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Ye P, Yang Y, Qu Y, Yang W, Tan J, Zhang C, Sun D, Zhang J, Zhao W, Guo S, Song L, Hou T, Zhang Z, Tang Y, Limjunyawong N, Xu J, Dong S, Dou C, Luo F. LL-37 and bisphosphonate co-delivery 3D-scaffold with antimicrobial and antiresorptive activities for bone regeneration. Int J Biol Macromol 2024; 277:134091. [PMID: 39059543 DOI: 10.1016/j.ijbiomac.2024.134091] [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: 02/20/2024] [Revised: 07/19/2024] [Accepted: 07/20/2024] [Indexed: 07/28/2024]
Abstract
This study introduces a novel 3D scaffold for bone regeneration, composed of silk fibroin, chitosan, nano-hydroxyapatite, LL-37 antimicrobial peptide, and pamidronate. The scaffold addresses a critical need in bone tissue engineering by simultaneously combating bone infections and promoting bone growth. LL-37 was incorporated for its broad-spectrum antimicrobial properties, while pamidronate was included to inhibit bone resorption. The scaffold's porous structure, essential for cell infiltration and nutrient diffusion, was achieved through a freeze-drying process. In vitro assessments using SEM and FTIR confirmed the scaffold's morphology and chemical integrity. Antimicrobial efficacy was tested against pathogens of Staphylococcus aureus (S. aureus) and Pseudomonas aeruginosa (P. aeruginosa). In vivo studies in a murine model of infectious bone defect revealed the scaffold's effectiveness in reducing inflammation and bacterial load, and promoting bone regeneration. RNA sequencing of treated specimens provided insights into the molecular mechanisms underlying these observations, revealing significant gene expression changes related to bone healing and immune response modulation. The results indicate that the scaffold effectively inhibits bacterial growth and supports bone cell functions, making it a promising candidate for treating infectious bone defects. Future studies should focus on optimizing the release of therapeutic agents and evaluating the scaffold's clinical potential.
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Affiliation(s)
- Peng Ye
- Department of Orthopedics, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, 400038, China; Department of Emergency, Affiliated Hospital of Zunyi Medical University, Zunyi, Guizhou 563000, China
| | - Yusheng Yang
- Department of Orthopedics, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, 400038, China
| | - Ying Qu
- Department of Orthopedics, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, 400038, China
| | - Wenxin Yang
- Department of Orthopedics, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, 400038, China
| | - Jiulin Tan
- Department of Orthopedics, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, 400038, China
| | - Chengmin Zhang
- Department of Orthopedics, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, 400038, China
| | - Dong Sun
- Department of Orthopedics, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, 400038, China
| | - Jie Zhang
- Department of Orthopedics, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, 400038, China
| | - Weikang Zhao
- Department of Orthopaedics, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400042, China
| | - Shuquan Guo
- Department of Orthopaedics, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400042, China
| | - Lei Song
- Department of Orthopedics, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, 400038, China
| | - Tianyong Hou
- Department of Orthopedics, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, 400038, China
| | - Zehua Zhang
- Department of Orthopedics, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, 400038, China
| | - Yong Tang
- Department of Orthopedics, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, 400038, China
| | - Nathachit Limjunyawong
- Center of Research Excellence in Allergy and Immunology, Research Department, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand
| | - Jianzhong Xu
- Department of Orthopedics, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, 400038, China
| | - Shiwu Dong
- Department of Orthopedics, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, 400038, China; Department of Biomedical Materials Science, School of Biomedical Engineering, Third Military Medical University, Chongqing 400038, China.
| | - Ce Dou
- Department of Orthopedics, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, 400038, China.
| | - Fei Luo
- Department of Orthopedics, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, 400038, China.
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Shu Y, Tan Z, Pan Z, Chen Y, Wang J, He J, Wang J, Wang Y. Inhibition of inflammatory osteoclasts accelerates callus remodeling in osteoporotic fractures by enhancing CGRP +TrkA + signaling. Cell Death Differ 2024:10.1038/s41418-024-01368-5. [PMID: 39223264 DOI: 10.1038/s41418-024-01368-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2024] [Revised: 08/19/2024] [Accepted: 08/23/2024] [Indexed: 09/04/2024] Open
Abstract
Impaired callus remodeling significantly contributes to the delayed healing of osteoporotic fractures; however, the underlying mechanisms remain unclear. Sensory neuronal signaling plays a crucial role in bone repair. In this study, we aimed to investigate the pathological mechanisms hindering bone remodeling in osteoporotic fractures, particularly focusing on the role of sensory neuronal signaling. We demonstrate that in ovariectomized (OVX) mice, the loss of CGRP+TrkA+ sensory neuronal signaling during callus remodeling correlates with increased Cx3cr1+iOCs expression within the bone callus. Conditional knockout of Cx3cr1+iOCs restored CGRP+TrkA+ sensory neuronal, enabling normal callus remodeling progression. Mechanistically, we further demonstrate that Cx3cr1+iOCs secrete Sema3A in the osteoporotic fracture repair microenvironment, inhibiting CGRP+TrkA+ sensory neurons' axonal regeneration and suppressing nerve-bone signaling exchange, thus hindering bone remodeling. Lastly, in human samples, we observed an association between the loss of CGRP+TrkA+ sensory neuronal signaling and increased expression of Cx3cr1+iOCs. In conclusion, enhancing CGRP+TrkA+ sensory nerve signaling by inhibiting Cx3cr1+iOCs activity presents a potential strategy for treating delayed healing in osteoporotic fractures. Inhibition of inflammatory osteoclasts enhances CGRP+TrkA+ signaling and accelerates callus remodeling in osteoporotic fractures.
