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Li D, Liu C, Wang H, Li Y, Wang Y, An S, Sun S. The Role of Neuromodulation and Potential Mechanism in Regulating Heterotopic Ossification. Neurochem Res 2024; 49:1628-1642. [PMID: 38416374 DOI: 10.1007/s11064-024-04118-8] [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: 11/03/2023] [Revised: 01/17/2024] [Accepted: 01/28/2024] [Indexed: 02/29/2024]
Abstract
Heterotopic ossification (HO) is a pathological process characterized by the aberrant formation of bone in muscles and soft tissues. It is commonly triggered by traumatic brain injury, spinal cord injury, and burns. Despite a wide range of evidence underscoring the significance of neurogenic signals in proper bone remodeling, a clear understanding of HO induced by nerve injury remains rudimentary. Recent studies suggest that injury to the nervous system can activate various signaling pathways, such as TGF-β, leading to neurogenic HO through the release of neurotrophins. These pathophysiological changes lay a robust groundwork for the prevention and treatment of HO. In this review, we collected evidence to elucidate the mechanisms underlying the pathogenesis of HO related to nerve injury, aiming to enhance our understanding of how neurological repair processes can culminate in HO.
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Affiliation(s)
- Dengju Li
- Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
- Shandong First Medical University, Jinan, Shandong, China
| | - Changxing Liu
- Shandong Provincial Hospital, Shandong University, Jinan, Shandong, China
| | - Haojue Wang
- Shandong Provincial Hospital, Shandong University, Jinan, Shandong, China
| | - Yunfeng Li
- Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
| | - Yaqi Wang
- Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
| | - Senbo An
- Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China.
- Shandong First Medical University, Jinan, Shandong, China.
| | - Shui Sun
- Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China.
- Shandong First Medical University, Jinan, Shandong, China.
- Shandong Provincial Hospital, Shandong University, Jinan, Shandong, China.
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2
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Li J, Zhang Z, Tang J, Hou Z, Li L, Li B. Emerging roles of nerve-bone axis in modulating skeletal system. Med Res Rev 2024; 44:1867-1903. [PMID: 38421080 DOI: 10.1002/med.22031] [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: 12/04/2023] [Revised: 01/25/2024] [Accepted: 02/16/2024] [Indexed: 03/02/2024]
Abstract
Over the past decades, emerging evidence in the literature has demonstrated that the innervation of bone is a crucial modulator for skeletal physiology and pathophysiology. The nerve-bone axis sparked extensive preclinical and clinical investigations aimed at elucidating the contribution of nerve-bone crosstalks to skeleton metabolism, homeostasis, and injury repair through the perspective of skeletal neurobiology. To date, peripheral nerves have been widely reported to mediate bone growth and development and fracture healing via the secretion of neurotransmitters, neuropeptides, axon guidance factors, and neurotrophins. Relevant studies have further identified several critical neural pathways that stimulate profound alterations in bone cell biology, revealing a complex interplay between the skeleton and nerve systems. In addition, inspired by nerve-bone crosstalk, novel drug delivery systems and bioactive materials have been developed to emulate and facilitate the process of natural bone repair through neuromodulation, eventually boosting osteogenesis for ideal skeletal tissue regeneration. Overall, this work aims to review the novel research findings that contribute to deepening the current understanding of the nerve-bone axis, bringing forth some schemas that can be translated into the clinical scenario to highlight the critical roles of neuromodulation in the skeletal system.
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Affiliation(s)
- Jingya Li
- State Key Laboratory of Oral Diseases, National Center for Stomatology, National Clinical Research Center for Oral Diseases, Department of Head and Neck Oncology, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Zhuoyuan Zhang
- State Key Laboratory of Oral Diseases, National Center for Stomatology, National Clinical Research Center for Oral Diseases, Department of Head and Neck Oncology, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Jinru Tang
- State Key Laboratory of Oral Diseases, National Center for Stomatology, National Clinical Research Center for Oral Diseases, Department of Head and Neck Oncology, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Zeyu Hou
- State Key Laboratory of Oral Diseases, National Center for Stomatology, National Clinical Research Center for Oral Diseases, Department of Head and Neck Oncology, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Longjiang Li
- State Key Laboratory of Oral Diseases, National Center for Stomatology, National Clinical Research Center for Oral Diseases, Department of Head and Neck Oncology, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Bo Li
- State Key Laboratory of Oral Diseases, National Center for Stomatology, National Clinical Research Center for Oral Diseases, Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China
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3
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Xu Y, Xu C, Song H, Feng X, Ma L, Zhang X, Li G, Mu C, Tan L, Zhang Z, Liu Z, Luo Z, Yang C. Biomimetic bone-periosteum scaffold for spatiotemporal regulated innervated bone regeneration and therapy of osteosarcoma. J Nanobiotechnology 2024; 22:250. [PMID: 38750519 PMCID: PMC11094931 DOI: 10.1186/s12951-024-02430-7] [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: 02/08/2024] [Accepted: 03/20/2024] [Indexed: 05/19/2024] Open
Abstract
The complexity of repairing large segment defects and eradicating residual tumor cell puts the osteosarcoma clinical management challenging. Current biomaterial design often overlooks the crucial role of precisely regulating innervation in bone regeneration. Here, we develop a Germanium Selenium (GeSe) co-doped polylactic acid (PLA) nanofiber membrane-coated tricalcium phosphate bioceramic scaffold (TCP-PLA/GeSe) that mimics the bone-periosteum structure. This biomimetic scaffold offers a dual functionality, combining piezoelectric and photothermal conversion capabilities while remaining biodegradable. When subjected to ultrasound irradiation, the US-electric stimulation of TCP-PLA/GeSe enables spatiotemporal control of neurogenic differentiation. This feature supports early innervation during bone formation, promoting early neurogenic differentiation of Schwann cells (SCs) by increasing intracellular Ca2+ and subsequently activating the PI3K-Akt and Ras signaling pathways. The biomimetic scaffold also demonstrates exceptional osteogenic differentiation potential under ultrasound irradiation. In rabbit model of large segment bone defects, the TCP-PLA/GeSe demonstrates promoted osteogenesis and nerve fibre ingrowth. The combined attributes of high photothermal conversion capacity and the sustained release of anti-tumor selenium from the TCP-PLA/GeSe enable the synergistic eradication of osteosarcoma both in vitro and in vivo. This strategy provides new insights on designing advanced biomaterials of repairing large segment bone defect and osteosarcoma.
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Affiliation(s)
- Yan Xu
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Chao Xu
- College of Materials Science and Engineering, Wuhan Textile University, Wuhan, 430200, China
| | - Huan Song
- Otorhinolaryngology Head and Neck Surgery, Wuhan Fourth Hospital, Wuhan, Hubei, 430033, China
| | - Xiaobo Feng
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Liang Ma
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Xiaoguang Zhang
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Gaocai Li
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Congpu Mu
- Center for High Pressure Science, State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, 066004, China
| | - Lei Tan
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430074, China
| | - Zhengdong Zhang
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430074, China.
- School of Clinical Medicine, Department of Orthopedics, Chengdu Medical College, the First Affiliated Hospital of Chengdu Medical College, Chengdu, 610500, China.
| | - Zhongyuan Liu
- Center for High Pressure Science, State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, 066004, China
| | - Zhiqiang Luo
- College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan, 430022, China.
| | - Cao Yang
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430074, China.
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Pan D, Benkato KG, Han X, Zheng J, Kumar V, Wan M, Zheng J, Cao X. Senescence of endplate osteoclasts induces sensory innervation and spinal pain. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2023.10.26.564218. [PMID: 37961590 PMCID: PMC10634856 DOI: 10.1101/2023.10.26.564218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2023]
Abstract
Spinal pain affects individuals of all ages and is the most common musculoskeletal problem globally. Its clinical management remains a challenge as the underlying mechanisms leading to it are still unclear. Here, we report that significantly increased numbers of senescent osteoclasts (SnOCs) are observed in mouse models of spinal hypersensitivity, like lumbar spine instability (LSI) or aging, compared to controls. The larger population of SnOCs is associated with induced sensory nerve innervation, as well as the growth of H-type vessels, in the porous endplate. We show that deletion of senescent cells by administration of the senolytic drug Navitoclax (ABT263) results in significantly less spinal hypersensitivity, spinal degeneration, porosity of the endplate, sensory nerve innervation and H-type vessel growth in the endplate. We also show that there is significantly increased SnOC-mediated secretion of Netrin-1 and NGF, two well-established sensory nerve growth factors, compared to non-senescent OCs. These findings suggest that pharmacological elimination of SnOCs may be a potent therapy to treat spinal pain.
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Zhao L, Lai Y, Jiao H, Huang J. Nerve growth factor receptor limits inflammation to promote remodeling and repair of osteoarthritic joints. Nat Commun 2024; 15:3225. [PMID: 38622181 PMCID: PMC11018862 DOI: 10.1038/s41467-024-47633-6] [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: 06/06/2023] [Accepted: 04/08/2024] [Indexed: 04/17/2024] Open
Abstract
Osteoarthritis (OA) is a painful, incurable disease affecting over 500 million people. Recent clinical trials of the nerve growth factor (NGF) inhibitors in OA patients have suggested adverse effects of NGF inhibition on joint structure. Here we report that nerve growth factor receptor (NGFR) is upregulated in skeletal cells during OA and plays an essential role in the remodeling and repair of osteoarthritic joints. Specifically, NGFR is expressed in osteochondral cells but not in skeletal progenitor cells and induced by TNFα to attenuate NF-κB activation, maintaining proper BMP-SMAD1 signaling and suppressing RANKL expression in mice. NGFR deficiency hyper-activates NF-κB in murine osteoarthritic joints, which impairs bone formation and enhances bone resorption as exemplified by a reduction in subchondral bone and osteophytes. In human OA cartilage, NGFR is also negatively associated with NF-κB activation. Together, this study suggests a role of NGFR in limiting inflammation for repair of diseased skeletal tissues.
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Affiliation(s)
- Lan Zhao
- Department of Orthopedic Surgery, Rush University Medical Center, Chicago, IL, USA
| | - Yumei Lai
- Department of Orthopedic Surgery, Rush University Medical Center, Chicago, IL, USA
| | - Hongli Jiao
- Department of Orthopedic Surgery, Rush University Medical Center, Chicago, IL, USA
| | - Jian Huang
- Department of Orthopedic Surgery, Rush University Medical Center, Chicago, IL, USA.
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Yang D, Xu J, Xu K, Xu P. Skeletal interoception in osteoarthritis. Bone Res 2024; 12:22. [PMID: 38561376 PMCID: PMC10985098 DOI: 10.1038/s41413-024-00328-6] [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: 09/14/2023] [Revised: 03/02/2024] [Accepted: 03/16/2024] [Indexed: 04/04/2024] Open
Abstract
The interoception maintains proper physiological conditions and metabolic homeostasis by releasing regulatory signals after perceving changes in the internal state of the organism. Among its various forms, skeletal interoception specifically regulates the metabolic homeostasis of bones. Osteoarthritis (OA) is a complex joint disorder involving cartilage, subchondral bone, and synovium. The subchondral bone undergoes continuous remodeling to adapt to dynamic joint loads. Recent findings highlight that skeletal interoception mediated by aberrant mechanical loads contributes to pathological remodeling of the subchondral bone, resulting in subchondral bone sclerosis in OA. The skeletal interoception is also a potential mechanism for chronic synovial inflammation in OA. In this review, we offer a general overview of interoception, specifically skeletal interoception, subchondral bone microenviroment and the aberrant subchondral remedeling. We also discuss the role of skeletal interoception in abnormal subchondral bone remodeling and synovial inflammation in OA, as well as the potential prospects and challenges in exploring novel OA therapies that target skeletal interoception.
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Affiliation(s)
- Dinglong Yang
- Department of Joint Surgery, Honghui Hospital, Xi'an Jiaotong University, Xi'an, 710054, China
| | - Jiawen Xu
- Department of Orthopedic Surgery and Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Ke Xu
- Department of Joint Surgery, Honghui Hospital, Xi'an Jiaotong University, Xi'an, 710054, China
| | - Peng Xu
- Department of Joint Surgery, Honghui Hospital, Xi'an Jiaotong University, Xi'an, 710054, China.
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Shi J, Zhang B, Wu Z, Zhang Y, Gupta A, Wang X, Wang J, Pan L, Xiao M, Zhang S, Wang L. Peripheral nerve-derived Sema3A promotes osteogenic differentiation of mesenchymal stem cells through the Wnt/β-catenin/Nrp1 positive feedback loop. J Cell Mol Med 2024; 28:e18201. [PMID: 38568078 PMCID: PMC10989576 DOI: 10.1111/jcmm.18201] [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: 11/01/2023] [Revised: 01/09/2024] [Accepted: 02/20/2024] [Indexed: 04/05/2024] Open
Abstract
Sensory nerves play a crucial role in maintaining bone homeostasis by releasing Semaphorin 3A (Sema3A). However, the specific mechanism of Sema3A in regulation of bone marrow mesenchymal stem cells (BMMSCs) during bone remodelling remains unclear. The tibial denervation model was used and the denervated tibia exhibited significantly lower mass as compared to sham operated bones. In vitro, BMMSCs cocultured with dorsal root ganglion cells (DRGs) or stimulated by Sema3A could promote osteogenic differentiation through the Wnt/β-catenin/Nrp1 positive feedback loop, and the enhancement of osteogenic activity could be inhibited by SM345431 (Sema3A-specific inhibitor). In addition, Sema3A-stimulated BMMSCs or intravenous injection of Sema3A could promote new bone formation in vivo. To sum up, the coregulation of bone remodelling is due to the ageing of BMMSCs and increased osteoclast activity. Furthermore, the sensory neurotransmitter Sema3A promotes osteogenic differentiation of BMMSCs via Wnt/β-catenin/Nrp1 positive feedback loop, thus promoting osteogenesis in vivo and in vitro.
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Affiliation(s)
- Jingcun Shi
- Department of Oral and Maxillofacial Surgery – Head & Neck OncologyShanghai Ninth People's Hospital, Shanghai Jiao Tong University School of MedicineShanghaiChina
- College of StomatologyShanghai Jiao Tong UniversityShanghaiChina
- National Center for StomatologyNational Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of StomatologyShanghaiChina
| | - Bingqing Zhang
- Department of Oral and Maxillofacial Surgery – Head & Neck OncologyShanghai Ninth People's Hospital, Shanghai Jiao Tong University School of MedicineShanghaiChina
- College of StomatologyShanghai Jiao Tong UniversityShanghaiChina
- National Center for StomatologyNational Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of StomatologyShanghaiChina
| | - Ziqian Wu
- Department of Oral and Maxillofacial Surgery – Head & Neck OncologyShanghai Ninth People's Hospital, Shanghai Jiao Tong University School of MedicineShanghaiChina
- College of StomatologyShanghai Jiao Tong UniversityShanghaiChina
- National Center for StomatologyNational Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of StomatologyShanghaiChina
| | - Yuhan Zhang
- Department of Oral and Maxillofacial Surgery – Head & Neck OncologyShanghai Ninth People's Hospital, Shanghai Jiao Tong University School of MedicineShanghaiChina
- College of StomatologyShanghai Jiao Tong UniversityShanghaiChina
- National Center for StomatologyNational Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of StomatologyShanghaiChina
| | - Anand Gupta
- Department of Dentistry, Oral Health CentreGovernment Medical College HospitalChandigarhIndia
| | - Xudong Wang
- Department of StomatologyShanghai East Hospital, School of Medicine, Tongji UniversityShanghaiChina
| | - Jieyu Wang
- Department of Oral and Maxillofacial Surgery – Head & Neck OncologyShanghai Ninth People's Hospital, Shanghai Jiao Tong University School of MedicineShanghaiChina
- College of StomatologyShanghai Jiao Tong UniversityShanghaiChina
- National Center for StomatologyNational Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of StomatologyShanghaiChina
| | - Lisha Pan
- College of StomatologyShanghai Jiao Tong UniversityShanghaiChina
- National Center for StomatologyNational Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of StomatologyShanghaiChina
- Department of ProsthodonticsShanghai Ninth People's Hospital, Shanghai Jiao Tong University School of MedicineShanghaiChina
| | - Meng Xiao
- Department of Oral and Maxillofacial Surgery – Head & Neck OncologyShanghai Ninth People's Hospital, Shanghai Jiao Tong University School of MedicineShanghaiChina
- College of StomatologyShanghai Jiao Tong UniversityShanghaiChina
- National Center for StomatologyNational Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of StomatologyShanghaiChina
| | - Shijian Zhang
- Department of Oral and Maxillofacial Surgery – Head & Neck OncologyShanghai Ninth People's Hospital, Shanghai Jiao Tong University School of MedicineShanghaiChina
- College of StomatologyShanghai Jiao Tong UniversityShanghaiChina
- National Center for StomatologyNational Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of StomatologyShanghaiChina
| | - Lei Wang
- Department of Oral and Maxillofacial Surgery – Head & Neck OncologyShanghai Ninth People's Hospital, Shanghai Jiao Tong University School of MedicineShanghaiChina
- College of StomatologyShanghai Jiao Tong UniversityShanghaiChina
- National Center for StomatologyNational Clinical Research Center for Oral Diseases; Shanghai Key Laboratory of StomatologyShanghaiChina
- Department of StomatologyFengcheng HospitalShanghaiChina
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Gu X, Huang C, Wang S, Deng J, Guo S, Sulitan A, Gu W, Lu Q, Yuan S, Yin X. Transcriptomic Analysis of the Rat Dorsal Root Ganglion After Fracture. Mol Neurobiol 2024; 61:1467-1478. [PMID: 37725213 DOI: 10.1007/s12035-023-03637-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2023] [Accepted: 09/04/2023] [Indexed: 09/21/2023]
Abstract
In fractures, pain signals are transmitted from the dorsal root ganglion (DRG) to the brain, and the DRG generates efferent signals to the injured bone to participate in the injury response. However, little is known about how this process occurs. We analyzed DRG transcriptome at 3, 7, 14, and 28 days after fracture. We identified the key pathways through KEGG and GO enrichment analysis. We then used IPA analysis to obtain upstream regulators and disease pathways. Finally, we compared the sequencing results with those of nerve injury to identify the unique transcriptome changes in DRG after fracture. We found that the first 14 days after fracture were the main repair response period, the 3rd day was the peak of repair activity, the 14th day was dominated by the stimulus response, and on the 28th day, the repair response had reached a plateau. ECM-receptor interaction, protein digestion and absorption, and the PI3K-Akt signaling pathway were most significantly enriched, which may be involved in repair regeneration, injury response, and pain transmission. Compared with the nerve injury model, DRG after fracture produced specific alterations related to bone repair, and the bone density function was the most widely activated bone-related function. Our results obtained some important genes and pathways in DRG after fracture, and we also summarized the main features of transcriptome function at each time point through functional annotation clustering of GO pathway, which gave us a deeper understanding of the role played by DRG in fracture.
