1
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Li B, Yang P, Shen F, You C, Wu F, Shi Y, Ye L. Gli1 labels progenitors during chondrogenesis in postnatal mice. EMBO Rep 2024; 25:1773-1791. [PMID: 38409269 PMCID: PMC11014955 DOI: 10.1038/s44319-024-00093-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2023] [Revised: 01/29/2024] [Accepted: 02/01/2024] [Indexed: 02/28/2024] Open
Abstract
Skeletal growth promoted by endochondral ossification is tightly coordinated by self-renewal and differentiation of chondrogenic progenitors. Emerging evidence has shown that multiple skeletal stem cells (SSCs) participate in cartilage formation. However, as yet, no study has reported the existence of common long-lasting chondrogenic progenitors in various types of cartilage. Here, we identify Gli1+ chondrogenic progenitors (Gli1+ CPs), which are distinct from PTHrP+ or FoxA2+ SSCs, are responsible for the lifelong generation of chondrocytes in the growth plate, vertebrae, ribs, and other cartilage. The absence of Gli1+ CPs leads to cartilage defects and dwarfishness phenotype in mice. Furthermore, we show that the BMP signal plays an important role in self-renewal and maintenance of Gli1+ CPs. Deletion of Bmpr1α triggers Gli1+ CPs quiescence exit and causes the exhaustion of Gli1+ CPs, consequently disrupting columnar cartilage. Collectively, our data demonstrate that Gli1+ CPs are common long-term chondrogenic progenitors in multiple types of cartilage and are essential to maintain cartilage homeostasis.
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Affiliation(s)
- Boer Li
- State Key Laboratory of Oral Diseases and National Center for Stomatology and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
- Department of Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Puying Yang
- State Key Laboratory of Oral Diseases and National Center for Stomatology and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Fangyuan Shen
- State Key Laboratory of Oral Diseases and National Center for Stomatology and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Chengjia You
- State Key Laboratory of Oral Diseases and National Center for Stomatology and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Fanzi Wu
- State Key Laboratory of Oral Diseases and National Center for Stomatology and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Yu Shi
- State Key Laboratory of Oral Diseases and National Center for Stomatology and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China.
| | - Ling Ye
- State Key Laboratory of Oral Diseases and National Center for Stomatology and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China.
- Department of Endodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China.
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2
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Ko FC, Xie R, Willis B, Herdman ZG, Dulion BA, Lee H, Oh CD, Chen D, Sumner DR. Cells transiently expressing periostin are required for intramedullary intramembranous bone regeneration. Bone 2024; 178:116934. [PMID: 37839663 PMCID: PMC10841632 DOI: 10.1016/j.bone.2023.116934] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Revised: 09/29/2023] [Accepted: 10/10/2023] [Indexed: 10/17/2023]
Abstract
Intramembranous bone regeneration plays an important role in fixation of intramedullary implants used in joint replacement and dental implants used in tooth replacement. Despite widespread recognition of the importance of intramembranous bone regeneration in these clinical procedures, the underlying mechanisms have not been well explored. A previous study that examined transcriptomic profiles of regenerating bone from the marrow space showed that increased periostin gene expression preceded increases in several osteogenic genes. We therefore sought to determine the role of cells transiently expressing periostin in intramedullary intramembranous bone regeneration. We used a genetic mouse model that allows tamoxifen-inducible fluorescent labeling of periostin expressing cells. These mice underwent ablation of the bone marrow cavity through surgical disruption, a well-established intramembranous bone regeneration model. We found that in intact bones, fluorescently labeled cells were largely restricted to the periosteal surface of cortical bone and were absent in bone marrow. However, following surgical disruption of the bone marrow cavity, cells transiently expressing periostin were found within the regenerating tissue of the bone marrow compartment even though the cortical bone remained intact. The source of these cells is likely heterogenous, including cells occupying the periosteal surface as well as pericytes and endothelial cells within the marrow cavity. We also found that diphtheria toxin-mediated depletion of cells transiently expressing periostin at the time of surgery impaired intramembranous bone regeneration in mice. These data suggest a critical role of periostin expressing cells in intramedullary intramembranous bone regeneration and may lead to novel therapeutic interventions to accelerate or enhance implant fixation.