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Affiliation(s)
- Yuexia Shu
- Laboratory of Key Technology and Materials in Minimally Invasive Spine Surgery, Tongren Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Center for Spinal Minimally Invasive Research, Shanghai Jiao Tong University, Shanghai, China
- Department of Orthopedics, TongRen Hospital, School of Medicine Shanghai Jiao Tong University, Shanghai, China
| | - Zhenyu Tan
- Department of Pathology, Tongji Hospital, Tongji University, Shanghai, China
| | - Zhen Pan
- Laboratory of Key Technology and Materials in Minimally Invasive Spine Surgery, Tongren Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Center for Spinal Minimally Invasive Research, Shanghai Jiao Tong University, Shanghai, China
- Department of Orthopedics, TongRen Hospital, School of Medicine Shanghai Jiao Tong University, Shanghai, China
- Department of Orthopedics, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Yujie Chen
- Laboratory of Key Technology and Materials in Minimally Invasive Spine Surgery, Tongren Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Center for Spinal Minimally Invasive Research, Shanghai Jiao Tong University, Shanghai, China
- Department of Orthopedics, TongRen Hospital, School of Medicine Shanghai Jiao Tong University, Shanghai, China
| | - Jielin Wang
- Laboratory of Key Technology and Materials in Minimally Invasive Spine Surgery, Tongren Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Center for Spinal Minimally Invasive Research, Shanghai Jiao Tong University, Shanghai, China
- Department of Orthopedics, TongRen Hospital, School of Medicine Shanghai Jiao Tong University, Shanghai, China
| | - Jieming He
- Department of Orthopedics, TongRen Hospital, School of Medicine Shanghai Jiao Tong University, Shanghai, China
| | - Jia Wang
- Department of Orthopedics, TongRen Hospital, School of Medicine Shanghai Jiao Tong University, Shanghai, China
| | - Yuan Wang
- Laboratory of Key Technology and Materials in Minimally Invasive Spine Surgery, Tongren Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.
- Center for Spinal Minimally Invasive Research, Shanghai Jiao Tong University, Shanghai, China.
- Department of Orthopedics, TongRen Hospital, School of Medicine Shanghai Jiao Tong University, Shanghai, China.
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3
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Liu Y, Chen H, Chen T, Qiu G, Han Y. The emerging role of osteoclasts in the treatment of bone metastases: rationale and recent clinical evidence. Front Oncol 2024; 14:1445025. [PMID: 39148909 PMCID: PMC11324560 DOI: 10.3389/fonc.2024.1445025] [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: 06/06/2024] [Accepted: 07/16/2024] [Indexed: 08/17/2024] Open
Abstract
The occurrence of bone metastasis is a grave medical concern that substantially impacts the quality of life in patients with cancer. The precise mechanisms underlying bone metastasis remain unclear despite extensive research efforts, and efficacious therapeutic interventions are currently lacking. The ability of osteoclasts to degrade the bone matrix makes them a crucial factor in the development of bone metastasis. Osteoclasts are implicated in several aspects of bone metastasis, encompassing the formation of premetastatic microenvironment, suppression of the immune system, and reactivation of quiescent tumor cells. Contemporary clinical interventions targeting osteoclasts have proven effective in mitigating bone-related symptoms in patients with cancer. This review comprehensively analyzes the mechanistic involvement of osteoclasts in bone metastasis, delineates potential therapeutic targets associated with osteoclasts, and explores clinical evidence regarding interventions targeting osteoclasts.
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Affiliation(s)
- Youjun Liu
- Department of Spinal Surgery, Liuzhou Municipal Liutie Central Hospital, Liuzhou, China
| | - Huanshi Chen
- Department of Spinal Surgery, Liuzhou Municipal Liutie Central Hospital, Liuzhou, China
| | - Tong Chen
- Department of Spinal Surgery, Liuzhou Municipal Liutie Central Hospital, Liuzhou, China
| | - Guowen Qiu
- Department of Spinal Surgery, Liuzhou Municipal Liutie Central Hospital, Liuzhou, China
| | - Yu Han
- Department of Orthopedics, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
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Zhang Y, Sun H, Huang F, Chen Y, Ding X, Zhou C, Wu Y, Zhang Q, Ma X, Wang J, Yue R, Shen L, Sun X, Ye Z. The chromatin remodeling factor Arid1a cooperates with Jun/Fos to promote osteoclastogenesis by epigenetically upregulating Siglec15 expression. J Bone Miner Res 2024; 39:775-790. [PMID: 38477755 DOI: 10.1093/jbmr/zjae042] [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: 06/23/2023] [Revised: 02/09/2024] [Accepted: 03/08/2024] [Indexed: 03/14/2024]
Abstract
Osteoporosis is characterized by an imbalance between osteoclast-mediated bone resorption and osteoblast-related bone formation, particularly increased osteoclastogenesis. However, the mechanisms by which epigenetic factors regulate osteoclast precursor differentiation during osteoclastogenesis remain poorly understood. Here, we show that the specific knockout of the chromatin remodeling factor Arid1a in bone marrow-derived macrophages (BMDMs) results in increased bone mass. The loss of Arid1a in BMDM inhibits cell-cell fusion and maturation of osteoclast precursors, thereby suppressing osteoclast differentiation. Mechanistically, Arid1a increases the chromatin access in the gene promoter region of sialic acid-binding Ig-like lectin 15 (Siglec15) by transcription factor Jun/Fos, which results in the upregulation of Siglec15 and promotion of osteoclast differentiation. However, the loss of Arid1a reprograms the chromatin structure to restrict Siglec15 expression in osteoclast precursors, thereby inhibiting BMDM differentiation into mature osteoclasts. Deleting Arid1a after ovariectomy (a model for postmenopausal bone loss) alleviated bone loss and maintained bone mass. In summary, epigenetic reprogramming mediated by Arid1a loss suppresses osteoclast differentiation and may serve as a promising therapeutic strategy for treating bone loss diseases.
