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Ren X, Zhuang H, Jiang F, Zhang Y, Zhou P. Barasertib impedes chondrocyte senescence and alleviates osteoarthritis by mitigating the destabilization of heterochromatin induced by AURKB. Biomed Pharmacother 2023; 166:115343. [PMID: 37634474 DOI: 10.1016/j.biopha.2023.115343] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 08/12/2023] [Accepted: 08/19/2023] [Indexed: 08/29/2023] Open
Abstract
Osteoarthritis (OA) is a common joint disease characterized by progressive cartilage loss that causes disability worldwide. The accumulation of senescent chondrocytes in aging human cartilage contributes to the high incidence of OA. Heterochromatin instability, the hallmark and driving factor of senescence, regulates the expression of the senescence-associated secretory phenotype that induces inflammation and cartilage destruction. However, the role of heterochromatin instability in OA progression remains unclear. In this work, we identified AURKB as a key senescence-associated chromatin regulator using bioinformatics methods. We found that AURKB was upregulated in OA cartilage and chondrocytes exposed to abnormal mechanical strain. Overexpression of AURKB could cause senescence and heterochromatin instability. Furthermore, the AURKB inhibitor Barasertib reversed senescence and heterochromatin instability in chondrocytes and alleviated OA in a rat model. Mechanistically, abnormal mechanical strain increased AURKB levels through the Piezo1/Ca2+ signaling axis. Blocking Piezo1/Ca2+ signaling by short interfering RNA against Piezo1 and Ca2+ chelator BAPTA could reduce the expression of AURKB and alleviate senescence in chondrocytes exposed to abnormal mechanical strain. In conclusion, our data confirmed that abnormal mechanical strain increases the expression of AURKB by activating the Piezo1/Ca2+ signaling axis, leading to destabilized heterochromatin and senescence in chondrocytes, whereas Barasertib consolidates heterochromatin, counteracts senescence and alleviates OA.
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Affiliation(s)
- Xunshan Ren
- Department of Orthopedics, Renmin Hospital of Wuhan University, Wuhan, China
| | - Huangming Zhuang
- Department of Orthopedics, Renmin Hospital of Wuhan University, Wuhan, China
| | - Fuze Jiang
- Department of Orthopedics, Renmin Hospital of Wuhan University, Wuhan, China
| | - Yuelong Zhang
- Department of Orthopedics, Renmin Hospital of Wuhan University, Wuhan, China
| | - Panghu Zhou
- Department of Orthopedics, Renmin Hospital of Wuhan University, Wuhan, China.
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2
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Wang X, Li X. Regulation of pain neurotransmitters and chondrocytes metabolism mediated by voltage-gated ion channels: A narrative review. Heliyon 2023; 9:e17989. [PMID: 37501995 PMCID: PMC10368852 DOI: 10.1016/j.heliyon.2023.e17989] [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: 01/15/2023] [Revised: 05/15/2023] [Accepted: 07/04/2023] [Indexed: 07/29/2023] Open
Abstract
Osteoarthritis (OA) is one of the leading causes of chronic pain and dysfunction. It is essential to comprehend the nature of pain and cartilage degeneration and its influencing factors on OA treatment. Voltage-gated ion channels (VGICs) are essential in chondrocytes and extracellular matrix (ECM) metabolism and regulate the pain neurotransmitters between the cartilage and the central nervous system. This narrative review focused primarily on the effects of VGICs regulating pain neurotransmitters and chondrocytes metabolism, and most studies have focused on voltage-sensitive calcium channels (VSCCs), voltage-gated sodium channels (VGSCs), acid-sensing ion channels (ASICs), voltage-gated potassium channels (VGKCs), voltage-gated chloride channels (VGCCs). Various ion channels coordinate to maintain the intracellular environment's homeostasis and jointly regulate metabolic and pain under normal circumstances. In the OA model, the ion channel transport of chondrocytes is abnormal, and calcium influx is increased, which leads to increased neuronal excitability. The changes in ion channels are strongly associated with the OA disease process and individual OA risk factors. Future studies should explore how VGICs affect the metabolism of chondrocytes and their surrounding tissues, which will help clinicians and pharmacists to develop more effective targeted drugs to alleviate the progression of OA disease.
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3
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Guan Z, Jin X, Guan Z, Liu S, Tao K, Luo L. The gut microbiota metabolite capsiate regulate SLC2A1 expression by targeting HIF-1α to inhibit knee osteoarthritis-induced ferroptosis. Aging Cell 2023:e13807. [PMID: 36890785 DOI: 10.1111/acel.13807] [Citation(s) in RCA: 23] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Revised: 02/10/2023] [Accepted: 02/13/2023] [Indexed: 03/10/2023] Open
Abstract
Ferroptosis is an iron-dependent cell death that has been found to aggravate the progression of osteoarthritis (OA) and gut microbiota- OA axis refers to the bidirectional information network between the gut microbiota and OA, which may provide a new way to protect the OA. However, the role of gut microbiota-derived metabolites in ferroptosis-relative osteoarthritis remains unclear. The objective of this study was to analyze the protective effect of gut microbiota and its metabolite capsiate (CAT) on ferroptosis-relative osteoarthritis in vivo and in vitro experiments. From June 2021 to February 2022, 78 patients were evaluated retrospectively and divided into two groups: The health group (n = 39) and the OA group (n = 40). Iron and oxidative stress indicators were determined in peripheral blood samples. And then in vivo and in vitro experiments, a surgically destabilized medial meniscus (DMM) mice model was established and treated with CAT or Ferric Inhibitor-1 (Fer-1). Solute Carrier Family 2 Member 1 (SLC2A1) short hairpin RNA (shRNA) was utilized to inhibit SLC2A1 expression. Serum iron was increased significantly but total iron binding capacity was decreased significantly in OA patients than healthy people (p < 0.0001). The least absolute shrinkage and selection operator clinical prediction model suggested that serum iron, total iron binding capacity, transferrin, and superoxide dismutase were all independent predictors of OA (p < 0.001). Bioinformatics results suggested that SLC2A1, Metastasis-Associated Lung Adenocarcinoma Transcript 1 (MALAT1), and HIF-1α (Hypoxia Inducible Factor 1 Alpha)-related oxidative stress signaling pathways play an important role in iron homeostasis and OA. In addition, gut microbiota 16s RNA sequencing and untargeted metabolomics were used to find that gut microbiota metabolites CAT in mice with osteoarthritis were negatively correlated with Osteoarthritis Research Society International (OARSI) scores for chondrogenic degeneration (p = 0.0017). Moreover, CAT reduced ferroptosis-dependent osteoarthritis in vivo and in vitro. However, the protective effect of CAT against ferroptosis-dependent osteoarthritis could be eliminated by silencing SLC2A1. SLC2A1 was upregulated but reduced the SLC2A1 and HIF-1α levels in the DMM group. HIF-1α, MALAT1, and apoptosis levels were increased after SLC2A1 knockout in chondrocyte cells (p = 0.0017). Finally, downregulation of SLC2A1 expression by Adeno-associated Virus (AAV) -SLC2A1 shRNA improves osteoarthritis in vivo. Our findings indicated that CAT inhibited HIF-1a expression and reduced ferroptosis-relative osteoarthritis progression by activating SLC2A1.
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Affiliation(s)
- Zhiyuan Guan
- Department of Orthopedics, The Shanghai Tenth People's Hospital of Tongji University, Shanghai, China.,Department of Ophthalmology, Tongren Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xiao Jin
- Department of Rheumatology and Immunology, The First People's Hospital of Xuzhou, Jiangsu, Xuzhou, China.,Department of Dermatology, Xuzhou Municipal Hospital Affiliated with Xuzhou Medical University, Jiangsu, Xuzhou, China
| | - Zhiqiang Guan
- Department of Dermatology, Xuzhou Municipal Hospital Affiliated with Xuzhou Medical University, Jiangsu, Xuzhou, China
| | - Shengfu Liu
- Department of Orthopedics, The Shanghai Tenth People's Hospital of Tongji University, Shanghai, China
| | - Kun Tao
- Department of Orthopedics, The Shanghai Tenth People's Hospital of Tongji University, Shanghai, China
| | - Liying Luo
- Department of Ophthalmology, Tongren Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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4
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Simpson S, Rizvanov AA, Jeyapalan JN, de Brot S, Rutland CS. Canine osteosarcoma in comparative oncology: Molecular mechanisms through to treatment discovery. Front Vet Sci 2022; 9:965391. [PMID: 36570509 PMCID: PMC9773846 DOI: 10.3389/fvets.2022.965391] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Accepted: 11/23/2022] [Indexed: 12/13/2022] Open
Abstract
Cancer is a leading cause of non-communicable morbidity and mortality throughout the world, similarly, in dogs, the most frequent cause of mortality is tumors. Some types of cancer, including osteosarcoma (OSA), occur at much higher rates in dogs than people. Dogs therefore not only require treatment themselves but can also act as an effective parallel patient population for the human disease equivalent. It should be noted that although there are many similarities between canine and human OSA, there are also key differences and it is important to research and highlight these features. Despite progress using chorioallantoic membrane models, 2D and 3D in vitro models, and rodent OSA models, many more insights into the molecular and cellular mechanisms, drug development, and treatment are being discovered in a variety of canine OSA patient populations.