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Affiliation(s)
- Frank C Ko
- Department of Anatomy & Cell Biology, Rush University Medical Center, Chicago, IL, 60612, USA; Department of Orthopedic Surgery, Rush University Medical Center, Chicago, IL 60612, USA.
| | - Rong Xie
- Department of Orthopedic Surgery, Rush University Medical Center, Chicago, IL 60612, USA
| | - Brandon Willis
- UC Davis Mouse Biology Program, University of California, Davis, Davis, CA 95616, USA
| | - Zoe G Herdman
- Department of Anatomy & Cell Biology, Rush University Medical Center, Chicago, IL, 60612, USA
| | - Bryan A Dulion
- Department of Anatomy & Cell Biology, Rush University Medical Center, Chicago, IL, 60612, USA
| | - Hoomin Lee
- Department of Anatomy & Cell Biology, Rush University Medical Center, Chicago, IL, 60612, USA
| | - Chun-do Oh
- Department of Orthopedic Surgery, Rush University Medical Center, Chicago, IL 60612, USA
| | - Di Chen
- Research Center for Computer-aided Drug Discovery, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
| | - D Rick Sumner
- Department of Anatomy & Cell Biology, Rush University Medical Center, Chicago, IL, 60612, USA; Department of Orthopedic Surgery, Rush University Medical Center, Chicago, IL 60612, USA
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3
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Kim MS, Ho MJ, Joung MY, Choi YS, Kang MJ. Effect of Dispersion Medium on Pharmacokinetic Profile of Rotigotine Crystalline Suspension following Subcutaneous Injection. Pharmaceutics 2022; 14:pharmaceutics14122630. [PMID: 36559123 PMCID: PMC9784203 DOI: 10.3390/pharmaceutics14122630] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Revised: 11/24/2022] [Accepted: 11/24/2022] [Indexed: 11/29/2022] Open
Abstract
Rotigotine (RTG) is prescribed as a once-daily transdermal patch for managing early Parkinson’s disease (PD), which presents issues such as skin irritation and poor patient adherence. Therefore, the aims of the present study were to formulate aqueous and oily vehicle-based RTG crystalline suspensions for prolonged delivery and to compare their pharmacokinetic profiles and the local behaviors of RTG crystals. RTG-loaded aqueous (AS) and oil suspensions (OS) were fabricated using bead-milling technology (100 mg/mL as RTG), employing carboxymethyl cellulose and sesame oil as suspending agent and oily vehicle, respectively. RTG AS and OS exhibited comparable physical properties in terms of particle size (about 800−900 nm), crystallinity, and dissolution profile, despite higher drug solubility in OS than AS (19.6 and 0.07 mg/mL, respectively). However, AS and OS exhibited markedly distinctive local distribution and inflammatory responses at the injection site, which further promoted different pharmacokinetic patterns following subcutaneous injection in rats. With OS, no drug aggregates were observed with prolonged persistence of the Sudan III-stained oily vehicle at the injection site. In contrast, with AS injection, drug clusters > 7 mm were formed, followed by an enclosure with macrophages and a fibroblastic band. Accordingly, AS exhibited a protracted pharmacokinetic profile over 3 weeks, with prolonged elimination half-life. The local inflammatory response caused by AS injection was almost alleviated after 3 weeks post-dosing. Based on these findings, we conclude that RTG AS system can be a platform to design sophisticated long-acting delivery systems with extended dosing intervals to manage PD.