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Affiliation(s)
- Yongxing Zhang
- Department of Orthopedics, The Second Affiliated Hospital Zhejiang University School of Medicine, Hangzhou, Zhejiang 310009, PR China
- Orthopedics Research Institute of Zhejiang University, Hangzhou, Zhejiang 310009, PR China
- Key Laboratory of Motor System Disease Research and Precision Therapy of Zhejiang Province, Hangzhou, Zhejiang 310009, PR China
- Clinical Research Center of Motor System Disease of Zhejiang Province, Hangzhou, Zhejiang 310009, PR China
| | - Hangxiang Sun
- Department of Orthopedics, The Second Affiliated Hospital Zhejiang University School of Medicine, Hangzhou, Zhejiang 310009, PR China
- Orthopedics Research Institute of Zhejiang University, Hangzhou, Zhejiang 310009, PR China
- Key Laboratory of Motor System Disease Research and Precision Therapy of Zhejiang Province, Hangzhou, Zhejiang 310009, PR China
- Clinical Research Center of Motor System Disease of Zhejiang Province, Hangzhou, Zhejiang 310009, PR China
| | - Fei Huang
- MOE Key Laboratory of Biosystems Homeostasis & Protection and Zhejiang Provincial Key Laboratory for Cancer Molecular Cell Biology, Life Sciences Institute, Zhejiang University, Hangzhou, Zhejiang 310058, PR China
| | - Yang Chen
- Department of Ultrasound, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310016, PR China
| | - Xiying Ding
- Department of Ultrasound, Sir Run Run Shaw Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310016, PR China
| | - Chenhe Zhou
- Department of Orthopedics, The Second Affiliated Hospital Zhejiang University School of Medicine, Hangzhou, Zhejiang 310009, PR China
- Orthopedics Research Institute of Zhejiang University, Hangzhou, Zhejiang 310009, PR China
- Key Laboratory of Motor System Disease Research and Precision Therapy of Zhejiang Province, Hangzhou, Zhejiang 310009, PR China
- Clinical Research Center of Motor System Disease of Zhejiang Province, Hangzhou, Zhejiang 310009, PR China
| | - Yan Wu
- Department of Orthopedics, The Second Affiliated Hospital Zhejiang University School of Medicine, Hangzhou, Zhejiang 310009, PR China
- Orthopedics Research Institute of Zhejiang University, Hangzhou, Zhejiang 310009, PR China
- Key Laboratory of Motor System Disease Research and Precision Therapy of Zhejiang Province, Hangzhou, Zhejiang 310009, PR China
- Clinical Research Center of Motor System Disease of Zhejiang Province, Hangzhou, Zhejiang 310009, PR China
| | - Qing Zhang
- Research Institute of Artificial Intelligence, Zhejiang Lab, Hangzhou, Zhejiang 311121, PR China
| | - Xiao Ma
- Research Institute of Artificial Intelligence, Zhejiang Lab, Hangzhou, Zhejiang 311121, PR China
| | - Jun Wang
- Research Institute of Artificial Intelligence, Zhejiang Lab, Hangzhou, Zhejiang 311121, PR China
| | - Rui Yue
- Institute for Regenerative Medicine, Shanghai East Hospital, Frontier Science Center for Stem Cell Research, Shanghai Key Laboratory of Signaling and Disease Research, School of Life Sciences and Technology, Tongji University, Shanghai 200092, PR China
- Shanghai Institute of Stem Cell Research and Clinical Translation, Shanghai 200120, PR China
| | - Li Shen
- MOE Key Laboratory of Biosystems Homeostasis & Protection and Zhejiang Provincial Key Laboratory for Cancer Molecular Cell Biology, Life Sciences Institute, Zhejiang University, Hangzhou, Zhejiang 310058, PR China
- Hangzhou Innovation Center, Zhejiang University, Hangzhou, Zhejiang 310058, PR China
| | - Xuxu Sun
- Department of Biochemistry and Molecular Cell Biology, State Key Laboratory of Systems Medicine for Cancer, Shanghai Key Laboratory for Tumor Microenvironment and Inflammation, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, PR China
| | - Zhaoming Ye
- Department of Orthopedics, The Second Affiliated Hospital Zhejiang University School of Medicine, Hangzhou, Zhejiang 310009, PR China
- Orthopedics Research Institute of Zhejiang University, Hangzhou, Zhejiang 310009, PR China
- Key Laboratory of Motor System Disease Research and Precision Therapy of Zhejiang Province, Hangzhou, Zhejiang 310009, PR China
- Clinical Research Center of Motor System Disease of Zhejiang Province, Hangzhou, Zhejiang 310009, PR China
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Xie L, Cheng Y, Hu B, Chen X, An Y, Xia Z, Cai G, Li C, Peng H. PCLAF induces bone marrow adipocyte senescence and contributes to skeletal aging. Bone Res 2024; 12:38. [PMID: 38961077 PMCID: PMC11222446 DOI: 10.1038/s41413-024-00337-5] [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: 10/14/2023] [Revised: 03/30/2024] [Accepted: 04/11/2024] [Indexed: 07/05/2024] Open
Abstract
Bone marrow adipocytes (BMAds) affect bone homeostasis, but the mechanism remains unclear. Here, we showed that exercise inhibited PCNA clamp-associated factor (PCLAF) secretion from the bone marrow macrophages to inhibit BMAds senescence and thus alleviated skeletal aging. The genetic deletion of PCLAF in macrophages inhibited BMAds senescence and delayed skeletal aging. In contrast, the transplantation of PCLAF-mediated senescent BMAds into the bone marrow of healthy mice suppressed bone turnover. Mechanistically, PCLAF bound to the ADGRL2 receptor to inhibit AKT/mTOR signaling that triggered BMAds senescence and subsequently spread senescence among osteogenic and osteoclastic cells. Of note, we developed a PCLAF-neutralizing antibody and showed its therapeutic effects on skeletal health in old mice. Together, these findings identify PCLAF as an inducer of BMAds senescence and provide a promising way to treat age-related osteoporosis.
