/13/2020] [Accepted: 02/24/2020] [Indexed: 01/03/2023]
Abstract
Objectives In this study, we aim to determine the effect of metformin on osteoarthritis (OA) development and progression. Methods Destabilisation of the medial meniscus (DMM) surgery was performed in 10-week-old wild type and AMP-activated protein kinase (AMPK)α1 knockout (KO) mice. Metformin (4 mg/day in drinking water) was given, commencing either 2 weeks before or 2 weeks after DMM surgery. Mice were sacrificed 6 and 12 weeks after DMM surgery. OA phenotype was analysed by micro-computerised tomography (μCT), histology and pain-related behaviour tests. AMPKα1 (catalytic alpha subunit of AMPK) expression was examined by immunohistochemistry and immunofluorescence analyses. The OA phenotype was also determined by μCT and MRI in non-human primates. Results Metformin upregulated phosphorylated and total AMPK expression in articular cartilage tissue. Mild and more severe cartilage degeneration was observed at 6 and 12 weeks after DMM surgery, evidenced by markedly increased Osteoarthritis Research Society International scores, as well as reduced cartilage areas. The administration of metformin, commencing either before or after DMM surgery, caused significant reduction in cartilage degradation. Prominent synovial hyperplasia and osteophyte formation were observed at both 6 and 12 weeks after DMM surgery; these were significantly inhibited by treatment with metformin either before or after DMM surgery. The protective effects of metformin on OA development were not observed in AMPKα1 KO mice, suggesting that the chondroprotective effect of metformin is mediated by AMPK signalling. In addition, we demonstrated that treatment with metformin could also protect from OA progression in a partial medial meniscectomy animal model in non-human primates. Conclusions The present study suggests that metformin, administered shortly after joint injury, can limit OA development and progression in injury-induced OA animal models.
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Affiliation(s)
- Jun Li
- Department of Orthopedic Surgery, Rush University Medical Center, Chicago, Illinois, USA
| | - Bin Zhang
- Department of Orthopedics, Tianjin Medical University General Hospital, Tianjin, China
| | - Wei-Xiao Liu
- Department of Orthopedics, Tianjin Medical University General Hospital, Tianjin, China
| | - Ke Lu
- Research Center for Human Tissues and Organs Degeneration, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
| | - Haobo Pan
- Research Center for Human Tissues and Organs Degeneration, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
| | - Tingyu Wang
- Department of Pharmacy, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Chun-do Oh
- Department of Orthopedic Surgery, Rush University Medical Center, Chicago, Illinois, USA
| | - Dan Yi
- Department of Orthopedic Surgery, Rush University Medical Center, Chicago, Illinois, USA
| | - Jian Huang
- Department of Orthopedic Surgery, Rush University Medical Center, Chicago, Illinois, USA
| | - Lan Zhao
- Department of Orthopedic Surgery, Rush University Medical Center, Chicago, Illinois, USA
| | - Guangzhi Ning
- Department of Orthopedics, Tianjin Medical University General Hospital, Tianjin, China
| | - Cong Xing
- Department of Orthopedics, Tianjin Medical University General Hospital, Tianjin, China
| | - Guozhi Xiao
- School of Medicine, Southern University of Science and Technology, Shenzhen, China
| | - Ru Liu-Bryan
- Division of Rheumatology, Allergy and Immunology, San Diego VA Healthcare System, San Diego, California, USA
| | - Shiqing Feng
- Department of Orthopedics, Tianjin Medical University General Hospital, Tianjin, China
| | - Di Chen
- Department of Orthopedic Surgery, Rush University Medical Center, Chicago, Illinois, USA .,Research Center for Human Tissues and Organs Degeneration, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