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4
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Sun S, Xiu C, Chai L, Chen X, Zhang L, Liu Q, Chen J, Zhou H. HDAC inhibitor quisinostat prevents estrogen deficiency-induced bone loss by suppressing bone resorption and promoting bone formation in mice. Eur J Pharmacol 2022; 927:175073. [PMID: 35636521 DOI: 10.1016/j.ejphar.2022.175073] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2022] [Revised: 05/25/2022] [Accepted: 05/25/2022] [Indexed: 12/28/2022]
Abstract
Postmenopausal osteoporosis (PMOP) is a metabolic skeletal disorder characterized by reduced bone mass and impaired bone microarchitecture resulting in increased bone fragility and fracture risk. PMOP is primarily caused by excessive osteoclastogenesis induced by estrogen deficiency. Quisinostat (Qst) is a potent hydroxamate-based second-generation inhibitor of histone deacetylases (HDACs) that can inhibit osteoclast differentiation in vitro, and protect mice from titanium particle-induced osteolysis in vivo. However, whether Qst has therapeutic potential against PMOP remains unclear. In the present study, we evaluated the therapeutic efficacy of Qst on PMOP, using a murine model of ovariectomy (OVX)-induced osteoporosis. We examined the body weight, femur length, and histology of major organs, and showed that Qst did not cause obvious toxicity in mice. Micro-computed tomography and histological analyses revealed that Qst treatment prevented OVX-induced trabecular bone loss both in femurs and vertebrae. Moreover, ELISA showed that Qst decreased the serum levels of the osteoclastic bone resorption marker CTX-1, whereas increased the levels of the osteoblastic bone formation marker Osteocalcin in OVX mice. Consistent with the CTX-1 results, TRAP staining showed that Qst suppressed OVX-induced osteoclastogenesis. Mechanistically, we showed that Qst suppressed RANKL-induced osteoclast differentiation in part by inhibiting p65 nuclear translocation. Collectively, our results demonstrated that Qst can ameliorate estrogen deficiency-induced osteoporosis by inhibiting bone resorption and promoting bone formation in vivo. In summary, our study provided the first preclinical evidence to support Qst as a potential therapeutic agent for PMOP prevention and treatment.
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Affiliation(s)
- Shengxuan Sun
- Department of Orthopaedics, The Second Affiliated Hospital of Soochow University, Suzhou, Jiangsu, 215004, China
| | - Chunmei Xiu
- Orthopedic Institute, The First Affiliated Hospital of Soochow University, Soochow University, Suzhou, Jiangsu, 215021, China
| | - Langhui Chai
- Department of Orthopaedics, The Second Affiliated Hospital of Soochow University, Suzhou, Jiangsu, 215004, China
| | - Xinyu Chen
- Suzhou High School of Jiangsu Province, Suzhou, Jiangsu, 215002, China
| | - Lei Zhang
- Orthopedic Institute, The First Affiliated Hospital of Soochow University, Soochow University, Suzhou, Jiangsu, 215021, China
| | - Qingbai Liu
- Department of Orthopaedics, Lianshui County People's Hospital, The Affiliated Lianshui County People's Hospital of Kangda College of Nanjing Medical University, Huai'an, Jiangsu, 223400, China.
| | - Jianquan Chen
- Orthopedic Institute, The First Affiliated Hospital of Soochow University, Soochow University, Suzhou, Jiangsu, 215021, China.
| | - Haibin Zhou
- Department of Orthopaedics, The Second Affiliated Hospital of Soochow University, Suzhou, Jiangsu, 215004, China.