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Affiliation(s)
- Lingqi Xie
- Department of Endocrinology, Endocrinology Research Center, Xiangya Hospital of Central South University, Changsha, Hunan, 410008, China
| | - Yalun Cheng
- Department of Endocrinology, Endocrinology Research Center, Xiangya Hospital of Central South University, Changsha, Hunan, 410008, China
| | - Biao Hu
- Department of Endocrinology, Endocrinology Research Center, Xiangya Hospital of Central South University, Changsha, Hunan, 410008, China
| | - Xin Chen
- Department of Endocrinology, Endocrinology Research Center, Xiangya Hospital of Central South University, Changsha, Hunan, 410008, China
| | - Yuze An
- Department of Endocrinology, Endocrinology Research Center, Xiangya Hospital of Central South University, Changsha, Hunan, 410008, China
| | - Zhuying Xia
- Department of Endocrinology, Endocrinology Research Center, Xiangya Hospital of Central South University, Changsha, Hunan, 410008, China
| | - Guangping Cai
- Department of Endocrinology, Endocrinology Research Center, Xiangya Hospital of Central South University, Changsha, Hunan, 410008, China
| | - Changjun Li
- Department of Endocrinology, Endocrinology Research Center, Xiangya Hospital of Central South University, Changsha, Hunan, 410008, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Changsha, Hunan, 410008, China
- Key Laboratory of Organ Injury, Aging and Regenerative Medicine of Hunan Province, Changsha, Hunan, 410008, China
| | - Hui Peng
- Department of Endocrinology, Endocrinology Research Center, Xiangya Hospital of Central South University, Changsha, Hunan, 410008, China.
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Hamamura K, Nagao M, Furukawa K. Regulation of Glycosylation in Bone Metabolism. Int J Mol Sci 2024; 25:3568. [PMID: 38612379 PMCID: PMC11011486 DOI: 10.3390/ijms25073568] [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: 02/09/2024] [Revised: 03/12/2024] [Accepted: 03/20/2024] [Indexed: 04/14/2024] Open
Abstract
Glycosylation plays a crucial role in the maintenance of homeostasis in the body and at the onset of diseases such as inflammation, neurodegeneration, infection, diabetes, and cancer. It is also involved in bone metabolism. N- and O-glycans have been shown to regulate osteoblast and osteoclast differentiation. We recently demonstrated that ganglio-series and globo-series glycosphingolipids were essential for regulating the proliferation and differentiation of osteoblasts and osteoclasts in glycosyltransferase-knockout mice. Herein, we reviewed the importance of the regulation of bone metabolism by glycoconjugates, such as glycolipids and glycoproteins, including our recent results.
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Affiliation(s)
- Kazunori Hamamura
- Department of Pharmacology, School of Dentistry, Aichi Gakuin University, 1-100 Kusumoto-cho, Chikusa-ku, Nagoya 464-8650, Japan
| | - Mayu Nagao
- Department of Pharmacology, School of Dentistry, Aichi Gakuin University, 1-100 Kusumoto-cho, Chikusa-ku, Nagoya 464-8650, Japan
| | - Koichi Furukawa
- Department of Biomedical Sciences, Chubu University College of Life and Health Sciences, Kasugai 487-8501, Aichi, Japan
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Liu K, Wang Z, Liu J, Zhao W, Qiao F, He Q, Shi J, Meng Q, Wei J, Cheng L. Atsttrin regulates osteoblastogenesis and osteoclastogenesis through the TNFR pathway. Commun Biol 2023; 6:1251. [PMID: 38081906 PMCID: PMC10713527 DOI: 10.1038/s42003-023-05635-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Accepted: 11/27/2023] [Indexed: 12/18/2023] Open
Abstract
Osteoporosis is a systemic metabolic bone disorder for which inflammatory cytokines play an important role. To develop new osteoporosis treatments, strategies for improving the microenvironment for osteoblast and osteoclast balance are needed. Tumor necrosis factor-α (TNF-α) plays an important role in the initiation and development of osteoporosis. Atsttrin is an engineered protein derived from the growth factor, progranulin (PGRN). The present study investigates whether Atsttrin affects osteoclast formation and osteoblast formation. Here we show Atsttrin inhibits TNF-α-induced osteoclastogenesis and inflammation. Further mechanistic investigation indicates Atsttrin inhibits TNF-α-induced osteoclastogenesis through the TNFR1 signaling pathway. Moreover, Atsttrin rescues TNF-α-mediated inhibition of osteoblastogenesis via the TNFR1 pathway. Importantly, the present study indicates that while Atsttrin cannot directly induce osteoblastogenesis, it can significantly enhance osteoblastogenesis through TNFR2-Akt-Erk1/2 signaling. These results suggest that Atsttrin treatment could potentially be a strategy for maintaining proper bone homeostasis by regulating the osteoclast/osteoblast balance. Additionally, these results provide new insights for other bone metabolism-related diseases.
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Affiliation(s)
- Kaiwen Liu
- Department of Orthopedic, Qilu Hospital of Shandong University, Jinan, Shandong, 250012, China
| | - Zihao Wang
- Department of Orthopedic, Qilu Hospital of Shandong University, Jinan, Shandong, 250012, China
| | - Jinbo Liu
- Department of Orthopedic, Qilu Hospital of Shandong University, Jinan, Shandong, 250012, China
| | - Wei Zhao
- Department of Orthopedic, Qilu Hospital of Shandong University, Jinan, Shandong, 250012, China
| | - Fei Qiao
- Department of Orthopedic, Qilu Hospital of Shandong University, Jinan, Shandong, 250012, China
- Department of Pediatric Orthopedic, Dalian Women and Children's Medical Center(group), Dalian, Liaoning, 116012, China
| | - Qiting He
- Department of Orthopedics, Honghui Hospital, Xian Jiaotong University, Xian, Shanxi, 710054, China
| | - Jie Shi
- Department of Orthopedic, Qilu Hospital of Shandong University, Jinan, Shandong, 250012, China
| | - Qunbo Meng
- Department of Orthopedic, Qilu Hospital of Shandong University, Jinan, Shandong, 250012, China
| | - Jianlu Wei
- Department of Orthopedic, Qilu Hospital of Shandong University, Jinan, Shandong, 250012, China.
| | - Lei Cheng
- Department of Orthopedic, Qilu Hospital of Shandong University, Jinan, Shandong, 250012, China.