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Li H, Ding X, Terkeltaub R, Lin H, Zhang Y, Zhou B, He K, Li K, Liu Z, Wei J, Yang Y, Xie H, Zeng C, Lei G. Exploration of metformin as novel therapy for osteoarthritis: preventing cartilage degeneration and reducing pain behavior. Arthritis Res Ther 2020; 22:34. [PMID: 32087740 PMCID: PMC7036179 DOI: 10.1186/s13075-020-2129-y] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2019] [Accepted: 02/12/2020] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND Metformin could activate adenosine monophosphate-activated protein kinase (AMPK) which was postulated as a potential therapeutic target for osteoarthritis. This study aimed to examine the effects of metformin on cartilage and pain in osteoarthritis mouse model. METHODS Eighty 10-week-old male C57BL/6 mice were randomized to 6 groups: non-operation, sham-operation, destabilization of the medial meniscus (DMM)-operation with intragastric saline/metformin, and DMM-operation with intraarticular saline/metformin. Articular cartilage degeneration was examined by scanning electron microscopy (SEM) and graded using the scoring system recommended by Osteoarthritis Research Society International (OARSI). Mechanical withdrawal threshold and hind paw weight distribution were measured to assess the pain-related behavior. Cell Counting Kit-8 assay, quantificational real-time polymerase chain reaction, and western blot analysis were conducted to examine the anabolic and anti-catabolic effect of metformin and the role of AMPK in mediating its effects on interleukin-1β stimulated primary mice chondrocytes. RESULTS Compared with mice receiving intragastric and intraarticular saline, mice in both intragastric and intraarticular metformin displayed attenuated articular cartilage degeneration, indicated by less cartilage damage under SEM and significantly lower OARSI scores. A higher paw withdrawal threshold and a decreased weight-bearing asymmetry were observed in the intragastric and intraarticular metformin mice compared with their corresponding saline groups in DMM model of osteoarthritis. In vitro experiments showed that metformin not only decreased the level of matrix metalloproteinase 13, but also elevated type II collagen production through activating AMPK pathway. CONCLUSIONS Metformin attenuates osteoarthritis structural worsening and modulates pain, suggesting its potential for osteoarthritis prevention or treatment.
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Affiliation(s)
- Hui Li
- Department of Orthopaedics, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, Hunan, China
| | - Xiang Ding
- Department of Orthopaedics, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, Hunan, China
| | - Robert Terkeltaub
- Department of Medicine, University of California at San Diego, San Diego, USA.,VA San Diego Medical Center, San Diego, USA
| | - Hang Lin
- Center for Cellular and Molecular Engineering, Department of Orthopaedic Surgery, University of Pittsburgh School of Medicine, Pittsburgh, USA
| | - Yuqing Zhang
- Division of Rheumatology, Allergy, and Immunology, Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, USA.,The Mongan Institute, Massachusetts General Hospital, Harvard Medical School, Boston, USA
| | - Bin Zhou
- Hunan Key Laboratory of Joint Degeneration and Injury, Changsha, China
| | - Ke He
- Hunan Key Laboratory of Joint Degeneration and Injury, Changsha, China
| | - Kun Li
- Department of Orthopaedics, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, Hunan, China
| | - Zhichen Liu
- Department of Orthopaedics, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, Hunan, China
| | - Jie Wei
- Division of Rheumatology, Allergy, and Immunology, Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, USA.,The Mongan Institute, Massachusetts General Hospital, Harvard Medical School, Boston, USA
| | - Yuanheng Yang
- Department of Plastic and Cosmetic Surgery, Xiangya Hospital, Central South University, Changsha, China
| | - Hui Xie
- Department of Orthopaedics, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, Hunan, China.,Hunan Key Laboratory of Joint Degeneration and Injury, Changsha, China.,Movement System Injury and Repair Research Center, Xiangya Hospital, Central South University, Changsha, China.,Hunan Engineering Research Center of Osteoarthritis, Changsha, China.,National Clinical Research Center of Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
| | - Chao Zeng
- Department of Orthopaedics, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, Hunan, China. .,Division of Rheumatology, Allergy, and Immunology, Department of Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, USA. .,The Mongan Institute, Massachusetts General Hospital, Harvard Medical School, Boston, USA.
| | - Guanghua Lei
- Department of Orthopaedics, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha, 410008, Hunan, China. .,Hunan Key Laboratory of Joint Degeneration and Injury, Changsha, China. .,Hunan Engineering Research Center of Osteoarthritis, Changsha, China. .,National Clinical Research Center of Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China.