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5
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Zhang L, Fu X, Ni L, Liu C, Zheng Y, You H, Li M, Xiu C, Zhang L, Gong T, Luo N, Zhang Z, He G, Hu S, Yang H, Chen D, Chen J. Hedgehog Signaling Controls Bone Homeostasis by Regulating Osteogenic/Adipogenic Fate of Skeletal Stem/Progenitor Cells in Mice. J Bone Miner Res 2022; 37:559-576. [PMID: 34870341 DOI: 10.1002/jbmr.4485] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/25/2021] [Revised: 11/22/2021] [Accepted: 11/28/2021] [Indexed: 12/14/2022]
Abstract
Skeletal stem/progenitor cells (SSPCs) can differentiate into osteogenic or adipogenic lineage. The mechanism governing lineage allocation of SSPCs is still not completely understood. Hedgehog (Hh) signaling plays an essential role in specifying osteogenic fate of mesenchymal progenitors during embryogenesis. However, it is still unclear whether Hh signaling is required for lineage allocation of SSPCs in postnatal skeleton, and whether its dysregulation is related to age-related osteoporosis. Here, we demonstrated that Hh signaling was activated in metaphyseal SSPCs during osteogenic differentiation in the adult skeleton, and its activity decreased with aging. Inactivation of Hh signaling by genetic ablation of Smo, a key molecule in Hh signaling, in Osx-Cre-targeted SSPCs and hypertrophic chondrocytes led to decreased bone formation and increased bone marrow adiposity, two key pathological features of age-related osteoporosis. Moreover, we found that the bone-fat imbalance phenotype caused by Smo deletion mainly resulted from aberrant allocation of SSPCs toward adipogenic lineage at the expense of osteogenic differentiation, but not due to accelerated transdifferentiation of chondrocytes into adipocytes. Mechanistically, we found that Hh signaling regulated osteoblast versus adipocyte fate of SSPCs partly through upregulating Wnt signaling. Thus, our results indicate that Hh signaling regulates bone homeostasis and age-related osteoporosis by acting as a critical switch of cell fate decisions of Osx-Cre-targeted SSPCs in mice and suggest that Hh signaling may serve as a potential therapeutic target for the treatment of osteoporosis and other metabolic bone diseases. © 2021 American Society for Bone and Mineral Research (ASBMR).
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Affiliation(s)
- Liwei Zhang
- Orthopedic Department, Taizhou Hospital Affiliated to Wenzhou Medical University, Zhejiang, China.,Orthopedic Institute, Medical College, Soochow University, Suzhou, China
| | - Xuejie Fu
- Orthopedic Institute, Medical College, Soochow University, Suzhou, China
| | - Li Ni
- Department of Orthopaedics, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Cunchang Liu
- Orthopedic Institute, Medical College, Soochow University, Suzhou, China
| | - Yixin Zheng
- Orthopedic Institute, Medical College, Soochow University, Suzhou, China
| | - Hongji You
- Orthopedic Institute, Medical College, Soochow University, Suzhou, China
| | - Meng Li
- Orthopedic Institute, Medical College, Soochow University, Suzhou, China
| | - Chunmei Xiu
- Orthopedic Institute, Medical College, Soochow University, Suzhou, China
| | - Lei Zhang
- Orthopedic Institute, Medical College, Soochow University, Suzhou, China
| | - Tingting Gong
- Orthopedic Institute, Medical College, Soochow University, Suzhou, China
| | - Na Luo
- Orthopedic Institute, Medical College, Soochow University, Suzhou, China
| | - Zunyi Zhang
- Key Laboratory of Mammalian Organogenesis and Regeneration, Hangzhou Normal University, Zhejiang, China
| | - Guangxu He
- Department of Orthopedics, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Shijun Hu
- Institute for Cardiovascular Science, Medical College, Soochow University, Suzhou, China
| | - Huilin Yang
- Orthopedic Institute, Medical College, Soochow University, Suzhou, China.,Department of Orthopaedics, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Di Chen
- Faculty of Pharmaceutical Sciences, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, China
| | - Jianquan Chen
- Orthopedic Institute, Medical College, Soochow University, Suzhou, China.,Department of Orthopaedics, The First Affiliated Hospital of Soochow University, Suzhou, China
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6
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In Situ Gene Expression in Native Cryofixed Bone Tissue. Biomedicines 2022; 10:biomedicines10020484. [PMID: 35203694 PMCID: PMC8962289 DOI: 10.3390/biomedicines10020484] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Revised: 02/09/2022] [Accepted: 02/15/2022] [Indexed: 01/21/2023] Open
Abstract
Bone is a very complex tissue that is constantly changing throughout the lifespan. The precise mechanism of bone regeneration remains poorly understood. Large bone defects can be caused by gunshot injury, trauma, accidents, congenital anomalies and tissue resection due to cancer. Therefore, understanding bone homeostasis and regeneration has considerable clinical and scientific importance in the development of bone therapy. Macrophages are well known innate immune cells secreting different combinations of cytokines and their role in bone regeneration during bone healing is essential. Here, we present a method to identify mRNA transcripts in cryosections of non-decalcified rat bone using in situ hybridization and hybridization chain reaction to explore gene expression in situ for better understanding the gene expression of the bone tissues.
