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Yang B, Ma D, Zhu X, Wu Z, An Q, Zhao J, Gao X, Zhang L. Roles of TRP and PIEZO receptors in autoimmune diseases. Expert Rev Mol Med 2024; 26:e10. [PMID: 38659380 PMCID: PMC11140548 DOI: 10.1017/erm.2023.23] [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: 01/31/2023] [Revised: 04/15/2023] [Accepted: 08/21/2023] [Indexed: 04/26/2024]
Abstract
Autoimmune diseases are pathological autoimmune reactions in the body caused by various factors, which can lead to tissue damage and organ dysfunction. They can be divided into organ-specific and systemic autoimmune diseases. These diseases usually involve various body systems, including the blood, muscles, bones, joints and soft tissues. The transient receptor potential (TRP) and PIEZO receptors, which resulted in David Julius and Ardem Patapoutian winning the Nobel Prize in Physiology or Medicine in 2021, attracted people's attention. Most current studies on TRP and PIEZO receptors in autoimmune diseases have been carried out on animal model, only few clinical studies have been conducted. Therefore, this study aimed to review existing studies on TRP and PIEZO to understand the roles of these receptors in autoimmune diseases, which may help elucidate novel treatment strategies.
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Affiliation(s)
- Baoqi Yang
- Third Hospital of Shanxi Medical University, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Tongji Shanxi Hospital, Taiyuan 030032, China
| | - Dan Ma
- Third Hospital of Shanxi Medical University, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Tongji Shanxi Hospital, Taiyuan 030032, China
| | - Xueqing Zhu
- Third Hospital of Shanxi Medical University, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Tongji Shanxi Hospital, Taiyuan 030032, China
| | - Zewen Wu
- Third Hospital of Shanxi Medical University, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Tongji Shanxi Hospital, Taiyuan 030032, China
| | - Qi An
- Third Hospital of Shanxi Medical University, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Tongji Shanxi Hospital, Taiyuan 030032, China
| | - Jingwen Zhao
- Third Hospital of Shanxi Medical University, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Tongji Shanxi Hospital, Taiyuan 030032, China
| | - Xinnan Gao
- Third Hospital of Shanxi Medical University, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Tongji Shanxi Hospital, Taiyuan 030032, China
| | - Liyun Zhang
- Third Hospital of Shanxi Medical University, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Tongji Shanxi Hospital, Taiyuan 030032, China
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2
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Liao Z, Umar M, Huang X, Qin L, Xiao G, Chen Y, Tong L, Chen D. Transient receptor potential vanilloid 1: A potential therapeutic target for the treatment of osteoarthritis and rheumatoid arthritis. Cell Prolif 2024; 57:e13569. [PMID: 37994506 PMCID: PMC10905355 DOI: 10.1111/cpr.13569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2023] [Revised: 10/11/2023] [Accepted: 10/15/2023] [Indexed: 11/24/2023] Open
Abstract
This study aims to determine the molecular mechanisms and analgesic effects of transient receptor potential vanilloid 1 (TRPV1) in the treatments of osteoarthritis (OA) and rheumatoid arthritis (RA). We summarize and analyse current studies regarding the biological functions and mechanisms of TRPV1 in arthritis. We search and analyse the related literature in Google Scholar, Web of Science and PubMed databases from inception to September 2023 through the multi-combination of keywords like 'TRPV1', 'ion channel', 'osteoarthritis', 'rheumatoid arthritis' and 'pain'. TRPV1 plays a crucial role in regulating downstream gene expression and maintaining cellular function and homeostasis, especially in chondrocytes, synovial fibroblasts, macrophages and osteoclasts. In addition, TRPV1 is located in sensory nerve endings and plays an important role in nerve sensitization, defunctionalization or central sensitization. TRPV1 is a non-selective cation channel protein. Extensive evidence in recent years has established the significant involvement of TRPV1 in the development of arthritis pain and inflammation, positioning it as a promising therapeutic target for arthritis. TRPV1 likely represents a feasible therapeutic target for the treatment of OA and RA.
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Affiliation(s)
- Zhidong Liao
- Department of Bone and Joint Surgerythe First Affiliated Hospital of Guangxi Medical UniversityNanningChina
- Research Center for Computer‐aided Drug Discovery, Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhenChina
- Faculty of Pharmaceutical SciencesShenzhen Institute of Advanced TechnologyShenzhenChina
- Collaborative Innovation Centre of Regenerative Medicine and Medical BioResource Development and Application Co‐constructed by the Province and MinistryGuangxi Medical UniversityNanningGuangxiChina
| | - Muhammad Umar
- Research Center for Computer‐aided Drug Discovery, Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhenChina
- Faculty of Pharmaceutical SciencesShenzhen Institute of Advanced TechnologyShenzhenChina
| | - Xingyun Huang
- Research Center for Computer‐aided Drug Discovery, Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhenChina
- Faculty of Pharmaceutical SciencesShenzhen Institute of Advanced TechnologyShenzhenChina
| | - Ling Qin
- Musculoskeletal Research Laboratory of Department of Orthopaedics & Traumatology and Innovative Orthopaedic Biomaterial & Drug Translational Research LaboratoryLi Ka Shing Institute of Health Sciences, The Chinese University of Hong KongHong KongChina
| | - Guozhi Xiao
- School of MedicineSouthern University of Science and TechnologyShenzhenChina
| | - Yan Chen
- Department of Bone and Joint Surgerythe First Affiliated Hospital of Guangxi Medical UniversityNanningChina
| | - Liping Tong
- Research Center for Computer‐aided Drug Discovery, Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhenChina
| | - Di Chen
- Research Center for Computer‐aided Drug Discovery, Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhenChina
- Faculty of Pharmaceutical SciencesShenzhen Institute of Advanced TechnologyShenzhenChina
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3
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Mohsen ROM, Hassan R. A comparative study of the therapeutic effect of bone marrow mesenchymal stem cells versus insulin on mandibular dento-alveolar complex collagen formation and beta-catenin expression in experimentally induced type I diabetes. Saudi Dent J 2023; 35:668-677. [PMID: 37817792 PMCID: PMC10562111 DOI: 10.1016/j.sdentj.2023.05.020] [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: 01/31/2023] [Revised: 05/09/2023] [Accepted: 05/24/2023] [Indexed: 10/12/2023] Open
Abstract
Objective To assess and compare the therapeutic effect of bone marrow mesenchymal stem cells (BM-MSCs) versus insulin on mandibular dento-alveolar complex collagen formation and beta-catenin (β-catenin) expression in experimentally induced type I diabetes in albino rat. Design Twenty-eight male albino rats were equally divided as follows; Group I: was composed of rats which received no drug. The remaining rats were administrated a single streptozotocin (STZ) (40 mg/kg) intra-peritoneal injection. After affirmation of diabetes induction, the rats were divided into: Group II: Diabetic rats were given no treatment. Group III: Diabetic rats received a single BM-MSCs intravenous injection (1x106 cells). Group IV: Diabetic rats were given a daily insulin subcutaneous injection (5 IU/kg). After 28 days, mandibles were processed and stained by Hematoxylin & Eosin (H&E), Masson's trichrome and anti-β-catenin antibody. A statistical analysis was performed to measure positive area% of Masson's trichrome and β-catenin. Results Dento-alveolar complex tissues and cells of Group II showed destructive changes histologically, while Groups III and IV demonstrated improved histological features. Group II presented almost old collagen in all dento-alveolar complex tissues, and nearly negative β-catenin expression. Groups III and IV revealed a newly formed collagen intermingled with very few areas of old collagen, and both groups showed positive β-catenin immunoreactivity. Statistically, Groups III and IV represented the highest mean values of Masson's trichrome area% and β-catenin area%, while Group II reported the lowest mean. Conclusions Streptozotocin has a destructive effect on the dento-alveolar complex structure and function. BM-MSCs and insulin show regenerative capacity in STZ-affected periodontal tissues, and statistically, they increase collagen formation and β-catenin expression.
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Affiliation(s)
| | - Rabab Hassan
- Associate professor of Oral Biology, Faculty of Dentistry, Ain Shams University, Cairo, Egypt
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4
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Klabklai P, Phetfong J, Tangporncharoen R, Isarankura-Na-Ayudhya C, Tawonsawatruk T, Supokawej A. Annexin A2 Improves the Osteogenic Differentiation of Mesenchymal Stem Cells Exposed to High-Glucose Conditions through Lessening the Senescence. Int J Mol Sci 2022; 23:ijms232012521. [PMID: 36293376 PMCID: PMC9604334 DOI: 10.3390/ijms232012521] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Revised: 10/06/2022] [Accepted: 10/13/2022] [Indexed: 11/16/2022] Open
Abstract
Osteoporosis is frequently found in chronic diabetic patients, and it results in an increased risk of bone fractures occurring. The underlying mechanism of osteoporosis in diabetic patients is still largely unknown. Annexin A2 (ANXA2), a family of calcium-binding proteins, has been reported to be involved in many biological process including bone remodeling. This study aimed to investigate the role of ANXA2 in mesenchymal stem cells (MSCs) during in vitro osteoinduction under high-glucose concentrations. Osteogenic gene expression, calcium deposition, and cellular senescence were determined. The high-glucose conditions reduced the osteogenic differentiation potential of the MSCs along with the lower expression of ANXA2. Moreover, the high-glucose conditions increased the cellular senescence of the MSCs as determined by senescence-associated β-galactosidase staining and the expression of p16, p21, and p53 genes. The addition of recombinant ANXA2 could recover the glucose-induced deterioration of the osteogenic differentiation of the MSCs and ameliorate the glucose-induced cellular senescence of the MSCs. A Western blot analysis revealed an increase in p53 and phosphorylated p53 (Ser 15), which was decreased by recombinant ANXA2 in MSC osteoblastic differentiation under high-glucose conditions. Our study suggested that the alteration of ANXA2 in high-glucose conditions may be one of the plausible factors in the deterioration of bones in diabetic patients by triggering cellular senescence.