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Affiliation(s)
- Xinyi Gu
- Department of Orthopedics and Traumatology, Peking University People's Hospital, No. 11 Xizhimen South Street, Xicheng District, Beijing, 100044, China
- Key Laboratory of Trauma and Neural Regeneration (Peking University), Beijing, 100000, China
| | - Chen Huang
- Department of Orthopedics and Traumatology, Peking University People's Hospital, No. 11 Xizhimen South Street, Xicheng District, Beijing, 100044, China
- Key Laboratory of Trauma and Neural Regeneration (Peking University), Beijing, 100000, China
| | - Shen Wang
- Department of Orthopedics and Traumatology, Peking University People's Hospital, No. 11 Xizhimen South Street, Xicheng District, Beijing, 100044, China
- Key Laboratory of Trauma and Neural Regeneration (Peking University), Beijing, 100000, China
| | - Jin Deng
- Department of Orthopedics and Traumatology, Peking University People's Hospital, No. 11 Xizhimen South Street, Xicheng District, Beijing, 100044, China
- Key Laboratory of Trauma and Neural Regeneration (Peking University), Beijing, 100000, China
| | - Shuhang Guo
- Department of Orthopedics and Traumatology, Peking University People's Hospital, No. 11 Xizhimen South Street, Xicheng District, Beijing, 100044, China
- Key Laboratory of Trauma and Neural Regeneration (Peking University), Beijing, 100000, China
| | - Aihaiti Sulitan
- School of Artificial Intelligence and Information Technology, Nanjing University of Chinese Medicine, No. 138 Xianlin Avenue, Qixia District, Nanjing, 210023, China
| | - Wanjun Gu
- School of Artificial Intelligence and Information Technology, Nanjing University of Chinese Medicine, No. 138 Xianlin Avenue, Qixia District, Nanjing, 210023, China
- Collaborative Innovation Center of Jiangsu Province of Cancer Prevention and Treatment of Chinese Medicine, Nanjing, 210023, China
| | - Qingguo Lu
- Trauma Center, Pizhou People's Hospital, Xuzhou, Jiangsu Province, 221300, China
| | - Shaoxun Yuan
- School of Artificial Intelligence and Information Technology, Nanjing University of Chinese Medicine, No. 138 Xianlin Avenue, Qixia District, Nanjing, 210023, China.
| | - Xiaofeng Yin
- Department of Orthopedics and Traumatology, Peking University People's Hospital, No. 11 Xizhimen South Street, Xicheng District, Beijing, 100044, China.
- Key Laboratory of Trauma and Neural Regeneration (Peking University), Beijing, 100000, China.
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Parker RS, Nazzal MK, Morris AJ, Fehrenbacher JC, White FA, Kacena MA, Natoli RM. Role of the Neurologic System in Fracture Healing: An Extensive Review. Curr Osteoporos Rep 2024; 22:205-216. [PMID: 38236509 PMCID: PMC10912173 DOI: 10.1007/s11914-023-00844-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 12/18/2023] [Indexed: 01/19/2024]
Abstract
PURPOSE OF REVIEW Despite advances in orthopedics, there remains a need for therapeutics to hasten fracture healing. However, little focus is given to the role the nervous system plays in regulating fracture healing. This paucity of information has led to an incomplete understanding of fracture healing and has limited the development of fracture therapies that integrate the importance of the nervous system. This review seeks to illuminate the integral roles that the nervous system plays in fracture healing. RECENT FINDINGS Preclinical studies explored several methodologies for ablating peripheral nerves to demonstrate ablation-induced deficits in fracture healing. Conversely, activation of peripheral nerves via the use of dorsal root ganglion electrical stimulation enhanced fracture healing via calcitonin gene related peptide (CGRP). Investigations into TLR-4, TrkB agonists, and nerve growth factor (NGF) expression provide valuable insights into molecular pathways influencing bone mesenchymal stem cells and fracture repair. Finally, there is continued research into the connections between pain and fracture healing with findings suggesting that anti-NGF may be able to block pain without affecting healing. This review underscores the critical roles of the central nervous system (CNS), peripheral nervous system (PNS), and autonomic nervous system (ANS) in fracture healing, emphasizing their influence on bone cells, neuropeptide release, and endochondral ossification. The use of TBI models contributes to understanding neural regulation, though the complex influence of TBI on fracture healing requires further exploration. The review concludes by addressing the neural connection to fracture pain. This review article is part of a series of multiple manuscripts designed to determine the utility of using artificial intelligence for writing scientific reviews.
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Affiliation(s)
- Reginald S Parker
- Department of Orthopaedic Surgery, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Murad K Nazzal
- Department of Orthopaedic Surgery, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Ashlyn J Morris
- Department of Orthopaedic Surgery, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Jill C Fehrenbacher
- Department of Pharmacology and Toxicology, Indiana University School of Medicine, Indianapolis, IN, USA
- Indiana Center for Musculoskeletal Health, Indiana University School of Medicine, Indianapolis, IN, USA
- Stark Neuroscience Research Institute, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Fletcher A White
- Indiana Center for Musculoskeletal Health, Indiana University School of Medicine, Indianapolis, IN, USA
- Stark Neuroscience Research Institute, Indiana University School of Medicine, Indianapolis, IN, USA
- Department of Anesthesia, Indiana University School of Medicine, Indianapolis, IN, USA
- Richard L. Roudebush VA Medical Center, Indianapolis, IN, USA
| | - Melissa A Kacena
- Department of Orthopaedic Surgery, Indiana University School of Medicine, Indianapolis, IN, USA.
- Indiana Center for Musculoskeletal Health, Indiana University School of Medicine, Indianapolis, IN, USA.
- Richard L. Roudebush VA Medical Center, Indianapolis, IN, USA.
| | - Roman M Natoli
- Department of Orthopaedic Surgery, Indiana University School of Medicine, Indianapolis, IN, USA.
- Indiana Center for Musculoskeletal Health, Indiana University School of Medicine, Indianapolis, IN, USA.
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10
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Nazzal MK, Morris AJ, Parker RS, White FA, Natoli RM, Kacena MA, Fehrenbacher JC. Do Not Lose Your Nerve, Be Callus: Insights Into Neural Regulation of Fracture Healing. Curr Osteoporos Rep 2024; 22:182-192. [PMID: 38294715 PMCID: PMC10912323 DOI: 10.1007/s11914-023-00850-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 12/21/2023] [Indexed: 02/01/2024]
Abstract
PURPOSE OF REVIEW Fractures are a prominent form of traumatic injury and shall continue to be for the foreseeable future. While the inflammatory response and the cells of the bone marrow microenvironment play significant roles in fracture healing, the nervous system is also an important player in regulating bone healing. RECENT FINDINGS Considerable evidence demonstrates a role for nervous system regulation of fracture healing in a setting of traumatic injury to the brain. Although many of the impacts of the nervous system on fracture healing are positive, pain mediated by the nervous system can have detrimental effects on mobilization and quality of life. Understanding the role the nervous system plays in fracture healing is vital to understanding fracture healing as a whole and improving quality of life post-injury. This review article is part of a series of multiple manuscripts designed to determine the utility of using artificial intelligence for writing scientific reviews.
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Affiliation(s)
- Murad K Nazzal
- Department of Orthopaedic Surgery, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Ashlyn J Morris
- Department of Orthopaedic Surgery, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Reginald S Parker
- Department of Orthopaedic Surgery, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Fletcher A White
- Indiana Center for Musculoskeletal Health, Indiana University School of Medicine, Indianapolis, IN, USA
- Department of Anesthesia, Indiana University School of Medicine, Indianapolis, IN, USA
- Stark Neuroscience Research Institute, Indiana University School of Medicine, Indianapolis, IN, USA
- Richard L. Roudebush VA Medical Center, Indianapolis, IN, USA
| | - Roman M Natoli
- Department of Orthopaedic Surgery, Indiana University School of Medicine, Indianapolis, IN, USA
- Indiana Center for Musculoskeletal Health, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Melissa A Kacena
- Department of Orthopaedic Surgery, Indiana University School of Medicine, Indianapolis, IN, USA.
- Indiana Center for Musculoskeletal Health, Indiana University School of Medicine, Indianapolis, IN, USA.
- Richard L. Roudebush VA Medical Center, Indianapolis, IN, USA.
| | - Jill C Fehrenbacher
- Indiana Center for Musculoskeletal Health, Indiana University School of Medicine, Indianapolis, IN, USA.
- Stark Neuroscience Research Institute, Indiana University School of Medicine, Indianapolis, IN, USA.
- Department of Pharmacology and Toxicology, Indiana University School of Medicine, Indianapolis, IN, USA.
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11
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Mei H, Li Z, Lv Q, Li X, Wu Y, Feng Q, Jiang Z, Zhou Y, Zheng Y, Gao Z, Zhou J, Jiang C, Huang S, Li J. Sema3A secreted by sensory nerve induces bone formation under mechanical loads. Int J Oral Sci 2024; 16:5. [PMID: 38238300 PMCID: PMC10796360 DOI: 10.1038/s41368-023-00269-6] [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: 09/06/2023] [Revised: 12/19/2023] [Accepted: 12/19/2023] [Indexed: 01/22/2024] Open
Abstract
Bone formation and deposition are initiated by sensory nerve infiltration in adaptive bone remodeling. Here, we focused on the role of Semaphorin 3A (Sema3A), expressed by sensory nerves, in mechanical loads-induced bone formation and nerve withdrawal using orthodontic tooth movement (OTM) model. Firstly, bone formation was activated after the 3rd day of OTM, coinciding with a decrease in sensory nerves and an increase in pain threshold. Sema3A, rather than nerve growth factor (NGF), highly expressed in both trigeminal ganglion and the axons of periodontal ligament following the 3rd day of OTM. Moreover, in vitro mechanical loads upregulated Sema3A in neurons instead of in human periodontal ligament cells (hPDLCs) within 24 hours. Furthermore, exogenous Sema3A restored the suppressed alveolar bone formation and the osteogenic differentiation of hPDLCs induced by mechanical overload. Mechanistically, Sema3A prevented overstretching of F-actin induced by mechanical overload through ROCK2 pathway, maintaining mitochondrial dynamics as mitochondrial fusion. Therefore, Sema3A exhibits dual therapeutic effects in mechanical loads-induced bone formation, both as a pain-sensitive analgesic and a positive regulator for bone formation.
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Affiliation(s)
- Hongxiang Mei
- State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases & West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Zhengzheng Li
- State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases & West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Qinyi Lv
- State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases & West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Xingjian Li
- State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases & West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Yumeng Wu
- State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases & West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Qingchen Feng
- State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases & West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Zhishen Jiang
- State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases & West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Yimei Zhou
- State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases & West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Yule Zheng
- State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases & West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Ziqi Gao
- State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases & West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Jiawei Zhou
- State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases & West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Chen Jiang
- State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases & West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Shishu Huang
- Department of Orthopedic Surgery and Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, China.
| | - Juan Li
- State Key Laboratory of Oral Diseases & National Center for Stomatology & National Clinical Research Center for Oral Diseases & West China Hospital of Stomatology, Sichuan University, Chengdu, China.
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12
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Gao CW, Lin W, Riddle RC, Kushwaha P, Boukas L, Björnsson HT, Hansen KD, Fahrner JA. A mouse model of Weaver syndrome displays overgrowth and excess osteogenesis reversible with KDM6A/6B inhibition. JCI Insight 2024; 9:e173392. [PMID: 38015625 PMCID: PMC10906465 DOI: 10.1172/jci.insight.173392] [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: 06/23/2023] [Accepted: 11/14/2023] [Indexed: 11/30/2023] Open
Abstract
Weaver syndrome is a Mendelian disorder of the epigenetic machinery (MDEM) caused by germline pathogenic variants in EZH2, which encodes the predominant H3K27 methyltransferase and key enzymatic component of Polycomb repressive complex 2 (PRC2). Weaver syndrome is characterized by striking overgrowth and advanced bone age, intellectual disability, and distinctive facies. We generated a mouse model for the most common Weaver syndrome missense variant, EZH2 p.R684C. Ezh2R684C/R684C mouse embryonic fibroblasts (MEFs) showed global depletion of H3K27me3. Ezh2R684C/+ mice had abnormal bone parameters, indicative of skeletal overgrowth, and Ezh2R684C/+ osteoblasts showed increased osteogenic activity. RNA-Seq comparing osteoblasts differentiated from Ezh2R684C/+, and Ezh2+/+ BM-mesenchymal stem cells (BM-MSCs) indicated collective dysregulation of the BMP pathway and osteoblast differentiation. Inhibition of the opposing H3K27 demethylases KDM6A and KDM6B substantially reversed the excessive osteogenesis in Ezh2R684C/+ cells both at the transcriptional and phenotypic levels. This supports both the ideas that writers and erasers of histone marks exist in a fine balance to maintain epigenome state and that epigenetic modulating agents have therapeutic potential for the treatment of MDEMs.
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Affiliation(s)
- Christine W. Gao
- Department of Genetic Medicine
- Department of Molecular Biology and Genetics, and
| | | | - Ryan C. Riddle
- Department of Orthopaedic Surgery, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
- Department of Orthopaedics, University of Maryland School of Medicine, Baltimore, Maryland, USA
- Research and Development Service, Baltimore Veterans Administration Medical Center, Baltimore, Maryland, USA
| | - Priyanka Kushwaha
- Department of Orthopaedic Surgery, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Leandros Boukas
- Department of Genetic Medicine
- Department of Biostatistics, Johns Hopkins University School of Public Health, Baltimore, Maryland, USA
| | - Hans T. Björnsson
- Department of Genetic Medicine
- Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
- Faculty of Medicine, University of Iceland, Reykjavík, Iceland
- Landspítali University Hospital, Reykjavík, Iceland
| | - Kasper D. Hansen
- Department of Genetic Medicine
- Department of Biostatistics, Johns Hopkins University School of Public Health, Baltimore, Maryland, USA
- Department of Biomedical Engineering, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Jill A. Fahrner
- Department of Genetic Medicine
- Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
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13
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Zhao Y, Peng X, Wang Q, Zhang Z, Wang L, Xu Y, Yang H, Bai J, Geng D. Crosstalk Between the Neuroendocrine System and Bone Homeostasis. Endocr Rev 2024; 45:95-124. [PMID: 37459436 DOI: 10.1210/endrev/bnad025] [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: 12/31/2022] [Indexed: 01/05/2024]
Abstract
The homeostasis of bone microenvironment is the foundation of bone health and comprises 2 concerted events: bone formation by osteoblasts and bone resorption by osteoclasts. In the early 21st century, leptin, an adipocytes-derived hormone, was found to affect bone homeostasis through hypothalamic relay and the sympathetic nervous system, involving neurotransmitters like serotonin and norepinephrine. This discovery has provided a new perspective regarding the synergistic effects of endocrine and nervous systems on skeletal homeostasis. Since then, more studies have been conducted, gradually uncovering the complex neuroendocrine regulation underlying bone homeostasis. Intriguingly, bone is also considered as an endocrine organ that can produce regulatory factors that in turn exert effects on neuroendocrine activities. After decades of exploration into bone regulation mechanisms, separate bioactive factors have been extensively investigated, whereas few studies have systematically shown a global view of bone homeostasis regulation. Therefore, we summarized the previously studied regulatory patterns from the nervous system and endocrine system to bone. This review will provide readers with a panoramic view of the intimate relationship between the neuroendocrine system and bone, compensating for the current understanding of the regulation patterns of bone homeostasis, and probably developing new therapeutic strategies for its related disorders.