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Metformin attenuates cartilage degeneration in an experimental osteoarthritis model by regulating AMPK/mTOR. Aging (Albany NY) 2020; 12:1087-1103. [PMID: 31945013 PMCID: PMC7053618 DOI: 10.18632/aging.102635] [Citation(s) in RCA: 59] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2019] [Accepted: 12/23/2019] [Indexed: 12/25/2022]
Abstract
Background: It is generally thought that the occurrence and progression of osteoarthritis (OA) results from multiple causes, including degradation and destruction of the cartilage matrix and aging of chondrocytes. Metformin is a first-line drug for the treatment of diabetes, and has great potential for the treatment of other disorders. However, the role of metformin in OA is unknown. Results: Metformin displayed a protective effect against OA. There were lower OARSI scores and fewer MMP-13-positive cells in DMM mice and cartilage explants after treatment with metformin. In addition, metformin treatment decreased p16INK4a levels in OA chondrocytes, and enhanced polarization of AMPK and inhibition of mTORC1 in OA mice and chondrocytes in a dose-dependent manner. Conclusions: Metformin effectively alleviated cartilage degradation and aging through regulation of the AMPK/mTOR signaling pathways, suggesting that it could be an effective treatment for OA. Methods: The effects of metformin on cartilage degradation and chondrocyte aging was determined in a destabilization of the medial meniscus (DMM)-induced OA mouse model and in IL-1β-treated mouse chondrocytes and cartilage explants. Articular cartilage degeneration was graded using the Osteoarthritis Research Society International (OARSI) criteria. Immunostaining, RT-PCR, and western blot analyses were conducted to detect the relative expressions of protein and RNA.
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Ge Y, Zhou S, Li Y, Wang Z, Chen S, Xia T, Shen J, Teng H, Jiang Q. Estrogen prevents articular cartilage destruction in a mouse model of AMPK deficiency via ERK-mTOR pathway. ANNALS OF TRANSLATIONAL MEDICINE 2019; 7:336. [PMID: 31475206 DOI: 10.21037/atm.2019.06.77] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Background To investigate the mechanism underlying the chondroprotective effect of estrogen in AMP-activated protein kinase (AMPK) deficiency mice. Methods Female cartilage-specific AMPKα double knockout (AMPKα cDKO) mice were generated and subjected to ovariectomy (OVX). The model of osteoarthritis (OA) was induced by destabilization of medial meniscus (DMM). Histopathological changes were evaluated by using OARSI scoring systems. Autophagy changes were analyzed by immunofluorescence staining. Human chondrocytes were subjected to mechanical stress to mimic OA development. and incubated in presence of or absence of 17β-estradiol or/and compound C (AMPK inhibitor) or/and U0126 (ERK inhibitor). The expression levels of ERK1/2 phosphorylation, p70S6K phosphorylation and light chain 3 (LC3) were detected by Western blot. Results Compared with in OVX-sham AMPKα cDKO and OVX-sham WT mice, DMM-induced OA is more severe, and significantly low level of LC3 was observed in articular cartilage in OVX AMPK cDKO mice. Both mechanical stress and compound C were shown to induce an increase in phosphorylation of p70S6K, respectively. 17β-estradiol stimulation led to a reduction in the basal level of p70S6K phosphorylation as well as in the compound C or mechanical stress-induced level of p70S6K phosphorylation. 17β-estradiol stimulation not only led to an increase in LC3 conversion but also overrode the inhibitory effect of compound C on LC3 conversion. The effects of 17β-estradiol were abrogated by blocking ERK signaling pathway. Conclusions Our findings suggest that estrogen can protect articular cartilage from damage during OA development by promoting chondrocyte autophagy via ERK-mammalian target of rapamycin (mTOR) signaling, and give new insight into the mechanism of the chondroprotective effect of estrogen.