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Affiliation(s)
- Siobhan Simpson
- Faculty of Medicine and Health Sciences, School of Veterinary Medicine and Science, University of Nottingham, Nottingham, United Kingdom
| | - Albert A. Rizvanov
- Faculty of Medicine and Health Sciences, School of Veterinary Medicine and Science, University of Nottingham, Nottingham, United Kingdom,Institute of Fundamental Medicine and Biology, Kazan Federal University, Kazan, Russia
| | - Jennie N. Jeyapalan
- Faculty of Medicine and Health Sciences, School of Veterinary Medicine and Science, University of Nottingham, Nottingham, United Kingdom,Faculty of Medicine and Health Science, Biodiscovery Institute, University of Nottingham, Nottingham, United Kingdom
| | - Simone de Brot
- Faculty of Medicine and Health Sciences, School of Veterinary Medicine and Science, University of Nottingham, Nottingham, United Kingdom,Comparative Pathology Platform (COMPATH), Institute of Animal Pathology, University of Bern, Bern, Switzerland
| | - Catrin S. Rutland
- Faculty of Medicine and Health Sciences, School of Veterinary Medicine and Science, University of Nottingham, Nottingham, United Kingdom,*Correspondence: Catrin S. Rutland
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McClenaghan C, Nichols CG. Kir6.1 and SUR2B in Cantú syndrome. Am J Physiol Cell Physiol 2022; 323:C920-C935. [PMID: 35876283 PMCID: PMC9467476 DOI: 10.1152/ajpcell.00154.2022] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Revised: 07/07/2022] [Accepted: 07/07/2022] [Indexed: 12/25/2022]
Abstract
Kir6.1 and SUR2 are subunits of ATP-sensitive potassium (KATP) channels expressed in a wide range of tissues. Extensive study has implicated roles of these channel subunits in diverse physiological functions. Together they generate the predominant KATP conductance in vascular smooth muscle and are the target of vasodilatory drugs. Roles for Kir6.1/SUR2 dysfunction in disease have been suggested based on studies of animal models and human genetic discoveries. In recent years, it has become clear that gain-of-function (GoF) mutations in both genes result in Cantú syndrome (CS)-a complex, multisystem disorder. There is currently no targeted therapy for CS, but studies of mouse models of the disease reveal that pharmacological reversibility of cardiovascular and gastrointestinal pathologies can be achieved by administration of the KATP channel inhibitor, glibenclamide. Here we review the function, structure, and physiological and pathological roles of Kir6.1/SUR2B channels, with a focus on CS. Recent studies have led to much improved understanding of the underlying pathologies and the potential for treatment, but important questions remain: Can the study of genetically defined CS reveal new insights into Kir6.1/SUR2 function? Do these reveal new pathophysiological mechanisms that may be important in more common diseases? And is our pharmacological armory adequately stocked?
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Affiliation(s)
- Conor McClenaghan
- Department of Cell Biology and Physiology, Center for the Investigation of Membrane Excitability Diseases (CIMED), Washington University, St. Louis, Missouri
| | - Colin G Nichols
- Department of Cell Biology and Physiology, Center for the Investigation of Membrane Excitability Diseases (CIMED), Washington University, St. Louis, Missouri
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6
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Yu Q, Huang Y, Chen X, Chen Y, Zhu X, Liu Y, Liu J. A neutrophil cell membrane-biomimetic nanoplatform based on L-arginine nanoparticles for early osteoarthritis diagnosis and nitric oxide therapy. NANOSCALE 2022; 14:11619-11634. [PMID: 35894521 DOI: 10.1039/d2nr02601e] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Osteoarthritis (OA) is a common debilitating disease affecting articular joints for which no effective disease-modifying early diagnosis or medical therapy tools are currently available. The inefficient delivery of drugs into inflamed chondrocytes has restricted the development of anti-OA medication. Evidence has shown that inflammatory neutrophils possess the property of targeting inflammation via inflammatory tissue recruiting. Herein, we report neutrophil-cell-membrane-based biomimetic nanoparticles (NM-LANPs@Ru) as an OA theranostic nanoplatform; they act as a NO delivery system, coating neutrophil cell membrane onto the surface of self-assembled PEGylated L-arginine nanoparticles (LANPs) to act as a NO donor and loading a Ru complex to act as a ROS inducer. NM-LANPs@Ru demonstrated the specific targeting of inflamed OA with low toxicity, good NO release, and excellent fluorescence/photoacoustic (FL/PA) imaging properties. We showed that NM-LANPs@Ru exhibited enhanced cellular association in inflamed chondrocyte cells (C28/I2), much higher than NO release from ROS oxidized LA, and it improved the inhibition of the apoptosis of inflamed C28/I2 cells compared with control treatments. In vivo studies demonstrated that NM-LANPs@Ru effectively targeted inflamed OA, based on real-time dual-modal FL/PA imaging, eventually exhibiting its excellent anti-inflammatory activity. Our study may provide a new approach for the early diagnosis and treatment of osteoarthritis using a neutrophil-cell-membrane-based biomimetic nanoplatform for NO or drug delivery.
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Affiliation(s)
- Qianqian Yu
- South China Advanced Institute for Soft Matter Science and Technology, School of Molecular Science and Engineering, South China University of Technology, Guangzhou, China
| | - Yuqin Huang
- College of Chemistry and Materials Science, Jinan University, Guangzhou, China.
| | - Xu Chen
- College of Chemistry and Materials Science, Jinan University, Guangzhou, China.
| | - Yutong Chen
- College of Chemistry and Materials Science, Jinan University, Guangzhou, China.
| | - Xufeng Zhu
- College of Chemistry and Materials Science, Jinan University, Guangzhou, China.
| | - Yanan Liu
- College of Chemistry and Materials Science, Jinan University, Guangzhou, China.
| | - Jie Liu
- College of Chemistry and Materials Science, Jinan University, Guangzhou, China.
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7
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Wu X, Fan X, Crawford R, Xiao Y, Prasadam I. The Metabolic Landscape in Osteoarthritis. Aging Dis 2022; 13:1166-1182. [PMID: 35855332 PMCID: PMC9286923 DOI: 10.14336/ad.2021.1228] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Accepted: 12/28/2021] [Indexed: 11/01/2022] Open
Affiliation(s)
- Xiaoxin Wu
- Centre for Biomedical Technologies, Faculty of Engineering, Queensland University of Technology, Brisbane, Queensland, Australia.
- Department of Orthopaedic Surgery, the Second Xiangya Hospital, Central South University, Changsha, Hunan, China.
| | - Xiwei Fan
- Centre for Biomedical Technologies, Faculty of Engineering, Queensland University of Technology, Brisbane, Queensland, Australia.
| | - Ross Crawford
- Centre for Biomedical Technologies, Faculty of Engineering, Queensland University of Technology, Brisbane, Queensland, Australia.
- The Prince Charles Hospital, Orthopedic Department, Brisbane, Queensland, Australia.
| | - Yin Xiao
- Centre for Biomedical Technologies, Faculty of Engineering, Queensland University of Technology, Brisbane, Queensland, Australia.
- Australia-China Centre for Tissue Engineering and Regenerative Medicine, Queensland University of Technology, Brisbane, Queensland, Australia.
| | - Indira Prasadam
- Centre for Biomedical Technologies, Faculty of Engineering, Queensland University of Technology, Brisbane, Queensland, Australia.
- Correspondence should be addressed to: Dr. Indira Prasadam, Centre for Biomedical Technologies, School of Mechanical, Medical and Process Engineering, Queensland University of Technology, Kelvin Grove, QLD, 4059, Australia.