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Affiliation(s)
- Yuhu Zhao
- Department of Orthopedics, The First Affiliated Hospital of Soochow University; Orthopedics Institute, Medical College, Soochow University, Suzhou, Jiangsu 215006, China
| | - Xiaole Peng
- Department of Orthopedics, The First Affiliated Hospital of Soochow University; Orthopedics Institute, Medical College, Soochow University, Suzhou, Jiangsu 215006, China
| | - Qing Wang
- Department of Orthopedics, The First Affiliated Hospital of Soochow University; Orthopedics Institute, Medical College, Soochow University, Suzhou, Jiangsu 215006, China
| | - Zhiyu Zhang
- Department of Hematology, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215006, China
| | - Liangliang Wang
- Department of Orthopedics, The Affiliated Changzhou No. 2 People's Hospital of Nanjing Medical University, Changzhou, Jiangsu 213000, China
| | - Yaozeng Xu
- Department of Orthopedics, The First Affiliated Hospital of Soochow University; Orthopedics Institute, Medical College, Soochow University, Suzhou, Jiangsu 215006, China
| | - Huilin Yang
- Department of Orthopedics, The First Affiliated Hospital of Soochow University; Orthopedics Institute, Medical College, Soochow University, Suzhou, Jiangsu 215006, China
| | - Jiaxiang Bai
- Department of Orthopedics, The First Affiliated Hospital of Soochow University; Orthopedics Institute, Medical College, Soochow University, Suzhou, Jiangsu 215006, China
- Department of Orthopedics, Division of Life Sciences and Medicine, The First Affiliated Hospital of USTC, University of Science and Technology of China, Hefei 230022, China
| | - Dechun Geng
- Department of Orthopedics, The First Affiliated Hospital of Soochow University; Orthopedics Institute, Medical College, Soochow University, Suzhou, Jiangsu 215006, China
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14
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Zhao L, Lai Y, Jiao H, Huang J. Nerve Growth Factor Receptor Limits Inflammation to Promote Remodeling and Repair of Osteoarthritic Joints. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.12.21.572937. [PMID: 38187570 PMCID: PMC10769345 DOI: 10.1101/2023.12.21.572937] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2024]
Abstract
Osteoarthritis (OA) is a painful, incurable disease affecting over 500 million people. The need for relieving OA pain is paramount but inadequately addressed, partly due to limited understandings of how pain signaling regulates non-neural tissues. Here we report that nerve growth factor receptor (NGFR) is upregulated in skeletal cells during OA and plays an essential role in the remodeling and repair of osteoarthritic joints. Specifically, NGFR is expressed in osteochondral cells but not in skeletal progenitor cells and induced by TNFα to attenuate NF-κB activation, maintaining proper BMP-SMAD1 signaling and suppressing RANKL expression. NGFR deficiency hyper-activates NF-κB in murine osteoarthritic joints, which impairs bone formation and enhances bone resorption as exemplified by a reduction in subchondral bone and osteophytes. In human OA cartilage, NGFR is also negatively associated with NF-κB activation. Together, this study uncovers a role of NGFR in limiting inflammation for repair of diseased skeletal tissues.
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Affiliation(s)
- Lan Zhao
- Department of Orthopedic Surgery, Rush University Medical Center, Chicago, IL, USA
- These authors contributed equally: Lan Zhao, Jian Huang
| | - Yumei Lai
- Department of Orthopedic Surgery, Rush University Medical Center, Chicago, IL, USA
| | - Hongli Jiao
- Department of Orthopedic Surgery, Rush University Medical Center, Chicago, IL, USA
| | - Jian Huang
- Department of Orthopedic Surgery, Rush University Medical Center, Chicago, IL, USA
- These authors contributed equally: Lan Zhao, Jian Huang
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15
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Cherief M, Xu J, Li Z, Tower RJ, Ramesh S, Qin Q, Gomez-Salazar M, Yea JH, Lee S, Negri S, Xu M, Price T, Kendal AR, Fan CM, Clemens TL, Levi B, James AW. TrkA-mediated sensory innervation of injured mouse tendon supports tendon sheath progenitor cell expansion and tendon repair. Sci Transl Med 2023; 15:eade4619. [PMID: 38117901 DOI: 10.1126/scitranslmed.ade4619] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Accepted: 11/29/2023] [Indexed: 12/22/2023]
Abstract
Peripheral neurons terminate at the surface of tendons partly to relay nociceptive pain signals; however, the role of peripheral nerves in tendon injury and repair remains unclear. Here, we show that after Achilles tendon injury in mice, there is new nerve growth near tendon cells that express nerve growth factor (NGF). Conditional deletion of the Ngf gene in either myeloid or mesenchymal mouse cells limited both innervation and tendon repair. Similarly, inhibition of the NGF receptor tropomyosin receptor kinase A (TrkA) abrogated tendon healing in mouse tendon injury. Sural nerve transection blocked the postinjury increase in tendon sensory innervation and the expansion of tendon sheath progenitor cells (TSPCs) expressing tubulin polymerization promoting protein family member 3. Single cell and spatial transcriptomics revealed that disruption of sensory innervation resulted in dysregulated inflammatory signaling and transforming growth factor-β (TGFβ) signaling in injured mouse tendon. Culture of mouse TSPCs with conditioned medium from dorsal root ganglia neuron further supported a role for neuronal mediators and TGFβ signaling in TSPC proliferation. Transcriptomic and histologic analyses of injured human tendon biopsy samples supported a role for innervation and TGFβ signaling in human tendon regeneration. Last, treating mice after tendon injury systemically with a small-molecule partial agonist of TrkA increased neurovascular response, TGFβ signaling, TSPC expansion, and tendon tissue repair. Although further studies should investigate the potential effects of denervation on mechanical loading of tendon, our results suggest that peripheral innervation is critical for the regenerative response after acute tendon injury.
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Affiliation(s)
- Masnsen Cherief
- Department of Pathology, Johns Hopkins University, Baltimore, MD 21205, USA
| | - Jiajia Xu
- Department of Pathology, Johns Hopkins University, Baltimore, MD 21205, USA
| | - Zhao Li
- Department of Pathology, Johns Hopkins University, Baltimore, MD 21205, USA
| | - Robert J Tower
- Center for Organogenesis and Trauma, Department of Surgery, University of Texas Southwestern, Dallas, TX 75390, USA
| | - Sowmya Ramesh
- Department of Pathology, Johns Hopkins University, Baltimore, MD 21205, USA
| | - Qizhi Qin
- Department of Pathology, Johns Hopkins University, Baltimore, MD 21205, USA
| | | | - Ji-Hye Yea
- Department of Pathology, Johns Hopkins University, Baltimore, MD 21205, USA
| | - Seungyong Lee
- Department of Pathology, Johns Hopkins University, Baltimore, MD 21205, USA
| | - Stefano Negri
- Department of Pathology, Johns Hopkins University, Baltimore, MD 21205, USA
- Department of Orthopaedics and Traumatology, University of Verona, Verona 37129, Italy
| | - Mingxin Xu
- Department of Pathology, Johns Hopkins University, Baltimore, MD 21205, USA
| | - Theodore Price
- Department of Neuroscience, Center for Advanced Pain Studies, University of Texas at Dallas, Dallas, TX 75080, USA
| | - Adrian R Kendal
- Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, Botnar Research Centre, Windmill Road, Oxford OX3 7LD, UK
| | - Chen-Ming Fan
- Department of Embryology, Carnegie Institution for Science, Baltimore, MD 21208, USA
| | - Thomas L Clemens
- Department of Orthopaedics, University of Maryland, Baltimore, MD 21205, USA
- Baltimore Veterans Administration Medical Center, Baltimore, MD 21201, USA
| | - Benjamin Levi
- Center for Organogenesis and Trauma, Department of Surgery, University of Texas Southwestern, Dallas, TX 75390, USA
| | - Aaron W James
- Department of Pathology, Johns Hopkins University, Baltimore, MD 21205, USA
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16
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Zhang H, Zhang M, Zhai D, Qin C, Wang Y, Ma J, Zhuang H, Shi Z, Wang L, Wu C. Polyhedron-Like Biomaterials for Innervated and Vascularized Bone Regeneration. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2302716. [PMID: 37434296 DOI: 10.1002/adma.202302716] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Revised: 06/16/2023] [Accepted: 07/10/2023] [Indexed: 07/13/2023]
Abstract
Neural-vascular networks are densely distributed through periosteum, cortical bone, and cancellous bone, which is of great significance for bone regeneration and remodeling. Although significant progress has been made in bone tissue engineering, ineffective bone regeneration, and delayed osteointegration still remains an issue due to the ignorance of intrabony nerves and blood vessels. Herein, inspired by space-filling polyhedra with open architectures, polyhedron-like scaffolds with spatial topologies are prepared via 3D-printing technology to mimic the meshwork structure of cancellous bone. Benefiting from its spatial topologies, polyhedron-like scaffolds greatly promoted the osteogenic differentiation of bone mesenchymal stem cells (BMSCs) via activating PI3K-Akt signals, and exhibiting satisfactory performance on angiogenesis and neurogenesis. Computational fluid dynamic (CFD) simulation elucidates that polyhedron-like scaffolds have a relatively lower area-weighted average static pressure, which is beneficial to osteogenesis. Furthermore, in vivo experiments further demonstrate that polyhedron-like scaffolds obviously promote bone formation and osteointegration, as well as inducing vascularization and ingrowth of nerves, leading to innervated and vascularized bone regeneration. Taken together, this work offers a promising approach for fabricating multifunctional scaffolds without additional exogenous seeding cells and growth factors, which holds great potential for functional tissue regeneration and further clinical translation.
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Affiliation(s)
- Hongjian Zhang
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, P. R. China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Meng Zhang
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, P. R. China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Dong Zhai
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, P. R. China
| | - Chen Qin
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, P. R. China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Yufeng Wang
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, P. R. China
| | - Jingge Ma
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, P. R. China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Hui Zhuang
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, P. R. China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Zhe Shi
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, P. R. China
| | - Liang Wang
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, P. R. China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Chengtie Wu
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, P. R. China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
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17
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Xiao Y, Han C, Wang Y, Zhang X, Bao R, Li Y, Chen H, Hu B, Liu S. Interoceptive regulation of skeletal tissue homeostasis and repair. Bone Res 2023; 11:48. [PMID: 37669953 PMCID: PMC10480189 DOI: 10.1038/s41413-023-00285-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 05/08/2023] [Accepted: 06/22/2023] [Indexed: 09/07/2023] Open
Abstract
Recent studies have determined that the nervous system can sense and respond to signals from skeletal tissue, a process known as skeletal interoception, which is crucial for maintaining bone homeostasis. The hypothalamus, located in the central nervous system (CNS), plays a key role in processing interoceptive signals and regulating bone homeostasis through the autonomic nervous system, neuropeptide release, and neuroendocrine mechanisms. These mechanisms control the differentiation of mesenchymal stem cells into osteoblasts (OBs), the activation of osteoclasts (OCs), and the functional activities of bone cells. Sensory nerves extensively innervate skeletal tissues, facilitating the transmission of interoceptive signals to the CNS. This review provides a comprehensive overview of current research on the generation and coordination of skeletal interoceptive signals by the CNS to maintain bone homeostasis and their potential role in pathological conditions. The findings expand our understanding of intersystem communication in bone biology and may have implications for developing novel therapeutic strategies for bone diseases.
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Affiliation(s)
- Yao Xiao
- Department of Orthopaedics, Shanghai Jiao Tong University School of Medicine Affiliated Sixth People's Hospital, 600 Yishan Rd, Shanghai, 200233, PR China
| | - Changhao Han
- Department of Orthopaedics, Shanghai Jiao Tong University School of Medicine Affiliated Sixth People's Hospital, 600 Yishan Rd, Shanghai, 200233, PR China
| | - Yunhao Wang
- Spine Center, Department of Orthopedics, Changzheng Hospital, Naval Medical University, Shanghai, 200003, PR China
| | - Xinshu Zhang
- Department of Orthopaedics, Shanghai Jiao Tong University School of Medicine Affiliated Sixth People's Hospital, 600 Yishan Rd, Shanghai, 200233, PR China
| | - Rong Bao
- Department of Orthopaedics, Shanghai Jiao Tong University School of Medicine Affiliated Sixth People's Hospital, 600 Yishan Rd, Shanghai, 200233, PR China
| | - Yuange Li
- Department of Orthopaedics, Shanghai Jiao Tong University School of Medicine Affiliated Sixth People's Hospital, 600 Yishan Rd, Shanghai, 200233, PR China
| | - Huajiang Chen
- Spine Center, Department of Orthopedics, Changzheng Hospital, Naval Medical University, Shanghai, 200003, PR China
| | - Bo Hu
- Spine Center, Department of Orthopedics, Changzheng Hospital, Naval Medical University, Shanghai, 200003, PR China.
| | - Shen Liu
- Department of Orthopaedics, Shanghai Jiao Tong University School of Medicine Affiliated Sixth People's Hospital, 600 Yishan Rd, Shanghai, 200233, PR China.
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18
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Miao L, Qing SW, Tao L. Huntingtin-associated protein 1 ameliorates neurological function rehabilitation by facilitating neurite elongation through TrKA-MAPK pathway in mice spinal cord injury. Front Mol Neurosci 2023; 16:1214150. [PMID: 37609072 PMCID: PMC10442162 DOI: 10.3389/fnmol.2023.1214150] [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: 04/29/2023] [Accepted: 07/24/2023] [Indexed: 08/24/2023] Open
Abstract
Aims Huntingtin-associated protein 1 (HAP1) is a neuronal protein closely associated with microtubules and might facilitate neurological function rehabilitation. This study aimed to investigate the effects of HAP1 on SCI and the underlying mechanisms. Methods the spinal cord injury (SCI) mouse model was induced by Allen's method. Then recombinant-HAP1 (r-HAP1) was administrated by intrathecal injection, and the BMS, Thermal nociceptive thresholds, tactile nociceptive thresholds, and neurofibrillary regeneration were identified to inspect the therapy outcome. Then NSCs were isolated from mice on embryonic day 14.5 and induced to differentiate into neurons. The efficiency of axon growth was calculated. Signaling pathway array was conducted to examine the signaling pathways in NSCs treated with r-HAP1. Antagonists and activators of TrkA were used to confirm the role of TrkA of HAP1 intervention both in vitro and in vivo. Results r-HAP1 ameliorates the neurological function rehabilitation after SCI, and benefits the regain of Tuj in injury spinal cord. Also significantly enhances neurite growth during neuronal differentiation of NSCs; Signaling pathway array and Western blot revealed that r-HAP1 significantly activates the phosphorylation of TrkA-MAPK/ERK in NSCs. TrkA selective inhibitor GW441756 blocks r-HAP1 on TrkA-MAPK/ERK signaling pathway and detracts from axonal growth after neuronal differentiation. TrkA selective activator gambogic amide can mimic the function of r-HAP1 by activating the foregoing pathway. ERK activator U-46619 reverses the blocking effect of GW441756 on r-HAP1. Conclusion HAP1 activates the TrkA-MAPK signaling pathway and is conducive to neurite elongation during NSC neuronal differentiation; by which to improve the prognosis of spinal cord injury in mice.
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Affiliation(s)
- Li Miao
- Department of Orthopedics, Hunan Children's Hospital, Changsha, China
- The School of Pediatrics, Hengyang Medical School, University of South China, Changsha, China
- Key Laboratory of Pediatric Bone Science of Hunan Province, Changsha, China
| | - Sun Wan Qing
- Hunan Rehabilitation Hospital Third Internal Department, Changsha, China
| | - Lu Tao
- Department of Neurosurgery, Changde Hospital, Xiangya School of Medicine, Central South University, Changde, China
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19
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Zheng XQ, Huang J, Lin JL, Song CL. Pathophysiological mechanism of acute bone loss after fracture. J Adv Res 2023; 49:63-80. [PMID: 36115662 PMCID: PMC10334135 DOI: 10.1016/j.jare.2022.08.019] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2021] [Revised: 07/29/2022] [Accepted: 08/31/2022] [Indexed: 10/14/2022] Open
Abstract
BACKGROUND Acute bone loss after fracture is associated with various effects on the complete recovery process and a risk of secondary fractures among patients. Studies have reported similarities in pathophysiological mechanisms involved in acute bone loss after fractures and osteoporosis. However, given the silence nature of bone loss and bone metabolism complexities, the actual underlying pathophysiological mechanisms have yet to be fully elucidated. AIM OF REVIEW To elaborate the latest findings in basic research with a focus on acute bone loss after fracture. To briefly highlight potential therapeutic targets and current representative drugs. To arouse researchers' attention and discussion on acute bone loss after fracture. KEY SCIENTIFIC CONCEPTS OF REVIEW Bone loss after fracture is associated with immobilization, mechanical unloading, blood supply damage, sympathetic nerve regulation, and crosstalk between musculoskeletals among other factors. Current treatment strategies rely on regulation of osteoblasts and osteoclasts, therefore, there is a need to elucidate on the underlying mechanisms of acute bone loss after fractures to inform the development of efficacious and safe drugs. In addition, attention should be paid towards ensuring long-term skeletal health.
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Affiliation(s)
- Xuan-Qi Zheng
- Department of Orthopaedics, Peking University Third Hospital, Beijing, China
| | - Jie Huang
- Department of Orthopaedics, Peking University Third Hospital, Beijing, China
| | - Jia-Liang Lin
- Department of Orthopaedics, Peking University Third Hospital, Beijing, China
| | - Chun-Li Song
- Department of Orthopaedics, Peking University Third Hospital, Beijing, China; Beijing Key Laboratory of Spinal Disease Research, Beijing, China.