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Affiliation(s)
- Yuxiang Ge
- Department of Sports Medicine and Adult Reconstructive Surgery, Drum Tower Hospital, School of Medicine, Nanjing University, Nanjing 210008, China.,Laboratory for Bone and Joint Disease, Model Animal Research Center (MARC), Nanjing University, Nanjing 210093, China
| | - Sheng Zhou
- Department of Sports Medicine and Adult Reconstructive Surgery, Drum Tower Hospital, School of Medicine, Nanjing University, Nanjing 210008, China.,Laboratory for Bone and Joint Disease, Model Animal Research Center (MARC), Nanjing University, Nanjing 210093, China
| | - Yixuan Li
- Department of Sports Medicine and Adult Reconstructive Surgery, Drum Tower Hospital, School of Medicine, Nanjing University, Nanjing 210008, China.,Laboratory for Bone and Joint Disease, Model Animal Research Center (MARC), Nanjing University, Nanjing 210093, China
| | - Zixu Wang
- Department of Sports Medicine and Adult Reconstructive Surgery, Drum Tower Hospital, School of Medicine, Nanjing University, Nanjing 210008, China.,Laboratory for Bone and Joint Disease, Model Animal Research Center (MARC), Nanjing University, Nanjing 210093, China
| | - Shuai Chen
- Laboratory for Bone and Joint Disease, Model Animal Research Center (MARC), Nanjing University, Nanjing 210093, China
| | - Tianwei Xia
- Department of Traumatology and Orthopedics, Jiangsu Traditional Chinese Medicine Hospital, Nanjing 210029, China
| | - Jirong Shen
- Department of Traumatology and Orthopedics, Jiangsu Traditional Chinese Medicine Hospital, Nanjing 210029, China
| | - Huajian Teng
- Laboratory for Bone and Joint Disease, Model Animal Research Center (MARC), Nanjing University, Nanjing 210093, China
| | - Qing Jiang
- Department of Sports Medicine and Adult Reconstructive Surgery, Drum Tower Hospital, School of Medicine, Nanjing University, Nanjing 210008, China.,Laboratory for Bone and Joint Disease, Model Animal Research Center (MARC), Nanjing University, Nanjing 210093, China
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Yang Y, Gu Y, Zhao H, Zhang S. Loganin Attenuates Osteoarthritis in Rats by Inhibiting IL-1β-Induced Catabolism and Apoptosis in Chondrocytes Via Regulation of Phosphatidylinositol 3-Kinases (PI3K)/Akt. Med Sci Monit 2019; 25:4159-4168. [PMID: 31162482 PMCID: PMC6561138 DOI: 10.12659/msm.915064] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
Background Chondrocyte apoptosis and catabolism are 2 major factors that contribute to the progression of osteoarthritis (OA). Loganin, an iridoid glycoside present in several herbs, including Flos lonicerae, Cornus mas L, and Strychnos nux vomica, is a valuable medication with anti-inflammatory and anti-apoptotic effects. Our study examines these effects and explores the potential benefits of loganin in the OA treatment. Material/Methods To clarify the roles of loganin in OA and its specific signaling pathway, chondrocytes were administrated with IL-1β and supplemented with or without LY294002 (a classic PI3K/Akt inhibitor). The apoptotic level, catabolic factors (MMP-3 and MMP-13 and ADAMTS-4 and ADAMTS-5), extracellular matrix (ECM) degradation, and activation of the PI3K/Akt pathway were evaluated using western blotting, PCR, and an immunofluorescent assay. The degenerative condition of the cartilage was evaluated using the Safranin O assay in vivo. The expression of cleaved-caspase-3 (C-caspase-3) was measured using immunochemistry. Results The data suggested that loganin suppressed the apoptotic level, reduced the release of catabolic enzymes, and decreased the ECM degradation of IL-1β-induced chondrocytes. However, suppressing PI3K/Akt signaling using LY294002 alleviated the therapeutic effects of loganin in chondrocytes. Our in vivo experiment showed that loganin partially attenuated cartilage degradation while inhibiting the apoptotic level. Conclusions This work revealed that loganin treatment attenuated IL-1β-treated apoptosis and ECM catabolism in rat chondrocytes via regulation of the PI3K/Akt signaling, revealing that loganin is a potentially useful treatment for OA.