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Mamun AA, Hayashi H, Yamamura A, Nayeem MJ, Sato M. Hypoxia induces the translocation of glucose transporter 1 to the plasma membrane in vascular endothelial cells. J Physiol Sci 2020; 70:44. [PMID: 32962633 PMCID: PMC10717486 DOI: 10.1186/s12576-020-00773-y] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Accepted: 09/11/2020] [Indexed: 12/22/2022]
Abstract
Glucose uptake and adenosine triphosphate (ATP) generation are important for the survival and growth of endothelial cells. An increase of glucose uptake under hypoxia was previously shown to be associated with the increased expression of glucose transporters (GLUTs). However, the regulation of GLUT trafficking to the cell surface has not been examined in detail. Here, we report the characterization of GLUT1 translocation to the plasma membrane during hypoxia in endothelial cells. Human umbilical vein endothelial cells (HUVECs) were exposed to hypoxia (1% O2) for 12 h, which significantly induced GLUT1 expression and translocation to the plasma membrane. GLUT1 translocation was associated with a decrease of intracellular ATP by hypoxia. Decreasing ATP levels with antimycin-A and 2-deoxyglucose induced GLUT1 translocation under normoxia. The induction of hypoxia-inducible factor-1α under normoxia did not influence the cell surface expression of GLUT1 or cellular ATP concentration. Interestingly, the translocation of GLUT1 induced by hypoxia was inhibited by the ATP-sensitive potassium (KATP) channel inhibitor glibenclamide, while the mitochondrial KATP channel inhibitor 5-HD did not influence GLUT1 translocation during hypoxia. These observations indicate that a decrease of intracellular ATP triggers GLUT1 translocation to the plasma membrane and is mediated by KATP channels, which would contribute to glucose uptake in HUVECs during hypoxia.
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Affiliation(s)
- Abdullah Al Mamun
- Department of Physiology, Aichi Medical University, 1-1 Yazako-Karimata, Nagakute-City, Aichi, 4801165, Japan
- Department of Biochemistry and Molecular Biology, Mawlana Bhashani Science and Technology University, Santosh, Tangail, 1902, Bangladesh
| | - Hisaki Hayashi
- Department of Physiology, Aichi Medical University, 1-1 Yazako-Karimata, Nagakute-City, Aichi, 4801165, Japan
| | - Aya Yamamura
- Department of Physiology, Aichi Medical University, 1-1 Yazako-Karimata, Nagakute-City, Aichi, 4801165, Japan
| | - Md Junayed Nayeem
- Department of Physiology, Aichi Medical University, 1-1 Yazako-Karimata, Nagakute-City, Aichi, 4801165, Japan
| | - Motohiko Sato
- Department of Physiology, Aichi Medical University, 1-1 Yazako-Karimata, Nagakute-City, Aichi, 4801165, Japan.
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Molecular Characterisation of Canine Osteosarcoma in High Risk Breeds. Cancers (Basel) 2020; 12:cancers12092405. [PMID: 32854182 PMCID: PMC7564920 DOI: 10.3390/cancers12092405] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 08/13/2020] [Accepted: 08/14/2020] [Indexed: 02/07/2023] Open
Abstract
Dogs develop osteosarcoma (OSA) and the disease process closely resembles that of human OSA. OSA has a poor prognosis in both species and disease-free intervals and cure rates have not improved in recent years. Gene expression in canine OSAs was compared with non-tumor tissue utilising RNA sequencing, validated by qRT-PCR and immunohistochemistry (n = 16). Polymorphic polyglutamine (polyQ) tracts in the androgen receptor (AR/NR3C4) and nuclear receptor coactivator 3 (NCOA3) genes were investigated in control and OSA patients using polymerase chain reaction (PCR), Sanger sequencing and fragment analysis (n = 1019 Rottweilers, 379 Irish Wolfhounds). Our analysis identified 1281 significantly differentially expressed genes (>2 fold change, p < 0.05), specifically 839 lower and 442 elevated gene expression in osteosarcoma (n = 3) samples relative to non-malignant (n = 4) bone. Enriched pathways and gene ontologies were identified, which provide insight into the molecular pathways implicated in canine OSA. Expression of a subset of these genes (SLC2A1, DKK3, MMP3, POSTN, RBP4, ASPN) was validated by qRTPCR and immunohistochemistry (MMP3, DKK3, SLC2A1) respectively. While little variation was found in the NCOA3 polyQ tract, greater variation was present in both polyQ tracts in the AR, but no significant associations in length were made with OSA. The data provides novel insights into the molecular mechanisms of OSA in high risk breeds. This knowledge may inform development of new prevention strategies and treatments for OSA in dogs and supports utilising spontaneous OSA in dogs to improve understanding of the disease in people.
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10
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Insulin Resistance in Osteoarthritis: Similar Mechanisms to Type 2 Diabetes Mellitus. J Nutr Metab 2020; 2020:4143802. [PMID: 32566279 PMCID: PMC7261331 DOI: 10.1155/2020/4143802] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Revised: 05/01/2020] [Accepted: 05/11/2020] [Indexed: 02/06/2023] Open
Abstract
Osteoarthritis (OA) and type 2 diabetes mellitus (T2D) are two of the most widespread chronic diseases. OA and T2D have common epidemiologic traits, are considered heterogenic multifactorial pathologies that develop through the interaction of genetic and environmental factors, and have common risk factors. In addition, both of these diseases often manifest in a single patient. Despite differences in clinical manifestations, both diseases are characterized by disturbances in cellular metabolism and by an insulin-resistant state primarily associated with the production and utilization of energy. However, currently, the primary cause of OA development and progression is not clear. In addition, although OA is manifested as a joint disease, evidence has accumulated that it affects the whole body. As pathological insulin resistance is viewed as a driving force of T2D development, now, we present evidence that the molecular and cellular metabolic disturbances associated with OA are linked to an insulin-resistant state similar to T2D. Moreover, the alterations in cellular energy requirements associated with insulin resistance could affect many metabolic changes in the body that eventually result in pathology and could serve as a unified mechanism that also functions in many metabolic diseases. However, these issues have not been comprehensively described. Therefore, here, we discuss the basic molecular mechanisms underlying the pathological processes associated with the development of insulin resistance; the major inducers, regulators, and metabolic consequences of insulin resistance; and instruments for controlling insulin resistance as a new approach to therapy.
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11
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Ashrafizadeh H, Ashrafizadeh M, Oroojan AA. Type 2 Diabetes Mellitus and Osteoarthritis: the Role of Glucose Transporters. Clin Rev Bone Miner Metab 2020. [DOI: 10.1007/s12018-020-09270-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Dalmao-Fernández A, Lund J, Hermida-Gómez T, Vazquez-Mosquera ME, Rego-Pérez I, Blanco FJ, Fernández-Moreno M. Impaired Metabolic Flexibility in the Osteoarthritis Process: A Study on Transmitochondrial Cybrids. Cells 2020; 9:cells9040809. [PMID: 32230786 PMCID: PMC7226768 DOI: 10.3390/cells9040809] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Revised: 03/19/2020] [Accepted: 03/25/2020] [Indexed: 12/14/2022] Open
Abstract
Osteoarthritis (OA) is the most frequent joint disease; however, the etiopathogenesis is still unclear. Chondrocytes rely primarily on glycolysis to meet cellular energy demand, but studies implicate impaired mitochondrial function in OA pathogenesis. The relationship between mitochondrial dysfunction and OA has been established. The aim of the study was to examine the differences in glucose and Fatty Acids (FA) metabolism, especially with regards to metabolic flexibility, in cybrids from healthy (N) or OA donors. Glucose and FA metabolism were studied using D-[14C(U)]glucose and [1-14C]oleic acid, respectively. There were no differences in glucose metabolism among the cybrids. Osteoarthritis cybrids had lower acid-soluble metabolites, reflecting incomplete FA β-oxidation but higher incorporation of oleic acid into triacylglycerol. Co-incubation with glucose and oleic acid showed that N but not OA cybrids increased their glucose metabolism. When treating with the mitochondrial inhibitor etomoxir, N cybrids still maintained higher glucose oxidation. Furthermore, OA cybrids had higher oxidative stress response. Combined, this indicated that N cybrids had higher metabolic flexibility than OA cybrids. Healthy donors maintained the glycolytic phenotype, whereas OA donors showed a preference towards oleic acid metabolism. Interestingly, the results indicated that cybrids from OA patients had mitochondrial impairments and reduced metabolic flexibility compared to N cybrids.