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20
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Watanabe H, Maishi N, Hoshi-Numahata M, Nishiura M, Nakanishi-Kimura A, Hida K, Iimura T. Skeletal-Vascular Interactions in Bone Development, Homeostasis, and Pathological Destruction. Int J Mol Sci 2023; 24:10912. [PMID: 37446097 DOI: 10.3390/ijms241310912] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2023] [Revised: 06/28/2023] [Accepted: 06/28/2023] [Indexed: 07/15/2023] Open
Abstract
Bone is a highly vascularized organ that not only plays multiple roles in supporting the body and organs but also endows the microstructure, enabling distinct cell lineages to reciprocally interact. Recent studies have uncovered relevant roles of the bone vasculature in bone patterning, morphogenesis, homeostasis, and pathological bone destruction, including osteoporosis and tumor metastasis. This review provides an overview of current topics in the interactive molecular events between endothelial cells and bone cells during bone ontogeny and discusses the future direction of this research area to find novel ways to treat bone diseases.
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Affiliation(s)
- Haruhisa Watanabe
- Department of Pharmacology, Faculty and Graduate School of Dental Medicine, Hokkaido University, N13 W7, Sapporo 060-8586, Hokkaido, Japan
| | - Nako Maishi
- Department of Vascular Biology, Faculty and Graduate School of Dental Medicine, Hokkaido University, N13 W7, Sapporo 060-8586, Hokkaido, Japan
| | - Marie Hoshi-Numahata
- Department of Pharmacology, Faculty and Graduate School of Dental Medicine, Hokkaido University, N13 W7, Sapporo 060-8586, Hokkaido, Japan
| | - Mai Nishiura
- Department of Pharmacology, Faculty and Graduate School of Dental Medicine, Hokkaido University, N13 W7, Sapporo 060-8586, Hokkaido, Japan
| | - Atsuko Nakanishi-Kimura
- Department of Pharmacology, Faculty and Graduate School of Dental Medicine, Hokkaido University, N13 W7, Sapporo 060-8586, Hokkaido, Japan
| | - Kyoko Hida
- Department of Vascular Biology, Faculty and Graduate School of Dental Medicine, Hokkaido University, N13 W7, Sapporo 060-8586, Hokkaido, Japan
| | - Tadahiro Iimura
- Department of Pharmacology, Faculty and Graduate School of Dental Medicine, Hokkaido University, N13 W7, Sapporo 060-8586, Hokkaido, Japan
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21
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Gao CW, Lin W, Riddle RC, Kushwaha P, Boukas L, Björnsson HT, Hansen KD, Fahrner JA. Novel mouse model of Weaver syndrome displays overgrowth and excess osteogenesis reversible with KDM6A/6B inhibition. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.06.23.546270. [PMID: 37425751 PMCID: PMC10327066 DOI: 10.1101/2023.06.23.546270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/11/2023]
Abstract
Weaver syndrome is a Mendelian disorder of the epigenetic machinery (MDEM) caused by germline pathogenic variants in EZH2, which encodes the predominant H3K27 methyltransferase and key enzymatic component of Polycomb repressive complex 2 (PRC2). Weaver syndrome is characterized by striking overgrowth and advanced bone age, intellectual disability, and distinctive facies. We generated a mouse model for the most common Weaver syndrome missense variant, EZH2 p.R684C. Ezh2R684C/R684C mouse embryonic fibroblasts (MEFs) showed global depletion of H3K27me3. Ezh2R684C/+ mice had abnormal bone parameters indicative of skeletal overgrowth, and Ezh2R684C/+ osteoblasts showed increased osteogenic activity. RNA-seq comparing osteoblasts differentiated from Ezh2R684C/+ and Ezh2+/+ bone marrow mesenchymal stem cells (BM-MSCs) indicated collective dysregulation of the BMP pathway and osteoblast differentiation. Inhibition of the opposing H3K27 demethylases Kdm6a/6b substantially reversed the excessive osteogenesis in Ezh2R684C/+ cells both at the transcriptional and phenotypic levels. This supports both the ideas that writers and erasers of histone marks exist in a fine balance to maintain epigenome state, and that epigenetic modulating agents have therapeutic potential for the treatment of MDEMs.
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Affiliation(s)
- Christine W Gao
- Department of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, MD
- Department of Molecular Biology and Genetics, Johns Hopkins University School of Medicine, Baltimore, MD
| | - WanYing Lin
- Department of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, MD
| | - Ryan C Riddle
- Department of Orthopaedic Surgery, Johns Hopkins University School of Medicine, Baltimore, MD
- Department of Orthopaedics, University of Maryland School of Medicine, Baltimore, MD
- Research and Development Service, Baltimore Veterans Administration Medical Center, Baltimore, MD
| | - Priyanka Kushwaha
- Department of Orthopaedic Surgery, Johns Hopkins University School of Medicine, Baltimore, MD
| | - Leandros Boukas
- Department of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, MD
- Department of Biostatistics, Johns Hopkins University School of Public Health, Baltimore, MD
| | - Hans T Björnsson
- Department of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, MD
- Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, MD
- Faculty of Medicine, University of Iceland, Reykjavík, Iceland
- Landspítali University Hospital, Reykjavík, Iceland
| | - Kasper D Hansen
- Department of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, MD
- Department of Biostatistics, Johns Hopkins University School of Public Health, Baltimore, MD
| | - Jill A Fahrner
- Department of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, MD
- Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, MD
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22
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Wee NKY, Novak S, Ghosh D, Root SH, Dickerson IM, Kalajzic I. Inhibition of CGRP signaling impairs fracture healing in mice. J Orthop Res 2023; 41:1228-1239. [PMID: 36281531 PMCID: PMC10123175 DOI: 10.1002/jor.25474] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 09/06/2022] [Accepted: 10/18/2022] [Indexed: 02/04/2023]
Abstract
Calcitonin gene-related peptide (CGRP) is a neuropeptide produced by sensory nerves and functions as a pain sensor. It acts by binding to the calcitonin-like receptor (CLR, protein; Calcrl, gene). CGRP inhibition has been recently introduced as therapeutic treatment of migraine-associated pain. Previous studies have shown that CGRP stimulates bone formation. The aim of our study is to determine whether the inhibition of CGRP signaling negatively impacted fracture healing. Using α-smooth muscle actin (αSMA) Cre animals crossed with Ai9 reporter mice, we showed that CGRP-expressing nerves are near αSMA + cells in the periosteum. In vitro experiments revealed that periosteal cells express Calcrl and receptor activity modifying protein 1; and CGRP stimulation increased periosteal cell proliferation. Using a tamoxifen-inducible model αSMACre/CLRfl/fl , we targeted the deletion of CLR to periosteal progenitor cells and examined fracture healing. Microcomputed tomography of fractured femurs showed a reduction in bone mass in αSMACre+/CLRfl/fl female mice relative to controls and callus volume in males. Pharmacological CGRP-CLR inhibition was achieved by subcutaneous delivery of customized pellets with small molecule inhibitor olcegepant (BIBN-4096) at a dose of 10 μg/day. BIBN-4096-treated C57BL/6J mice had a higher latency toward thermal nociception than placebo-treated mice, indicating impaired sensory function through CGRP inhibition. CGRP inhibition also resulted in reduced callus volume, bone mass, and bone strength compared to placebo controls. These results indicate that inhibiting CGRP by deleting CLR or by using BIBN-4096, contributes to delayed bone healing.
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Affiliation(s)
- Natalie KY Wee
- Department of Reconstructive Sciences, University of Connecticut Health Center, Farmington, CT 06030, USA
- Bone Cell Biology and Disease Unit, St Vincent’s Institute of Medical Research, Fitzroy, VIC 3065, Australia
| | - Sanja Novak
- Department of Reconstructive Sciences, University of Connecticut Health Center, Farmington, CT 06030, USA
| | - Debolina Ghosh
- Department of Reconstructive Sciences, University of Connecticut Health Center, Farmington, CT 06030, USA
| | - Sierra H Root
- Department of Reconstructive Sciences, University of Connecticut Health Center, Farmington, CT 06030, USA
| | - Ian M Dickerson
- Department of Neuroscience, University of Rochester Medical Center, Rochester, NY 14642, USA
| | - Ivo Kalajzic
- Department of Reconstructive Sciences, University of Connecticut Health Center, Farmington, CT 06030, USA
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23
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Rivera KO, Cuylear DL, Duke VR, O’Hara KM, Zhong JX, Elghazali NA, Finbloom JA, Kharbikar BN, Kryger AN, Miclau T, Marcucio RS, Bahney CS, Desai TA. Encapsulation of β-NGF in injectable microrods for localized delivery accelerates endochondral fracture repair. Front Bioeng Biotechnol 2023; 11:1190371. [PMID: 37284244 PMCID: PMC10241161 DOI: 10.3389/fbioe.2023.1190371] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Accepted: 05/02/2023] [Indexed: 06/08/2023] Open
Abstract
Introduction: Currently, there are no non-surgical FDA-approved biological approaches to accelerate fracture repair. Injectable therapies designed to stimulate bone healing represent an exciting alternative to surgically implanted biologics, however, the translation of effective osteoinductive therapies remains challenging due to the need for safe and effective drug delivery. Hydrogel-based microparticle platforms may be a clinically relevant solution to create controlled and localized drug delivery to treat bone fractures. Here, we describe poly (ethylene glycol) dimethacrylate (PEGDMA)-based microparticles, in the shape of microrods, loaded with beta nerve growth factor (β-NGF) for the purpose of promoting fracture repair. Methods: Herein, PEGDMA microrods were fabricated through photolithography. PEGDMA microrods were loaded with β-NGF and in vitro release was examined. Subsequently, bioactivity assays were evaluated in vitro using the TF-1 tyrosine receptor kinase A (Trk-A) expressing cell line. Finally, in vivo studies using our well-established murine tibia fracture model were performed and a single injection of the β-NGF loaded PEGDMA microrods, non-loaded PEGDMA microrods, or soluble β-NGF was administered to assess the extent of fracture healing using Micro-computed tomography (µCT) and histomorphometry. Results: In vitro release studies showed there is significant retention of protein within the polymer matrix over 168 hours through physiochemical interactions. Bioactivity of protein post-loading was confirmed with the TF-1 cell line. In vivo studies using our murine tibia fracture model show that PEGDMA microrods injected at the site of fracture remained adjacent to the callus for over 7 days. Importantly, a single injection of β-NGF loaded PEGDMA microrods resulted in improved fracture healing as indicated by a significant increase in the percent bone in the fracture callus, trabecular connective density, and bone mineral density relative to soluble β-NGF control indicating improved drug retention within the tissue. The concomitant decrease in cartilage fraction supports our prior work showing that β-NGF promotes endochondral conversion of cartilage to bone to accelerate healing. Discussion: We demonstrate a novel and translational method wherein β-NGF can be encapsulated within PEGDMA microrods for local delivery and that β-NGF bioactivity is maintained resulting in improved bone fracture repair.
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Affiliation(s)
- Kevin O. Rivera
- Graduate Program in Oral and Craniofacial Sciences, School of Dentistry, University of California, San Francisco (UCSF), San Francisco, CA, United States
- Department of Orthopaedic Surgery, Orthopaedic Trauma Institute, University of California, San Francisco (UCSF), San Francisco, CA, United States
- Department of Bioengineering and Therapeutic Sciences, University of California, San Francisco (UCSF), San Francisco, CA, United States
| | - Darnell L. Cuylear
- Graduate Program in Oral and Craniofacial Sciences, School of Dentistry, University of California, San Francisco (UCSF), San Francisco, CA, United States
- Department of Bioengineering and Therapeutic Sciences, University of California, San Francisco (UCSF), San Francisco, CA, United States
| | - Victoria R. Duke
- Center for Regenerative and Personalized Medicine, The Steadman Philippon Research Institute (SPRI), Vail, CO, United States
| | - Kelsey M. O’Hara
- Center for Regenerative and Personalized Medicine, The Steadman Philippon Research Institute (SPRI), Vail, CO, United States
| | - Justin X. Zhong
- Department of Bioengineering and Therapeutic Sciences, University of California, San Francisco (UCSF), San Francisco, CA, United States
- UC Berkeley—UCSF Graduate Program in Bioengineering, San Francisco, CA, United States
| | - Nafisa A. Elghazali
- Department of Bioengineering and Therapeutic Sciences, University of California, San Francisco (UCSF), San Francisco, CA, United States
- UC Berkeley—UCSF Graduate Program in Bioengineering, San Francisco, CA, United States
| | - Joel A. Finbloom
- Department of Bioengineering and Therapeutic Sciences, University of California, San Francisco (UCSF), San Francisco, CA, United States
| | - Bhushan N. Kharbikar
- Department of Bioengineering and Therapeutic Sciences, University of California, San Francisco (UCSF), San Francisco, CA, United States
| | - Alex N. Kryger
- School of Dentistry, University of California, San Francisco (UCSF), San Francisco, CA, United States
| | - Theodore Miclau
- Department of Orthopaedic Surgery, Orthopaedic Trauma Institute, University of California, San Francisco (UCSF), San Francisco, CA, United States
| | - Ralph S. Marcucio
- Department of Orthopaedic Surgery, Orthopaedic Trauma Institute, University of California, San Francisco (UCSF), San Francisco, CA, United States
| | - Chelsea S. Bahney
- Graduate Program in Oral and Craniofacial Sciences, School of Dentistry, University of California, San Francisco (UCSF), San Francisco, CA, United States
- Department of Orthopaedic Surgery, Orthopaedic Trauma Institute, University of California, San Francisco (UCSF), San Francisco, CA, United States
- Center for Regenerative and Personalized Medicine, The Steadman Philippon Research Institute (SPRI), Vail, CO, United States
- UC Berkeley—UCSF Graduate Program in Bioengineering, San Francisco, CA, United States
| | - Tejal A. Desai
- Graduate Program in Oral and Craniofacial Sciences, School of Dentistry, University of California, San Francisco (UCSF), San Francisco, CA, United States
- Department of Bioengineering and Therapeutic Sciences, University of California, San Francisco (UCSF), San Francisco, CA, United States
- Department of Bioengineering, University of California, Berkeley (UC Berkeley), Berkeley, CA, United States
- School of Engineering, Brown University, Providence, RI, United States
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24
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Liu H, Wada A, Le I, Le PT, Lee AWF, Zhou J, Gori F, Baron R, Rosen CJ. PTH regulates osteogenesis and suppresses adipogenesis through Zfp467 in a feed-forward, PTH1R-cyclic AMP-dependent manner. eLife 2023; 12:e83345. [PMID: 37159501 PMCID: PMC10171860 DOI: 10.7554/elife.83345] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Accepted: 04/25/2023] [Indexed: 05/11/2023] Open
Abstract
Conditional deletion of the PTH1R in mesenchymal progenitors reduces osteoblast differentiation, enhances marrow adipogenesis, and increases zinc finger protein 467 (Zfp467) expression. In contrast, genetic loss of Zfp467 increased Pth1r expression and shifts mesenchymal progenitor cell fate toward osteogenesis and higher bone mass. PTH1R and ZFP467 could constitute a feedback loop that facilitates PTH-induced osteogenesis and that conditional deletion of Zfp467 in osteogenic precursors would lead to high bone mass in mice. Prrx1Cre; Zfp467fl/fl but not AdipoqCre; Zfp467fl/fl mice exhibit high bone mass and greater osteogenic differentiation similar to the Zfp467-/- mice. qPCR results revealed that PTH suppressed Zfp467 expression primarily via the cyclic AMP/PKA pathway. Not surprisingly, PKA activation inhibited the expression of Zfp467 and gene silencing of Pth1r caused an increase in Zfp467 mRNA transcription. Dual fluorescence reporter assays and confocal immunofluorescence demonstrated that genetic deletion of Zfp467 resulted in higher nuclear translocation of NFκB1 that binds to the P2 promoter of the Pth1r and increased its transcription. As expected, Zfp467-/- cells had enhanced production of cyclic AMP and increased glycolysis in response to exogenous PTH. Additionally, the osteogenic response to PTH was also enhanced in Zfp467-/- COBs, and the pro-osteogenic effect of Zfp467 deletion was blocked by gene silencing of Pth1r or a PKA inhibitor. In conclusion, our findings suggest that loss or PTH1R-mediated repression of Zfp467 results in a pathway that increases Pth1r transcription via NFκB1 and thus cellular responsiveness to PTH/PTHrP, ultimately leading to enhanced bone formation.