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Affiliation(s)
- Yi Yang
- Department of Orthopedics Area I, The Second Affiliated Hospital of Hainan Medical University, Haikou, Hainan, China (mainland)
| | - Yuntao Gu
- Department of Orthopedics Area I, The Second Affiliated Hospital of Hainan Medical University, Haikou, Hainan, China (mainland)
| | - Hai Zhao
- Department of Orthopedics Area I, The Second Affiliated Hospital of Hainan Medical University, Haikou, Hainan, China (mainland)
| | - Shunli Zhang
- Department of Orthopedics Area I, The Second Affiliated Hospital of Hainan Medical University, Haikou, Hainan, China (mainland)
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Berenbaum F, Griffin TM, Liu-Bryan R. Review: Metabolic Regulation of Inflammation in Osteoarthritis. Arthritis Rheumatol 2019; 69:9-21. [PMID: 27564539 DOI: 10.1002/art.39842] [Citation(s) in RCA: 142] [Impact Index Per Article: 28.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2016] [Accepted: 08/09/2016] [Indexed: 01/15/2023]
Affiliation(s)
- Francis Berenbaum
- Sorbonnes Universités, UPMC University Paris 06, INSERM, AP-HP Hôpital Saint-Antoine, Centre de Recherche Saint-Antoine, DHU i2B, Paris, France
| | - Timothy M Griffin
- Oklahoma Medical Research Foundation and University of Oklahoma Health Sciences Center, Oklahoma City
| | - Ru Liu-Bryan
- VA San Diego Healthcare System and University of California, San Diego
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Abstract
The increase in global lifespan has in turn increased the prevalence of osteoarthritis which is now the most common type of arthritis. Cartilage tissue located on articular joints erodes during osteoarthritis which causes pain and may lead to a crippling loss of function in patients. The pathophysiology of osteoarthritis has been understudied and currently no disease modifying treatments exist. The only current end-point treatment remains joint replacement surgery. The primary risk factor for osteoarthritis is age. Clinical and basic research is now focused on understanding the ageing process of cartilage and its role in osteoarthritis. This chapter will outline the physiology of cartilage tissue, the clinical presentation and treatment options for the disease and the cellular ageing processes which are involved in the pathophysiology of the disease.
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Li HZ, Xu XH, Lu HD. Identification of key genes and construction of CircRNA–miRNA–mRNA regulatory networks in osteoarthritis. ELECTRON J BIOTECHN 2019. [DOI: 10.1016/j.ejbt.2018.11.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
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Chen LY, Wang Y, Terkeltaub R, Liu-Bryan R. Activation of AMPK-SIRT3 signaling is chondroprotective by preserving mitochondrial DNA integrity and function. Osteoarthritis Cartilage 2018; 26:1539-1550. [PMID: 30031925 PMCID: PMC6202232 DOI: 10.1016/j.joca.2018.07.004] [Citation(s) in RCA: 73] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/21/2018] [Revised: 06/11/2018] [Accepted: 07/02/2018] [Indexed: 02/02/2023]
Abstract