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Affiliation(s)
- Parin Klabklai
- Department of Clinical Microscopy, Faculty of Medical Technology, Mahidol University, Nakhonpathom 73170, Thailand
| | - Jitrada Phetfong
- Department of Clinical Microscopy, Faculty of Medical Technology, Mahidol University, Nakhonpathom 73170, Thailand
| | - Rattanawan Tangporncharoen
- Department of Clinical Microscopy, Faculty of Medical Technology, Mahidol University, Nakhonpathom 73170, Thailand
| | - Chartchalerm Isarankura-Na-Ayudhya
- Department of Clinical Microbiology and Applied Technology, Faculty of Medical Technology, Mahidol University, Nakhonpathom 73170, Thailand
| | - Tulyapruek Tawonsawatruk
- Department of Orthopaedics, Faculty of Medicine, Ramathibodi Hospital, Mahidol University, Bangkok 10400, Thailand
| | - Aungkura Supokawej
- Department of Clinical Microscopy, Faculty of Medical Technology, Mahidol University, Nakhonpathom 73170, Thailand
- Correspondence: ; Fax: +66-2-441-4380
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5
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Hypoxia mimetics restore bone biomineralisation in hyperglycaemic environments. Sci Rep 2022; 12:13944. [PMID: 35977987 PMCID: PMC9385857 DOI: 10.1038/s41598-022-18067-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Accepted: 08/04/2022] [Indexed: 11/08/2022] Open
Abstract
Diabetic patients have an increased risk of fracture and an increased occurrence of impaired fracture healing. Diabetic and hyperglycaemic conditions have been shown to impair the cellular response to hypoxia, via an inhibited hypoxia inducible factor (HIF)-1α pathway. We investigated, using an in vitro hyperglycaemia bone tissue engineering model (and a multidisciplinary bone characterisation approach), the differing effects of glucose levels, hypoxia and chemicals known to stabilise HIF-1α (CoCl2 and DMOG) on bone formation. Hypoxia (1% O2) inhibited bone nodule formation and resulted in discrete biomineralisation as opposed to the mineralised extracellular collagen fibres found in normoxia (20% O2). Unlike hypoxia, the use of hypoxia mimetics did not prevent nodule formation in normal glucose level. Hyperglycaemic conditions (25 mM and 50 mM glucose) inhibited biomineralisation. Interestingly, both hypoxia mimetics (CoCl2 and DMOG) partly restored hyperglycaemia inhibited bone nodule formation. These results highlight the difference in osteoblast responses between hypoxia mimetics and actual hypoxia and suggests a role of HIF-1α stabilisation in bone biomineralisation that extends that of promoting neovascularisation, or other system effects associated with hypoxia and bone regeneration in vivo. This study demonstrates that targeting the HIF pathway may represent a promising strategy for bone regeneration in diabetic patients.
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6
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Tian Y, Ming J. Melatonin inhibits osteoclastogenesis via RANKL/OPG suppression mediated by Rev-Erbα in osteoblasts. J Cell Mol Med 2022; 26:4032-4047. [PMID: 35726597 PMCID: PMC9279587 DOI: 10.1111/jcmm.17440] [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] [Received: 01/31/2022] [Revised: 05/21/2022] [Accepted: 05/27/2022] [Indexed: 12/11/2022] Open
Abstract
Diabetic osteoporosis is secondary osteoporosis and a serious complication of diabetes with a high incidence rate and poor prognosis. The specific mechanism of diabetic osteoporosis is unclear, and prevention and treatment options are limited. Recently, melatonin has been found to prevent and treat diabetic osteoporosis. Herein, we investigated the mechanism whereby melatonin inhibits osteoclastogenesis and identified a new target for osteoporosis treatment. We established an in vitro osteoblast–osteoclast co‐culture system as a diabetic osteoporosis model. Osteoclastogenesis was determined using tartrate‐resistant acid phosphatase staining and cathepsin K expression. Real‐time PCR was used to ascertain expression of microRNA mir‐882, targeting Rev‐Erbα. Western blotting was performed to detect the expression of Rev‐Erbα, receptor activator of NF‐kB ligand (RANKL), and osteoprotegerin (OPG), and ELISA was utilized to analyse the secreted form of RANKL. High glucose promoted osteoclastogenesis and elevated the RANKL/OPG ratio in osteoblasts, while melatonin reversed these effects. High glucose inhibited Rev‐Erbα expression, while melatonin promoted its expression. Conversely, high glucose promoted mir‐882 expression, while melatonin inhibited it. We infer that melatonin inhibits RANKL expression in osteoblasts via the mir‐882/Rev‐Erbα axis, thus inhibiting osteoclastogenesis. Our findings provide insights into diabetic osteoporosis and identify a new therapeutic target for osteoporosis.
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Affiliation(s)
- Yihao Tian
- Department of Pathology, General Hospital of Northern Theater Command, Shenyang, China
| | - Jian Ming
- Department of Pathology, General Hospital of Northern Theater Command, Shenyang, China
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7
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Chakraborty R, Acharya TK, Tiwari N, Majhi RK, Kumar S, Goswami L, Goswami C. Hydrogel-Mediated Release of TRPV1 Modulators to Fine Tune Osteoclastogenesis. ACS OMEGA 2022; 7:9537-9550. [PMID: 35350319 PMCID: PMC8945112 DOI: 10.1021/acsomega.1c06915] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/07/2021] [Accepted: 02/01/2022] [Indexed: 06/14/2023]
Abstract
Bone defects, including bone loss due to increased osteoclast activity, have become a global health-related issue. Osteoclasts attach to the bone matrix and resorb the same, playing a vital role in bone remodeling. Ca2+ homeostasis plays a pivotal role in the differentiation and maturation of osteoclasts. In this work, we examined the role of TRPV1, a nonselective cation channel, in osteoclast function and differentiation. We demonstrate that endogenous TRPV1 is functional and causes Ca2+ influx upon activation with pharmacological activators [resiniferatoxin (RTX) and capsaicin] at nanomolar concentration, which enhances the generation of osteoclasts, whereas the TRPV1 inhibitor (5'-IRTX) reduces osteoclast differentiation. Activation of TRPV1 upregulates tartrate-resistant acid phosphatase activity and the expression of cathepsin K and calcitonin receptor genes, whereas TRPV1 inhibition reverses this effect. The slow release of capsaicin or RTX at a nanomolar concentration from a polysaccharide-based hydrogel enhances bone marrow macrophage (BMM) differentiation into osteoclasts whereas release of 5'-IRTX, an inhibitor of TRPV1, prevents macrophage fusion and osteoclast formation. We also characterize several subcellular parameters, including reactive oxygen (ROS) and nitrogen (RNS) species in the cytosol, mitochondrial, and lysosomal profiles in BMMs. ROS were found to be unaltered upon TRPV1 modulation. NO, however, had elevated levels upon RTX-mediated TRPV1 activation. Capsaicin altered mitochondrial membrane potential (ΔΨm) of BMMs but not 5'-IRTX. Channel modulation had no significant impact on cytosolic pH but significantly altered the pH of lysosomes, making these organelles less acidic. Since BMMs are precursors for osteoclasts, our findings of the cellular physiology of these cells may have broad implications in understanding the role of thermosensitive ion channels in bone formation and functions, and the TRPV1 modulator-releasing hydrogel may have application in bone tissue engineering and other biomedical sectors.
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Affiliation(s)
- Ranabir Chakraborty
- School
of Biological Sciences, National Institute
of Science Education and Research Bhubaneswar, P.O. Jatni, Khurda, Odisha 752050, India
| | - Tusar Kanta Acharya
- School
of Biological Sciences, National Institute
of Science Education and Research Bhubaneswar, P.O. Jatni, Khurda, Odisha 752050, India
- Homi
Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai 400094, India
| | - Nikhil Tiwari
- School
of Biological Sciences, National Institute
of Science Education and Research Bhubaneswar, P.O. Jatni, Khurda, Odisha 752050, India
- Homi
Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai 400094, India
| | - Rakesh Kumar Majhi
- School
of Biological Sciences, National Institute
of Science Education and Research Bhubaneswar, P.O. Jatni, Khurda, Odisha 752050, India
- Homi
Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai 400094, India
| | - Satish Kumar
- School
of Biotechnology, Kalinga Institute of Industrial
Technology (KIIT), Deemed to be University, Bhubaneswar, Odisha 751024, India
| | - Luna Goswami
- School
of Biotechnology, Kalinga Institute of Industrial
Technology (KIIT), Deemed to be University, Bhubaneswar, Odisha 751024, India
- School of
Chemical Technology, Kalinga Institute of Industrial Technology (KIIT), Deemed to be University, Bhubaneswar, Odisha 751024, India
| | - Chandan Goswami
- School
of Biological Sciences, National Institute
of Science Education and Research Bhubaneswar, P.O. Jatni, Khurda, Odisha 752050, India
- Homi
Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai 400094, India
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8
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Imenez Silva PH, Wagner CA. Physiological relevance of proton-activated GPCRs. Pflugers Arch 2022; 474:487-504. [PMID: 35247105 PMCID: PMC8993716 DOI: 10.1007/s00424-022-02671-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Revised: 02/07/2022] [Accepted: 02/08/2022] [Indexed: 12/12/2022]
Abstract
The detection of H+ concentration variations in the extracellular milieu is accomplished by a series of specialized and non-specialized pH-sensing mechanisms. The proton-activated G protein–coupled receptors (GPCRs) GPR4 (Gpr4), TDAG8 (Gpr65), and OGR1 (Gpr68) form a subfamily of proteins capable of triggering intracellular signaling in response to alterations in extracellular pH around physiological values, i.e., in the range between pH 7.5 and 6.5. Expression of these receptors is widespread for GPR4 and OGR1 with particularly high levels in endothelial cells and vascular smooth muscle cells, respectively, while expression of TDAG8 appears to be more restricted to the immune compartment. These receptors have been linked to several well-studied pH-dependent physiological activities including central control of respiration, renal adaption to changes in acid–base status, secretion of insulin and peripheral responsiveness to insulin, mechanosensation, and cellular chemotaxis. Their role in pathological processes such as the genesis and progression of several inflammatory diseases (asthma, inflammatory bowel disease), and tumor cell metabolism and invasiveness, is increasingly receiving more attention and makes these receptors novel and interesting targets for therapy. In this review, we cover the role of these receptors in physiological processes and will briefly discuss some implications for disease processes.