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Affiliation(s)
- Hanghang Liu
- Maine Medical Center Research Institute, Maine Medical CenterScarboroughUnited States
- West China Hospital of Stomatology, Sichuan UniversitySichuanChina
| | - Akane Wada
- Division of Bone and Mineral Research, Dept of Oral Medicine, Infection and Immunity, Harvard School of Dental MedicineBostonUnited States
- Harvard Medical School, Department of Medicine and Endocrine Unit, Massachusetts General HospitalBostonUnited States
| | - Isabella Le
- Maine Medical Center Research Institute, Maine Medical CenterScarboroughUnited States
- Graduate Medical Sciences, Boston University School of MedicineBostonUnited States
| | - Phuong T Le
- Maine Medical Center Research Institute, Maine Medical CenterScarboroughUnited States
| | - Andrew WF Lee
- Maine Medical Center Research Institute, Maine Medical CenterScarboroughUnited States
- University of New England, College of Osteopathic MedicineBiddefordUnited States
| | - Jun Zhou
- Division of Bone and Mineral Research, Dept of Oral Medicine, Infection and Immunity, Harvard School of Dental MedicineBostonUnited States
- Harvard Medical School, Department of Medicine and Endocrine Unit, Massachusetts General HospitalBostonUnited States
| | - Francesca Gori
- Division of Bone and Mineral Research, Dept of Oral Medicine, Infection and Immunity, Harvard School of Dental MedicineBostonUnited States
| | - Roland Baron
- Division of Bone and Mineral Research, Dept of Oral Medicine, Infection and Immunity, Harvard School of Dental MedicineBostonUnited States
- Harvard Medical School, Department of Medicine and Endocrine Unit, Massachusetts General HospitalBostonUnited States
| | - Clifford J Rosen
- Maine Medical Center Research Institute, Maine Medical CenterScarboroughUnited States
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25
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Rajpar I, Kumar G, Fortina P, Tomlinson RE. Toll-like receptor 4 signaling in osteoblasts is required for load-induced bone formation in mice. iScience 2023; 26:106304. [PMID: 36950122 PMCID: PMC10025993 DOI: 10.1016/j.isci.2023.106304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2022] [Revised: 01/06/2023] [Accepted: 02/24/2023] [Indexed: 03/06/2023] Open
Abstract
In mature bone, NGF is produced by osteoblasts following mechanical loading and signals through resident sensory nerves expressing its high affinity receptor, neurotrophic tyrosine kinase receptor type 1 (TrkA), to support bone formation. Here, we investigated whether osteoblastic expression of Toll-like receptor 4 (TLR4), a key receptor in the NF-κB signaling pathway, is required to initiate NGF-TrkA signaling required for load-induced bone formation. Although Tlr4 conditional knockout mice have normal skeletal mass and strength in adulthood, the loss of TLR4 signaling significantly reduced lamellar bone formation following loading. Inhibition of TLR4 signaling reduced Ngf expression in primary osteoblasts and RNA sequencing of bones from Tlr4 conditional knockout mice and wild-type littermates revealed dysregulated inflammatory signaling three days after osteogenic mechanical loading. In total, our study reveals an important role for osteoblastic TLR4 in the skeletal adaptation of bone to mechanical forces.
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Affiliation(s)
- Ibtesam Rajpar
- Department of Orthopaedic Surgery, Thomas Jefferson University, Philadelphia, PA, USA
| | - Gaurav Kumar
- Department of Cancer Biology, Thomas Jefferson University, Philadelphia, PA, USA
| | - Paolo Fortina
- Department of Cancer Biology, Thomas Jefferson University, Philadelphia, PA, USA
| | - Ryan E. Tomlinson
- Department of Orthopaedic Surgery, Thomas Jefferson University, Philadelphia, PA, USA
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26
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Liu S, Liu S, Li S, Liang B, Han X, Liang Y, Wei X. Nerves within bone and their application in tissue engineering of bone regeneration. Front Neurol 2023; 13:1085560. [PMID: 36818724 PMCID: PMC9933508 DOI: 10.3389/fneur.2022.1085560] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Accepted: 12/02/2022] [Indexed: 02/05/2023] Open
Abstract
Nerves within bone play an irreplaceable role in promoting bone regeneration. Crosstalk between the nerve system and bone has arisen to the attention of researchers in the field of basic medicine, clinical medicine, and biomaterials science. Successful bone regeneration relies on the appropriate participation of neural system components including nerve fibers, signaling molecules, and neural-related cells. Furthermore, more about the mechanisms through which nerves took part in bone regeneration and how these mechanisms could be integrated into tissue engineering scaffolds were under exploration. In the present review, we aimed to systematically elaborate on the structural and functional interrelationship between the nerve system and bone. In particular, peripheral nerves interact with the bone through innervated axons, multiple neurotrophins, and bone resident cells. Also, we aimed to summarize research that took advantage of the neuro-osteogenic network to design tissue engineering scaffolds for bone repair.
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27
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Mei H, Wu Y, Feng Q, Li X, Zhou J, Jiang F, Huang S, Li J. The interplay between the nerves and skeleton: a 30-year bibliometric analysis. ANNALS OF TRANSLATIONAL MEDICINE 2023; 11:9. [PMID: 36760256 PMCID: PMC9906194 DOI: 10.21037/atm-22-3323] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Accepted: 10/18/2022] [Indexed: 01/15/2023]
Abstract
Background The mechanisms and effects of the interplay between the nerves and skeleton remain a popular research topic. This study aimed to analyze and evaluate publications on nerve-bone interactions using bibliometrics and to identify the state of the art of current research, hotspots, and future directions. Methods This study included 1989 articles and reviews from the Web of Science Core Collection (WoSCC) published from January 1, 1991, to June 22, 2022. The Bibliometrix package of R 4.2.0 (The R Foundation for Statistical Computing, Vienna, Austria) was used to analyze basic information about the publications, including the annual number of publications, institution analysis, author influence analysis, journal analysis, and the national cooperation network. We also used CiteSpace 5.8.R3 for bibliometric analysis, including co-occurrence, co-citation, and cluster analysis. Results We discovered a significant increase in the number of articles on nerve-bone interactions published over the last 10 years. The most active country and institution were the United States and the University of Minnesota, respectively. In terms of journals and cocited journals, Bone was ranked highest with respect to the number of publications, while Journal of Bone and Mineral Research was ranked highest among cited journals. Wang Lei was the author with the most publications, and Bjurholm A was the most cited author. The analysis of references and keywords revealed that the impact of nerve- and neuromodulation-related factors on stem cell differentiation was a persistently hot topic. Osteoarthritis, neuropeptide Y, and osteoclastogenic process are likely to be the next era of research hotspots. The neurovascular crosstalk within bone has received great attention, especially in skeletal diseases, which may provide potential targets for future treatments. Conclusions We used a bibliometric method to provide an efficient, objective, and comprehensive assessment of existing research about the interplay between the skeletal and nervous systems and to accurately identify hotspots and research frontiers, providing valuable information for future research.
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Affiliation(s)
- Hongxiang Mei
- State Key Laboratory of Oral Diseases, National Center of Stomatology, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Yumeng Wu
- State Key Laboratory of Oral Diseases, National Center of Stomatology, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Qingchen Feng
- State Key Laboratory of Oral Diseases, National Center of Stomatology, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Xingjian Li
- State Key Laboratory of Oral Diseases, National Center of Stomatology, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Jiawei Zhou
- State Key Laboratory of Oral Diseases, National Center of Stomatology, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Fulin Jiang
- State Key Laboratory of Oral Diseases, National Center of Stomatology, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Shishu Huang
- Department of Orthopedic Surgery and Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, China
| | - Juan Li
- State Key Laboratory of Oral Diseases, National Center of Stomatology, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
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28
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Haroun R, Wood JN, Sikandar S. Mechanisms of cancer pain. FRONTIERS IN PAIN RESEARCH (LAUSANNE, SWITZERLAND) 2023; 3:1030899. [PMID: 36688083 PMCID: PMC9845956 DOI: 10.3389/fpain.2022.1030899] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Accepted: 11/14/2022] [Indexed: 01/05/2023]
Abstract
Personalised and targeted interventions have revolutionised cancer treatment and dramatically improved survival rates in recent decades. Nonetheless, effective pain management remains a problem for patients diagnosed with cancer, who continue to suffer from the painful side effects of cancer itself, as well as treatments for the disease. This problem of cancer pain will continue to grow with an ageing population and the rapid advent of more effective therapeutics to treat the disease. Current pain management guidelines from the World Health Organisation are generalised for different pain severities, but fail to address the heterogeneity of mechanisms in patients with varying cancer types, stages of disease and treatment plans. Pain is the most common complaint leading to emergency unit visits by patients with cancer and over one-third of patients that have been diagnosed with cancer will experience under-treated pain. This review summarises preclinical models of cancer pain states, with a particular focus on cancer-induced bone pain and chemotherapy-associated pain. We provide an overview of how preclinical models can recapitulate aspects of pain and sensory dysfunction that is observed in patients with persistent cancer-induced bone pain or neuropathic pain following chemotherapy. Peripheral and central nervous system mechanisms of cancer pain are discussed, along with key cellular and molecular mediators that have been highlighted in animal models of cancer pain. These include interactions between neuronal cells, cancer cells and non-neuronal cells in the tumour microenvironment. Therapeutic targets beyond opioid-based management are reviewed for the treatment of cancer pain.
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Affiliation(s)
- Rayan Haroun
- Division of Medicine, Wolfson Institute of Biomedical Research, University College London, London, UnitedKingdom
| | - John N Wood
- Division of Medicine, Wolfson Institute of Biomedical Research, University College London, London, UnitedKingdom
| | - Shafaq Sikandar
- William Harvey Research Institute, Barts and the London School of Medicine and Dentistry, Queen Mary University of London, London, United Kingdom,Correspondence: Shafaq Sikandar
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29
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Marcucio R, Miclau T, Bahney C. A Shifting Paradigm: Transformation of Cartilage to Bone during Bone Repair. J Dent Res 2023; 102:13-20. [PMID: 36303415 PMCID: PMC9791286 DOI: 10.1177/00220345221125401] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
While formation and regeneration of the skeleton have been studied for a long period of time, significant scientific advances in this field continue to emerge based on an unmet clinical need to improve options to promote bone repair. In this review, we discuss the relationship between mechanisms of bone formation and bone regeneration. Data clearly show that regeneration is not simply a reinduction of the molecular and cellular programs that were used for development. Instead, the mechanical environment exerts a strong influence on the mode of repair, while during development, cell-intrinsic processes drive the mode of skeletal formation. A major advance in the field has shown that cell fate is flexible, rather than terminal, and that chondrocytes are able to differentiate into osteoblasts and other cell types during development and regeneration. This is discussed in a larger context of regeneration in vertebrates as well as the clinical implication that this shift in understanding presents.
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Affiliation(s)
- R.S. Marcucio
- University of California, San Francisco (UCSF), Orthopaedic Trauma Institute, San Francisco, CA, USA
| | - T. Miclau
- University of California, San Francisco (UCSF), Orthopaedic Trauma Institute, San Francisco, CA, USA
| | - C.S. Bahney
- University of California, San Francisco (UCSF), Orthopaedic Trauma Institute, San Francisco, CA, USA
- Steadman Philippon Research Institute, Vail, CO, USA
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30
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Neural Regeneration in Regenerative Endodontic Treatment: An Overview and Current Trends. Int J Mol Sci 2022; 23:ijms232415492. [PMID: 36555133 PMCID: PMC9779866 DOI: 10.3390/ijms232415492] [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: 10/28/2022] [Revised: 11/24/2022] [Accepted: 12/01/2022] [Indexed: 12/12/2022] Open
Abstract
Pulpal and periapical diseases are the most common dental diseases. The traditional treatment is root canal therapy, which achieves satisfactory therapeutic outcomes-especially for mature permanent teeth. Apexification, pulpotomy, and pulp revascularization are common techniques used for immature permanent teeth to accelerate the development of the root. However, there are obstacles to achieving functional pulp regeneration. Recently, two methods have been proposed based on tissue engineering: stem cell transplantation, and cell homing. One of the goals of functional pulp regeneration is to achieve innervation. Nerves play a vital role in dentin formation, nutrition, sensation, and defense in the pulp. Successful neural regeneration faces tough challenges in both animal studies and clinical trials. Investigation of the regeneration and repair of the nerves in the pulp has become a serious undertaking. In this review, we summarize the current understanding of the key stem cells, signaling molecules, and biomaterials that could promote neural regeneration as part of pulp regeneration. We also discuss the challenges in preclinical or clinical neural regeneration applications to guide deep research in the future.
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31
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Lv X, Gao F, Cao X. Skeletal interoception in bone homeostasis and pain. Cell Metab 2022; 34:1914-1931. [PMID: 36257317 PMCID: PMC9742337 DOI: 10.1016/j.cmet.2022.09.025] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [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: 09/07/2022] [Accepted: 09/26/2022] [Indexed: 01/24/2023]
Abstract
Accumulating evidence indicates that interoception maintains proper physiological status and orchestrates metabolic homeostasis by regulating feeding behaviors, glucose balance, and lipid metabolism. Continuous skeletal remodeling consumes a tremendous amount of energy to provide skeletal scaffolding, support muscle movement, store vital minerals, and maintain a niche for hematopoiesis, which are processes that also contribute to overall metabolic balance. Although skeletal innervation has been described for centuries, recent work has shown that skeletal metabolism is tightly regulated by the nervous system and that skeletal interoception regulates bone homeostasis. Here, we provide a general discussion of interoception and its effects on the skeleton and whole-body metabolism. We also discuss skeletal interoception-mediated regulation in the context of pathological conditions and skeletal pain as well as future challenges to our understanding of these process and how they can be leveraged for more effective therapy.
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Affiliation(s)
- Xiao Lv
- Center for Musculoskeletal Research, Department of Orthopaedic Surgery and Department of Biomedical Engineering, The Johns Hopkins University, Baltimore, MD 21205, USA
| | - Feng Gao
- Center for Musculoskeletal Research, Department of Orthopaedic Surgery and Department of Biomedical Engineering, The Johns Hopkins University, Baltimore, MD 21205, USA
| | - Xu Cao
- Center for Musculoskeletal Research, Department of Orthopaedic Surgery and Department of Biomedical Engineering, The Johns Hopkins University, Baltimore, MD 21205, USA.
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32
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Qin Q, Lee S, Patel N, Walden K, Gomez-Salazar M, Levi B, James AW. Neurovascular coupling in bone regeneration. Exp Mol Med 2022; 54:1844-1849. [PMID: 36446849 PMCID: PMC9722927 DOI: 10.1038/s12276-022-00899-6] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2022] [Revised: 10/11/2022] [Accepted: 10/11/2022] [Indexed: 11/30/2022] Open
Abstract
The mammalian skeletal system is densely innervated by both neural and vascular networks. Peripheral nerves in the skeleton include sensory and sympathetic nerves. The crosstalk between skeletal and neural tissues is critical for skeletal development and regeneration. The cellular processes of osteogenesis and angiogenesis are coupled in both physiological and pathophysiological contexts. The cellular and molecular regulation of osteogenesis and angiogenesis have yet to be fully defined. This review will provide a detailed characterization of the regulatory role of nerves and blood vessels during bone regeneration. Furthermore, given the importance of the spatial relationship between nerves and blood vessels in bone, we discuss neurovascular coupling during physiological and pathological bone formation. A better understanding of the interactions between nerves and blood vessels will inform future novel therapeutic neural and vascular targeting for clinical bone repair and regeneration.
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Affiliation(s)
- Qizhi Qin
- grid.21107.350000 0001 2171 9311Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, MD 21205 USA
| | - Seungyong Lee
- grid.260024.20000 0004 0627 4571Department of Physiology, College of Graduate Studies, Midwestern University, Glendale, AZ 85308 USA ,grid.412977.e0000 0004 0532 7395Department of Physical Education, Incheon National University, Incheon, 22012 South Korea
| | - Nirali Patel
- grid.260024.20000 0004 0627 4571Arizona College of Osteopathic Medicine, Midwestern University, Glendale, AZ 85308 USA
| | - Kalah Walden
- grid.260024.20000 0004 0627 4571Arizona College of Osteopathic Medicine, Midwestern University, Glendale, AZ 85308 USA
| | - Mario Gomez-Salazar
- grid.21107.350000 0001 2171 9311Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, MD 21205 USA
| | - Benjamin Levi
- grid.267313.20000 0000 9482 7121Departments of Surgery, UT Southwestern Medical Center, Dallas, TX 75390 USA
| | - Aaron W. James
- grid.21107.350000 0001 2171 9311Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, MD 21205 USA
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33
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Liu Z, Suh JS, Deng P, Bezouglaia O, Do M, Mirnia M, Cui ZK, Lee M, Aghaloo T, Wang CY, Hong C. Epigenetic Regulation of NGF-Mediated Osteogenic Differentiation in Human Dental Mesenchymal Stem Cells. Stem Cells 2022; 40:818-830. [PMID: 35728620 PMCID: PMC9512103 DOI: 10.1093/stmcls/sxac042] [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: 01/20/2022] [Accepted: 06/02/2022] [Indexed: 11/13/2022]
Abstract
Nerve growth factor (NGF) is the best-characterized neurotrophin and is primarily recognized for its key role in the embryonic development of the nervous system and neuronal cell survival/differentiation. Recently, unexpected actions of NGF in bone regeneration have emerged as NGF is able to enhance the osteogenic differentiation of mesenchymal stem cells. However, little is known regarding how NGF signaling regulates osteogenic differentiation through epigenetic mechanisms. In this study, using human dental mesenchymal stem cells (DMSCs), we demonstrated that NGF mediates osteogenic differentiation through p75NTR, a low-affinity NGF receptor. P75NTR-mediated NGF signaling activates the JNK cascade and the expression of KDM4B, an activating histone demethylase, by removing repressive H3K9me3 epigenetic marks. Mechanistically, NGF-activated c-Jun binds to the KDM4B promoter region and directly upregulates KDM4B expression. Subsequently, KDM4B directly and epigenetically activates DLX5, a master osteogenic gene, by demethylating H3K9me3 marks. Furthermore, we revealed that KDM4B and c-Jun from the JNK signaling pathway work in concert to regulate NGF-mediated osteogenic differentiation through simultaneous recruitment to the promoter region of DLX5. We identified KDM4B as a key epigenetic regulator during the NGF-mediated osteogenesis both in vitro and in vivo using the calvarial defect regeneration mouse model. In conclusion, our study thoroughly elucidated the molecular and epigenetic mechanisms during NGF-mediated osteogenesis.