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7
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Larrañaga-Vera A, Toti KS, Flatow JS, Haraczy AJ, Warnick E, Rao H, Gao ZG, Sussman SM, Mediero A, Leucht P, Jacobson KA, Cronstein BN. Novel alendronate-CGS21680 conjugate reduces bone resorption and induces new bone formation in post-menopausal osteoporosis and inflammatory osteolysis mouse models. Arthritis Res Ther 2022; 24:265. [PMID: 36494860 PMCID: PMC9733060 DOI: 10.1186/s13075-022-02961-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Accepted: 11/29/2022] [Indexed: 12/13/2022] Open
Abstract
Loss of bone is a common medical problem and, while it can be treated with available therapies, some of these therapies have critical side effects. We have previously demonstrated that CGS21680, a selective A2A adenosine receptor agonist, prevents bone loss, but its on-target toxicities (hypotension, tachycardia) and frequent dosing requirements make it unusable in the clinic. We therefore generated a novel alendronate-CGS21680 conjugate (MRS7216), to target the agonist to bone where it remains for long periods thereby diminishing the frequency of administration and curtailing side effects. MRS7216 was synthesized from CGS21680 by sequential activation of the carboxylic acid moiety and reacting with an appropriate amino acid (PEG, alendronic acid) under basic conditions. MRS7216 was tested on C57BL/6J (WT) mice with established osteoporosis (OP) and WT or A2A KO mice with wear particle-induced inflammatory osteolysis (OL). Mice were treated weekly with MRS7216 (10mg/kg). Bone formation was studied after in vivo labeling with calcein/Alizarin Red, and μCT and histology analyses were performed. In addition, human primary osteoblasts and osteoclasts were cultured using bone marrow discarded after hip replacement. Receptor binding studies demonstrate that MRS7216 efficiently binds the A2A adenosine receptor. MRS7216-treated OP and OL mice had significant new bone formation and reduced bone loss compared to vehicle or alendronate-treated mice. Histological analysis showed that MRS7216 treatment significantly reduced osteoclast number and increased osteoblast number in murine models. Interestingly, cultured human osteoclast differentiation was inhibited, and osteoblast differentiation was stimulated by the compound indicating that MRS7216 conjugates represent a novel therapeutic approach to treat osteoporosis and osteolysis.