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Affiliation(s)
- Pedro H Imenez Silva
- Institute of Physiology, University of Zurich, Winterthurerstrasse 190, CH-8057, Zurich, Switzerland. .,National Center of Competence in Research NCCR Kidney.CH, Zurich, Switzerland.
| | - Carsten A Wagner
- Institute of Physiology, University of Zurich, Winterthurerstrasse 190, CH-8057, Zurich, Switzerland. .,National Center of Competence in Research NCCR Kidney.CH, Zurich, Switzerland.
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9
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Toor SM, Wani S, Albagha OME. Comprehensive Transcriptomic Profiling of Murine Osteoclast Differentiation Reveals Novel Differentially Expressed Genes and LncRNAs. Front Genet 2021; 12:781272. [PMID: 34868271 PMCID: PMC8634834 DOI: 10.3389/fgene.2021.781272] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Accepted: 10/22/2021] [Indexed: 01/11/2023] Open
Abstract
Osteoclasts are the sole bone resorbing cells, which undertake opposing roles to osteoblasts to affect skeletal mass and structure. However, unraveling the comprehensive molecular mechanisms behind osteoclast differentiation is necessitated to overcome limitations and scarcity of available data, particularly in relation with the emerging roles of long non-coding RNAs (LncRNAs) in gene expression. In this study, we performed comprehensive and progressive analyses of the dynamic transcriptomes of murine osteoclasts, generated in vitro. We compared the total RNA-based transcriptomes of murine bone marrow derived cells with differentiated osteoclasts, while focusing on potentially novel genes and LncRNAs, to uncover critical genes and their associated pathways, which are differentially regulated during osteoclast differentiation. We found 4,214 differentially regulated genes during osteoclast differentiation, which included various types of LncRNAs. Among the upregulated protein coding genes not previously associated with osteoclast are Pheta1, Hagh, Gfpt1 and Nol4, while downregulated genes included Plau, Ltf, Sell and Zfp831. Notably, we report Nol4 as a novel gene related to osteoclast activity since Nol4 knockout mice Nol4em1(International Mouse Phenotyping Consortium)J exhibit increased bone mineral density. Moreover, the differentially expressed LncRNAs included antisense and long intergenic non-coding RNAs, among others. Overall, immune-related and metabolism-related genes were downregulated, while anatomical morphogenesis and remodeling-related genes were upregulated in early-differentiated osteoclasts with sustained downregulation of immune-related genes in mature osteoclasts. The gene signatures and the comprehensive transcriptome of osteoclast differentiation provided herein can serve as an invaluable resource for deciphering gene dysregulation in osteoclast-related pathologic conditions.
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Affiliation(s)
- Salman M Toor
- College of Health and Life Sciences, Hamad Bin Khalifa University, Doha, Qatar
| | - Sachin Wani
- Rheumatology and Bone Disease Unit, Centre for Genomic and Experimental Medicine, Institute of Genetics and Cancer, University of Edinburgh, Edinburgh, United Kingdom
| | - Omar M E Albagha
- College of Health and Life Sciences, Hamad Bin Khalifa University, Doha, Qatar.,Rheumatology and Bone Disease Unit, Centre for Genomic and Experimental Medicine, Institute of Genetics and Cancer, University of Edinburgh, Edinburgh, United Kingdom
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10
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Gong S, Ma J, Tian A, Lang S, Luo Z, Ma X. Effects and mechanisms of microenvironmental acidosis on osteoclast biology. Biosci Trends 2021; 16:58-72. [PMID: 34732613 DOI: 10.5582/bst.2021.01357] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Due to continuous bone remodeling, the bone tissue is dynamic and constantly being updated. Bone remodeling is precisely regulated by the balance between osteoblast-induced bone formation and osteoclast-induced bone resorption. As a giant multinucleated cell, formation and activities of osteoclasts are regulated by macrophage colony-stimulating factor (M-CSF), receptor activator of nuclear factor-kappaB ligand (RANKL), and by pathological destabilization of the extracellular microenvironment. Microenvironmental acidosis, as the prime candidate, is a driving force of multiple biological activities of osteoclast precursor and osteoclasts. The mechanisms involved in these processes, especially acid-sensitive receptors/channels, are of great precision and complicated. Recently, remarkable progress has been achieved in the field of acid-sensitive mechanisms of osteoclasts. It is important to elucidate the relationship between microenvironmental acidosis and excessive osteoclasts activity, which will help in understanding the pathophysiology of diseases that are associated with excess bone resorption. This review summarizes physiological consequences and in particular, potential mechanisms of osteoclast precursor or osteoclasts in the context of acidosis microenvironments.
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Affiliation(s)
- Shuwei Gong
- Tianjin Key Laboratory of Orthopedic Biomechanics and Medical Engineering, Orthopedic Research Institute, Tianjin Hospital, Tianjin, China.,Department of Orthopedics, Tianjin Hospital, Tianjin, China.,Graduate School, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Jianxiong Ma
- Tianjin Key Laboratory of Orthopedic Biomechanics and Medical Engineering, Orthopedic Research Institute, Tianjin Hospital, Tianjin, China.,Department of Orthopedics, Tianjin Hospital, Tianjin, China
| | - Aixian Tian
- Tianjin Key Laboratory of Orthopedic Biomechanics and Medical Engineering, Orthopedic Research Institute, Tianjin Hospital, Tianjin, China.,Department of Orthopedics, Tianjin Hospital, Tianjin, China
| | - Shuang Lang
- Tianjin Key Laboratory of Orthopedic Biomechanics and Medical Engineering, Orthopedic Research Institute, Tianjin Hospital, Tianjin, China.,Department of Orthopedics, Tianjin Hospital, Tianjin, China.,Graduate School, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Zhiheng Luo
- Tianjin Key Laboratory of Orthopedic Biomechanics and Medical Engineering, Orthopedic Research Institute, Tianjin Hospital, Tianjin, China.,Department of Orthopedics, Tianjin Hospital, Tianjin, China
| | - Xinlong Ma
- Tianjin Key Laboratory of Orthopedic Biomechanics and Medical Engineering, Orthopedic Research Institute, Tianjin Hospital, Tianjin, China.,Department of Orthopedics, Tianjin Hospital, Tianjin, China
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11
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Shi Y. The investigation of energy metabolism in osteoblasts and osteoclasts. HUA XI KOU QIANG YI XUE ZA ZHI = HUAXI KOUQIANG YIXUE ZAZHI = WEST CHINA JOURNAL OF STOMATOLOGY 2021; 39:501-509. [PMID: 34636196 DOI: 10.7518/hxkq.2021.05.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The maintenance of bone homeostasis is critical for bone health. It is vulnerable to cause bone loss, even severely osteoporosis when the balance between bone formation and absorption is interrupted. Growing evidence has shown that energy metabolism disorders, such as abnormal glucose metabolism, irregular amino acid metabolism, and aberrant lipid metabolism, can damage bone homeostasis, causing or exacerbating bone mass loss and osteoporosis-related fractures. Here, we summarize the studies of energy metabolism in osteoblasts and osteoclasts and provide a better appreciation of how energy metabolism, especially glucose metabolism maintains bone homeostasis. With this knowledge, new avenues will be unraveled to understand and cue bone-related diseases such as osteoporosis.
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Affiliation(s)
- Yu Shi
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases & West China School of Stomatology, Sichuan University, Chengdu 610041, China
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12
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Baraghithy S, Soae Y, Assaf D, Hinden L, Udi S, Drori A, Gabet Y, Tam J. Renal Proximal Tubule Cell Cannabinoid-1 Receptor Regulates Bone Remodeling and Mass via a Kidney-to-Bone Axis. Cells 2021; 10:414. [PMID: 33671138 PMCID: PMC7922053 DOI: 10.3390/cells10020414] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Revised: 02/07/2021] [Accepted: 02/13/2021] [Indexed: 12/20/2022] Open
Abstract
The renal proximal tubule cells (RPTCs), well-known for maintaining glucose and mineral homeostasis, play a critical role in the regulation of kidney function and bone remodeling. Deterioration in RPTC function may therefore lead to the development of diabetic kidney disease (DKD) and osteoporosis. Previously, we have shown that the cannabinoid-1 receptor (CB1R) modulates both kidney function as well as bone remodeling and mass via its direct role in RPTCs and bone cells, respectively. Here we employed genetic and pharmacological approaches that target CB1R, and found that its specific nullification in RPTCs preserves bone mass and remodeling both under normo- and hyper-glycemic conditions, and that its chronic blockade prevents the development of diabetes-induced bone loss. These protective effects of negatively targeting CB1R specifically in RPTCs were associated with its ability to modulate erythropoietin (EPO) synthesis, a hormone known to affect bone mass and remodeling. Our findings highlight a novel molecular mechanism by which CB1R in RPTCs remotely regulates skeletal homeostasis via a kidney-to-bone axis that involves EPO.