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Affiliation(s)
- Andrea Dalmao-Fernández
- Grupo de Investigación en Reumatología, Instituto de Investigación Biomédica de A Coruña (INIBIC), Agrupación estratégica CICA-INIBIC, Complexo Hospitalario Universitario de A Coruña (CHUAC), Sergas. Universidade da Coruña (UDC), 15006 A Coruña, Spain; (A.D.-F.); (T.H.-G.); (M.E.V.-M.); (I.R.-P.)
| | - Jenny Lund
- Section for Pharmacology and Pharmaceutical Biosciences, Department of Pharmacy, University of Oslo, 0363 Oslo, Norway;
| | - Tamara Hermida-Gómez
- Grupo de Investigación en Reumatología, Instituto de Investigación Biomédica de A Coruña (INIBIC), Agrupación estratégica CICA-INIBIC, Complexo Hospitalario Universitario de A Coruña (CHUAC), Sergas. Universidade da Coruña (UDC), 15006 A Coruña, Spain; (A.D.-F.); (T.H.-G.); (M.E.V.-M.); (I.R.-P.)
| | - María E Vazquez-Mosquera
- Grupo de Investigación en Reumatología, Instituto de Investigación Biomédica de A Coruña (INIBIC), Agrupación estratégica CICA-INIBIC, Complexo Hospitalario Universitario de A Coruña (CHUAC), Sergas. Universidade da Coruña (UDC), 15006 A Coruña, Spain; (A.D.-F.); (T.H.-G.); (M.E.V.-M.); (I.R.-P.)
| | - Ignacio Rego-Pérez
- Grupo de Investigación en Reumatología, Instituto de Investigación Biomédica de A Coruña (INIBIC), Agrupación estratégica CICA-INIBIC, Complexo Hospitalario Universitario de A Coruña (CHUAC), Sergas. Universidade da Coruña (UDC), 15006 A Coruña, Spain; (A.D.-F.); (T.H.-G.); (M.E.V.-M.); (I.R.-P.)
| | - Francisco J. Blanco
- Grupo de Investigación en Reumatología, Instituto de Investigación Biomédica de A Coruña (INIBIC), Agrupación estratégica CICA-INIBIC, Complexo Hospitalario Universitario de A Coruña (CHUAC), Sergas. Universidade da Coruña (UDC), 15006 A Coruña, Spain; (A.D.-F.); (T.H.-G.); (M.E.V.-M.); (I.R.-P.)
- Correspondence: (F.J.B.); (M.F.-M.)
| | - Mercedes Fernández-Moreno
- Grupo de Investigación en Reumatología, Instituto de Investigación Biomédica de A Coruña (INIBIC), Agrupación estratégica CICA-INIBIC, Complexo Hospitalario Universitario de A Coruña (CHUAC), Sergas. Universidade da Coruña (UDC), 15006 A Coruña, Spain; (A.D.-F.); (T.H.-G.); (M.E.V.-M.); (I.R.-P.)
- Centro de investigación biomédica en Red, Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), 28029 Madrid, Spain
- Correspondence: (F.J.B.); (M.F.-M.)
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13
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Chetina EV, Markova GA, Sharapova EP. [there any association of metabolic disturbances with joint destruction and pain?]. BIOMEDIT︠S︡INSKAI︠A︡ KHIMII︠A︡ 2020; 65:441-456. [PMID: 31876515 DOI: 10.18097/pbmc20196506441] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Osteoarthritis and type 2 diabetes mellitus represent two the most common chronic diseases. They possess many shared epidemiologic traits, have common risk factors, and embody heterogeneous multifactorial pathologies, which develop due to interaction of genetic an environmental factors. In addition, these diseases are often occurring in the same patient. In spite of the differences in clinical manifestation both diseases have similar disturbances of cellular metabolism, primarily associated with ATP production and utilization. The review discusses molecular mechanisms determining pathophysiological processes associated with glucose and lipid metabolism as well as the means aiming to alleviate the disturbances of energy metabolism as a new a therapeutic approach.
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Affiliation(s)
- E V Chetina
- Nasonova Research Institute of Rheumatology, Moscow, Russia
| | - G A Markova
- Nasonova Research Institute of Rheumatology, Moscow, Russia
| | - E P Sharapova
- Nasonova Research Institute of Rheumatology, Moscow, Russia
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14
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Analysis of methylation datasets identified significantly changed genes and functional pathways in osteoarthritis. Clin Rheumatol 2019; 38:3529-3538. [PMID: 31376087 DOI: 10.1007/s10067-019-04700-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2019] [Revised: 07/11/2019] [Accepted: 07/15/2019] [Indexed: 01/15/2023]
Abstract
BACKGROUND Researches indicate that epigenetics was involved in osteoarthritis (OA). The purpose of this study was to describe the alterations of DNA methylation in hip and knee OA by comparing DNA methylome of OA cartilage and non-OA samples and to identify novel genes and pathways associated with OA. METHODS We gained two expression profiling datasets (GSE73626 and GSE63695) from the GEO dataset. The RnBeads in R package was used to identify differentially methylated CpG sites. Genes that showed significant differences in DNA methylation between OA and normal control groups underwent functional annotation analysis using the online tool of GeneCodis. Furthermore, we used the Sequenom MassARRAY platform (CapitalBio, Beijing, China) to perform the quantitative methylation analysis. RESULTS A total of 249 hypermethylated sites and 96 hypomethylated sites were obtained from OA samples compared with normal control samples. Functional analysis of differentially methylated genes obtained that embryonic skeletal system morphogenesis, cartilage development, and skeletal system development may be involved in the pathogenesis of OA. Eight genes including HOXB3, HOXB4, HOXB6, HOXC4, HOXC10, HOXD3, TBX3, and TBX5 were identified as potential novel biomarkers for OA. CONCLUSION Taken together, our study found different molecular characteristics between OA patients and normal controls. This may provide new clues to elucidate the pathogenesis of OA.Key Points• Embryonic skeletal system morphogenesis, cartilage development, skeletal system development may be involved in the pathogenesis of OA.• Eight genes are identified as potential novel markers for OA.• Our future in vivo molecular intervention experiments will extend our current findings.
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15
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Mishra S, Verma SS, Rai V, Awasthee N, Chava S, Hui KM, Kumar AP, Challagundla KB, Sethi G, Gupta SC. Long non-coding RNAs are emerging targets of phytochemicals for cancer and other chronic diseases. Cell Mol Life Sci 2019; 76:1947-1966. [PMID: 30879091 PMCID: PMC7775409 DOI: 10.1007/s00018-019-03053-0] [Citation(s) in RCA: 168] [Impact Index Per Article: 33.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2018] [Revised: 02/01/2019] [Accepted: 02/19/2019] [Indexed: 12/18/2022]
Abstract
The long non-coding RNAs (lncRNAs) are the crucial regulators of human chronic diseases. Therefore, approaches such as antisense oligonucleotides, RNAi technology, and small molecule inhibitors have been used for the therapeutic targeting of lncRNAs. During the last decade, phytochemicals and nutraceuticals have been explored for their potential against lncRNAs. The common lncRNAs known to be modulated by phytochemicals include ROR, PVT1, HOTAIR, MALAT1, H19, MEG3, PCAT29, PANDAR, NEAT1, and GAS5. The phytochemicals such as curcumin, resveratrol, sulforaphane, berberine, EGCG, and gambogic acid have been examined against lncRNAs. In some cases, formulation of phytochemicals has also been used. The disease models where phytochemicals have been demonstrated to modulate lncRNAs expression include cancer, rheumatoid arthritis, osteoarthritis, and nonalcoholic fatty liver disease. The regulation of lncRNAs by phytochemicals can affect multi-steps of tumor development. When administered in combination with the conventional drugs, phytochemicals can also produce synergistic effects on lncRNAs leading to the sensitization of cancer cells. Phytochemicals target lncRNAs either directly or indirectly by affecting a wide variety of upstream molecules. However, the potential of phytochemicals against lncRNAs has been demonstrated mostly by preclinical studies in cancer models. How the modulation of lncRNAs by phytochemicals produce therapeutic effects on cancer and other chronic diseases is discussed in this review.
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Affiliation(s)
- Shruti Mishra
- Department of Biochemistry, Institute of Science, Banaras Hindu University, Varanasi, Uttar Pradesh, 221005, India
| | - Sumit S Verma
- Department of Biochemistry, Institute of Science, Banaras Hindu University, Varanasi, Uttar Pradesh, 221005, India
| | - Vipin Rai
- Department of Biochemistry, Institute of Science, Banaras Hindu University, Varanasi, Uttar Pradesh, 221005, India
| | - Nikee Awasthee
- Department of Biochemistry, Institute of Science, Banaras Hindu University, Varanasi, Uttar Pradesh, 221005, India
| | - Srinivas Chava
- Department of Biochemistry and Molecular Biology, and Fred & Pamela Buffett Cancer Center, University of Nebraska Medical Center, Omaha, NE, 68198, USA
| | - Kam Man Hui
- Division of Cellular and Molecular Research, Humphrey Oei Institute of Cancer Research, National Cancer Centre, Singapore, 169610, Singapore
| | - Alan Prem Kumar
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, 117600, Singapore
| | - Kishore B Challagundla
- Department of Biochemistry and Molecular Biology, and Fred & Pamela Buffett Cancer Center, University of Nebraska Medical Center, Omaha, NE, 68198, USA.
| | - Gautam Sethi
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, 117600, Singapore.
| | - Subash C Gupta
- Department of Biochemistry, Institute of Science, Banaras Hindu University, Varanasi, Uttar Pradesh, 221005, India.