OBJECTIVE In osteoarthritis (OA), articular chondrocytes manifest mitochondrial damage, including mitochondrial DNA 4977-bp (mtDNA4977) deletion that impairs mitochondrial function. OA chondrocytes have decreased activity of AMPK, an energy biosensor that promotes mitochondrial biogenesis. Here, we tested if pharmacologic AMPK activation, via downstream activation of predominately mitochondrially localized sirtuin 3 (SIRT3), reverses existing decreases in mitochondrial DNA (mtDNA) integrity and function in human OA chondrocytes and limits mouse knee OA development. DESIGN We assessed mtDNA integrity and function including the common mtDNA4977 deletion and mtDNA content, mitochondrial reactive oxygen species (mtROS) generation, oxygen consumption and intracellular ATP levels. Phosphorylation of AMPKα, expression and activity of SIRT3, acetylation and expression of the mitochondrial antioxidant enzyme SOD2 and DNA repair enzyme 8-oxoguanine glycosylase (OGG1), and expression of subunits of mitochondrial respiratory complexes were examined. We assessed effect of pharmacologic activation of AMPK on age-related spontaneous mouse knee OA. RESULTS The mtDNA4977 deletion was detected in both OA chondrocytes and menadione-treated normal chondrocytes, associated with increased mtROS, decreased SIRT3, and increased acetylation of SOD2 and OGG1. AMPKα1 deficient chondrocytes exhibited significantly reduced SIRT3 activity. AMPK pharmacologic activation attenuated existing mtDNA4977 deletion and improved mitochondrial functions in OA chondrocytes via SIRT3 by reducing acetylation and increasing expression of SOD2 and OGG1, and limited aging-associated mouse knee OA development and progression. CONCLUSIONS AMPK activation, via SIRT3, limits oxidative stress and improves mtDNA integrity and function in OA chondrocytes. These effects likely contribute to chondroprotective effects of AMPK activity.
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Affiliation(s)
| | | | - Robert Terkeltaub
- VA San Diego Healthcare System, San Diego, CA,Dept. of Medicine, UC San Diego
| | - Ru Liu-Bryan
- VA San Diego Healthcare System, San Diego, CA,Dept. of Medicine, UC San Diego,To Whom Correspondence should be addressed: Ru Liu-Bryan PhD, VA San Diego Healthcare System, 111K, 3350 La Jolla Village Drive, San Diego, CA 92161. Telephone: 858 552 8585. Fax: 858 552 7425,
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Han YH, Kee JY, Hong SH. Rosmarinic Acid Activates AMPK to Inhibit Metastasis of Colorectal Cancer. Front Pharmacol 2018; 9:68. [PMID: 29459827 PMCID: PMC5807338 DOI: 10.3389/fphar.2018.00068] [Citation(s) in RCA: 65] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2017] [Accepted: 01/18/2018] [Indexed: 12/16/2022] Open
Abstract
Rosmarinic acid (RA) has been used as an anti-inflammatory, anti-diabetic, and anti-cancer agent. Although RA has also been shown to exert an anti-metastatic effect, the mechanism of this effect has not been reported to be associated with AMP-activated protein kinase (AMPK). The aim of this study was to elucidate whether RA could inhibit the metastatic properties of colorectal cancer (CRC) cells via the phosphorylation of AMPK. RA inhibited the proliferation of CRC cells through the induction of cell cycle arrest and apoptosis. In several metastatic phenotypes of CRC cells, RA regulated epithelial-mesenchymal transition (EMT) through the upregulation of an epithelial marker, E-cadherin, and the downregulation of the mesenchymal markers, N-cadherin, snail, twist, vimentin, and slug. Invasion and migration of CRC cells were inhibited and expressions of matrix metalloproteinase (MMP)-2 and MMP-9 were decreased by RA treatment. Adhesion and adhesion molecules such as ICAM-1 and integrin β1 expressions were also reduced by RA treatment. In particular, the effects of RA on EMT and MMPs expressions were due to the activation of AMPK. Moreover, RA inhibited lung metastasis of CRC cells by activating AMPK in mouse model. Collectively, these results proved that RA could be potential therapeutic agent against metastasis of CRC.