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Affiliation(s)
- Saja Baraghithy
- Obesity and Metabolism Laboratory, The Institute for Drug Research, School of Pharmacy, Faculty of Medicine, The Hebrew University of Jerusalem, Jerusalem 9112001, Israel; (S.B.); (Y.S.); (D.A.); (L.H.); (S.U.); (A.D.)
| | - Yael Soae
- Obesity and Metabolism Laboratory, The Institute for Drug Research, School of Pharmacy, Faculty of Medicine, The Hebrew University of Jerusalem, Jerusalem 9112001, Israel; (S.B.); (Y.S.); (D.A.); (L.H.); (S.U.); (A.D.)
| | - Dekel Assaf
- Obesity and Metabolism Laboratory, The Institute for Drug Research, School of Pharmacy, Faculty of Medicine, The Hebrew University of Jerusalem, Jerusalem 9112001, Israel; (S.B.); (Y.S.); (D.A.); (L.H.); (S.U.); (A.D.)
| | - Liad Hinden
- Obesity and Metabolism Laboratory, The Institute for Drug Research, School of Pharmacy, Faculty of Medicine, The Hebrew University of Jerusalem, Jerusalem 9112001, Israel; (S.B.); (Y.S.); (D.A.); (L.H.); (S.U.); (A.D.)
| | - Shiran Udi
- Obesity and Metabolism Laboratory, The Institute for Drug Research, School of Pharmacy, Faculty of Medicine, The Hebrew University of Jerusalem, Jerusalem 9112001, Israel; (S.B.); (Y.S.); (D.A.); (L.H.); (S.U.); (A.D.)
| | - Adi Drori
- Obesity and Metabolism Laboratory, The Institute for Drug Research, School of Pharmacy, Faculty of Medicine, The Hebrew University of Jerusalem, Jerusalem 9112001, Israel; (S.B.); (Y.S.); (D.A.); (L.H.); (S.U.); (A.D.)
| | - Yankel Gabet
- Department of Anatomy and Anthropology, Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv 69978, Israel;
| | - Joseph Tam
- Obesity and Metabolism Laboratory, The Institute for Drug Research, School of Pharmacy, Faculty of Medicine, The Hebrew University of Jerusalem, Jerusalem 9112001, Israel; (S.B.); (Y.S.); (D.A.); (L.H.); (S.U.); (A.D.)
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13
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Doherty L, Wan M, Kalajzic I, Sanjay A. Diabetes impairs periosteal progenitor regenerative potential. Bone 2021; 143:115764. [PMID: 33221502 PMCID: PMC7770068 DOI: 10.1016/j.bone.2020.115764] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Revised: 11/16/2020] [Accepted: 11/17/2020] [Indexed: 01/01/2023]
Abstract
Diabetics are at increased risk for fracture, and experience severely impaired skeletal healing characterized by delayed union or nonunion of the bone. The periosteum harbors osteochondral progenitors that can differentiate into chondrocytes and osteoblasts, and this connective tissue layer is required for efficient fracture healing. While bone marrow-derived stromal cells have been studied extensively in the context of diabetic skeletal repair and osteogenesis, the effect of diabetes on the periosteum and its ability to contribute to bone regeneration has not yet been explicitly evaluated. Within this study, we utilized an established murine model of type I diabetes to evaluate periosteal cell differentiation capacity, proliferation, and availability under the effect of a diabetic environment. Periosteal cells from diabetic mice were deficient in osteogenic differentiation ability in vitro, and diabetic mice had reduced periosteal populations of mesenchymal progenitors with a corresponding reduction in proliferation capacity following injury. Additionally, fracture callus mineralization and mature osteoblast activity during periosteum-mediated healing was impaired in diabetic mice compared to controls. We propose that the effect of diabetes on periosteal progenitors and their ability to aid in skeletal repair directly impairs fracture healing.
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Affiliation(s)
- Laura Doherty
- Department of Orthopaedic Surgery, UConn Musculoskeletal Institute, UConn Health, Farmington, CT, USA
| | - Matthew Wan
- Department of Orthopaedic Surgery, UConn Musculoskeletal Institute, UConn Health, Farmington, CT, USA
| | - Ivo Kalajzic
- Department of Reconstructive Sciences, UConn School of Dental Medicine, Farmington, CT, USA
| | - Archana Sanjay
- Department of Orthopaedic Surgery, UConn Musculoskeletal Institute, UConn Health, Farmington, CT, USA.
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14
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Hildebrandt N, Colditz J, Dutra C, Goes P, Salbach-Hirsch J, Thiele S, Hofbauer LC, Rauner M. Role of osteogenic Dickkopf-1 in bone remodeling and bone healing in mice with type I diabetes mellitus. Sci Rep 2021; 11:1920. [PMID: 33479403 PMCID: PMC7820472 DOI: 10.1038/s41598-021-81543-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2020] [Accepted: 01/05/2021] [Indexed: 12/11/2022] Open
Abstract
Type 1 diabetes mellitus (T1DM) is associated with low bone mass and a higher risk for fractures. Dickkopf-1 (Dkk1), which inhibits Wnt signaling, osteoblast function, and bone formation, has been found to be increased in the serum of patients with T1DM. Here, we investigated the functional role of Dkk1 in T1DM-induced bone loss in mice. T1DM was induced in 10-week-old male mice with Dkk1-deficiency in late osteoblasts/osteocytes (Dkk1f/f;Dmp1-Cre, cKO) and littermate control mice by 5 subsequent injections of streptozotocin (40 mg/kg). Age-matched, non-diabetic control groups received citrate buffer instead. At week 12, calvarial defects were created in subgroups of each cohort. After a total of 16 weeks, weight, fat, the femoral bone phenotype and the area of the bone defect were analyzed using µCT and dynamic histomorphometry. During the experiment, diabetic WT and cKO mice did not gain body weight compared to control mice. Further they lost their perigonadal and subcutaneous fat pads. Diabetic mice had highly elevated serum glucose levels and impaired glucose tolerance, regardless of their Dkk1 levels. T1DM led to a 36% decrease in trabecular bone volume in Cre− negative control animals, whereas Dkk1 cKO mice only lost 16%. Of note, Dkk1 cKO mice were completely protected from T1DM-induced cortical bone loss. T1DM suppressed the bone formation rate, the number of osteoblasts at trabecular bone, serum levels of P1NP and bone defect healing in both, Dkk1-deficient and sufficient, mice. This may be explained by increased serum sclerostin levels in both genotypes and the strict dependence on bone formation for bone defect healing. In contrast, the number of osteoclasts and TRACP 5b serum levels only increased in diabetic control mice, but not in Dkk1 cKO mice. In summary, Dkk1 derived from osteogenic cells does not influence the development of T1DM but plays a crucial role in T1DM-induced bone loss in male mice by regulating osteoclast numbers.
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Affiliation(s)
- Nick Hildebrandt
- Department of Medicine III and Center for Healthy Aging, Medical Faculty, Technische Universität Dresden, Fetscherstr. 74, 01307, Dresden, Germany
| | - Juliane Colditz
- Department of Medicine III and Center for Healthy Aging, Medical Faculty, Technische Universität Dresden, Fetscherstr. 74, 01307, Dresden, Germany.,Rudolf Schönheimer Institute of Biochemistry, Medical Faculty, University of Leipzig, Johannisallee 30, 04103, Leipzig, Germany
| | - Caio Dutra
- Department of Medicine III and Center for Healthy Aging, Medical Faculty, Technische Universität Dresden, Fetscherstr. 74, 01307, Dresden, Germany.,Post-Graduation Program in Morphological Science, Department of Morphology, School of Medicine, Federal University of Ceará, Fortaleza, CE, Brazil
| | - Paula Goes
- Department of Medicine III and Center for Healthy Aging, Medical Faculty, Technische Universität Dresden, Fetscherstr. 74, 01307, Dresden, Germany.,Department of Pathology and Legal Medicine, School of Medicine, Federal University of Ceará, Fortaleza, CE, Brazil
| | - Juliane Salbach-Hirsch
- Department of Medicine III and Center for Healthy Aging, Medical Faculty, Technische Universität Dresden, Fetscherstr. 74, 01307, Dresden, Germany
| | - Sylvia Thiele
- Department of Medicine III and Center for Healthy Aging, Medical Faculty, Technische Universität Dresden, Fetscherstr. 74, 01307, Dresden, Germany
| | - Lorenz C Hofbauer
- Department of Medicine III and Center for Healthy Aging, Medical Faculty, Technische Universität Dresden, Fetscherstr. 74, 01307, Dresden, Germany
| | - Martina Rauner
- Department of Medicine III and Center for Healthy Aging, Medical Faculty, Technische Universität Dresden, Fetscherstr. 74, 01307, Dresden, Germany.