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Affiliation(s)
- Ane Larrañaga-Vera
- grid.240324.30000 0001 2109 4251Division of Translational Medicine, Department of Medicine, NYU Langone Health, 550 First Avenue, Medical Science Building, Room, New York, NY 251 USA
| | - Kiran S. Toti
- grid.419635.c0000 0001 2203 7304Molecular Recognition Section, Laboratory of Bioorganic Chemistry, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD USA
| | - James S. Flatow
- grid.240324.30000 0001 2109 4251Division of Translational Medicine, Department of Medicine, NYU Langone Health, 550 First Avenue, Medical Science Building, Room, New York, NY 251 USA
| | - Alexandra J. Haraczy
- grid.419635.c0000 0001 2203 7304Molecular Recognition Section, Laboratory of Bioorganic Chemistry, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD USA
| | - Eugene Warnick
- grid.419635.c0000 0001 2203 7304Molecular Recognition Section, Laboratory of Bioorganic Chemistry, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD USA
| | - Harsha Rao
- grid.419635.c0000 0001 2203 7304Molecular Recognition Section, Laboratory of Bioorganic Chemistry, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD USA
| | - Zhan-Guo Gao
- grid.419635.c0000 0001 2203 7304Molecular Recognition Section, Laboratory of Bioorganic Chemistry, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD USA
| | - Sarah M. Sussman
- grid.410427.40000 0001 2284 9329Medical College of Georgia at Augusta University, Augusta, GA USA
| | - Aranzazu Mediero
- grid.240324.30000 0001 2109 4251Division of Translational Medicine, Department of Medicine, NYU Langone Health, 550 First Avenue, Medical Science Building, Room, New York, NY 251 USA ,grid.419651.e0000 0000 9538 1950Bone and Joint Research Unit, IIS-Fundación Jiménez Díaz UAM, Madrid, Spain
| | - Philipp Leucht
- grid.283061.e0000 0001 2325 0879Department of Orthopedic Surgery, New York University Langone Orthopedic Hospital, New York, USA ,grid.137628.90000 0004 1936 8753Department of Cell Biology, New York University Grossman School of Medicine, New York, NY USA
| | - Kenneth A. Jacobson
- grid.419635.c0000 0001 2203 7304Molecular Recognition Section, Laboratory of Bioorganic Chemistry, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD USA
| | - Bruce N. Cronstein
- grid.240324.30000 0001 2109 4251Division of Translational Medicine, Department of Medicine, NYU Langone Health, 550 First Avenue, Medical Science Building, Room, New York, NY 251 USA ,grid.240324.30000 0001 2109 4251Division of Rheumatology, Department of Medicine, NYU Langone Health, New York, NY USA
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8
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Yue C, Jin H, Zhang X, Li W, Wang D, Tong P, Liu Y, Tan Z. Aucubin prevents steroid-induced osteoblast apoptosis by enhancing autophagy via AMPK activation. J Cell Mol Med 2021; 25:10175-10184. [PMID: 34612603 PMCID: PMC8572759 DOI: 10.1111/jcmm.16954] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Revised: 09/01/2021] [Accepted: 09/08/2021] [Indexed: 12/19/2022] Open
Abstract
Steroid‐induced osteoblast apoptosis is a crucial pathological process in steroid‐induced osteonecrosis of the femoral head (SONFH). Autophagy can resist apoptosis and AMPK plays an important role in autophagy regulation. Aucubin from the small tree Eucommia ulmoides Oliv., which has a long history of use in orthopaedics and traumatology in Asian medicine, can promote bone formation, but whether it can slow or prevent steroid‐osteoblast apoptosis is unclear. Therefore, we investigated the pathogenesis of SONFH and how the osteoblast responds to aucubin under the dexamethasone stimulation. In human femoral head osteonecrosis specimens, we found that the autophage and apoptosis level were increased, and the AMPK signalling was crucial to autophagy. We observed that aucubin could prevent dexamethasone‐induced apoptosis in osteoblasts by enhancing the level of autophagy. Further, we confirmed that the regulatory effect of aucubin on autophagy and apoptosis was achieved by activating AMPK signalling. We have demonstrated a mechanism of disease progression and shown that aucubin could enhance autophagy through AMPK signalling to prevent osteoblast apoptosis. These findings provide a basis for the further investigation of the potential therapeutic role of aucubin in the SONFH.