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8
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Gao YM, Pei Y, Zhao FF, Wang L. Osteoclasts in Osteosarcoma: Mechanisms, Interactions, and Therapeutic Prospects. Cancer Manag Res 2023; 15:1323-1337. [PMID: 38027241 PMCID: PMC10661907 DOI: 10.2147/cmar.s431213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Accepted: 11/09/2023] [Indexed: 12/01/2023] Open
Abstract
Osteosarcoma is an extremely malignant tumor, and its pathogenesis is complex and remains incompletely understood. Most cases of osteosarcoma are accompanied by symptoms of bone loss or result in pathological fractures due to weakened bones. Enhancing the survival rate of osteosarcoma patients has proven to be a long-standing challenge. Numerous studies mentioned in this paper, including in-vitro, in-vivo, and in-situ studies have consistently indicated a close association between the symptoms of bone loss associated with osteosarcoma and the presence of osteoclasts. As the sole cells capable of bone resorption, osteoclasts participate in a malignant cycle within the osteosarcoma microenvironment. These cells interact with osteoblasts and osteosarcoma cells, secreting various factors that further influence these cells, disrupting bone homeostasis, and shifting the balance toward bone resorption, thereby promoting the onset and progression of osteosarcoma. Moreover, the interaction between osteoclasts and various other cells types, such as tumor-associated macrophages, myeloid-derived suppressor cells, DCs cells, T cells, and tumor-associated fibroblasts in the osteosarcoma microenvironment plays a crucial role in disease progression. Consequently, understanding the role of osteoclasts in osteosarcoma has sparked significant interest. This review primarily examines the physiological characteristics and functional mechanisms of osteoclasts in osteosarcoma, and briefly discusses potential therapies targeting osteoclasts for osteosarcoma treatment. These studies provide fresh ideas and directions for future research on the treatment of osteosarcoma.
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Affiliation(s)
- Yi-Ming Gao
- Department of Orthopedic Oncology, The Third Hospital of Hebei Medical University, Shijiazhuang, Hebei, People’s Republic of China
| | - Yan Pei
- Department of Orthopedic Oncology, The Third Hospital of Hebei Medical University, Shijiazhuang, Hebei, People’s Republic of China
| | - Fei-Fei Zhao
- Department of Orthopedics, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei, People’s Republic of China
| | - Ling Wang
- Department of Orthopedic Oncology, The Third Hospital of Hebei Medical University, Shijiazhuang, Hebei, People’s Republic of China
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9
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Yang S, He Z, Wu T, Wang S, Dai H. Glycobiology in osteoclast differentiation and function. Bone Res 2023; 11:55. [PMID: 37884496 PMCID: PMC10603120 DOI: 10.1038/s41413-023-00293-6] [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: 02/11/2023] [Revised: 08/20/2023] [Accepted: 09/07/2023] [Indexed: 10/28/2023] Open
Abstract
Glycans, either alone or in complex with glycan-binding proteins, are essential structures that can regulate cell biology by mediating protein stability or receptor dimerization under physiological and pathological conditions. Certain glycans are ligands for lectins, which are carbohydrate-specific receptors. Bone is a complex tissue that provides mechanical support for muscles and joints, and the regulation of bone mass in mammals is governed by complex interplay between bone-forming cells, called osteoblasts, and bone-resorbing cells, called osteoclasts. Bone erosion occurs when bone resorption notably exceeds bone formation. Osteoclasts may be activated during cancer, leading to a range of symptoms, including bone pain, fracture, and spinal cord compression. Our understanding of the role of protein glycosylation in cells and tissues involved in osteoclastogenesis suggests that glycosylation-based treatments can be used in the management of diseases. The aims of this review are to clarify the process of bone resorption and investigate the signaling pathways mediated by glycosylation and their roles in osteoclast biology. Moreover, we aim to outline how the lessons learned about these approaches are paving the way for future glycobiology-focused therapeutics.
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Affiliation(s)
- Shufa Yang
- Prenatal Diagnostic Center, Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing Maternal and Child Health Care Hospital, Beijing, 100026, China
| | - Ziyi He
- Department of Immunology, School of Basic Medical Sciences, NHC Key Laboratory of Medical Immunology, Peking University, Beijing, 100191, China
| | - Tuo Wu
- Department of Immunology, School of Basic Medical Sciences, NHC Key Laboratory of Medical Immunology, Peking University, Beijing, 100191, China
| | - Shunlei Wang
- Department of Immunology, School of Basic Medical Sciences, NHC Key Laboratory of Medical Immunology, Peking University, Beijing, 100191, China
| | - Hui Dai
- Department of Immunology, School of Basic Medical Sciences, NHC Key Laboratory of Medical Immunology, Peking University, Beijing, 100191, China.