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15
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Proteomic study of in vitro osteogenic differentiation of mesenchymal stem cells in high glucose condition. Mol Biol Rep 2020; 47:7505-7516. [PMID: 32918125 DOI: 10.1007/s11033-020-05811-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2020] [Accepted: 09/03/2020] [Indexed: 01/11/2023]
Abstract
Patients with diabetes have been widely reported to be at an increased risk of secondary osteoporosis. Osteoporosis is caused by an imbalance in bone remodeling due to increased bone resorption and/or decreased osteoblast-dependent bone formation. In this study, mesenchymal stem cells (MSCs) were used as a disease model to determine the effects of high glucose levels on MSC-osteoblast development. The results indicated that under high glucose conditions, MSCs had reduced cell viability and increased number of β-galactosidase-positive cells. Furthermore, in vitro osteogenesis was shown to be reduced in MSCs cultured in osteogenic differentiation medium at 10, 25, and 40 mM glucose as demonstrated by Alizarin red S staining and alkaline phosphatase activity assay. Moreover, a proteomic study was performed in MSCs cultured with 25 and 40 mM glucose. The proteomic results demonstrated that 12 proteins were up- and downregulated in bone marrow-derived mesenchymal stem cells cultured with high glucose in a dose-dependent manner. The findings presented here contribute to our understanding of the mechanism of diabetes mellitus responsible for bone loss. However, the exact mechanism of action of hyperglycemia on bone deformability requires additional studies.
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16
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Santopaolo M, Sambataro M, Spinetti G, Madeddu P. Bone marrow as a target and accomplice of vascular complications in diabetes. Diabetes Metab Res Rev 2020; 36 Suppl 1:e3240. [PMID: 31840418 DOI: 10.1002/dmrr.3240] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/03/2019] [Accepted: 11/19/2019] [Indexed: 12/16/2022]
Abstract
Peripheral vascular complications are common in diabetic patients. While pathogenic mechanisms have received much consideration, only recently regenerative processes captured attention. There is now a consensus that the bone marrow is a source of reparative cells and that this healing mechanism is lost in people with diabetes, especially in those suffering from ischemic complications. This failure was thought to occur due to a negative impact of diabetes on the mobilization of stem/progenitor cells with angiogenic properties from the bone marrow to the circulation. Moreover, those patients showing severely reduced bone marrow cell mobilization also bared a very high risk for adverse cardiovascular events. More recently, the structural integrity of the bone marrow was recognized to be altered because of the rarefaction of local microvasculature and innervation, thus mirroring anatomical features that typically occur in peripheral tissues. Ensuing hypoxia, nutrient starvation, and creation of an acidic and oxidative environment concur in causing the depletion of stem/progenitor cells in the endosteal niche and in forcing stromal cells to activate an adipogenesis program. Moreover, stem/progenitor cells acquire a pathogenic phenotype and, once mobilized, can pass harmful signalling molecules to vascular cells of peripheral tissues thereby contributing to ischemic complications. These new pieces of evidence indicate that the bone marrow should deserve more attention in the current care of critical limb ischemia and diabetic foot. Owing to powerful reserve capacities, the bone marrow integrity could be preserved and even rescued using rehabilitation programs and pharmacological treatments with consequent benefit for local and whole-organism homeostasis.
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Affiliation(s)
- Marianna Santopaolo
- Bristol Heart Institute, Translational Health Sciences, University of Bristol, Bristol Royal Infirmary, Bristol, UK
| | - Maria Sambataro
- Endocrine, Metabolism, and Nutrition Disease Unit, Santa Maria di Ca' Foncello Hospital, Treviso, Italy
| | - Gaia Spinetti
- Laboratory of Cardiovascular Research, IRCCS MultiMedica, Milan, Italy
| | - Paolo Madeddu
- Bristol Heart Institute, Translational Health Sciences, University of Bristol, Bristol Royal Infirmary, Bristol, UK
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17
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Moon JS, Lee SY, Kim JH, Choi YH, Yang DW, Kang JH, Ko HM, Cho JH, Koh JT, Kim WJ, Kim MS, Kim SH. Synergistic alveolar bone resorption by diabetic advanced glycation end products and mechanical forces. J Periodontol 2019; 90:1457-1469. [PMID: 31294467 DOI: 10.1002/jper.18-0453] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2018] [Revised: 01/08/2019] [Accepted: 03/01/2019] [Indexed: 12/11/2022]
Abstract
BACKGROUND The association between diabetes mellitus (DM) and bone diseases is acknowledged. However, the mechanistic pathways leading to the alveolar bone (AB) destruction remain unclear. This study aims to elucidate the mechanical forces (MF)-induced AB destruction in DM and its underlying mechanism. METHODS In vivo periodontal tissue responses to MF were evaluated in rats with diabetes. In vitro human periodontal ligament (PDL) cells were either treated with advanced glycation end products (AGEs) alone or with AGEs and MF. RESULTS In vivo, the transcription of VEGF-A, colony stimulating factor-1 (CSF-1), and Ager was upregulated in diabetes, whereas changes in DDOST and Glo1 mRNAs were negligible. DM induced VEGF-A protein in the vascular cells of the PDL and subsequent angiogenesis, but DM itself did not induce osteoclastogenesis. MF-induced AB resorption was augmented in DM, and such augmentation was morphologically substantiated by the occasional undermining resorption as well as the frontal resorption of the AB by osteoclasts. The mRNA levels of CSF-1 and vascular endothelial growth factor (VEGF) during MF application were highly elevated in diabetes, compared with those of the normal counterparts. In vitro, AGEs treatment elevated Glut-1 and CSF-1 mRNA levels via the p38 and JNK pathways, whereas OGT and VEGF levels remained unchanged. Compressive MF especially caused upregulation of VEGF, CSF-1, and Glut-1 levels, and such upregulation was further enhanced by AGEs treatment. CONCLUSIONS Overloaded MF and AGEs metabolites may synergistically aggravate AB destruction by upregulating CSF-1 and VEGF. Therefore, regulating the compressive overloading of teeth, as well as the levels of diabetic AGEs, may prove to be an effective therapeutic modality for managing DM-induced AB destruction.
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Affiliation(s)
- Jung-Sun Moon
- Dental Science Research Institute, School of Dentistry, Chonnam National University, Gwangju, South Korea
| | - Su-Young Lee
- Dental Science Research Institute, School of Dentistry, Chonnam National University, Gwangju, South Korea
| | - Jung-Ha Kim
- Dental Science Research Institute, School of Dentistry, Chonnam National University, Gwangju, South Korea
| | - Yoon-Ho Choi
- Dental Science Research Institute, School of Dentistry, Chonnam National University, Gwangju, South Korea
| | - Dong-Wook Yang
- Dental Science Research Institute, School of Dentistry, Chonnam National University, Gwangju, South Korea
| | - Jee-Hae Kang
- Dental Science Research Institute, School of Dentistry, Chonnam National University, Gwangju, South Korea
| | - Hyun-Mi Ko
- Dental Science Research Institute, School of Dentistry, Chonnam National University, Gwangju, South Korea
| | - Jin-Hyoung Cho
- Dental Science Research Institute, School of Dentistry, Chonnam National University, Gwangju, South Korea
| | - Jeong-Tae Koh
- Dental Science Research Institute, School of Dentistry, Chonnam National University, Gwangju, South Korea
| | - Won-Jae Kim
- Dental Science Research Institute, School of Dentistry, Chonnam National University, Gwangju, South Korea
| | - Min-Seok Kim
- Dental Science Research Institute, School of Dentistry, Chonnam National University, Gwangju, South Korea
| | - Sun-Hun Kim
- Dental Science Research Institute, School of Dentistry, Chonnam National University, Gwangju, South Korea
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18
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Wang J, Lu HX, Wang J. Cannabinoid receptors in osteoporosis and osteoporotic pain: a narrative update of review. ACTA ACUST UNITED AC 2019; 71:1469-1474. [PMID: 31294469 DOI: 10.1111/jphp.13135] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2019] [Accepted: 06/15/2019] [Indexed: 12/31/2022]
Abstract
OBJECTIVE Osteoporosis is a skeletal disease with decreased bone mass and alteration in microarchitecture of bone tissue, and these changes put patients in risk of bone fracture. As a common symptom of osteoporosis and complication of osteoporotic fracture, chronic pain is a headache for clinicians. Nonsteroidal anti-inflammatory drugs (NSAIDs), selective COX-2 inhibitors and opioid drugs can temporarily reduce osteoporotic pain but have relevant side effects, such as addiction, tolerability and safety. The review summarized the recent advancements in the study of CB receptors in osteoporosis and osteoporotic pain and related mechanisms. KEY FINDINGS Recent studies indicated the two nociceptive receptors, cannabinoid receptor (CB) and transient receptor potential vanilloid type 1 (TRPV1) channel, are co-expressed in bone cells and play important role in the metabolism of bone cells, suggesting that dualtargeting these 2 receptors/channel may provide a novel approach for osteoporotic pain. In addition, both CB receptor and TRPV1 channel are found to be expressed in the glial cells which play vital role in mediating inflammation, chronic pain and metabolism of bone cells, suggesting a role of glial cells inosteoporotic pain. SUMMARY Multiple-targeting against glial cells, CB receptors and TRPV1 channel may be one effective therapeutic strategy for osteoporotic pain in the future, following the elucidation of the complicated mechanism.