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Affiliation(s)
- Zhenqing Liu
- Division of Oral Biology and Medicine, School of Dentistry, University of California, Los Angeles (UCLA), Los Angeles, CA, USA
| | - Jin Sook Suh
- Department of Orofacial Sciences, School of Dentistry, University of California, San Francisco (UCSF), San Francisco, CA, USA
| | - Peng Deng
- Division of Oral Biology and Medicine, School of Dentistry, University of California, Los Angeles (UCLA), Los Angeles, CA, USA
| | - Olga Bezouglaia
- Division of Diagnostic and Surgical Sciences, School of Dentistry, University of California, Los Angeles (UCLA), Los Angeles, CA, USA
| | - Megan Do
- School of Dentistry, University of California, San Francisco (UCSF), San Francisco, CA, USA
| | - Mojan Mirnia
- School of Dentistry, University of California, Los Angeles (UCLA), Los Angeles, CA, USA
| | - Zhong-Kai Cui
- Division of Advanced Prosthodontics, School of Dentistry, University of California, Los Angeles (UCLA), Los Angeles, CA, USA
| | - Min Lee
- Division of Advanced Prosthodontics, School of Dentistry, University of California, Los Angeles (UCLA), Los Angeles, CA, USA
- Department of Bioengineering, University of California, Los Angeles (UCLA), Los Angeles, CA, USA
| | - Tara Aghaloo
- Division of Diagnostic and Surgical Sciences, School of Dentistry, University of California, Los Angeles (UCLA), Los Angeles, CA, USA
| | - Cun-Yu Wang
- Division of Oral Biology and Medicine, School of Dentistry, University of California, Los Angeles (UCLA), Los Angeles, CA, USA
- Department of Bioengineering, University of California, Los Angeles (UCLA), Los Angeles, CA, USA
| | - Christine Hong
- Department of Orofacial Sciences, School of Dentistry, University of California, San Francisco (UCSF), San Francisco, CA, USA
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34
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Sun R, Bai L, Yang Y, Ding Y, Zhuang J, Cui J. Nervous System-Driven Osseointegration. Int J Mol Sci 2022; 23:ijms23168893. [PMID: 36012155 PMCID: PMC9408825 DOI: 10.3390/ijms23168893] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Revised: 08/03/2022] [Accepted: 08/08/2022] [Indexed: 11/16/2022] Open
Abstract
Implants are essential therapeutic tools for treating bone fractures and joint replacements. Despite the in-depth study of osseointegration for more than fifty years, poor osseointegration caused by aseptic loosening remains one of the leading causes of late implant failures. Osseointegration is a highly sophisticated and spatiotemporal process in vivo involving the immune response, angiogenesis, and osteogenesis. It has been unraveled that the nervous system plays a pivotal role in skeletal health via manipulating neurotrophins, neuropeptides, and nerve cells. Herein, the research related to nervous system-driven osseointegration was systematically analyzed and reviewed, aiming to demonstrate the prominent role of neuromodulation in osseointegration. Additionally, it is indicated that the implant design considering the role of neuromodulation might be a promising way to prevent aseptic loosening.
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Affiliation(s)
- Ruoyue Sun
- Key Laboratory for Ultrafine Materials of Ministry of Education, College of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Long Bai
- Institute of Translational Medicine, Shanghai University, Shanghai 200444, China
- Frontiers Science Center for Materiobiology and Dynamic Chemistry, East China University of Science and Technology, Shanghai 200237, China
- Correspondence: (J.C.); (L.B.)
| | - Yaru Yang
- College of Materials and Textile Engineering, Jiaxing University, Jiaxing 314001, China
| | - Yanshu Ding
- Key Laboratory for Ultrafine Materials of Ministry of Education, College of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Jingwen Zhuang
- Key Laboratory for Ultrafine Materials of Ministry of Education, College of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Jingyuan Cui
- Key Laboratory for Ultrafine Materials of Ministry of Education, College of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
- Frontiers Science Center for Materiobiology and Dynamic Chemistry, East China University of Science and Technology, Shanghai 200237, China
- Correspondence: (J.C.); (L.B.)
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35
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Buettmann EG, Goldscheitter GM, Hoppock GA, Friedman MA, Suva LJ, Donahue HJ. Similarities Between Disuse and Age-Induced Bone Loss. J Bone Miner Res 2022; 37:1417-1434. [PMID: 35773785 PMCID: PMC9378610 DOI: 10.1002/jbmr.4643] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Revised: 06/17/2022] [Accepted: 06/24/2022] [Indexed: 11/07/2022]
Abstract
Disuse and aging are known risk factors associated with low bone mass and quality deterioration, resulting in increased fracture risk. Indeed, current and emerging evidence implicate a large number of shared skeletal manifestations between disuse and aging scenarios. This review provides a detailed overview of current preclinical models of musculoskeletal disuse and the clinical scenarios they seek to recapitulate. We also explore and summarize the major similarities between bone loss after extreme disuse and advanced aging at multiple length scales, including at the organ/tissue, cellular, and molecular level. Specifically, shared structural and material alterations of bone loss are presented between disuse and aging, including preferential loss of bone at cancellous sites, cortical thinning, and loss of bone strength due to enhanced fragility. At the cellular level bone loss is accompanied, during disuse and aging, by increased bone resorption, decreased formation, and enhanced adipogenesis due to altered gap junction intercellular communication, WNT/β-catenin and RANKL/OPG signaling. Major differences between extreme short-term disuse and aging are discussed, including anatomical specificity, differences in bone turnover rates, periosteal modeling, and the influence of subject sex and genetic variability. The examination also identifies potential shared mechanisms underlying bone loss in aging and disuse that warrant further study such as collagen cross-linking, advanced glycation end products/receptor for advanced glycation end products (AGE-RAGE) signaling, reactive oxygen species (ROS) and nuclear factor κB (NF-κB) signaling, cellular senescence, and altered lacunar-canalicular connectivity (mechanosensation). Understanding the shared structural alterations, changes in bone cell function, and molecular mechanisms common to both extreme disuse and aging are paramount to discovering therapies to combat both age-related and disuse-induced osteoporosis. © 2022 American Society for Bone and Mineral Research (ASBMR).
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Affiliation(s)
- Evan G Buettmann
- Department of Biomedical Engineering, Virginia Commonwealth University, Richmond, VA, USA
| | - Galen M Goldscheitter
- Department of Biomedical Engineering, Virginia Commonwealth University, Richmond, VA, USA
| | - Gabriel A Hoppock
- Department of Biomedical Engineering, Virginia Commonwealth University, Richmond, VA, USA
| | - Michael A Friedman
- Department of Biomedical Engineering, Virginia Commonwealth University, Richmond, VA, USA
| | - Larry J Suva
- Department of Veterinary Physiology and Pharmacology, College of Veterinary Medicine and Biomedical Sciences, Texas A&M University, College Station, TX, USA
| | - Henry J Donahue
- Department of Biomedical Engineering, Virginia Commonwealth University, Richmond, VA, USA
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36
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Sun Q, Li G, Liu D, Xie W, Xiao W, Li Y, Cai M. Peripheral nerves in the tibial subchondral bone : the role of pain and homeostasis in osteoarthritis. Bone Joint Res 2022; 11:439-452. [PMID: 35775136 PMCID: PMC9350689 DOI: 10.1302/2046-3758.117.bjr-2021-0355.r1] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Osteoarthritis (OA) is a highly prevalent degenerative joint disorder characterized by joint pain and physical disability. Aberrant subchondral bone induces pathological changes and is a major source of pain in OA. In the subchondral bone, which is highly innervated, nerves have dual roles in pain sensation and bone homeostasis regulation. The interaction between peripheral nerves and target cells in the subchondral bone, and the interplay between the sensory and sympathetic nervous systems, allow peripheral nerves to regulate subchondral bone homeostasis. Alterations in peripheral innervation and local transmitters are closely related to changes in nociception and subchondral bone homeostasis, and affect the progression of OA. Recent literature has substantially expanded our understanding of the physiological and pathological distribution and function of specific subtypes of neurones in bone. This review summarizes the types and distribution of nerves detected in the tibial subchondral bone, their cellular and molecular interactions with bone cells that regulate subchondral bone homeostasis, and their role in OA pain. A comprehensive understanding and further investigation of the functions of peripheral innervation in the subchondral bone will help to develop novel therapeutic approaches to effectively prevent OA, and alleviate OA pain. Cite this article: Bone Joint Res 2022;11(7):439–452.
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Affiliation(s)
- Qi Sun
- Department of Orthopedics, Shanghai Tenth People's Hospital, Tongji University, School of Medicine, Shanghai, China
| | - Gen Li
- Department of Orthopedics, Shanghai Institute of Traumatology and Orthopedics, Ruijin Hospital, Shanghai Jiaotong University, School of Medicine, Shanghai, China
| | - Di Liu
- Department of Orthopedics, Xiangya Hospital, Central South University, Changsha, China
| | - Wenqing Xie
- Department of Orthopedics, Xiangya Hospital, Central South University, Changsha, China
| | - Wenfeng Xiao
- Department of Orthopedics, Xiangya Hospital, Central South University, Changsha, China.,National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
| | - Yusheng Li
- Department of Orthopedics, Xiangya Hospital, Central South University, Changsha, China.,National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
| | - Ming Cai
- Department of Orthopedics, Shanghai Tenth People's Hospital, Tongji University, School of Medicine, Shanghai, China
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37
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Moraes BC, Ribeiro-Filho HV, Roldão AP, Toniolo EF, Carretero GPB, Sgro GG, Batista FAH, Berardi DE, Oliveira VRS, Tomasin R, Vieceli FM, Pramio DT, Cardoso AB, Figueira ACM, Farah SC, Devi LA, Dale CS, de Oliveira PSL, Schechtman D. Structural analysis of TrkA mutations in patients with congenital insensitivity to pain reveals PLCγ as an analgesic drug target. Sci Signal 2022; 15:eabm6046. [PMID: 35471943 DOI: 10.1126/scisignal.abm6046] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
Chronic pain is a major health issue, and the search for new analgesics has become increasingly important because of the addictive properties and unwanted side effects of opioids. To explore potentially new drug targets, we investigated mutations in the NTRK1 gene found in individuals with congenital insensitivity to pain with anhidrosis (CIPA). NTRK1 encodes tropomyosin receptor kinase A (TrkA), the receptor for nerve growth factor (NGF) and that contributes to nociception. Molecular modeling and biochemical analysis identified mutations that decreased the interaction between TrkA and one of its substrates and signaling effectors, phospholipase Cγ (PLCγ). We developed a cell-permeable phosphopeptide derived from TrkA (TAT-pQYP) that bound the Src homology domain 2 (SH2) of PLCγ. In HEK-293T cells, TAT-pQYP inhibited the binding of heterologously expressed TrkA to PLCγ and decreased NGF-induced, TrkA-mediated PLCγ activation and signaling. In mice, intraplantar administration of TAT-pQYP decreased mechanical sensitivity in an inflammatory pain model, suggesting that targeting this interaction may be analgesic. The findings demonstrate a strategy to identify new targets for pain relief by analyzing the signaling pathways that are perturbed in CIPA.
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Affiliation(s)
- Beatriz C Moraes
- Department of Biochemistry, Chemistry Institute, University of São Paulo, SP 05508-000, Brazil
| | - Helder V Ribeiro-Filho
- Brazilian Center for Research in Energy and Materials (CNPEM), Brazilian Biosciences National Laboratory (LNBio) Campinas, SP 13083-100, Brazil
| | - Allan P Roldão
- Department of Biochemistry, Chemistry Institute, University of São Paulo, SP 05508-000, Brazil
| | - Elaine F Toniolo
- Laboratory of Neuromodulation of Experimental Pain (LaNed), Department of Anatomy, Institute of Biomedical Sciences, University of Sao Paulo, SP 05508-000, Brazil
| | - Gustavo P B Carretero
- Department of Biochemistry, Chemistry Institute, University of São Paulo, SP 05508-000, Brazil
| | - Germán G Sgro
- Department of Biochemistry, Chemistry Institute, University of São Paulo, SP 05508-000, Brazil.,Department of Biomolecular Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP 14040903, Brazil
| | - Fernanda A H Batista
- Brazilian Center for Research in Energy and Materials (CNPEM), Brazilian Biosciences National Laboratory (LNBio) Campinas, SP 13083-100, Brazil
| | - Damian E Berardi
- Department of Biochemistry, Chemistry Institute, University of São Paulo, SP 05508-000, Brazil
| | - Victoria R S Oliveira
- Laboratory of Neuromodulation of Experimental Pain (LaNed), Department of Anatomy, Institute of Biomedical Sciences, University of Sao Paulo, SP 05508-000, Brazil
| | - Rebeka Tomasin
- Department of Biochemistry, Chemistry Institute, University of São Paulo, SP 05508-000, Brazil
| | - Felipe M Vieceli
- Department of Biochemistry, Chemistry Institute, University of São Paulo, SP 05508-000, Brazil
| | - Dimitrius T Pramio
- Department of Biochemistry, Chemistry Institute, University of São Paulo, SP 05508-000, Brazil
| | - Alexandre B Cardoso
- Department of Biochemistry, Chemistry Institute, University of São Paulo, SP 05508-000, Brazil
| | - Ana C M Figueira
- Brazilian Center for Research in Energy and Materials (CNPEM), Brazilian Biosciences National Laboratory (LNBio) Campinas, SP 13083-100, Brazil
| | - Shaker C Farah
- Department of Biochemistry, Chemistry Institute, University of São Paulo, SP 05508-000, Brazil
| | - Lakshmi A Devi
- Department of Pharmacological Sciences, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Camila S Dale
- Laboratory of Neuromodulation of Experimental Pain (LaNed), Department of Anatomy, Institute of Biomedical Sciences, University of Sao Paulo, SP 05508-000, Brazil
| | - Paulo S L de Oliveira
- Brazilian Center for Research in Energy and Materials (CNPEM), Brazilian Biosciences National Laboratory (LNBio) Campinas, SP 13083-100, Brazil
| | - Deborah Schechtman
- Department of Biochemistry, Chemistry Institute, University of São Paulo, SP 05508-000, Brazil
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38
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Xu J, Li Z, Tower RJ, Negri S, Wang Y, Meyers CA, Sono T, Qin Q, Lu A, Xing X, McCarthy EF, Clemens TL, James AW. NGF-p75 signaling coordinates skeletal cell migration during bone repair. SCIENCE ADVANCES 2022; 8:eabl5716. [PMID: 35302859 PMCID: PMC8932666 DOI: 10.1126/sciadv.abl5716] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Accepted: 01/26/2022] [Indexed: 05/26/2023]
Abstract
Bone regeneration following injury is initiated by inflammatory signals and occurs in association with infiltration by sensory nerve fibers. Together, these events are believed to coordinate angiogenesis and tissue reprogramming, but the mechanism of coupling immune signals to reinnervation and osteogenesis is unknown. Here, we found that nerve growth factor (NGF) is expressed following cranial bone injury and signals via p75 in resident mesenchymal osteogenic precursors to affect their migration into the damaged tissue. Mice lacking Ngf in myeloid cells demonstrated reduced migration of osteogenic precursors to the injury site with consequently delayed bone healing. These features were phenocopied by mice lacking p75 in Pdgfra+ osteoblast precursors. Single-cell transcriptomics identified mesenchymal subpopulations with potential roles in cell migration and immune response, altered in the context of p75 deletion. Together, these results identify the role of p75 signaling pathway in coordinating skeletal cell migration during early bone repair.