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10
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Wu Y, Ai H, Xi Y, Tan J, Qu Y, Xu J, Luo F, Dou C. Osteoclast-derived apoptotic bodies inhibit naive CD8 + T cell activation via Siglec15, promoting breast cancer secondary metastasis. Cell Rep Med 2023; 4:101165. [PMID: 37607544 PMCID: PMC10518580 DOI: 10.1016/j.xcrm.2023.101165] [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: 10/18/2022] [Revised: 04/18/2023] [Accepted: 07/31/2023] [Indexed: 08/24/2023]
Abstract
The bone microenvironment promotes cancer cell proliferation and dissemination. During periodic bone remodeling, osteoclasts undergo apoptosis, producing large numbers of apoptotic bodies (ABs). However, the biological role of osteoclast-derived ABs, which are residents of the bone-tumor niche, remains largely unknown. Here, we discover that AB-null MRL/lpr mice show resistance to breast cancer cell implantation, with more CD8+ T cell infiltrations and a higher survival rate. We uncover that the membranous Siglec15 on osteoclast-derived ABs binds with sialylated Toll-like receptor 2 (TLR2) and blocks downstream co-stimulatory signaling, leading to the inhibition of naive CD8+ T cell activation. In addition, our study shows that treatment with Siglec15 neutralizing antibodies significantly reduces the incidence of secondary metastases and improves the survival rate of mice with advanced breast cancer bone metastasis. Our findings reveal the immunosuppressive function of osteoclast-derived ABs in the bone-tumor niche and demonstrate the potential of Siglec15 as a common target for anti-resorption and immunotherapy.
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Affiliation(s)
- Yutong Wu
- Department of Orthopedics, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, China
| | - Hongbo Ai
- Department of Orthopedics, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, China
| | - Yuhang Xi
- Department of Orthopedics, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, China
| | - Jiulin Tan
- Department of Orthopedics, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, China
| | - Ying Qu
- Department of Orthopedics, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, China
| | - Jianzhong Xu
- Department of Orthopedics, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, China.
| | - Fei Luo
- Department of Orthopedics, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, China.
| | - Ce Dou
- Department of Orthopedics, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, China.
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11
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Ye Z, Wang Y, Xiang B, Wang H, Tao H, Zhang C, Zhang S, Sun D, Luo F, Song L. Roles of the Siglec family in bone and bone homeostasis. Biomed Pharmacother 2023; 165:115064. [PMID: 37413904 DOI: 10.1016/j.biopha.2023.115064] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Revised: 06/23/2023] [Accepted: 06/23/2023] [Indexed: 07/08/2023] Open
Abstract
Tremendous progress has been seen in the study of the role of sialic acid binding im-munoglobulin type lectins (Siglecs) in osteoimmunology in the past two decades. Interest in Siglecs as immune checkpoints has grown from the recognition that Siglecs have relevance to human disease. Siglecs play important roles in inflammation and cancer, and play key roles in immune cell signaling. By recognizing common sialic acid containing glycans on glycoproteins and glycolipids as regulatory receptors for immune cell signals, Siglecs are expressed on most immune cells and play important roles in normal homeostasis and self-tolerance. In this review, we describe the role that the siglec family plays in bone and bone homeostasis, including the regulation of osteoclast differentiation as well as recent advances in inflammation, cancer and osteoporosis. Particular emphasis is placed on the relevant functions of Siglecs in self-tolerance and as pattern recognition receptors in immune responses, thereby potentially providing emerging strategies for the treatment of bone related diseases.
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Affiliation(s)
- Zi Ye
- The Fourth Corps of Students of the Basic Medical College, Army Medical University, Chongqing 400037, China
| | - Yetong Wang
- The Fourth Corps of Students of the Basic Medical College, Army Medical University, Chongqing 400037, China
| | - Binqing Xiang
- Department of Surgical Anesthesia, First Affiliated Hospital, Army Medical University, Chongqing 400038, China
| | - Heng Wang
- Army Border Defense 331st Brigade, Dandong 118000, China
| | - Haiyan Tao
- Health Management Center, First Affiliated Hospital, Army Medical University, Chongqing 400038, China
| | - Chengmin Zhang
- Department of Orthopaedics, First Affiliated Hospital, Army Medical University, Chongqing 400038, China
| | - Shuai Zhang
- Department of Orthopaedics, First Affiliated Hospital, Army Medical University, Chongqing 400038, China
| | - Dong Sun
- Department of Orthopaedics, First Affiliated Hospital, Army Medical University, Chongqing 400038, China.
| | - Fei Luo
- Department of Orthopaedics, First Affiliated Hospital, Army Medical University, Chongqing 400038, China.
| | - Lei Song
- Department of Orthopaedics, First Affiliated Hospital, Army Medical University, Chongqing 400038, China.
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12
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Fu W, Liu CJ. Unraveling the mechanisms behind joint damage. eLife 2023; 12:e89778. [PMID: 37366155 DOI: 10.7554/elife.89778] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/28/2023] Open
Abstract
A subtype of myeloid monocyte mediates the transition from autoimmunity to joint destruction in rheumatoid arthritis.
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Affiliation(s)
- Wenyu Fu
- Department of Orthopaedic Surgery, New York University Grossman School, New York, United States
- Department of Orthopaedics and Rehabilitation, Yale University School of Medicine, New Haven, United States
| | - Chuan-Ju Liu
- Department of Orthopaedic Surgery, New York University Grossman School, New York, United States
- Department of Orthopaedics and Rehabilitation, Yale University School of Medicine, New Haven, United States
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13
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Guo Q, Chen N, Qian C, Qi C, Noller K, Wan M, Liu X, Zhang W, Cahan P, Cao X. Sympathetic Innervation Regulates Osteocyte-Mediated Cortical Bone Resorption during Lactation. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2207602. [PMID: 37186379 PMCID: PMC10288263 DOI: 10.1002/advs.202207602] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 02/13/2023] [Indexed: 05/17/2023]
Abstract
Bone undergoes constant remodeling by osteoclast bone resorption coupled with osteoblast bone formation at the bone surface. A third major cell type in the bone is osteocytes, which are embedded in the matrix, are well-connected to the lacunar network, and are believed to act as mechanical sensors. Here, it is reported that sympathetic innervation directly regulates lacunar osteocyte-mediated bone resorption inside cortical bone. It is found that sympathetic activity is elevated in different mouse models of bone loss, including lactation, ovariectomy, and glucocorticoid treatment. Further, during lactation elevated sympathetic outflow induces netrin-1 expression by osteocytes to further promote sympathetic nerve sprouting in the cortical bone endosteum in a feed-forward loop. Depletion of tyrosine hydroxylase-positive (TH+ ) sympathetic nerves ameliorated osteocyte-mediated perilacunar bone resorption in lactating mice. Moreover, norepinephrine activates β-adrenergic receptor 2 (Adrb2) signaling to promote secretion of extracellular vesicles (EVs) containing bone-degrading enzymes for perilacunar bone resorption and inhibit osteoblast differentiation. Importantly, osteocyte-specific deletion of Adrb2 or treatment with a β-blocker results in lower bone resorption in lactating mice. Together, these findings show that the sympathetic nervous system promotes osteocyte-driven bone loss during lactation, likely as an adaptive response to the increased energy and mineral demands of the nursing mother.