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Affiliation(s)
- Yo-Han Han
- Department of Oriental Pharmacy, College of Pharmacy, Wonkwang-Oriental Medicines Research Institute, Wonkwang University, Iksan, South Korea
| | - Ji-Ye Kee
- Department of Oriental Pharmacy, College of Pharmacy, Wonkwang-Oriental Medicines Research Institute, Wonkwang University, Iksan, South Korea
| | - Seung-Heon Hong
- Department of Oriental Pharmacy, College of Pharmacy, Wonkwang-Oriental Medicines Research Institute, Wonkwang University, Iksan, South Korea
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Cordero MD, Williams MR, Ryffel B. AMP-Activated Protein Kinase Regulation of the NLRP3 Inflammasome during Aging. Trends Endocrinol Metab 2018; 29:8-17. [PMID: 29150317 DOI: 10.1016/j.tem.2017.10.009] [Citation(s) in RCA: 98] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/27/2017] [Revised: 10/25/2017] [Accepted: 10/29/2017] [Indexed: 12/28/2022]
Abstract
The NLRP3 inflammasome has recently emerged as an unexpected marker of stress and metabolic risk and has also been implicated in the development of major aging-related diseases such as gout, type 2 diabetes, obesity, cancer, and neurodegenerative and cardiovascular disorders. Several pathways regulating the NLRP3 inflammasome are currently being studied, but how the NLRP3 inflammasome is regulated remains unknown. AMP-activated protein kinase (AMPK), a central regulator of multiple metabolic pathways involved in the pathophysiology of aging and age-related diseases, has emerged as an important integrator of signals controlling inflammation including the inflammasome. In this Opinion article, we show that several AMPK-dependent pathways regulate NLRP3 inflammasome activation during aging, suggesting NLRP3 as a potential pharmacological target in age-related diseases.
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Affiliation(s)
- Mario D Cordero
- Institute of Nutrition and Food Technology 'José Mataix Verdú', Department of Physiology, Biomedical Research Center, University of Granada, 18100 Granada, Spain.
| | | | - Bernhard Ryffel
- Laboratory of Experimental and Molecular Immunology and Neurogenetics (INEM), UMR 7355 CNRS-University of Orleans, Orléans, France and IDM, University of Cape Town, Cape Town, South Africa
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LKB1 loss cooperating with BRAF V600E promotes melanoma cell invasion and migration by up-regulation MMP-2 via PI3K/Akt/mTOR pathway. Oncotarget 2017; 8:113847-113857. [PMID: 29371951 PMCID: PMC5768368 DOI: 10.18632/oncotarget.22943] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2017] [Accepted: 08/04/2017] [Indexed: 11/25/2022] Open
Abstract
The serine/threonine kinase LKB1, act as a tumor suppressor, has been reported in several sporadic cancers. However, how the loss of LKB1 promotes melanoma invasion and metastasis remains incompletely understood. In this study, we inactivated LKB1expression by RNA interference in BRAF mutation and wild type melanoma cells respectively. We found LKB1 inactivation cooperate with BRAF V600E lead to melanoma cells more aggressive by a series of experiments including wound scratch test, Transwell assay. While single alteration, either LKB1 loss or BRAF V600E, fails to enhance melanoma cells invasion ability. Mechanistically, LKB1 loss synergism with BRAF V600E resulted in the activation of the PI3K/Akt/mTOR signaling pathway and significant up-regulation expression of MMP-2. In addition, LKB1 expression in human melanoma tissues was negatively associated with MMP-2 expression in the presence of BRAF V600E. Thus, our findings indicate a probable explanation on LKB1 function as a tumor suppressor in melanoma and a new therapeutic strategy for melanoma by targeting on BRAF and LKB1 together.