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16
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Marques P, Korbonits M. Pseudoacromegaly. Front Neuroendocrinol 2019; 52:113-143. [PMID: 30448536 DOI: 10.1016/j.yfrne.2018.11.001] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/06/2018] [Revised: 10/30/2018] [Accepted: 11/14/2018] [Indexed: 01/19/2023]
Abstract
Individuals with acromegaloid physical appearance or tall stature may be referred to endocrinologists to exclude growth hormone (GH) excess. While some of these subjects could be healthy individuals with normal variants of growth or physical traits, others will have acromegaly or pituitary gigantism, which are, in general, straightforward diagnoses upon assessment of the GH/IGF-1 axis. However, some patients with physical features resembling acromegaly - usually affecting the face and extremities -, or gigantism - accelerated growth/tall stature - will have no abnormalities in the GH axis. This scenario is termed pseudoacromegaly, and its correct diagnosis can be challenging due to the rarity and variability of these conditions, as well as due to significant overlap in their characteristics. In this review we aim to provide a comprehensive overview of pseudoacromegaly conditions, highlighting their similarities and differences with acromegaly and pituitary gigantism, to aid physicians with the diagnosis of patients with pseudoacromegaly.
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Affiliation(s)
- Pedro Marques
- Centre for Endocrinology, William Harvey Research Institute, Barts and the London School of Medicine and Dentistry, Queen Mary University of London, Charterhouse Square, London EC1M 6BQ, UK
| | - Márta Korbonits
- Centre for Endocrinology, William Harvey Research Institute, Barts and the London School of Medicine and Dentistry, Queen Mary University of London, Charterhouse Square, London EC1M 6BQ, UK.
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17
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Tang L, Ding J, Zhou G, Liu Z. LncRNA‑p21 promotes chondrocyte apoptosis in osteoarthritis by acting as a sponge for miR‑451. Mol Med Rep 2018; 18:5295-5301. [PMID: 30272288 DOI: 10.3892/mmr.2018.9506] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2017] [Accepted: 09/11/2018] [Indexed: 11/05/2022] Open
Abstract
Osteoarthritis (OA) is the most common type of arthritis, and remains to be social and medical challenge. Thus, identifying novel molecular targets is important for the prevention and treatment of OA. Long noncoding RNAs (lncRNAs) have been reported to modulate various biological and pathological processes. The aim of the present study was to investigate the role of lncRNA‑p21 in OA and its underlying mechanism, in order to better understand the development of OA and its treatment. Chondrocytes were isolated from cartilage samples obtained from OA and normal patients. Chondrocytes were transfected with microRNA (miRNA/miR)‑451 mimics, miR‑451 inhibitor, pcDNA3.1(+)‑p21 or small interfering RNA‑p21. Flow cytometry was performed to analyze cell apoptosis and reverse transcription‑quantitative polymerase chain reaction was conducted to detect the expression of mRNAs and miRNAs. Cell Counting Kit‑8 assay was performed to detect cell viability. The results revealed that the level of lncRNA‑p21 was significantly upregulated in OA cartilage when compared with the normal cartilage. Silencing of lncRNA‑p21 increased cell viability and inhibited the apoptosis rate of chondrocytes in OA, while lncRNA‑p21 overexpression decreased cell viability and increased the apoptosis rate of chondrocytes in OA. Overexpression of lncRNA‑p21 suppressed the expression of miR‑451 while the silencing of lncRNA‑p21 reversed this effect. MiR‑451 inhibitor effectively inhibited the upregulatory effect of si‑p21 on miR‑451. The increased cell viability and decreased apoptosis rate induced by lncRNA‑p21 silencing was abolished by the miR‑451 inhibitor. MiR‑451 mimic effectively increased the downregulatory effect of pcDNA3.1‑lncRNA‑p21 on miR‑451. The decreased cell viability and increased apoptosis rate induced by the overexpression of lncRNA‑p21 was abolished by the miR‑451 mimic. Investigation into the underlying mechanism revealed that lncRNA‑p21 interacted with miRNA‑451. In addition, lncRNA‑p21 negatively regulated the expression of miR‑451. Furthermore, lncRNA‑p21 promoted the apoptosis of chondrocytes in OA by acting as a sponge for miR‑451. Thus, lncRNA‑p21 was proposed as a promising target for the treatment of OA.
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Affiliation(s)
- Luping Tang
- Department of Emergency Medicine, Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310009, P.R. China
| | - Jianbo Ding
- Department of Emergency Medicine, Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310009, P.R. China
| | - Guangju Zhou
- Department of Emergency Medicine, Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310009, P.R. China
| | - Zhihai Liu
- Department of Emergency Medicine, Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310009, P.R. China
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18
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Liang Z, Ren C. Emodin attenuates apoptosis and inflammation induced by LPS through up-regulating lncRNA TUG1 in murine chondrogenic ATDC5 cells. Biomed Pharmacother 2018; 103:897-902. [DOI: 10.1016/j.biopha.2018.04.085] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2018] [Revised: 04/10/2018] [Accepted: 04/10/2018] [Indexed: 12/31/2022] Open
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19
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He A, Ning Y, Wen Y, Cai Y, Xu K, Cai Y, Han J, Liu L, Du Y, Liang X, Li P, Fan Q, Hao J, Wang X, Guo X, Ma T, Zhang F. Use of integrative epigenetic and mRNA expression analyses to identify significantly changed genes and functional pathways in osteoarthritic cartilage. Bone Joint Res 2018; 7:343-350. [PMID: 29922454 PMCID: PMC5987683 DOI: 10.1302/2046-3758.75.bjr-2017-0284.r1] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Aim Osteoarthritis (OA) is caused by complex interactions between genetic and environmental factors. Epigenetic mechanisms control the expression of genes and are likely to regulate the OA transcriptome. We performed integrative genomic analyses to define methylation-gene expression relationships in osteoarthritic cartilage. Patients and Methods Genome-wide DNA methylation profiling of articular cartilage from five patients with OA of the knee and five healthy controls was conducted using the Illumina Infinium HumanMethylation450 BeadChip (Illumina, San Diego, California). Other independent genome-wide mRNA expression profiles of articular cartilage from three patients with OA and three healthy controls were obtained from the Gene Expression Omnibus (GEO) database. Integrative pathway enrichment analysis of DNA methylation and mRNA expression profiles was performed using integrated analysis of cross-platform microarray and pathway software. Gene ontology (GO) analysis was conducted using the Database for Annotation, Visualization and Integrated Discovery (DAVID). Results We identified 1265 differentially methylated genes, of which 145 are associated with significant changes in gene expression, such as DLX5, NCOR2 and AXIN2 (all p-values of both DNA methylation and mRNA expression < 0.05). Pathway enrichment analysis identified 26 OA-associated pathways, such as mitogen-activated protein kinase (MAPK) signalling pathway (p = 6.25 × 10-4), phosphatidylinositol (PI) signalling system (p = 4.38 × 10-3), hypoxia-inducible factor 1 (HIF-1) signalling pathway (p = 8.63 × 10-3 pantothenate and coenzyme A (CoA) biosynthesis (p = 0.017), ErbB signalling pathway (p = 0.024), inositol phosphate (IP) metabolism (p = 0.025), and calcium signalling pathway (p = 0.032). Conclusion We identified a group of genes and biological pathwayswhich were significantly different in both DNA methylation and mRNA expression profiles between patients with OA and controls. These results may provide new clues for clarifying the mechanisms involved in the development of OA. Cite this article: A. He, Y. Ning, Y. Wen, Y. Cai, K. Xu, Y. Cai, J. Han, L. Liu, Y. Du, X. Liang, P. Li, Q. Fan, J. Hao, X. Wang, X. Guo, T. Ma, F. Zhang. Use of integrative epigenetic and mRNA expression analyses to identify significantly changed genes and functional pathways in osteoarthritic cartilage. Bone Joint Res 2018;7:343–350. DOI: 10.1302/2046-3758.75.BJR-2017-0284.R1.