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Affiliation(s)
- Jing Wang
- Department of Osteoporosis, The Second Affiliated Hospital of Shenzhen University, Shenzhen, Guangdong Province, China
| | - Hong-Xia Lu
- Department of Ultrasound, The Second Affiliated Hospital of Shenzhen University, Shenzhen, Guangdong Province, China
| | - Jing Wang
- Department of Nephrology, The Third Affiliated Hospital of Shenzhen University, Shenzhen, Guangdong Province, China
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19
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Dang Z, Avolio E, Albertario A, Sala-Newby GB, Thomas AC, Wang N, Emanueli C, Madeddu P. Nerve growth factor gene therapy improves bone marrow sensory innervation and nociceptor-mediated stem cell release in a mouse model of type 1 diabetes with limb ischaemia. Diabetologia 2019; 62:1297-1311. [PMID: 31016359 PMCID: PMC6560027 DOI: 10.1007/s00125-019-4860-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/07/2018] [Accepted: 03/04/2019] [Indexed: 12/16/2022]
Abstract
AIMS/HYPOTHESIS Sensory neuropathy is common in people with diabetes; neuropathy can also affect the bone marrow of individuals with type 2 diabetes. However, no information exists on the state of bone marrow sensory innervation in type 1 diabetes. Sensory neurons are trophically dependent on nerve growth factor (NGF) for their survival. The aim of this investigation was twofold: (1) to determine if sensory neuropathy affects the bone marrow in a mouse model of type 1 diabetes, with consequences for stem cell liberation after tissue injury; and (2) to verify if a single systemic injection of the NGF gene exerts long-term beneficial effects on these phenomena. METHODS A mouse model of type 1 diabetes was generated in CD1 mice by administration of streptozotocin; vehicle was administered to non-diabetic control animals. Diabetic animals were randomised to receive systemic gene therapy with either human NGF or β-galactosidase. After 13 weeks, limb ischaemia was induced in both groups to study the recovery post injury. When the animals were killed, samples of tissue and peripheral blood were taken to assess stem cell mobilisation and homing, levels of substance P and muscle vascularisation. An in vitro cellular model was adopted to verify signalling downstream to human NGF and related neurotrophic or pro-apoptotic effects. Normally distributed variables were compared between groups using the unpaired Student's t test and non-normally distributed variables were assessed by the Wilcoxon-Mann-Whitney test. The Fisher's exact test was employed for categorical variables. RESULTS Immunohistochemistry indicated a 3.3-fold reduction in the number of substance P-positive nociceptive fibres in the bone marrow of type 1 diabetic mice (p < 0.001 vs non-diabetic). Moreover, diabetes abrogated the creation of a neurokinin gradient which, in non-diabetic mice, favoured the mobilisation and homing of bone-marrow-derived stem cells expressing the substance P receptor neurokinin 1 receptor (NK1R). Pre-emptive gene therapy with NGF prevented bone marrow denervation, contrasting with the inhibitory effect of diabetes on the mobilisation of NK1R-expressing stem cells, and restored blood flow recovery from limb ischaemia. In vitro hNGF induced neurite outgrowth and exerted anti-apoptotic actions on rat PC12 cells exposed to high glucose via activation of the canonical neurotrophic tyrosine kinase receptor type 1 (TrkA) signalling pathway. CONCLUSIONS/INTERPRETATION This study shows, for the first time, the occurrence of sensory neuropathy in the bone marrow of type 1 diabetic mice, which translates into an altered modulation of substance P and depressed release of substance P-responsive stem cells following ischaemia. NGF therapy improves bone marrow sensory innervation, with benefits for healing on the occurrence of peripheral ischaemia. Nociceptors may represent a new target for the treatment of ischaemic complications in diabetes.
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Affiliation(s)
- Zexu Dang
- Experimental Cardiovascular Medicine, Faculty of Translational Health Sciences, Bristol Medical School, University of Bristol, Upper Maudlin Street, Bristol, BS2 8HW, UK
| | - Elisa Avolio
- Experimental Cardiovascular Medicine, Faculty of Translational Health Sciences, Bristol Medical School, University of Bristol, Upper Maudlin Street, Bristol, BS2 8HW, UK
| | - Ambra Albertario
- Experimental Cardiovascular Medicine, Faculty of Translational Health Sciences, Bristol Medical School, University of Bristol, Upper Maudlin Street, Bristol, BS2 8HW, UK
| | - Graciela B Sala-Newby
- Experimental Cardiovascular Medicine, Faculty of Translational Health Sciences, Bristol Medical School, University of Bristol, Upper Maudlin Street, Bristol, BS2 8HW, UK
| | - Anita C Thomas
- Experimental Cardiovascular Medicine, Faculty of Translational Health Sciences, Bristol Medical School, University of Bristol, Upper Maudlin Street, Bristol, BS2 8HW, UK
| | - Nianhong Wang
- Experimental Cardiovascular Medicine, Faculty of Translational Health Sciences, Bristol Medical School, University of Bristol, Upper Maudlin Street, Bristol, BS2 8HW, UK
- Department of Rehabilitation Medicine, Huashan Hospital, Fudan University, Pudong, Shanghai, China
| | - Costanza Emanueli
- National Heart and Lung Institute, Imperial College London, London, UK
| | - Paolo Madeddu
- Experimental Cardiovascular Medicine, Faculty of Translational Health Sciences, Bristol Medical School, University of Bristol, Upper Maudlin Street, Bristol, BS2 8HW, UK.
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20
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Mangialardi G, Ferland-McCollough D, Maselli D, Santopaolo M, Cordaro A, Spinetti G, Sambataro M, Sullivan N, Blom A, Madeddu P. Bone marrow pericyte dysfunction in individuals with type 2 diabetes. Diabetologia 2019; 62:1275-1290. [PMID: 31001672 PMCID: PMC6560025 DOI: 10.1007/s00125-019-4865-6] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Accepted: 03/04/2019] [Indexed: 12/17/2022]
Abstract
AIMS/HYPOTHESIS Previous studies have shown that diabetes mellitus destabilises the integrity of the microvasculature in different organs by damaging the interaction between pericytes and endothelial cells. In bone marrow, pericytes exert trophic functions on endothelial cells and haematopoietic cells through paracrine mechanisms. However, whether bone marrow pericytes are a target of diabetes-induced damage remains unknown. Here, we investigated whether type 2 diabetes can affect the abundance and function of bone marrow pericytes. METHODS We conducted an observational clinical study comparing the abundance and molecular/functional characteristics of CD146+ pericytes isolated from the bone marrow of 25 individuals without diabetes and 14 individuals with uncomplicated type 2 diabetes, referring to our Musculoskeletal Research Unit for hip reconstructive surgery. RESULTS Immunohistochemistry revealed that diabetes causes capillary rarefaction and compression of arteriole size in bone marrow, without changing CD146+ pericyte counts. These data were confirmed by flow cytometry on freshly isolated bone marrow cells. We then performed an extensive functional and molecular characterisation of immunosorted CD146+ pericytes. Type 2 diabetes caused a reduction in pericyte proliferation, viability, migration and capacity to support in vitro angiogenesis, while inducing apoptosis. AKT is a key regulator of the above functions and its phosphorylation state is reportedly reduced in the bone marrow endothelium of individuals with diabetes. Surprisingly, we could not find a difference in AKT phosphorylation (at either Ser473 or Thr308) in bone marrow pericytes from individuals with and without diabetes. Nonetheless, the angiocrine signalling reportedly associated with AKT was found to be significantly downregulated, with lower levels of fibroblast growth factor-2 (FGF2) and C-X-C motif chemokine ligand 12 (CXCL12), and activation of the angiogenesis inhibitor angiopoietin 2 (ANGPT2). Transfection with the adenoviral vector carrying the coding sequence for constitutively active myristoylated AKT rescued functional defects and angiocrine signalling in bone marrow pericytes from diabetic individuals. Furthermore, an ANGPT2 blocking antibody restored the capacity of pericytes to promote endothelial networking. CONCLUSIONS/INTERPRETATION This is the first demonstration of pericyte dysfunction in bone marrow of people with type 2 diabetes. An altered angiocrine signalling from pericytes may participate in bone marrow microvascular remodelling in individuals with diabetes.
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Affiliation(s)
- Giuseppe Mangialardi
- Bristol Heart Institute, University of Bristol, Bristol Royal Infirmary, Level 7, Upper Maudlin Street, Bristol, BS2 8HW, UK
| | - David Ferland-McCollough
- Bristol Heart Institute, University of Bristol, Bristol Royal Infirmary, Level 7, Upper Maudlin Street, Bristol, BS2 8HW, UK
| | - Davide Maselli
- Bristol Heart Institute, University of Bristol, Bristol Royal Infirmary, Level 7, Upper Maudlin Street, Bristol, BS2 8HW, UK
- IRCCS Multimedica, Milan, Italy
- Department of Biochemistry, University of Sassari, Sassari, Italy
| | - Marianna Santopaolo
- Bristol Heart Institute, University of Bristol, Bristol Royal Infirmary, Level 7, Upper Maudlin Street, Bristol, BS2 8HW, UK
| | - Andrea Cordaro
- Bristol Heart Institute, University of Bristol, Bristol Royal Infirmary, Level 7, Upper Maudlin Street, Bristol, BS2 8HW, UK
| | | | - Maria Sambataro
- Department of Specialized Medicines, Endocrine, Metabolic and Nutrition Diseases Unit, Santa Maria of Ca' Foncello Hospital, Treviso, Italy
| | - Niall Sullivan
- Muscloskeletal Research Unit, School of Clinical Sciences, University of Bristol, Bristol, UK
| | - Ashley Blom
- Muscloskeletal Research Unit, School of Clinical Sciences, University of Bristol, Bristol, UK
| | - Paolo Madeddu
- Bristol Heart Institute, University of Bristol, Bristol Royal Infirmary, Level 7, Upper Maudlin Street, Bristol, BS2 8HW, UK.