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Abstract
Osteoarthritis is characterized by a chronic, progressive and irreversible degradation of the articular cartilage associated with joint inflammation and a reparative bone response. More than 100 million people are affected by this condition worldwide with significant health and welfare costs. Our available treatment options in osteoarthritis are extremely limited. Chondral or osteochondral grafts have shown some promising results but joint replacement surgery is by far the most common therapeutic approach. The difficulty lies on the limited regeneration capacity of the articular cartilage, poor blood supply and the paucity of resident progenitor stem cells. In addition, our poor understanding of the molecular signalling pathways involved in the senescence and apoptosis of chondrocytes is a major factor restricting further progress in the area. This review focuses on molecules and approaches that can be implemented to delay or even rescue chondrocyte apoptosis. Ways of modulating the physiologic response to trauma preventing chondrocyte death are proposed. The use of several cytokines, growth factors and advances made in altering several of the degenerative genetic pathways involved in chondrocyte apoptosis and degradation are also presented. The suggested approaches can help clinicians to improve cartilage tissue regeneration.
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Affiliation(s)
- Ippokratis Pountos
- Academic Department of Trauma & Orthopaedics, School of Medicine, University of Leeds, UK.
| | - Peter V Giannoudis
- Academic Department of Trauma & Orthopaedics, School of Medicine, University of Leeds, UK; NIHR Leeds Biomedical Research Center, Chapel Allerton Hospital, Leeds, UK.
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Therapeutic Effects of Olive and Its Derivatives on Osteoarthritis: From Bench to Bedside. Nutrients 2017; 9:nu9101060. [PMID: 28954409 PMCID: PMC5691677 DOI: 10.3390/nu9101060] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2017] [Revised: 09/11/2017] [Accepted: 09/20/2017] [Indexed: 01/11/2023] Open
Abstract
Osteoarthritis is a major cause of morbidity among the elderly worldwide. It is a disease characterized by localized inflammation of the joint and destruction of cartilage, leading to loss of function. Impaired chondrocyte repair mechanisms, due to inflammation, oxidative stress and autophagy, play important roles in the pathogenesis of osteoarthritis. Olive and its derivatives, which possess anti-inflammatory, antioxidant and autophagy-enhancing activities, are suitable candidates for therapeutic interventions for osteoarthritis. This review aimed to summarize the current evidence on the effects of olive and its derivatives, on osteoarthritis and chondrocytes. The literature on animal and human studies has demonstrated a beneficial effect of olive and its derivatives on the progression of osteoarthritis. In vitro studies have suggested that the augmentation of autophagy (though sirtuin-1) and suppression of inflammation by olive polyphenols could contribute to the chondroprotective effects of olive polyphenols. More research and well-planned clinical trials are required to justify the use of olive-based treatment in osteoarthritis.
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Low molecular weight xanthan gum suppresses oxidative stress-induced apoptosis in rabbit chondrocytes. Carbohydr Polym 2017; 169:255-263. [DOI: 10.1016/j.carbpol.2017.04.018] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2017] [Revised: 04/06/2017] [Accepted: 04/10/2017] [Indexed: 01/07/2023]
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Abstract
PURPOSE OF REVIEW Interest in the metabolic syndrome-associated osteoarthritis phenotype is increasing. Here, we summarize recently published significant findings. RECENT FINDINGS Meta-analyses confirmed an association between type 2 diabetes and osteoarthritis and between cardiovascular diseases and osteoarthritis. Recent advances in the study of metabolic syndrome-associated osteoarthritis have focused on a better understanding of the role of metabolic diseases in inducing or aggravating joint damage. In-vivo models of obesity, diabetes, or dyslipidemia have helped to better decipher this association. They give emerging evidence that, beyond the role of common pathogenic mechanisms for metabolic diseases and osteoarthritis (i.e., low-grade inflammation and oxidative stress), metabolic diseases have a direct systemic effect on joints. In addition to the impact of weight, obesity-associated inflammation is associated with osteoarthritis severity and may modulate osteoarthritis progression in mouse models. As well, osteoarthritis synovium from type 2 diabetic patients shows insulin-resistant features, which may participate in joint catabolism. Finally, exciting data are emerging on the association of gut microbiota and circadian rhythm and metabolic syndrome-associated osteoarthritis. SUMMARY The systemic role of metabolic syndrome in osteoarthritis pathophysiology is now better understood, but new avenues of research are being pursued to better decipher the metabolic syndrome-associated osteoarthritis phenotype.
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