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Affiliation(s)
- A He
- Key Laboratory of Trace Elements and Endemic Diseases of National Health and Family Planning Commission, School of Public Health, Xi'an Jiaotong University Health Science Center, Xi'an, China
| | - Y Ning
- Key Laboratory of Trace Elements and Endemic Diseases of National Health and Family Planning Commission, School of Public Health, Xi'an Jiaotong University Health Science Center, Xi'an, China
| | - Y Wen
- Key Laboratory of Trace Elements and Endemic Diseases of National Health and Family Planning Commission, School of Public Health, Xi'an Jiaotong University Health Science Center, Xi'an, China
| | - Y Cai
- Department of Orthopaedics, The First Affiliated Hospital, Xi'an Jiaotong University Health Science Center, Xi'an, China
| | - K Xu
- Department of Joint Surgery, Xi'an Hong-Hui Hospital, Xi'an Jiaotong University Health Science Center, Xi'an, China
| | - Y Cai
- Department of Joint Surgery, Xi'an Hong-Hui Hospital, Xi'an Jiaotong University Health Science Center, Xi'an, China
| | - J Han
- Key Laboratory of Trace Elements and Endemic Diseases of National Health and Family Planning Commission, School of Public Health, Xi'an Jiaotong University Health Science Center, Xi'an, China
| | - L Liu
- Key Laboratory of Trace Elements and Endemic Diseases of National Health and Family Planning Commission, School of Public Health, Xi'an Jiaotong University Health Science Center, Xi'an, China
| | - Y Du
- Key Laboratory of Trace Elements and Endemic Diseases of National Health and Family Planning Commission, School of Public Health, Xi'an Jiaotong University Health Science Center, Xi'an, China
| | - X Liang
- Key Laboratory of Trace Elements and Endemic Diseases of National Health and Family Planning Commission, School of Public Health, Xi'an Jiaotong University Health Science Center, Xi'an, China
| | - P Li
- Key Laboratory of Trace Elements and Endemic Diseases of National Health and Family Planning Commission, School of Public Health, Xi'an Jiaotong University Health Science Center, Xi'an, China
| | - Q Fan
- Key Laboratory of Trace Elements and Endemic Diseases of National Health and Family Planning Commission, School of Public Health, Xi'an Jiaotong University Health Science Center, Xi'an, China
| | - J Hao
- Key Laboratory of Trace Elements and Endemic Diseases of National Health and Family Planning Commission, School of Public Health, Xi'an Jiaotong University Health Science Center, Xi'an, China
| | - X Wang
- Key Laboratory of Trace Elements and Endemic Diseases of National Health and Family Planning Commission, School of Public Health, Xi'an Jiaotong University Health Science Center, Xi'an, China
| | - X Guo
- Key Laboratory of Trace Elements and Endemic Diseases of National Health and Family Planning Commission, School of Public Health, Xi'an Jiaotong University Health Science Center, Xi'an, China
| | - T Ma
- Key Laboratory of Trace Elements and Endemic Diseases of National Health and Family Planning Commission, School of Public Health, Xi'an Jiaotong University Health Science Center, Xi'an, China
| | - F Zhang
- Key Laboratory of Trace Elements and Endemic Diseases of National Health and Family Planning Commission, School of Public Health, Xi'an Jiaotong University Health Science Center, Xi'an, China
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20
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Sun J, Wei X, Wang Z, Liu Y, Lu J, Lu Y, Cui M, Zhang X, Li F. Inflammatory milieu cultivated Sema3A signaling promotes chondrocyte apoptosis in knee osteoarthritis. J Cell Biochem 2017; 119:2891-2899. [DOI: 10.1002/jcb.26470] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2017] [Accepted: 10/26/2017] [Indexed: 12/25/2022]
Affiliation(s)
- Jie Sun
- Department of Orthopaedic TraumaTianjin HospitalTianjinChina
| | - Xuelei Wei
- Department of Orthopaedic TraumaTianjin HospitalTianjinChina
| | - Zengliang Wang
- Department of Orthopaedic TraumaTianjin HospitalTianjinChina
| | - Yunjiao Liu
- Department of Orthopaedic TraumaTianjin HospitalTianjinChina
| | - Jie Lu
- Department of Orthopaedic TraumaTianjin HospitalTianjinChina
| | - Yandong Lu
- Department of Orthopaedic TraumaTianjin HospitalTianjinChina
| | - Meng Cui
- Department of Orthopaedic TraumaTianjin HospitalTianjinChina
| | - Xi Zhang
- Department of Orthopaedic TraumaTianjin HospitalTianjinChina
| | - Fangguo Li
- Department of Orthopaedic TraumaTianjin HospitalTianjinChina
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21
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Schwarz S, Mrosewski I, Silawal S, Schulze-Tanzil G. The interrelation of osteoarthritis and diabetes mellitus: considering the potential role of interleukin-10 and in vitro models for further analysis. Inflamm Res 2017; 67:285-300. [PMID: 29196771 DOI: 10.1007/s00011-017-1121-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2017] [Revised: 11/12/2017] [Accepted: 11/24/2017] [Indexed: 12/23/2022] Open
Abstract
INTRODUCTION Today, not only the existence of an interrelation between obesity/adipositas and osteoarthritis (OA) but also the association of OA and diabetes mellitus (DM) are widely recognized. Nevertheless, shared influence factors facilitating OA development in DM patients still remain speculative up until now. To supplement the analysis of clinical data, appropriate in vitro models could help to identify shared pathogenetic pathways. Informative in vitro studies could later be complemented by in vivo data obtained from suitable animal models. MATERIALS AND METHODS Therefore, this detailed review of available literature was undertaken to discuss and compare the results of currently published in vitro studies focusing on the interrelation between OA, the metabolic syndrome and DM and to propose models to further study the molecular pathways. RESULTS The survey of literature presented here supports the hypothesis that the pathogenesis of OA in DM is based on imbalanced molecular pathways with a putative crucial role of antiinflammatory cytokines such as IL-10. CONCLUSION Future development of versatile micro-scaled in vitro models such as combining DM and OA on chip could allow the identification of common pathogenetic pathways and might help to develop novel therapeutic strategies.
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Affiliation(s)
- Silke Schwarz
- Department of Anatomy, Paracelsus Medical University, Prof. Ernst Nathan Str. 1, 90419, Nuremberg, Germany.,Institute of Anatomy, Paracelsus Medical University, Salzburg, Austria
| | - Ingo Mrosewski
- MVZ Limbach Laboratories, Aroser Allee 84, 13407, Berlin, Germany
| | - Sandeep Silawal
- Department of Anatomy, Paracelsus Medical University, Prof. Ernst Nathan Str. 1, 90419, Nuremberg, Germany.,Institute of Anatomy, Paracelsus Medical University, Salzburg, Austria
| | - Gundula Schulze-Tanzil
- Department of Anatomy, Paracelsus Medical University, Prof. Ernst Nathan Str. 1, 90419, Nuremberg, Germany. .,Institute of Anatomy, Paracelsus Medical University, Salzburg, Austria.
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22
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Díaz P, Dimasuay KG, Koele-Schmidt L, Jang B, Barbour LA, Jansson T, Powell TL. Glyburide treatment in gestational diabetes is associated with increased placental glucose transporter 1 expression and higher birth weight. Placenta 2017; 57:52-59. [PMID: 28864019 PMCID: PMC10881120 DOI: 10.1016/j.placenta.2017.05.016] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/24/2017] [Revised: 04/12/2017] [Accepted: 05/27/2017] [Indexed: 12/31/2022]
Abstract
Use of glyburide in gestational diabetes (GDM) has raised concerns about fetal and neonatal side effects, including increased birth weight. Placental nutrient transport is a key determinant of fetal growth, however the effect of glyburide on placental nutrient transporters is largely unknown. We hypothesized that glyburide treatment in GDM pregnancies is associated with increased expression of nutrient transporters in the syncytiotrophoblast plasma membranes. We collected placentas from GDM pregnancies who delivered at term and were treated with either diet modification (n = 15) or glyburide (n = 8). Syncytiotrophoblast microvillous (MVM) and basal (BM) plasma membranes were isolated and expression of glucose (glucose transporter 1; GLUT1), amino acid (sodium-coupled neutral amino acid transporter 2; SNAT2 and L-type amino acid transporter 1; LAT1) and fatty acid (fatty acid translocase; FAT/CD36, fatty acid transporter 2 and 4; FATP2, FATP4) transporters was determined by Western blot. Additionally, we determined GLUT1 expression by confocal microscopy in cultured primary human trophoblasts (PHT) after exposure to glyburide. Birth weight was higher in the glyburide-treated group as compared to diet-treated GDM women (3764 ± 126 g vs. 3386 ± 75 g; p < 0.05). GLUT1 expression was increased in both MVM (+50%; p < 0.01) and BM (+75%; p < 0.01). In contrast, MVM FAT/CD36 (-65%; p = 0.01) and FATP2 (-65%; p = 0.02) protein expression was reduced in mothers treated with glyburide. Glyburide increased membrane expression of GLUT1 in a dose-dependent manner in cultured PHT. This data is the first to show that glyburide increases GLUT1 expression in syncytiotrophoblast MVM and BM in GDM pregnancies, and may promote transplacental glucose delivery contributing to fetal overgrowth.