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21
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Lee KM, Lee CY, Zhang G, Lyu A, Yue KKM. Methylglyoxal activates osteoclasts through JNK pathway leading to osteoporosis. Chem Biol Interact 2019; 308:147-154. [PMID: 31103701 DOI: 10.1016/j.cbi.2019.05.026] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2019] [Revised: 05/03/2019] [Accepted: 05/13/2019] [Indexed: 02/07/2023]
Abstract
Diabetes mellitus is characterized by chronic hyperglycemia and its diverse complications. Hyperglycemia is associated with inflammatory responses in different organs, and diabetic patients have a higher risk of bone fracture due to increased bone weakness. Methylglyoxal, a reactive advanced glycation end product precursor, is known to have increased level in diabetic patients. The accumulation of methylglyoxal promotes inflammation and it may play a role in diabetes related osteoporosis. In this study, therefore, the underlying mechanism of methylglyoxal on osteoporosis was studied using both animal and cell models. In the animal model, rats were treated with either methylglyoxal or saline as control. In the cell model, the macrophage RAW264.7 was treated with methylglyoxal or vehicle control. Following the treatment, animal samples were harvested for micro-CT and real-time polymerase chain reaction analyses. Cell samples were harvested for MTT assay, RT-PCR, and Western Blotting analyses. In both animals and cell cultures, methylglyoxal was shown to induce osteoclastogenesis by increased gene expression of osteoclast bone biomarkers CTSK, OSCAR and TRACP5. Furthermore, in methylglyoxal-treated macrophages activation of the c-Jun N-terminal kinases signaling pathway was observed, and inhibition of JNK activities resulted in down-regulation of osteoclast biomarkers gene expressions. Our results therefore suggested that methylglyoxal may contribute to the progression of diabetes-related osteoporosis and imbalanced bone remodeling through JNK pathway in osteoclasts.
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Affiliation(s)
- Kwan Ming Lee
- School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China
| | - Cheuk Yan Lee
- School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China
| | - Ge Zhang
- School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China; Institute for Advancing Translational Medicine in Bone & Joint Diseases, Hong Kong Baptist University, Hong Kong, China
| | - Aiping Lyu
- School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China; Institute for Advancing Translational Medicine in Bone & Joint Diseases, Hong Kong Baptist University, Hong Kong, China
| | - Kevin Kin Man Yue
- School of Chinese Medicine, Hong Kong Baptist University, Hong Kong, China.
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22
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Shen Y, Guo S, Chen G, Ding Y, Wu Y, Tian W. Hyperglycemia Induces Osteoclastogenesis and Bone Destruction Through the Activation of Ca 2+/Calmodulin-Dependent Protein Kinase II. Calcif Tissue Int 2019; 104:390-401. [PMID: 30506439 DOI: 10.1007/s00223-018-0499-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/28/2018] [Accepted: 11/24/2018] [Indexed: 02/07/2023]
Abstract
Hyperglycemia induces osteoclastogenesis and bone resorption through complicated, undefined mechanisms. Ca2+/calmodulin-dependent protein kinase II (CaMKII) promotes osteoclastogenesis, and could be activated by hyperglycemia. Here, we investigated whether CaMKII is involved in hyperglycemia-induced osteoclastogenesis and subsequent bone resorption. Osteoclast formation, bone resorption, CaMKII expression and phosphorylation were measured under high glucose in vitro and in streptozotocin-induced hyperglycemia rats with or without CaMKII inhibitor KN93. The results showed that 25 mmol/L high glucose in vitro promoted cathepsin K and tartrate-resistant acid phosphatase expression (p < 0.05) and osteoclast formation (p < 0.01) associated with enhancing β isoform expression (p < 0.05) and CaMKII phosphorylation (p < 0.001). Hyperglycemia promoted the formation of osteoclasts and resorption of trabecular and alveolar bone, and inhibited sizes of femur and mandible associated with enhanced CaMKII phosphorylation (p < 0.001) in rats. All these changes could be alleviated by KN93. These findings imply that CaMKII participates not only in hyperglycemia-induced osteoclastogenesis and subsequent bone resorption, but also in the hyperglycemia-induced developmental inhibition of bone.
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Affiliation(s)
- Yanxin Shen
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, People's Republic of China
- National Engineering Laboratory for Oral Regenerative Medicine, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, People's Republic of China
| | - Shujuan Guo
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, People's Republic of China
- National Engineering Laboratory for Oral Regenerative Medicine, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, People's Republic of China
- Department of Periodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, People's Republic of China
| | - Guoqing Chen
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, People's Republic of China
- National Engineering Laboratory for Oral Regenerative Medicine, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, People's Republic of China
| | - Yi Ding
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, People's Republic of China
- Department of Periodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, People's Republic of China
| | - Yafei Wu
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, People's Republic of China.
- Department of Periodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, People's Republic of China.
| | - Weidong Tian
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, People's Republic of China.
- National Engineering Laboratory for Oral Regenerative Medicine, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, People's Republic of China.
- Department of Oral and Maxillofacial Surgery, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, People's Republic of China.
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23
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Chen S, Liu D, He S, Yang L, Bao Q, Qin H, Liu H, Zhao Y, Zong Z. Differential effects of type 1 diabetes mellitus and subsequent osteoblastic β-catenin activation on trabecular and cortical bone in a mouse model. Exp Mol Med 2018; 50:1-14. [PMID: 30518745 PMCID: PMC6281645 DOI: 10.1038/s12276-018-0186-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Revised: 08/27/2018] [Accepted: 09/09/2018] [Indexed: 12/12/2022] Open
Abstract
Type 1 diabetes mellitus (T1DM) is a pathological condition associated with osteopenia. WNT/β-catenin signaling is implicated in this process. Trabecular and cortical bone respond differently to WNT/β-catenin signaling in healthy mice. We investigated whether this signaling has different effects on trabecular and cortical bone in T1DM. We first established a streptozotocin-induced T1DM mouse model and then constitutively activated β-catenin in osteoblasts in the setting of T1DM (T1-CA). The extent of bone loss was greater in trabecular bone than that in cortical bone in T1DM mice, and this difference was consistent with the reduction in the expression of β-catenin signaling in the two bone compartments. Further experiments demonstrated that in T1DM mice, trabecular bone showed lower levels of insulin-like growth factor-1 receptor (IGF-1R) than the levels in cortical bone, leading to lower WNT/β-catenin signaling activity through the inhibition of the IGF-1R/Akt/glycogen synthase kinase 3β (GSK3β) pathway. After β-catenin was activated in T1-CA mice, the bone mass and bone strength increased to substantially greater extents in trabecular bone than those in cortical bone. In addition, the cortical bone of the T1-CA mice displayed an unexpected increase in bone porosity, with increased bone resorption. The downregulated expression of WNT16 might be responsible for these cortical bone changes. In conclusion, we found that although the activation of WNT/β-catenin signaling increased the trabecular bone mass and bone strength in T1DM mice, it also increased the cortical bone porosity, impairing the bone strength. These findings should be considered in the future treatment of T1DM-related osteopenia.
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Affiliation(s)
- Sixu Chen
- State Key Laboratory of Trauma, Burn and Combined Injury, Department of War Wound Rescue Skills Training, Base of Army Health Service Training, Army Medical University, 400038, ChongQing, China.,Department of Orthopedics, The 118th Hospital of the Chinese People's Liberation Army, 325000, Wenzhou, Zhejiang, China
| | - Daocheng Liu
- State Key Laboratory of Trauma, Burn and Combined Injury, Department of War Wound Rescue Skills Training, Base of Army Health Service Training, Army Medical University, 400038, ChongQing, China.,Department of Emergency, Xinqiao Hospital, Army Medical University, 400037, ChongQing, China
| | - Sihao He
- State Key Laboratory of Trauma, Burn and Combined Injury, Department of War Wound Rescue Skills Training, Base of Army Health Service Training, Army Medical University, 400038, ChongQing, China.,Department of Emergency, Xinqiao Hospital, Army Medical University, 400037, ChongQing, China
| | - Lei Yang
- State Key Laboratory of Trauma, Burn and Combined Injury, Department of War Wound Rescue Skills Training, Base of Army Health Service Training, Army Medical University, 400038, ChongQing, China.,Department of Emergency, Xinqiao Hospital, Army Medical University, 400037, ChongQing, China
| | - Quanwei Bao
- State Key Laboratory of Trauma, Burn and Combined Injury, Department of War Wound Rescue Skills Training, Base of Army Health Service Training, Army Medical University, 400038, ChongQing, China.,Department of Emergency, Xinqiao Hospital, Army Medical University, 400037, ChongQing, China
| | - Hao Qin
- State Key Laboratory of Trauma, Burn and Combined Injury, Department of War Wound Rescue Skills Training, Base of Army Health Service Training, Army Medical University, 400038, ChongQing, China.,Department of Emergency, Xinqiao Hospital, Army Medical University, 400037, ChongQing, China
| | - Huayu Liu
- Department of Trauma Surgery, Daping Hospital, Army Medical University, 400042, ChongQing, China
| | - Yufeng Zhao
- Department of Trauma Surgery, Daping Hospital, Army Medical University, 400042, ChongQing, China
| | - Zhaowen Zong
- State Key Laboratory of Trauma, Burn and Combined Injury, Department of War Wound Rescue Skills Training, Base of Army Health Service Training, Army Medical University, 400038, ChongQing, China. .,Department of Emergency, Xinqiao Hospital, Army Medical University, 400037, ChongQing, China.