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Affiliation(s)
- Chen Yue
- Department of Orthopedic, Luoyang Orthopedic Hospital of Henan Province, Luoyang, China.,Institute of Orthopaedics and Traumatology, The First Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, China
| | - Hongting Jin
- Institute of Orthopaedics and Traumatology, The First Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, China
| | - Xue Zhang
- Department of Orthopedic, Luoyang Orthopedic Hospital of Henan Province, Luoyang, China
| | - Wuyin Li
- Department of Orthopedic, Luoyang Orthopedic Hospital of Henan Province, Luoyang, China
| | - Deli Wang
- Department of Bone and Joint Surgery, Peking University Shenzhen Hospital, Shenzhen, China
| | - Peijian Tong
- Institute of Orthopaedics and Traumatology, The First Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, China
| | - Youwen Liu
- Department of Orthopedic, Luoyang Orthopedic Hospital of Henan Province, Luoyang, China
| | - Zhen Tan
- Department of Bone and Joint Surgery, Peking University Shenzhen Hospital, Shenzhen, China
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9
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Zhang L, Zhang L, You H, Sun S, Liao Z, Zhao G, Chen J. Inhibition of osteoclastogenesis by histone deacetylase inhibitor Quisinostat protects mice against titanium particle-induced bone loss. Eur J Pharmacol 2021; 904:174176. [PMID: 34004213 DOI: 10.1016/j.ejphar.2021.174176] [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] [Received: 02/26/2021] [Revised: 05/06/2021] [Accepted: 05/12/2021] [Indexed: 10/21/2022]
Abstract
Periprosthetic osteolysis (PPO) and subsequent aseptic loosening are major long-term complications after total joint arthroplasty and have become the first causes for further revision surgery. Since PPO is primarily caused by excessive bone resorption stimulated by released wear particles, osteoclast-targeted therapy is considered to be of great potential for PPO prevention and treatment. Accumulating evidences indicated that inhibition of histone deacetylases (HDACs) may represent a novel approach to suppress osteoclast differentiation. However, different inhibitors of HDACs were shown to exhibit distinct safety profiles and efficacy in inhibiting osteoclastogenesis. Quisinostat (Qst) is a hydroxamate-based histone deacetylase inhibitor, and exerts potent anti-cancer activity. However, its effect on osteoclastogenesis and its therapeutic potential in preventing PPO are still unclear. In this study, we found that Qst suppressed RANKL-induced production of TRAP-positive mature osteoclasts, expression of osteoclast-specific genes, formation of F-actin rings, and bone resorption activity at a nanomolar concentration as low as 2 nM in vitro. Furthermore, we found that as low as 30 μg/kg of Qst was sufficient to exert preventive effect on titanium particle-induced osteolysis in the murine calvarial osteolysis model. Mechanistically, we found that Qst suppressed osteoclastogenesis by interfering with NF-κB and c-Fos/NFATc1 pathways. Thus, our study revealed that Qst may serve as a potential therapeutic agent for prevention and treatment of PPO and other osteoclast-mediated diseases.
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Affiliation(s)
- Liwei Zhang
- Orthopedic Institute, Medical College, Soochow University, Suzhou, Jiangsu, 215007, China; Department of Orthopaedics, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, 215006, China
| | - Lei Zhang
- Orthopedic Institute, Medical College, Soochow University, Suzhou, Jiangsu, 215007, China; Department of Orthopaedics, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, 215006, China
| | - Hongji You
- Orthopedic Institute, Medical College, Soochow University, Suzhou, Jiangsu, 215007, China; Department of Orthopaedics, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, 215006, China
| | - Shengxuan Sun
- Department of Orthopedics, The Second Affiliated Hospital of Soochow University, Suzhou, Jiangsu, 215004, China
| | - Zirui Liao
- Orthopedic Institute, Medical College, Soochow University, Suzhou, Jiangsu, 215007, China; Department of Orthopaedics, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, 215006, China
| | - Gang Zhao
- Department of Hand Surgery, Wuxi No.9 People's Hospital Affiliated to Soochow University, Wuxi, Jiangsu, 214062, China.
| | - Jianquan Chen
- Orthopedic Institute, Medical College, Soochow University, Suzhou, Jiangsu, 215007, China; Department of Orthopaedics, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, 215006, China.
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