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Affiliation(s)
- Paula Díaz
- Department of Pediatrics, Section of Neonatology, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA; Department of Obstetrics and Gynecology, University of Texas Health Science Center San Antonio, San Antonio, TX 78229, USA.
| | - Kris Genelyn Dimasuay
- Department of Obstetrics and Gynecology, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA; Department of Medicine at Royal Melbourne Hospital, University of Melbourne, Parkville 3050, Victoria, Australia
| | - Lindsey Koele-Schmidt
- Department of Obstetrics and Gynecology, University of Texas Health Science Center San Antonio, San Antonio, TX 78229, USA
| | - Brian Jang
- Department of Obstetrics and Gynecology, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Linda A Barbour
- Department of Obstetrics and Gynecology, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA; Department of Medicine, Division of Endocrinology, Metabolism, and Diabetes, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Thomas Jansson
- Department of Obstetrics and Gynecology, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Theresa L Powell
- Department of Pediatrics, Section of Neonatology, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA; Department of Obstetrics and Gynecology, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA.
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23
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Corciulo C, Lendhey M, Wilder T, Schoen H, Cornelissen AS, Chang G, Kennedy OD, Cronstein BN. Endogenous adenosine maintains cartilage homeostasis and exogenous adenosine inhibits osteoarthritis progression. Nat Commun 2017; 8:15019. [PMID: 28492224 PMCID: PMC5437286 DOI: 10.1038/ncomms15019] [Citation(s) in RCA: 87] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2016] [Accepted: 02/21/2017] [Indexed: 12/12/2022] Open
Abstract
Osteoarthritis (OA) is characterized by cartilage destruction and chondrocytes have a central role in this process. With age and inflammation chondrocytes have reduced capacity to synthesize and maintain ATP, a molecule important for cartilage homeostasis. Here we show that concentrations of ATP and adenosine, its metabolite, fall after treatment of mouse chondrocytes and rat tibia explants with IL-1β, an inflammatory mediator thought to participate in OA pathogenesis. Mice lacking A2A adenosine receptor (A2AR) or ecto-5′nucleotidase (an enzyme that converts extracellular AMP to adenosine) develop spontaneous OA and chondrocytes lacking A2AR develop an ‘OA phenotype' with increased expression of Mmp13 and Col10a1. Adenosine replacement by intra-articular injection of liposomal suspensions containing adenosine prevents development of OA in rats. These results support the hypothesis that maintaining extracellular adenosine levels is an important homeostatic mechanism, loss of which contributes to the development of OA; targeting adenosine A2A receptors might treat or prevent OA. Osteoarthritis (OA) is a debilitating and destructive joint disease for which disease modifying drugs are not available. Here the authors show that extracellular adenosine signalling via the A2AR receptor on chondrocytes is needed to prevent OA and that liposome-bound adenosine injection can treat the pathology in rats.
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Affiliation(s)
- Carmen Corciulo
- Department of Medicine-Division of Translational Medicine-NYU School of Medicine, 550 First Avenue, New York, New York 10016, USA
| | - Matin Lendhey
- Department of Orthopedic Surgery-NYU School of Medicine, 550 First Avenue, New York, New York 10016, USA
| | - Tuere Wilder
- Department of Medicine-Division of Translational Medicine-NYU School of Medicine, 550 First Avenue, New York, New York 10016, USA
| | - Hanna Schoen
- Department of Medicine-Division of Translational Medicine-NYU School of Medicine, 550 First Avenue, New York, New York 10016, USA
| | - Alexander Samuel Cornelissen
- Department of Medicine-Division of Translational Medicine-NYU School of Medicine, 550 First Avenue, New York, New York 10016, USA
| | - Gregory Chang
- Department of Radiology-NYU School of Medicine, 550 First Avenue, New York, New York 10016, USA
| | - Oran D Kennedy
- Department of Orthopedic Surgery-NYU School of Medicine, 550 First Avenue, New York, New York 10016, USA.,Department of Anatomy, the Royal College of Surgeons in Ireland, 123 St Stephens Green, Dublin 2, Ireland
| | - Bruce N Cronstein
- Department of Medicine-Division of Translational Medicine-NYU School of Medicine, 550 First Avenue, New York, New York 10016, USA.,Department of Medicine-Division of Rheumatology-NYU School of Medicine, 550 First Avenue, New York, New York 10016, USA
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24
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Garessus EDG, de Mutsert R, Visser AW, Rosendaal FR, Kloppenburg M. No association between impaired glucose metabolism and osteoarthritis. Osteoarthritis Cartilage 2016; 24:1541-7. [PMID: 27084351 DOI: 10.1016/j.joca.2016.04.007] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/21/2015] [Revised: 03/21/2016] [Accepted: 04/04/2016] [Indexed: 02/02/2023]
Abstract
OBJECTIVE To investigate the association between markers of glucose metabolism and hand and knee osteoarthritis (OA). METHODS This is a cross-sectional analysis of baseline measurements of the Netherlands Epidemiology of Obesity (NEO) study, a population-based prospective cohort study. Fasting glucose, insulin and glycated hemoglobulin A1c (HbA1c) concentrations were measured, Homeostasis Model Assessment for Insulin Resistance (HOMA-IR) was calculated and clinical OA was defined following the American College of Rheumatology (ACR) criteria. After exclusion of participants on glucose-lowering drugs, odds ratios (ORs) with 95% confidence intervals (CIs) for either hand, knee or both hand and knee OA were calculated (no OA as reference), as a function of each marker of glucose metabolism, with logistic regression analyses. Models were adjusted for age, ethnicity, education, height, weight and total body fat, and stratified by sex. RESULTS In 6197 participants (age 45-65 years, 56% women, mean body mass index (BMI) 26 kg/m(2)), prevalences of hand OA, knee OA or both were 7%, 10% or 4%, respectively. In men, the adjusted OR (95%CI) for hand OA was 1.18 (1.01-1.39) per standard deviation (SD) increase in plasma glucose (0.85 mmol/L). There were no further associations of glucose, HbA1c, insulin and HOMA-IR with the different types of OA, neither in men nor in women. CONCLUSION An impaired glucose metabolism does not seem be related to OA. In men, an association was observed for fasting glucose concentrations and hand OA. Future studies should investigate the presence of sex differences in the pathogenesis of hand OA.
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Affiliation(s)
- E D G Garessus
- Department of Rheumatology, Leiden University Medical Center, C1-R, P.O. Box 9600, Leiden 2300 RC, The Netherlands.
| | - R de Mutsert
- Department of Clinical Epidemiology, Leiden University Medical Center, C7-P, P.O. Box 9600, Leiden 2300 RC, The Netherlands.
| | - A W Visser
- Department of Rheumatology, Leiden University Medical Center, C1-R, P.O. Box 9600, Leiden 2300 RC, The Netherlands.
| | - F R Rosendaal
- Department of Clinical Epidemiology, Leiden University Medical Center, C7-P, P.O. Box 9600, Leiden 2300 RC, The Netherlands; Department of Thrombosis and Hemostasis, Leiden University Medical Center, C7-P, P.O. Box 9600, Leiden 2300 RC, The Netherlands.
| | - M Kloppenburg
- Department of Rheumatology, Leiden University Medical Center, C1-R, P.O. Box 9600, Leiden 2300 RC, The Netherlands; Department of Clinical Epidemiology, Leiden University Medical Center, C7-P, P.O. Box 9600, Leiden 2300 RC, The Netherlands.
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Lewis R, Barrett-Jolley R. Changes in Membrane Receptors and Ion Channels as Potential Biomarkers for Osteoarthritis. Front Physiol 2015; 6:357. [PMID: 26648874 PMCID: PMC4664663 DOI: 10.3389/fphys.2015.00357] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2015] [Accepted: 11/11/2015] [Indexed: 01/01/2023] Open
Abstract
Osteoarthritis (OA), a degenerative joint condition, is currently difficult to detect early enough for any of the current treatment options to be completely successful. Early diagnosis of this disease could increase the numbers of patients who are able to slow its progression. There are now several diseases where membrane protein biomarkers are used for early diagnosis. The numbers of proteins in the membrane is vast and so it is a rich source of potential biomarkers for OA but we need more knowledge of these before they can be considered practical biomarkers. How are they best measured and are they selective to OA or even certain types of OA? The first step in this process is to identify membrane proteins that change in OA. Here, we summarize several ion channels and receptors that change in OA models and/or OA patients, and may thus be considered candidates as novel membrane biomarkers of OA.