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24
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Alharbi MA, Zhang C, Lu C, Milovanova TN, Yi L, Ryu JD, Jiao H, Dong G, O'Connor JP, Graves DT. FOXO1 Deletion Reverses the Effect of Diabetic-Induced Impaired Fracture Healing. Diabetes 2018; 67:2682-2694. [PMID: 30279162 PMCID: PMC6245226 DOI: 10.2337/db18-0340] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/21/2018] [Accepted: 09/21/2018] [Indexed: 12/18/2022]
Abstract
Type 1 diabetes impairs fracture healing. We tested the hypothesis that diabetes affects chondrocytes to impair fracture healing through a mechanism that involves the transcription factor FOXO1. Type 1 diabetes was induced by streptozotocin in mice with FOXO1 deletion in chondrocytes (Col2α1Cre+FOXO1L/L) or littermate controls (Col2α1Cre-FOXO1L/L) and closed femoral fractures induced. Diabetic mice had 77% less cartilage and 30% less bone than normoglycemics evaluated histologically and by micro-computed tomography. Both were reversed with lineage-specific FOXO1 ablation. Diabetic mice had a threefold increase in osteoclasts and a two- to threefold increase in RANKL mRNA or RANKL-expressing chondrocytes compared with normoglycemics. Both parameters were rescued by FOXO1 ablation in chondrocytes. Conditions present in diabetes, high glucose (HG), and increased advanced glycation end products (AGEs) stimulated FOXO1 association with the RANKL promoter in vitro, and overexpression of FOXO1 increased RANKL promoter activity in luciferase reporter assays. HG and AGE stimulated FOXO1 nuclear localization, which was reversed by insulin and inhibitors of TLR4, histone deacetylase, nitric oxide, and reactive oxygen species. The results indicate that chondrocytes play a prominent role in diabetes-impaired fracture healing and that high levels of glucose, AGEs, and tumor necrosis factor-α, which are elevated by diabetes, alter RANKL expression in chondrocytes via FOXO1.
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Affiliation(s)
- Mohammed A Alharbi
- Department of Endodontics, Faculty of Dentistry, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Citong Zhang
- Department of Periodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA
| | - Chanyi Lu
- Department of Periodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA
| | - Tatyana N Milovanova
- Department of Periodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA
| | - Leah Yi
- Department of Orthodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA
| | - Je Dong Ryu
- Department of Periodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA
| | - Hongli Jiao
- Department of Periodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA
| | - Guangyu Dong
- Department of Periodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA
| | - J Patrick O'Connor
- Department of Orthopedics, New Jersey Medical School, Rutgers University, Newark, NJ
| | - Dana T Graves
- Department of Periodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA
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25
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Milovanovic P, Stojanovic M, Antonijevic D, Cirovic A, Radenkovic M, Djuric M. "Dangerous duo": Chronic nicotine exposure intensifies diabetes mellitus-related deterioration in bone microstructure - An experimental study in rats. Life Sci 2018; 212:102-108. [PMID: 30266406 DOI: 10.1016/j.lfs.2018.09.044] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Revised: 09/03/2018] [Accepted: 09/24/2018] [Indexed: 01/19/2023]
Abstract
AIMS Bony complications of diabetes mellitus (DM) are still insufficiently understood. Our aims were to analyze the individual and combined effects of chronic hyperglycemia and nicotine exposure on the femoral trabecular and cortical microarchitecture on a rat experimental model. MAIN METHODS The micro-computed tomography based bone microstructural evaluation was performed on male Wistar rats divided into four groups: control (n = 7), experimentally-induced DM (n = 8), chronically exposed to nicotine (n = 9) and the DM group exposed chronically to nicotine (n = 9). KEY FINDINGS Chronic hyperglycemia caused mild trabecular deterioration; yet, the combination of hyperglycemia and nicotine exposure showed more deleterious effects on the trabecular bone. Namely, the DM + nicotine group had significantly lower bone volume fraction, fewer and more rod-like shaped trabeculae, along with higher trabecular separation and lower connectivity than the control group (p < 0.05). Nicotine alone did not show any significant deterioration compared to the control group. DM and DM + nicotine groups had lower cortical porosity than control and nicotine groups (p < 0.05). Cortical thickness did not show any significant intergroup differences, whereas bone perimeter and the mean polar moment of inertia were reduced in DM + nicotine group. SIGNIFICANCE Mild effects of chronic hyperglycemia on bone structure were accentuated by the chronic nicotine exposure, although nicotine alone did not cause any significant bone changes. That suggests a synergistic effect of hyperglycemia and nicotine on bone deterioration and increased propensity to fracture. Indeed, better understanding of risk factors driving bone structural deterioration is a precondition to limit the complications associated with DM.
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Affiliation(s)
- Petar Milovanovic
- Laboratory for Anthropology and Skeletal Biology, Institute of Anatomy, Faculty of Medicine, University of Belgrade, Dr Subotica 4/2, 11000 Belgrade, Serbia
| | - Marko Stojanovic
- Department of Pharmacology, Clinical Pharmacology and Toxicology, Faculty of Medicine, University of Belgrade, Dr Subotica 1, 11000 Belgrade, Serbia
| | - Djordje Antonijevic
- Laboratory for Anthropology and Skeletal Biology, Institute of Anatomy, Faculty of Medicine, University of Belgrade, Dr Subotica 4/2, 11000 Belgrade, Serbia
| | - Aleksandar Cirovic
- Laboratory for Anthropology and Skeletal Biology, Institute of Anatomy, Faculty of Medicine, University of Belgrade, Dr Subotica 4/2, 11000 Belgrade, Serbia
| | - Miroslav Radenkovic
- Department of Pharmacology, Clinical Pharmacology and Toxicology, Faculty of Medicine, University of Belgrade, Dr Subotica 1, 11000 Belgrade, Serbia
| | - Marija Djuric
- Laboratory for Anthropology and Skeletal Biology, Institute of Anatomy, Faculty of Medicine, University of Belgrade, Dr Subotica 4/2, 11000 Belgrade, Serbia.
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26
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Abstract
The adult human skeleton is a multifunctional organ undergoing constant remodeling through the opposing activities of the bone-resorbing osteoclast and the bone-forming osteoblast. The exquisite balance between bone resorption and bone formation is responsible for bone homeostasis in healthy adults. However, evidence has emerged that such a balance is likely disrupted in diabetes where systemic glucose metabolism is dysregulated, resulting in increased bone frailty and osteoporotic fractures. These findings therefore underscore the significance of understanding the role and regulation of glucose metabolism in bone under both normal and pathological conditions. Recent studies have shed new light on the metabolic plasticity and the critical functions of glucose metabolism during osteoclast and osteoblast differentiation. Moreover, these studies have begun to identify intersections between glucose metabolism and the growth factors and transcription factors previously known to regulate osteoblasts and osteoclasts. Here we summarize the current knowledge in the nascent field, and suggest that a fundamental understanding of glucose metabolic pathways in the critical bone cell types may open new avenues for developing novel bone therapeutics.
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Affiliation(s)
- Courtney M Karner
- Department of Orthopaedic Surgery, Duke Orthopaedic Cellular, Developmental, and Genome Laboratories, Department of Cell Biology, Duke University School of Medicine, Durham, NC 27710, USA.
| | - Fanxin Long
- Department of Orthopaedic Surgery, Department of Developmental Biology, Washington University School of Medicine, St Louis, MO 63131, USA.
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27
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New insights into the tonifying kidney-yin herbs and formulas for the treatment of osteoporosis. Arch Osteoporos 2017; 12:14. [PMID: 28127706 DOI: 10.1007/s11657-016-0301-4] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/18/2016] [Accepted: 12/11/2016] [Indexed: 02/03/2023]
Abstract
Osteoporosis is characterized by an increasing osseous fragility and fracture resulting from the low mass and deteriorated microarchitecture in the bone tissue. The hormone replacement therapy and alendronate were frequently used to treat osteoporosis as the primary therapeutic strategy, but their adverse effects have severely limited their extensive clinical application, therefore, it is urgent to develop alternative or complementary therapeutic agents for anti-osteoporosis. Interestingly, with more people focusing on the complementary and alternative medicine, traditional Chinese herbs and formulas are being gradually recognized as safe and effective agents in the treatment of osteoporosis. In particular, a notable trend is that increasing studies are making efforts to clarify the anti-osteoporotic effects and mechanism of the tonifying kidney-yin herbs and formulas, a category of agents identified as effective therapy. Therefore, the purpose of this study is to comprehensively review the tonifying kidney-yin herbs and formulas that have been reported in the treatment of osteoporosis as well as how the agents play their roles in detail. This current study not only will advance our understanding of the actions of tonifying kidney-yin herbs and formulas, but also provide new evidence for the clinic use of the tonifying kidney-yin herbs and formulas in the treatment of osteoporosis.
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28
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Kraut JA, Madias NE. Adverse Effects of the Metabolic Acidosis of Chronic Kidney Disease. Adv Chronic Kidney Dis 2017; 24:289-297. [PMID: 29031355 DOI: 10.1053/j.ackd.2017.06.005] [Citation(s) in RCA: 72] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2017] [Accepted: 06/27/2017] [Indexed: 01/01/2023]
Abstract
The kidney has the principal role in the maintenance of acid-base balance, and therefore, a fall in renal net acid excretion and positive H+ balance often leading to reduced serum [HCO3-] are observed in the course of CKD. This metabolic acidosis can be associated with muscle wasting, development or exacerbation of bone disease, hypoalbuminemia, increased inflammation, progression of CKD, protein malnutrition, alterations in insulin, leptin, and growth hormone, and increased mortality. Importantly, some of the adverse effects can be observed even in the absence of overt hypobicarbonatemia. Administration of base decreases muscle wasting, improves bone disease, restores responsiveness to insulin, slows progression of CKD, and possibly reduces mortality. Base is recommended when serum [HCO3-] is <22 mEq/L, but the target serum [HCO3-] remains unclear. Evidence that increments of serum [HCO3-] >26 mEq/L might be associated with worsening of cardiovascular disease adds complexity to treatment decisions. Further study of the mechanisms through which positive H+ balance in CKD contributes to its various adverse effects and the pathways involved in mediating the benefits and complications of base therapy is warranted.
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