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Affiliation(s)
- Jiajia Xu
- Department of Pathology, Johns Hopkins University, Baltimore, MD 21205, USA
| | - Zhao Li
- Department of Pathology, Johns Hopkins University, Baltimore, MD 21205, USA
| | - Robert J. Tower
- Department of Orthopaedics, Johns Hopkins University, Baltimore, MD 21205, USA
| | - Stefano Negri
- Department of Pathology, Johns Hopkins University, Baltimore, MD 21205, USA
- Department of Orthopaedics and Traumatology, University of Verona, Verona 37129, Italy
| | - Yiyun Wang
- Department of Pathology, Johns Hopkins University, Baltimore, MD 21205, USA
| | - Carolyn A. Meyers
- Department of Pathology, Johns Hopkins University, Baltimore, MD 21205, USA
| | - Takashi Sono
- Department of Pathology, Johns Hopkins University, Baltimore, MD 21205, USA
| | - Qizhi Qin
- Department of Pathology, Johns Hopkins University, Baltimore, MD 21205, USA
| | - Amy Lu
- Department of Pathology, Johns Hopkins University, Baltimore, MD 21205, USA
| | - Xin Xing
- Department of Pathology, Johns Hopkins University, Baltimore, MD 21205, USA
| | - Edward F. McCarthy
- Department of Pathology, Johns Hopkins University, Baltimore, MD 21205, USA
| | - Thomas L. Clemens
- Department of Orthopaedics, Johns Hopkins University, Baltimore, MD 21205, USA
- Baltimore Veterans Administration Medical Center, Baltimore, MD 21201, USA
| | - Aaron W. James
- Department of Pathology, Johns Hopkins University, Baltimore, MD 21205, USA
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39
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Lee S, Shin YA, Cho J, Park DH, Kim C. Trabecular Bone Microarchitecture Improvement Is Associated With Skeletal Nerve Increase Following Aerobic Exercise Training in Middle-Aged Mice. Front Physiol 2022; 12:800301. [PMID: 35273515 PMCID: PMC8902445 DOI: 10.3389/fphys.2021.800301] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Accepted: 12/21/2021] [Indexed: 01/27/2023] Open
Abstract
Advancing age is associated with bone loss and an increased risk of osteoporosis. Exercise training improves bone metabolism and peripheral nerve regeneration, and may play a critical role in osteogenesis and increase in skeletal nerve fiber density. In this study, the potential positive role of aerobic exercise training in bone metabolism and skeletal nerve regeneration was comprehensively evaluated in 14-month-old male C57BL/6 mice. The mice were divided into two groups: no exercise (non-exercise group) and 8-weeks of aerobic exercise training (exercise group), with six mice in each group. Dual-energy X-ray absorptiometry and micro-computed tomography showed that femoral and tibial bone parameters improved after aerobic exercise training. Greater skeletal nerve fiber density was also observed in the distal femoral and proximal tibial periostea, measured and analyzed by immunofluorescence staining and confocal microscopy. Pearson correlation analysis revealed a significant association between skeletal nerve densities and trabecular bone volume/total volume ratios (distal femur; R 2 = 0.82, p < 0.05, proximal tibia; R 2 = 0.59, p = 0.07) in the exercise group; while in the non-exercise group no significant correlation was found (distal femur; R 2 = 0.10, p = 0.54, proximal tibia; R 2 = 0.12, p = 0.51). Analysis of archival microarray database confirmed that aerobic exercise training changed the microRNA profiles in the mice femora. The differentially expressed microRNAs reinforce the role of aerobic exercise training in the osteogenic and neurogenic potential of femora and tibiae. In conclusion, 8-weeks of aerobic exercise training positively regulate bone metabolism, an effect that paralleled a significant increase in skeletal nerve fiber density. These findings suggest that aerobic exercise training may have dual utility, both as a direct stimulator of bone remodeling and a positive regulator of skeletal nerve regeneration.
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Affiliation(s)
- Seungyong Lee
- Department of Physiology, College of Graduate Studies, Midwestern University, Glendale, AZ, United States
| | - Yun-A Shin
- Department of Exercise Prescription and Rehabilitation, College of Sports Science, Dankook University, Cheonan, South Korea
| | - Jinkyung Cho
- Department of Sport Science, Korea Institute of Sport Science, Seoul, South Korea
| | - Dong-Ho Park
- Department of Kinesiology, Inha University, Incheon, South Korea.,Department of Biomedical Science, Program in Biomedical Science and Engineering, Inha University, Incheon, South Korea
| | - Changsun Kim
- Department of Physical Education, Dongduk Women's University, Seoul, South Korea
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40
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Rajpar I, Tomlinson RE. Function of peripheral nerves in the development and healing of tendon and bone. Semin Cell Dev Biol 2022; 123:48-56. [PMID: 33994302 PMCID: PMC8589913 DOI: 10.1016/j.semcdb.2021.05.001] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 04/30/2021] [Accepted: 05/02/2021] [Indexed: 01/03/2023]
Abstract
Although the functions of the peripheral nervous system in whole body homeostasis and sensation have been understood for many years, recent investigation has uncovered new roles for innervation in the musculoskeletal system. This review centers on advances regarding the function of nerves in the development and repair of two connected tissues: tendon and bone. Innervation in healthy tendons is generally confined to the tendon sheaths, and tendon-bone attachment units are typically aneural. In contrast to tendon, bone is an innervated and vascularized structure. Historically, the function of abundant peripheral nerves in bone has been limited to pain and some non-painful sensory perception in disease and injury. Indeed, much of our understanding of peripheral nerves in tendons, bones, and entheses is limited to the source and type of innervation in healthy and injured tissues. However, more recent studies have made important observations regarding the appearance, type, and innervation patterns of nerves during embryonic and postnatal development and in response to injury, which suggest a more expansive role for peripheral nerves in the formation of musculoskeletal tissues. Indeed, tendons and bones develop in a close spatiotemporal relationship in the embryonic mesoderm. Models of limb denervation have shed light on the importance of sensory innervation in bone and to a lesser extent, tendon development, and more recent work has unraveled key nerve signaling pathways. Furthermore, loss of sensory innervation also impairs healing of bone fractures and may contribute to chronic tendinopathy. However, more study is required to translate our knowledge of peripheral nerves to therapeutic strategies to combat bone and tendon diseases.
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Affiliation(s)
- Ibtesam Rajpar
- Department of Orthopedic Surgery, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, USA
| | - Ryan E Tomlinson
- Department of Orthopedic Surgery, Sidney Kimmel Medical College, Thomas Jefferson University, Philadelphia, PA, USA.
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Bai S, Lu X, Pan Q, Wang B, Pong U K, Yang Y, Wang H, Lin S, Feng L, Wang Y, Li Y, Lin W, Wang Y, Zhang X, Li Y, Li L, Yang Z, Wang M, Lee WYW, Jiang X, Li G. Cranial Bone Transport Promotes Angiogenesis, Neurogenesis, and Modulates Meningeal Lymphatic Function in Middle Cerebral Artery Occlusion Rats. Stroke 2022; 53:1373-1385. [PMID: 35135326 DOI: 10.1161/strokeaha.121.037912] [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] [Indexed: 11/16/2022]
Abstract
BACKGROUND Ischemic stroke is a leading cause of death and disability worldwide. However, the time window for quickly dissolving clots and restoring cerebral blood flow, using tissue plasminogen activator treatment is rather limited, resulting in many patients experiencing long-term functional impairments if not death. This study aims to determine the roles of cranial bone transport (CBT), a novel, effective, and simple surgical technique, in the recovery of ischemic stroke using middle cerebral artery occlusion (MCAO) rat model. METHODS CBT was performed by slowly sliding a bone segment in skull with a special frame and a speed of 0.25 mm/12 hours for 10 days following MCAO. Morris water maze, rotarod test, and catwalk gait analysis were used to study the neurological behaviors, and infarct area and cerebral flow were evaluated during CBT process. Immunofluorescence staining of CD31 and Nestin/Sox2 (sex determining region Y box 2) was performed to study the angiogenesis and neurogenesis. OVA-A647 (ovalbumin-Alexa Fluor 647) was intracisterna magna injected to evaluate the meningeal lymphatic drainage function. RESULTS CBT treatment has significantly reduced the ischemic lesions areas and improved the neurological deficits in MCAO rats compared with the rats in the control groups. CBT treatment significantly promoted angiogenesis and neurogenesis in the brain of MCAO rats. The drainage function of meningeal lymphatic vessels in MCAO rats was significantly impaired compared with normal rats. Ablation of meningeal lymphatic drainage led to increased neuroinflammation and aggravated neurological deficits and ischemic injury in MCAO rats. CBT treatment significantly improved the meningeal lymphatic drainage function and alleviated T-cell infiltration in MCAO rats. CONCLUSIONS This study provided evidence for the possible mechanisms on how CBT attenuates ischemic stroke injury and facilitates rapid neuronal function recovery, suggesting that CBT may be an alternative treatment strategy for managing ischemic stroke.
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Affiliation(s)
- Shanshan Bai
- Department of Orthopaedics & Traumatology, Stem Cells and Regenerative Medicine Laboratory, Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, Hong Kong, SAR, PR China (S.B., X.L., B.W., Y.Y., H.W., S.L., L.F., Yan Wang, Yucong Li, W.L., Yujia Wang, X.Z., Yuan Li, L.L., Z.Y., M.W., W.Y.-W.L., G.L.)
| | - Xuan Lu
- Department of Orthopaedics & Traumatology, Stem Cells and Regenerative Medicine Laboratory, Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, Hong Kong, SAR, PR China (S.B., X.L., B.W., Y.Y., H.W., S.L., L.F., Yan Wang, Yucong Li, W.L., Yujia Wang, X.Z., Yuan Li, L.L., Z.Y., M.W., W.Y.-W.L., G.L.)
| | - Qi Pan
- Department of Pediatric Orthopaedics, South China Hospital, Health Science Center, Shenzhen University, Shenzhen, PR China (Q.P.)
| | - Bin Wang
- Department of Orthopaedics & Traumatology, Stem Cells and Regenerative Medicine Laboratory, Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, Hong Kong, SAR, PR China (S.B., X.L., B.W., Y.Y., H.W., S.L., L.F., Yan Wang, Yucong Li, W.L., Yujia Wang, X.Z., Yuan Li, L.L., Z.Y., M.W., W.Y.-W.L., G.L.)
| | - Kin Pong U
- Key Laboratory for Regenerative Medicine of the Ministry of Education of China, School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong, SAR, PR China (K.P.U., X.J.)
| | - Yongkang Yang
- Department of Orthopaedics & Traumatology, Stem Cells and Regenerative Medicine Laboratory, Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, Hong Kong, SAR, PR China (S.B., X.L., B.W., Y.Y., H.W., S.L., L.F., Yan Wang, Yucong Li, W.L., Yujia Wang, X.Z., Yuan Li, L.L., Z.Y., M.W., W.Y.-W.L., G.L.)
| | - Haixing Wang
- Department of Orthopaedics & Traumatology, Stem Cells and Regenerative Medicine Laboratory, Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, Hong Kong, SAR, PR China (S.B., X.L., B.W., Y.Y., H.W., S.L., L.F., Yan Wang, Yucong Li, W.L., Yujia Wang, X.Z., Yuan Li, L.L., Z.Y., M.W., W.Y.-W.L., G.L.)
| | - Sien Lin
- Department of Orthopaedics & Traumatology, Stem Cells and Regenerative Medicine Laboratory, Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, Hong Kong, SAR, PR China (S.B., X.L., B.W., Y.Y., H.W., S.L., L.F., Yan Wang, Yucong Li, W.L., Yujia Wang, X.Z., Yuan Li, L.L., Z.Y., M.W., W.Y.-W.L., G.L.)
| | - Lu Feng
- Department of Orthopaedics & Traumatology, Stem Cells and Regenerative Medicine Laboratory, Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, Hong Kong, SAR, PR China (S.B., X.L., B.W., Y.Y., H.W., S.L., L.F., Yan Wang, Yucong Li, W.L., Yujia Wang, X.Z., Yuan Li, L.L., Z.Y., M.W., W.Y.-W.L., G.L.)
| | - Yan Wang
- Department of Orthopaedics & Traumatology, Stem Cells and Regenerative Medicine Laboratory, Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, Hong Kong, SAR, PR China (S.B., X.L., B.W., Y.Y., H.W., S.L., L.F., Yan Wang, Yucong Li, W.L., Yujia Wang, X.Z., Yuan Li, L.L., Z.Y., M.W., W.Y.-W.L., G.L.)
| | - Yucong Li
- Department of Orthopaedics & Traumatology, Stem Cells and Regenerative Medicine Laboratory, Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, Hong Kong, SAR, PR China (S.B., X.L., B.W., Y.Y., H.W., S.L., L.F., Yan Wang, Yucong Li, W.L., Yujia Wang, X.Z., Yuan Li, L.L., Z.Y., M.W., W.Y.-W.L., G.L.)
| | - Weiping Lin
- Department of Orthopaedics & Traumatology, Stem Cells and Regenerative Medicine Laboratory, Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, Hong Kong, SAR, PR China (S.B., X.L., B.W., Y.Y., H.W., S.L., L.F., Yan Wang, Yucong Li, W.L., Yujia Wang, X.Z., Yuan Li, L.L., Z.Y., M.W., W.Y.-W.L., G.L.)
| | - Yujia Wang
- Department of Orthopaedics & Traumatology, Stem Cells and Regenerative Medicine Laboratory, Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, Hong Kong, SAR, PR China (S.B., X.L., B.W., Y.Y., H.W., S.L., L.F., Yan Wang, Yucong Li, W.L., Yujia Wang, X.Z., Yuan Li, L.L., Z.Y., M.W., W.Y.-W.L., G.L.)
| | - Xiaoting Zhang
- Department of Orthopaedics & Traumatology, Stem Cells and Regenerative Medicine Laboratory, Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, Hong Kong, SAR, PR China (S.B., X.L., B.W., Y.Y., H.W., S.L., L.F., Yan Wang, Yucong Li, W.L., Yujia Wang, X.Z., Yuan Li, L.L., Z.Y., M.W., W.Y.-W.L., G.L.)
| | - Yuan Li
- Department of Orthopaedics & Traumatology, Stem Cells and Regenerative Medicine Laboratory, Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, Hong Kong, SAR, PR China (S.B., X.L., B.W., Y.Y., H.W., S.L., L.F., Yan Wang, Yucong Li, W.L., Yujia Wang, X.Z., Yuan Li, L.L., Z.Y., M.W., W.Y.-W.L., G.L.)
| | - Linlong Li
- Department of Orthopaedics & Traumatology, Stem Cells and Regenerative Medicine Laboratory, Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, Hong Kong, SAR, PR China (S.B., X.L., B.W., Y.Y., H.W., S.L., L.F., Yan Wang, Yucong Li, W.L., Yujia Wang, X.Z., Yuan Li, L.L., Z.Y., M.W., W.Y.-W.L., G.L.)
| | - Zhengmeng Yang
- Department of Orthopaedics & Traumatology, Stem Cells and Regenerative Medicine Laboratory, Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, Hong Kong, SAR, PR China (S.B., X.L., B.W., Y.Y., H.W., S.L., L.F., Yan Wang, Yucong Li, W.L., Yujia Wang, X.Z., Yuan Li, L.L., Z.Y., M.W., W.Y.-W.L., G.L.)
| | - Ming Wang
- Department of Orthopaedics & Traumatology, Stem Cells and Regenerative Medicine Laboratory, Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, Hong Kong, SAR, PR China (S.B., X.L., B.W., Y.Y., H.W., S.L., L.F., Yan Wang, Yucong Li, W.L., Yujia Wang, X.Z., Yuan Li, L.L., Z.Y., M.W., W.Y.-W.L., G.L.)
| | - Wayne Yuk-Wai Lee
- Department of Orthopaedics & Traumatology, Stem Cells and Regenerative Medicine Laboratory, Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, Hong Kong, SAR, PR China (S.B., X.L., B.W., Y.Y., H.W., S.L., L.F., Yan Wang, Yucong Li, W.L., Yujia Wang, X.Z., Yuan Li, L.L., Z.Y., M.W., W.Y.-W.L., G.L.)
| | - Xiaohua Jiang
- Key Laboratory for Regenerative Medicine of the Ministry of Education of China, School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong, SAR, PR China (K.P.U., X.J.)
| | - Gang Li
- Department of Orthopaedics & Traumatology, Stem Cells and Regenerative Medicine Laboratory, Li Ka Shing Institute of Health Sciences, The Chinese University of Hong Kong, Prince of Wales Hospital, Shatin, Hong Kong, SAR, PR China (S.B., X.L., B.W., Y.Y., H.W., S.L., L.F., Yan Wang, Yucong Li, W.L., Yujia Wang, X.Z., Yuan Li, L.L., Z.Y., M.W., W.Y.-W.L., G.L.)
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Qiao W, Pan D, Zheng Y, Wu S, Liu X, Chen Z, Wan M, Feng S, Cheung KMC, Yeung KWK, Cao X. Divalent metal cations stimulate skeleton interoception for new bone formation in mouse injury models. Nat Commun 2022; 13:535. [PMID: 35087048 PMCID: PMC8795158 DOI: 10.1038/s41467-022-28203-0] [Citation(s) in RCA: 32] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Accepted: 01/14/2022] [Indexed: 12/14/2022] Open
Abstract
Bone formation induced by divalent metal cations has been widely reported; however, the underlying mechanism is unclear. Here we report that these cations stimulate skeleton interoception by promoting prostaglandin E2 secretion from macrophages. This immune response is accompanied by the sprouting and arborization of calcitonin gene-related polypeptide-α+ nerve fibers, which sense the inflammatory cue with PGE2 receptor 4 and convey the interoceptive signals to the central nervous system. Activating skeleton interoception downregulates sympathetic tone for new bone formation. Moreover, either macrophage depletion or knockout of cyclooxygenase-2 in the macrophage abolishes divalent cation-induced skeleton interoception. Furthermore, sensory denervation or knockout of EP4 in the sensory nerves eliminates the osteogenic effects of divalent cations. Thus, our study reveals that divalent cations promote bone formation through the skeleton interoceptive circuit, a finding which could prompt the development of novel biomaterials to elicit the therapeutic power of these divalent cations. Mechanisms underlying bone formation induced by divalent metal cations remain largely unknown. Here the authors show that these cations can activate the skeleton interoceptive circuit through the immune-neural axis to initiate new bone formation.