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Affiliation(s)
- Rebecca Lewis
- Faculty of Health and Medical Sciences, School of Veterinary Medicine and Science, University of Surrey Guildford, UK
| | - Richard Barrett-Jolley
- Department of Musculoskeletal Biology, Faculty of Health and Life Sciences, Institute of Ageing and Chronic Disease, University of Liverpool Liverpool, UK
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King K, Rosenthal A. The adverse effects of diabetes on osteoarthritis: update on clinical evidence and molecular mechanisms. Osteoarthritis Cartilage 2015; 23:841-50. [PMID: 25837996 PMCID: PMC5530368 DOI: 10.1016/j.joca.2015.03.031] [Citation(s) in RCA: 73] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/14/2014] [Revised: 03/02/2015] [Accepted: 03/16/2015] [Indexed: 02/02/2023]
Abstract
Projected increases in the prevalence of both diabetes mellitus (DM) and osteoarthritis (OA) ensure their common co-existence. In an era of increasing attention to personalized medicine, understanding the influence of common comorbidities such as DM should result in improved care of patients with OA. In this narrative review, we summarize the literature addressing the interactions between DM and OA spanning the years from 1962 to 2014. We separated studies depending on whether they investigated clinical populations, animal models, or cells and tissues. The clinical literature addressing the influence of DM on OA and its therapeutic outcomes suggests that DM may augment the development and severity of OA and that DM increases risks associated with joint replacement surgery. The few high quality studies using animal models also support an adverse effect of DM on OA. We review strengths and weaknesses of the common rodent models of DM. The heterogeneous literature derived from studies of articular cells and tissues also supports the existence of biochemical and biomechanical changes in articular tissues in DM, and begins to characterize molecular mechanisms activated in diabetic-like environs which may contribute to OA. Increasing evidence from the clinic and the laboratory supports an adverse effect of DM on the development, severity, and therapeutic outcomes for OA. To understand the mechanisms through which DM contributes to OA, further studies are clearly necessary. Future studies of DM-influenced mechanisms may shed light on general mechanisms of OA pathogenesis and result in more specific and effective therapies for all OA patients.
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Affiliation(s)
- K.B. King
- Department of Orthopaedics, University of Colorado School of Medicine, Aurora, CO, USA,Surgical Service, Orthopaedic Service, Eastern Colorado Health Care System, Veterans Affairs, Denver, CO, USA
| | - A.K. Rosenthal
- Department of Medicine, Medical College of Wisconsin, Milwaukee, WI, USA,Medicine Service, Rheumatology Service, The Clement J. Zablocki Medical Center, Veterans Affairs, Milwaukee, WI, USA,Address correspondence and reprint requests to: A.K. Rosenthal, Zablocki VA Medical Center, 5000 W. National Avenue, Milwaukee, WI 53295-1000, USA. Tel: 1-(414)-955-7027; Fax: 1-(414)-955-6205
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Chondrosenescence: definition, hallmarks and potential role in the pathogenesis of osteoarthritis. Maturitas 2014; 80:237-44. [PMID: 25637957 DOI: 10.1016/j.maturitas.2014.12.003] [Citation(s) in RCA: 141] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2014] [Accepted: 12/06/2014] [Indexed: 01/07/2023]
Abstract
Aging and inflammation are major contributing factors to the development and progression of arthritic and musculoskeletal diseases. "Inflammaging" refers to low-grade inflammation that occurs during physiological aging. In this paper we review the published literature on cartilage aging and propose the term "chondrosenescence" to define the age-dependent deterioration of chondrocyte function and how it undermines cartilage function in osteoarthritis. We propose the concept that a small number of senescent chondrocytes may be able to take advantage of the inflammatory tissue microenvironment and the inflammaging and immunosenescence that is concurrently occurring in the arthritic joint, further contributing to the age-related degradation of articular cartilage, subchondral bone, synovium and other tissues. In this new framework "chondrosenescence" is intimately linked with inflammaging and the disturbed interplay between autophagy and inflammasomes, thus contributing to the age-related increase in the prevalence of osteoarthritis and a decrease in the efficacy of articular cartilage repair. A better understanding of the basic mechanisms underlying chondrosenescence and its modification by drugs, weight loss, improved nutrition and physical exercise could lead to the development of new therapeutic and preventive strategies for osteoarthritis and a range of other age-related inflammatory joint diseases. Aging is inevitable but age-related diseases may be modifiable.
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Cooper PE, Reutter H, Woelfle J, Engels H, Grange DK, van Haaften G, van Bon BW, Hoischen A, Nichols CG. Cantú syndrome resulting from activating mutation in the KCNJ8 gene. Hum Mutat 2014; 35:809-13. [PMID: 24700710 DOI: 10.1002/humu.22555] [Citation(s) in RCA: 86] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2014] [Accepted: 03/21/2014] [Indexed: 12/21/2022]
Abstract
ATP-sensitive potassium (KATP ) channels, composed of inward-rectifying potassium channel subunits (Kir6.1 and Kir6.2, encoded by KCNJ8 and KCNJ11, respectively) and regulatory sulfonylurea receptor (SUR1 and SUR2, encoded by ABCC8 and ABCC9, respectively), couple metabolism to excitability in multiple tissues. Mutations in ABCC9 cause Cantú syndrome (CS), a distinct multiorgan disease, potentially via enhanced KATP channel activity. We screened KCNJ8 in an ABCC9 mutation-negative patient who also exhibited clinical hallmarks of CS (hypertrichosis, macrosomia, macrocephaly, coarse facial appearance, cardiomegaly, and skeletal abnormalities). We identified a de novo missense mutation encoding Kir6.1[p.Cys176Ser] in the patient. Kir6.1[p.Cys176Ser] channels exhibited markedly higher activity than wild-type channels, as a result of reduced ATP sensitivity, whether coexpressed with SUR1 or SUR2A subunits. Our results identify a novel causal gene in CS, but also demonstrate that the cardinal features of the disease result from gain of KATP channel function, not from a Kir6-independent SUR2 function.
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Affiliation(s)
- Paige E Cooper
- Department of Cell Biology and Physiology, and Center for the Investigation of Membrane Excitability Diseases, Washington University School of Medicine, St. Louis, Missouri
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Tardio L, Andrés-Bergós J, Zachara NE, Larrañaga-Vera A, Rodriguez-Villar C, Herrero-Beaumont G, Largo R. O-linked N-acetylglucosamine (O-GlcNAc) protein modification is increased in the cartilage of patients with knee osteoarthritis. Osteoarthritis Cartilage 2014; 22:259-63. [PMID: 24333294 DOI: 10.1016/j.joca.2013.12.001] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/09/2013] [Revised: 11/18/2013] [Accepted: 12/04/2013] [Indexed: 02/02/2023]
Abstract
OBJECTIVE There is increasing evidence that the addition of O-linked N-acetylglucosamine (O-GlcNAc) to proteins plays an important role in cell signaling pathways. In chondrocytes, accumulation of O-GlcNAc-modified proteins induces hypertrophic differentiation. Osteoarthritis (OA) is characterized by cartilage degradation, and hypertrophic-like changes in hyaline chondrocytes. However, the mechanisms responsible for these changes have not been described. Our aim was to study whether O-GlcNAcylation and the enzymes responsible for this modification are dysregulated in the cartilage of patients with knee OA and whether interleukin-1 could induce these modifications in cultured human OA chondrocytes (HOC). DESIGN Human cartilage was obtained from patients with knee OA and from age and sex-matched healthy donors. HOC were cultured and stimulated with the catabolic cytokine IL-1α. Global protein O-GlcNAcylation and the synthesis of the key enzymes responsible for this modification, O-GlcNAc transferase (OGT) and O-GlcNAcase (OGA), were assessed by western blot. RESULTS OA was associated with a 4-fold increase in the global O-GlcNAcylation in the cartilage. OA cartilage showed a re-distribution of the OGT and OGA isoforms, with a net increase in the presence of both enzymes, in comparison to healthy cartilage. In HOC, IL-1α stimulation rapidly increased O-GlcNAcylation and OGT and OGA synthesis. CONCLUSIONS Our results indicate that a proinflammatory milieu could favor the accumulation of O-GlcNAcylated proteins in OA cartilage, together with the dysregulation of the enzymes responsible for this modification. The increase in O-GlcNAcylation could be responsible, at least partially, for the re-expression of hypertrophic differentiation markers that have been observed in OA.
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Affiliation(s)
- L Tardio
- Bone and Joint Research Unit, Instituto de Investigación Sanitaria Fundación Jiménez Díaz, Madrid, Spain
| | - J Andrés-Bergós
- Bone and Joint Research Unit, Instituto de Investigación Sanitaria Fundación Jiménez Díaz, Madrid, Spain
| | - N E Zachara
- Department of Biological Chemistry, The Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - A Larrañaga-Vera
- Bone and Joint Research Unit, Instituto de Investigación Sanitaria Fundación Jiménez Díaz, Madrid, Spain
| | - C Rodriguez-Villar
- Donation Unit, Transplant Services Foundation, Hospital Clinic, Barcelona, Spain
| | - G Herrero-Beaumont
- Bone and Joint Research Unit, Instituto de Investigación Sanitaria Fundación Jiménez Díaz, Madrid, Spain
| | - R Largo
- Bone and Joint Research Unit, Instituto de Investigación Sanitaria Fundación Jiménez Díaz, Madrid, Spain.
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