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Affiliation(s)
- Qiaoyue Guo
- Department of Orthopedic SurgeryJohns Hopkins University School of MedicineBaltimoreMD21205USA
| | - Ningrong Chen
- Department of Orthopedic SurgeryJohns Hopkins University School of MedicineBaltimoreMD21205USA
| | - Cheng Qian
- Department of Orthopedic SurgeryJohns Hopkins University School of MedicineBaltimoreMD21205USA
| | - Cheng Qi
- Department of Orthopedic SurgeryJohns Hopkins University School of MedicineBaltimoreMD21205USA
- Department of Biomedical EngineeringJohns Hopkins University School of MedicineBaltimoreMD21205USA
| | - Kathleen Noller
- Department of Biomedical EngineeringJohns Hopkins University School of MedicineBaltimoreMD21205USA
| | - Mei Wan
- Department of Orthopedic SurgeryJohns Hopkins University School of MedicineBaltimoreMD21205USA
| | - Xiaonan Liu
- Department of Orthopedic SurgeryJohns Hopkins University School of MedicineBaltimoreMD21205USA
| | - Weixin Zhang
- Department of Orthopedic SurgeryJohns Hopkins University School of MedicineBaltimoreMD21205USA
| | - Patrick Cahan
- Department of Biomedical EngineeringJohns Hopkins University School of MedicineBaltimoreMD21205USA
| | - Xu Cao
- Department of Orthopedic SurgeryJohns Hopkins University School of MedicineBaltimoreMD21205USA
- Department of Biomedical EngineeringJohns Hopkins University School of MedicineBaltimoreMD21205USA
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14
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Li Y, Wang X, Hu B, Sun Q, Wan M, Carr A, Liu S, Cao X. Neutralization of excessive levels of active TGF-β1 reduces MSC recruitment and differentiation to mitigate peritendinous adhesion. Bone Res 2023; 11:24. [PMID: 37156778 PMCID: PMC10167238 DOI: 10.1038/s41413-023-00252-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Revised: 01/31/2023] [Accepted: 02/10/2023] [Indexed: 05/10/2023] Open
Abstract
Peritendinous adhesion formation (PAF) can substantially limit the range of motion of digits. However, the origin of myofibroblasts in PAF tissues is still unclear. In this study, we found that the concentration of active TGF-β1 and the numbers of macrophages, mesenchymal stromal cells (MSCs), and myofibroblasts in human and mouse adhesion tissues were increased. Furthermore, knockout of TGF-β1 in macrophages or TGF-β1R2 in MSCs inhibited PAF by reducing MSC and myofibroblast infiltration and collagen I and III deposition, respectively. Moreover, we found that MSCs differentiated into myofibroblasts to form adhesion tissues. Systemic injection of the TGF-β-neutralizing antibody 1D11 during the granulation formation stage of PAF significantly reduced the infiltration of MSCs and myofibroblasts and, subsequently, PAF. These results suggest that macrophage-derived TGF-β1 recruits MSCs to form myofibroblasts in peritendinous adhesions. An improved understanding of PAF mechanisms could help identify a potential therapeutic strategy.
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Affiliation(s)
- YuSheng Li
- Department of Orthopedic Surgery, The Johns Hopkins University School of Medicine, Baltimore, MD, 21205, USA
| | - Xiao Wang
- Department of Orthopedic Surgery, The Johns Hopkins University School of Medicine, Baltimore, MD, 21205, USA
| | - Bo Hu
- Department of Orthopedic Surgery, The Johns Hopkins University School of Medicine, Baltimore, MD, 21205, USA
| | - Qi Sun
- Department of Orthopedic Surgery, The Johns Hopkins University School of Medicine, Baltimore, MD, 21205, USA
| | - Mei Wan
- Department of Orthopedic Surgery, The Johns Hopkins University School of Medicine, Baltimore, MD, 21205, USA
| | - Andrew Carr
- Nuffield Department of Orthopedics, Rheumatology and Musculoskeletal Sciences, Botnar Research Centre, University of Oxford, Windmill Road, Oxford, OX3 7LD, UK
| | - Shen Liu
- Department of Orthopedic Surgery, The Johns Hopkins University School of Medicine, Baltimore, MD, 21205, USA.
| | - Xu Cao
- Department of Orthopedic Surgery, The Johns Hopkins University School of Medicine, Baltimore, MD, 21205, USA.