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Affiliation(s)
- Wei Qiao
- Department of Orthopaedics and Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong S.A.R, People's Republic of China.,Department of Orthopaedic Surgery, The Johns Hopkins University School of Medicine, Baltimore, MD, 21205, USA.,Shenzhen Key Laboratory for Innovative Technology in Orthopaedic Trauma, The University of Hong Kong-Shenzhen Hospital, Shenzhen, 518053, People's Republic of China.,Applied Oral Sciences and Community Dental Care, Faculty of Dentistry, The University of Hong Kong, Hong Kong S.A.R, People's Republic of China
| | - Dayu Pan
- Department of Orthopaedic Surgery, The Johns Hopkins University School of Medicine, Baltimore, MD, 21205, USA.,Department of Orthopaedics, Tianjin Medical University General Hospital, 154 Anshan Road, Heping District, Tianjin, 300052, People's Republic of China
| | - Yufeng Zheng
- State Key Laboratory for Turbulence and Complex System and Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing, 100871, People's Republic of China
| | - Shuilin Wu
- School of Materials Science & Engineering, Tianjin University, Tianjin, 300072, People's Republic of China
| | - Xuanyong Liu
- State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai, 200050, People's Republic of China.,Cixi Center of Biomaterials Surface Engineering, Ningbo, 315300, People's Republic of China
| | - Zhuofan Chen
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou, 510000, People's Republic of China
| | - Mei Wan
- Department of Orthopaedic Surgery, The Johns Hopkins University School of Medicine, Baltimore, MD, 21205, USA
| | - Shiqin Feng
- Department of Orthopaedics, Tianjin Medical University General Hospital, 154 Anshan Road, Heping District, Tianjin, 300052, People's Republic of China
| | - Kenneth M C Cheung
- Department of Orthopaedics and Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong S.A.R, People's Republic of China.,Shenzhen Key Laboratory for Innovative Technology in Orthopaedic Trauma, The University of Hong Kong-Shenzhen Hospital, Shenzhen, 518053, People's Republic of China
| | - Kelvin W K Yeung
- Department of Orthopaedics and Traumatology, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong S.A.R, People's Republic of China. .,Shenzhen Key Laboratory for Innovative Technology in Orthopaedic Trauma, The University of Hong Kong-Shenzhen Hospital, Shenzhen, 518053, People's Republic of China.
| | - Xu Cao
- Department of Orthopaedic Surgery, The Johns Hopkins University School of Medicine, Baltimore, MD, 21205, USA.
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Abstract
Fracture healing is a complex, multistep process that is highly sensitive to mechanical signaling. To optimize repair, surgeons prescribe immediate weight-bearing as-tolerated within 24 hours after surgical fixation; however, this recommendation is based on anecdotal evidence and assessment of bulk healing outcomes (e.g., callus size, bone volume, etc.). Given challenges in accurately characterizing the mechanical environment and the ever-changing properties of the regenerate, the principles governing mechanical regulation of repair, including their cell and molecular basis, are not yet well defined. However, the use of mechanobiological rodent models, and their relatively large genetic toolbox, combined with recent advances in imaging approaches and single-cell analyses is improving our understanding of the bone microenvironment in response to loading. This review describes the identification and characterization of distinct cell populations involved in bone healing and highlights the most recent findings on mechanical regulation of bone homeostasis and repair with an emphasis on osteo-angio coupling. A discussion on aging and its impact on bone mechanoresponsiveness emphasizes the need for novel mechanotherapeutics that can re-sensitize skeletal stem and progenitor cells to physical rehabilitation protocols.
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Affiliation(s)
- Tareq Anani
- Department of Orthopedic Surgery, New York University Langone Health, New York, NY 10010, USA
| | - Alesha B Castillo
- Department of Orthopedic Surgery, New York University Langone Health, New York, NY 10010, USA; Department of Biomedical Engineering, Tandon School of Engineering, New York University, New York, NY 11201, USA; Department of Veterans Affairs, New York Harbor Healthcare System, Manhattan Campus, New York, NY 10010, USA.
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Voga M, Majdic G. Articular Cartilage Regeneration in Veterinary Medicine. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2022; 1401:23-55. [DOI: 10.1007/5584_2022_717] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Chen X, Hu Y, Geng Z, Su J. The "Three in One" Bone Repair Strategy for Osteoporotic Fractures. Front Endocrinol (Lausanne) 2022; 13:910602. [PMID: 35757437 PMCID: PMC9218483 DOI: 10.3389/fendo.2022.910602] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Accepted: 05/09/2022] [Indexed: 12/17/2022] Open
Abstract
In aging society, osteoporotic fractures have become one major social problem threatening the health of the elderly population in China. Compared with conventional fractures, low bone mass, bone defect and retarded healing issues of osteoporotic fractures lead to great difficulties in treatment and rehabilitation. Addressing major concerns in clinical settings, we proposed the "three in one" bone repair strategy focusing on anti-osteoporosis therapies, appropriate bone grafting and fracture healing accelerating. We summarize misconceptions and repair strategies for osteoporotic fracture management, expecting improvement of prognosis and clinical outcomes for osteoporotic fractures, to further improve therapeutic effect and living quality of patients.
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Affiliation(s)
- Xiao Chen
- Department of Traumatic Orthopedics, First Affiliated Hospital of Navy Medical University, Shanghai, China
| | - Yan Hu
- Institute of Translational Medicine, Shanghai University, Shanghai, China
| | - Zhen Geng
- Institute of Translational Medicine, Shanghai University, Shanghai, China
| | - Jiacan Su
- Department of Traumatic Orthopedics, First Affiliated Hospital of Navy Medical University, Shanghai, China
- Institute of Translational Medicine, Shanghai University, Shanghai, China
- *Correspondence: Jiacan Su,
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Deng R, Li C, Wang X, Chang L, Ni S, Zhang W, Xue P, Pan D, Wan M, Deng L, Cao X. Periosteal CD68 + F4/80 + Macrophages Are Mechanosensitive for Cortical Bone Formation by Secretion and Activation of TGF-β1. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2103343. [PMID: 34854257 PMCID: PMC8787385 DOI: 10.1002/advs.202103343] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Revised: 11/04/2021] [Indexed: 05/16/2023]
Abstract
Mechanical force regulates bone density, modeling, and homeostasis. Substantial periosteal bone formation is generated by external mechanical stimuli, yet its mechanism is poorly understood. Here, it is shown that myeloid-lineage cells differentiate into subgroups and regulate periosteal bone formation in response to mechanical loading. Mechanical loading on tibiae significantly increases the number of periosteal myeloid-lineage cells and the levels of active transforming growth factor β (TGF-β), resulting in cortical bone formation. Knockout of Tgfb1 in myeloid-lineage cells attenuates mechanical loading-induced periosteal bone formation in mice. Moreover, CD68+ F4/80+ macrophages, a subtype of myeloid-lineage cells, express and activate TGF-β1 for recruitment of osteoprogenitors. Particularly, mechanical loading induces the differentiation of periosteal CD68+ F4/80- myeloid-lineage cells to the CD68+ F4/80+ macrophages via signaling of piezo-type mechanosensitive ion channel component 1 (Piezo1) for TGF-β1 secretion. Importantly, CD68+ F4/80+ macrophages activate TGF-β1 by expression and secretion of thrombospondin-1 (Thbs1). Administration of Thbs1 inhibitor significantly impairs loading-induced TGF-β activation and recruitment of osteoprogenitors in the periosteum. The results suggest that periosteal myeloid-lineage cells respond to mechanical forces and consequently produce and activate TGF-β1 for periosteal bone formation.
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Affiliation(s)
- Ruoxian Deng
- Department of Orthopaedic SurgeryThe Johns Hopkins University School of MedicineBaltimoreMD21205USA
- Department of Biomedical EngineeringThe Johns Hopkins UniversityBaltimoreMD21205USA
| | - Changwei Li
- Shanghai Key Laboratory for Prevention and Treatment of Bone and Joint DiseasesShanghai Institute of Traumatology and OrthopaedicsRuijin HospitalShanghai Jiaotong University School of MedicineShanghai200025China
| | - Xiao Wang
- Department of Orthopaedic SurgeryThe Johns Hopkins University School of MedicineBaltimoreMD21205USA
| | - Leilei Chang
- Shanghai Key Laboratory for Prevention and Treatment of Bone and Joint DiseasesShanghai Institute of Traumatology and OrthopaedicsRuijin HospitalShanghai Jiaotong University School of MedicineShanghai200025China
| | - Shuangfei Ni
- Department of Orthopaedic SurgeryThe Johns Hopkins University School of MedicineBaltimoreMD21205USA
| | - Weixin Zhang
- Department of Orthopaedic SurgeryThe Johns Hopkins University School of MedicineBaltimoreMD21205USA
| | - Peng Xue
- Department of Orthopaedic SurgeryThe Johns Hopkins University School of MedicineBaltimoreMD21205USA
| | - Dayu Pan
- Department of Orthopaedic SurgeryThe Johns Hopkins University School of MedicineBaltimoreMD21205USA
| | - Mei Wan
- Department of Orthopaedic SurgeryThe Johns Hopkins University School of MedicineBaltimoreMD21205USA
| | - Lianfu Deng
- Shanghai Key Laboratory for Prevention and Treatment of Bone and Joint DiseasesShanghai Institute of Traumatology and OrthopaedicsRuijin HospitalShanghai Jiaotong University School of MedicineShanghai200025China
| | - Xu Cao
- Department of Orthopaedic SurgeryThe Johns Hopkins University School of MedicineBaltimoreMD21205USA
- Department of Biomedical EngineeringThe Johns Hopkins UniversityBaltimoreMD21205USA
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Negri S, Samuel TJ, Lee S. The Potential Role of Exercise Training and Mechanical Loading on Bone-Associated Skeletal Nerves. J Bone Metab 2021; 28:267-277. [PMID: 34905674 PMCID: PMC8671028 DOI: 10.11005/jbm.2021.28.4.267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Accepted: 11/07/2021] [Indexed: 11/11/2022] Open
Abstract
The spatial distribution, innervation, and functional role of the bone-associated skeletal nerves have been previously reported in detail. However, studies examining exercise-induced associations between skeletal nerves and bone metabolism are limited. This review introduces a potential relationship between exercise and the skeletal nerves and discusses how it can contribute to exercise-induced bone anabolism. First, the background and current understanding of nerve fiber types and their functions in the skeleton are provided. Next, the influence of exercise and mechanical loading on the skeletal nervous system is elaborated. Effective synthesis of recent studies could serve as an established baseline for the novel discovery of the effects of exercise on skeletal nerve density and bone anabolic activity in the future. Therefore, this review overviews the existing evidence for the neural control of bone metabolism and the potential positive effects of exercise on the peripheral skeletal nervous system. The influence of exercise training models on the relationships of sensory nerve signals with osteoblast-mediated bone formation and the increased bone volume provides the first insight on the potential importance of exercise training in stimulating positive adaptations in the skeletal nerve-bone interaction and its downstream effect on bone metabolism, thereby highlighting its therapeutic potential in a variety of clinical populations.
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Affiliation(s)
- Stefano Negri
- Department of Orthopedics and Trauma Surgery, Department of Surgery, Dentistry, Pediatrics and Gynecology of the University of Verona, Verona, Italy
| | - T Jake Samuel
- Division of Cardiology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Seungyong Lee
- Department of Physiology, College of Graduate Studies, Midwestern University Arizona College of Osteopathic Medicine, Glendale, AZ, USA
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Wee NK, Sims NA, Morello R. The Osteocyte Transcriptome: Discovering Messages Buried Within Bone. Curr Osteoporos Rep 2021; 19:604-615. [PMID: 34757588 PMCID: PMC8720072 DOI: 10.1007/s11914-021-00708-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 09/24/2021] [Indexed: 12/16/2022]
Abstract
PURPOSE OF THE REVIEW Osteocytes are cells embedded within the bone matrix, but their function and specific patterns of gene expression remain only partially defined; this is beginning to change with recent studies using transcriptomics. This unbiased approach can generate large amounts of data and is now being used to identify novel genes and signalling pathways within osteocytes both at baseline conditions and in response to stimuli. This review outlines the methods used to isolate cell populations containing osteocytes, and key recent transcriptomic studies that used osteocyte-containing preparations from bone tissue. RECENT FINDINGS Three common methods are used to prepare samples to examine osteocyte gene expression: digestion followed by sorting, laser capture microscopy, and the isolation of cortical bone shafts. All these methods present challenges in interpreting the data generated. Genes previously not known to be expressed by osteocytes have been identified and variations in osteocyte gene expression have been reported with age, sex, anatomical location, mechanical loading, and defects in bone strength. A substantial proportion of newly identified transcripts in osteocytes remain functionally undefined but several have been cross-referenced with functional data. Future work and improved methods (e.g. scRNAseq) likely provide useful resources for the study of osteocytes and important new information on the identity and functions of this unique cell type within the skeleton.
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Affiliation(s)
- Natalie Ky Wee
- Bone Cell Biology and Disease Unit, St Vincent's Institute of Medical Research, 9 Princes St, Fitzroy, 3065, Australia
| | - Natalie A Sims
- Bone Cell Biology and Disease Unit, St Vincent's Institute of Medical Research, 9 Princes St, Fitzroy, 3065, Australia
- Department of Medicine, The University of Melbourne, St. Vincent's Hospital, Melbourne, 3065, Australia
| | - Roy Morello
- Department of Physiology & Cell Biology, University of Arkansas for Medical Sciences, Little Rock, AR, USA.
- Department of Orthopaedic Surgery, University of Arkansas for Medical Sciences, Little Rock, AR, USA.
- Division of Genetics, University of Arkansas for Medical Sciences, Little Rock, AR, USA.
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Silicified collagen scaffold induces semaphorin 3A secretion by sensory nerves to improve in-situ bone regeneration. Bioact Mater 2021; 9:475-490. [PMID: 34820584 PMCID: PMC8586786 DOI: 10.1016/j.bioactmat.2021.07.016] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2021] [Revised: 07/12/2021] [Accepted: 07/17/2021] [Indexed: 12/14/2022] Open
Abstract
Sensory nerves promote osteogenesis through the release of neuropeptides. However, the potential application and mechanism in which sensory nerves promote healing of bone defects in the presence of biomaterials remain elusive. The present study identified that new bone formation was more abundantly produced after implantation of silicified collagen scaffolds into defects created in the distal femur of rats. The wound sites were accompanied by extensive nerve innervation and angiogenesis. Sensory nerve dysfunction by capsaicin injection resulted in significant inhibition of silicon-induced osteogenesis in the aforementioned rodent model. Application of extracellular silicon in vitro induced axon outgrowth and increased expression of semaphorin 3 A (Sema3A) and semaphorin 4D (Sema4D) in the dorsal root ganglion (DRG), as detected by the upregulation of signaling molecules. Culture medium derived from silicon-stimulated DRG cells promoted proliferation and differentiation of bone marrow mesenchymal stem cells and endothelial progenitor cells. These effects were inhibited by the use of Sema3A neutralizing antibodies but not by Sema4D neutralizing antibodies. Knockdown of Sema3A in DRG blocked silicon-induced osteogenesis and angiogenesis almost completely in a femoral defect rat model, whereas overexpression of Sema3A promoted the silicon-induced phenomena. Activation of “mechanistic target of rapamycin” (mTOR) pathway and increase of Sema3A production were identified in the DRG of rats that were implanted with silicified collagen scaffolds. These findings support the role of silicon in inducing Sema3A production by sensory nerves, which, in turn, stimulates osteogenesis and angiogenesis. Taken together, silicon has therapeutic potential in orthopedic rehabilitation. Nerve innervation, vascularization and tissue mineralization integrated into a single scaffold. Silicified collagen scaffolds has therapeutic potential in orthopedic rehabilitation. Silicified collagen scaffolds promote in-situ bone regeneration via sensory nerve innervation and semaphorin 3A production.
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Oo WM, Hunter DJ. Nerve Growth Factor (NGF) Inhibitors and Related Agents for Chronic Musculoskeletal Pain: A Comprehensive Review. BioDrugs 2021; 35:611-641. [PMID: 34807432 DOI: 10.1007/s40259-021-00504-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/18/2021] [Indexed: 11/28/2022]
Abstract
Musculoskeletal pain such as osteoarthritis (OA) and low back pain (LBP) are very common and contribute to enormous burden and societal costs, despite dramatic therapeutic advances over recent decades. Novel approaches and targeted therapies are required to satisfy the urgent unmet medical need of musculoskeletal pain relief in both conditions. Nerve growth factor (NGF) inhibitors have utilized novel mechanisms different from conventional drugs, which have a variety of gastrointestinal, cardiac, or renal adverse effects. Several phase 2/3 studies have been accomplished for these drugs, such as tanezumab, fasinumab, and tyrosine receptor kinase A (TrkA) inhibitors. We searched the literature using the PubMed database and clinical trials using ClinicalTrials.gov to identify original papers, meta-analyses as well as ongoing clinical trials assessing the efficacy and safety profile of these drugs. In this narrative review, we briefly overview the disease burden of musculoskeletal pain, the role of NGF signaling and its receptors in the genesis of pain, and the mechanisms of action of inhibitors of NGF signaling and downstream pathways, and then discuss the efficacy and safety of each investigational drug in OA and LBP. Finally, we briefly review two serious adverse effects of NGF inhibitors, namely rapidly progressive OA and sympathetic system effects, and conclude with possible barriers and potential research directions to overcome these.
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Affiliation(s)
- Win Min Oo
- Rheumatology Department, Royal North Shore Hospital, and Institute of Bone and Joint Research, Kolling Institute, Faculty of Medicine and Health, The University of Sydney, Sydney, Australia.,Department of Physical Medicine and Rehabilitation, Mandalay General Hospital, University of Medicine, Mandalay, Mandalay, Myanmar
| | - David J Hunter
- Rheumatology Department, Royal North Shore Hospital, and Institute of Bone and Joint Research, Kolling Institute, Faculty of Medicine and Health, The University of Sydney, Sydney, Australia.
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