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15
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Muneyama T, Hasegawa T, Yamamoto T, Hongo H, Haraguchi-Kitakamae M, Abe M, Maruoka H, Ishizu H, Shimizu T, Sasano Y, Li M, Amizuka N. Histochemical assessment on osteoclasts in long bones of toll-like receptor 2 (TLR2) deficient mice. J Oral Biosci 2023; 65:163-174. [PMID: 37088152 DOI: 10.1016/j.job.2023.04.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2023] [Revised: 04/07/2023] [Accepted: 04/10/2023] [Indexed: 04/25/2023]
Abstract
OBJECTIVE Toll-like receptor 2 (TLR2), recognizes a wide variety of pathogen-associated molecular patterns such as lipopolysaccharides, peptidoglycans, and lipopeptides, and is generally believed to be present in monocytes, macrophages, dendritic cells, and vascular endothelial cells. However, no histological examination of osteoclasts, which differentiate from precursors common to macrophages/monocytes, has been performed in a non-infected state of TLR2 deficiency. The objective of this study was to examine the histological properties and function of osteoclasts in the long bones of 8-week-old male TLR2 deficient (TLR2-/-) mice to gain insight into TLR2 function in biological circumstances without microbial infection. METHODS Eight-week-old male wild-type and TLR2-/- mice were fixed with paraformaldehyde solution, and their tibiae and femora were used for micro-CT analysis, immunohistochemistry, transmission electron microscopy, and real-time PCR analysis. RESULTS TLR2-/- tibiae and femora exhibited increased bone volume of metaphyseal trabeculae and elevated numbers of TRAP-positive osteoclasts. However, the number of multinucleated TRAP-positive osteoclasts was reduced, whereas mononuclear TRAP-positive cells increased, despite the high expression levels of Dc-Stamp and Oc-Stamp. Although TRAP-positive multinucleated and mononuclear osteoclasts showed the immunoreactivity and elevated expression of RANK and siglec-15, they revealed weak cathepsin K-positivity and less incorporation of the mineralized bone matrix, and often missing ruffled borders. It seemed likely that, despite the increased numbers, TLR2-/- osteoclasts reduced cell fusion and bone resorption activity. CONCLUSION It seems likely that even without bacterial infection, TLR2 might participate in cell fusion and subsequent bone resorption of osteoclasts.
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Affiliation(s)
- Takafumi Muneyama
- Developmental Biology of Hard Tissue Graduate School of Dental Medicine, Hokkaido University, Sapporo, Japan
| | - Tomoka Hasegawa
- Developmental Biology of Hard Tissue Graduate School of Dental Medicine, Hokkaido University, Sapporo, Japan.
| | - Tomomaya Yamamoto
- Developmental Biology of Hard Tissue Graduate School of Dental Medicine, Hokkaido University, Sapporo, Japan; Northern Army Medical Unit, Camp Makomanai, Japan Ground Self-Defense Forces, Sapporo, Japan
| | - Hiromi Hongo
- Developmental Biology of Hard Tissue Graduate School of Dental Medicine, Hokkaido University, Sapporo, Japan
| | - Mai Haraguchi-Kitakamae
- Developmental Biology of Hard Tissue Graduate School of Dental Medicine, Hokkaido University, Sapporo, Japan; Division of Craniofacial Development and Tissue Biology, Tohoku University Graduate School of Dentistry, Sendai, Japan
| | - Miki Abe
- Developmental Biology of Hard Tissue Graduate School of Dental Medicine, Hokkaido University, Sapporo, Japan
| | - Haruhi Maruoka
- Developmental Biology of Hard Tissue Graduate School of Dental Medicine, Hokkaido University, Sapporo, Japan
| | - Hotaka Ishizu
- Developmental Biology of Hard Tissue Graduate School of Dental Medicine, Hokkaido University, Sapporo, Japan; Orthopedics, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Tomohiro Shimizu
- Orthopedics, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Yasuyuki Sasano
- Division of Craniofacial Development and Tissue Biology, Tohoku University Graduate School of Dentistry, Sendai, Japan
| | - Minqi Li
- Shandong Provincial Key Laboratory of Oral Biomedicine, The School of Stomatology, Shandong University, Jinan, China
| | - Norio Amizuka
- Developmental Biology of Hard Tissue Graduate School of Dental Medicine, Hokkaido University, Sapporo, Japan
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16
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Liu X, Gu Y, Kumar S, Amin S, Guo Q, Wang J, Fang CL, Cao X, Wan M. Oxylipin-PPARγ-initiated adipocyte senescence propagates secondary senescence in the bone marrow. Cell Metab 2023; 35:667-684.e6. [PMID: 37019080 PMCID: PMC10127143 DOI: 10.1016/j.cmet.2023.03.005] [Citation(s) in RCA: 16] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Revised: 01/12/2023] [Accepted: 03/06/2023] [Indexed: 04/07/2023]
Abstract
The chronic use of glucocorticoids decreases bone mass and quality and increases bone-marrow adiposity, but the underlying mechanisms remain unclear. Here, we show that bone-marrow adipocyte (BMAd) lineage cells in adult mice undergo rapid cellular senescence upon glucocorticoid treatment. The senescent BMAds acquire a senescence-associated secretory phenotype, which spreads senescence in bone and bone marrow. Mechanistically, glucocorticoids increase the synthesis of oxylipins, such as 15d-PGJ2, for peroxisome proliferator-activated receptor gamma (PPARγ) activation. PPARγ stimulates the expression of key senescence genes and also promotes oxylipin synthesis in BMAds, forming a positive feedback loop. Transplanting senescent BMAds into the bone marrow of healthy mice is sufficient to induce the secondary spread of senescent cells and bone-loss phenotypes, whereas transplanting BMAds harboring a p16INK4a deletion did not show such effects. Thus, glucocorticoid treatment induces a lipid metabolic circuit that robustly triggers the senescence of BMAd lineage cells that, in turn, act as the mediators of glucocorticoid-induced bone deterioration.
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Affiliation(s)
- Xiaonan Liu
- Department of Orthopaedic Surgery, The Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Yiru Gu
- Department of Orthopaedic Surgery, The Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Surendra Kumar
- Department of Orthopaedic Surgery, The Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Sahran Amin
- Department of Orthopaedic Surgery, The Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Qiaoyue Guo
- Department of Orthopaedic Surgery, The Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Jiekang Wang
- Department of Orthopaedic Surgery, The Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Ching-Lien Fang
- Department of Orthopaedic Surgery, The Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Xu Cao
- Department of Orthopaedic Surgery, The Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Mei Wan
- Department of Orthopaedic Surgery, The Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA.
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