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Deng D, Liu X, Huang W, Yuan S, Liu G, Ai S, Fu Y, Xu H, Zhang X, Li S, Xu S, Bai X, Zhang Y. Osteoclasts control endochondral ossification via regulating acetyl-CoA availability. Bone Res 2024; 12:49. [PMID: 39198395 PMCID: PMC11358419 DOI: 10.1038/s41413-024-00360-6] [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: 12/19/2023] [Revised: 06/27/2024] [Accepted: 07/21/2024] [Indexed: 09/01/2024] Open
Abstract
Osteoclast is critical in skeletal development and fracture healing, yet the impact and underlying mechanisms of their metabolic state on these processes remain unclear. Here, by using osteoclast-specific small GTPase Rheb1-knockout mice, we reveal that mitochondrial respiration, rather than glycolysis, is essential for cathepsin K (CTSK) production in osteoclasts and is regulated by Rheb1 in a mechanistic target of rapamycin complex 1 (mTORC1)-independent manner. Mechanistically, we find that Rheb1 coordinates with mitochondrial acetyl-CoA generation to fuel CTSK, and acetyl-CoA availability in osteoclasts is the central to elevating CTSK. Importantly, our findings demonstrate that the regulation of CTSK by acetyl-CoA availability is critical and may confer a risk for abnormal endochondral ossification, which may be the main cause of poor fracture healing on alcohol consumption, targeting Rheb1 could successfully against the process. These findings uncover a pivotal role of mitochondria in osteoclasts and provide a potent therapeutic opportunity in bone disorders.
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Affiliation(s)
- Daizhao Deng
- Department of Cell Biology, School of Basic Medical Science, Southern Medical University, Guangzhou, 510515, Guangdong, China
| | - Xianming Liu
- Department of Cell Biology, School of Basic Medical Science, Southern Medical University, Guangzhou, 510515, Guangdong, China
| | - Wenlan Huang
- Department of Cell Biology, School of Basic Medical Science, Southern Medical University, Guangzhou, 510515, Guangdong, China
| | - Sirui Yuan
- Department of Cell Biology, School of Basic Medical Science, Southern Medical University, Guangzhou, 510515, Guangdong, China
| | - Genming Liu
- Department of Cell Biology, School of Basic Medical Science, Southern Medical University, Guangzhou, 510515, Guangdong, China
| | - Shanshan Ai
- Department of Physiology, School of Basic Medical Science, Southern Medical University, Guangzhou, 510515, Guangdong, China
| | - Yijie Fu
- Department of Cell Biology, School of Basic Medical Science, Southern Medical University, Guangzhou, 510515, Guangdong, China
| | - Haokun Xu
- Department of Cell Biology, School of Basic Medical Science, Southern Medical University, Guangzhou, 510515, Guangdong, China
| | - Xinyi Zhang
- Department of Cell Biology, School of Basic Medical Science, Southern Medical University, Guangzhou, 510515, Guangdong, China
| | - Shihai Li
- Department of Cell Biology, School of Basic Medical Science, Southern Medical University, Guangzhou, 510515, Guangdong, China
| | - Song Xu
- Department of Orthopaedics, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, Guangdong, China.
| | - Xiaochun Bai
- Department of Cell Biology, School of Basic Medical Science, Southern Medical University, Guangzhou, 510515, Guangdong, China.
| | - Yue Zhang
- Department of Cell Biology, School of Basic Medical Science, Southern Medical University, Guangzhou, 510515, Guangdong, China.
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Cai M, Peng H, Liu M, Huang M, Zheng W, Zhang G, Lai W, Liao C, Cai L, Zhang D, Liu X. Vascular Pericyte-Derived Exosomes Inhibit Bone Resorption via Traf3. Int J Nanomedicine 2023; 18:7065-7077. [PMID: 38046234 PMCID: PMC10693246 DOI: 10.2147/ijn.s438229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Accepted: 11/17/2023] [Indexed: 12/05/2023] Open
Abstract
Purpose Blood vessels distribute cells, oxygen, and nutrients throughout the body to support tissue growth and balance. Pericytes and endothelial cells form the inner wall of blood vessels, crucial for organ development and tissue homeostasis by producing paracrine signaling molecules. In the skeletal system, pericyte-derived vascular factors along with angiogenic factors released by bone cells regulate angiogenesis and bone formation. Although the involvement of angiogenic factors and skeletal blood vessels in bone homeostasis is relatively clear, the role of pericytes and the underlying mechanisms remain unknown. Here, our objective was to elucidate the significance of pericytes in regulating osteoclast differentiation. Methods We used tissue staining to detect the coverage of pericytes and osteoclasts in femoral tissues of osteoporotic mice and mice of different ages, analyzing their correlation. We developed mice with conditionally deleted pericytes, observing changes in bone mass and osteoclast activity using micro-computer tomography and tissue staining to detect the regulatory effect of pericytes on osteoclasts. Pericytes-derived exosomes (PC-EVs) were collected and co-cultured with monocytes that induce osteoclast differentiation to detect the effect of the former on the exosomes. Finally, the specific mechanism of PC-EVs regulating osteoclast differentiation was verified using RNA sequencing and Western blotting. Results Our study indicates a significant correlation between pericytes and age-related bone resorption. Conditional deletion of pericytes activated bone resorption and led to osteopenia in vivo. We discovered that PC-EVs inhibited the nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB) pathway, which is mediated by tumor necrosis factor receptor-associated factor 3 (Traf3), negatively regulating osteoclast development and bone resorption. Silencing Traf3 in PC-EVs canceled their inhibitory effect on osteoclast differentiation. Conclusion Our study provides a novel perspective into the regulatory role of pericytes on bone resorption and may provide potential strategies for developing novel anti-bone resorption therapies.
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Affiliation(s)
- Mingxiang Cai
- The First Affiliated Hospital of Jinan University, School of Stomatology, Clinical Research Platform for Interdiscipline of Stomatology, Jinan University, Guangzhou, 510630, People’s Republic of China
| | - Huizhen Peng
- The First Affiliated Hospital of Jinan University, School of Stomatology, Clinical Research Platform for Interdiscipline of Stomatology, Jinan University, Guangzhou, 510630, People’s Republic of China
| | - Minyi Liu
- The First Affiliated Hospital of Jinan University, School of Stomatology, Clinical Research Platform for Interdiscipline of Stomatology, Jinan University, Guangzhou, 510630, People’s Republic of China
| | - Maohua Huang
- College of Pharmacy, Jinan University, Guangzhou, 510632, People’s Republic of China
- Guangdong Province Key Laboratory of Pharmacodynamic Constituents of Traditional Chinese Medicine and New Drugs Research, Jinan University, Guangzhou, 510632, People’s Republic of China
| | - Wen Zheng
- The First Affiliated Hospital of Jinan University, School of Stomatology, Clinical Research Platform for Interdiscipline of Stomatology, Jinan University, Guangzhou, 510630, People’s Republic of China
| | - Guilan Zhang
- The First Affiliated Hospital of Jinan University, School of Stomatology, Clinical Research Platform for Interdiscipline of Stomatology, Jinan University, Guangzhou, 510630, People’s Republic of China
| | - Wenjia Lai
- The First Affiliated Hospital of Jinan University, School of Stomatology, Clinical Research Platform for Interdiscipline of Stomatology, Jinan University, Guangzhou, 510630, People’s Republic of China
| | - Chufang Liao
- The First Affiliated Hospital of Jinan University, School of Stomatology, Clinical Research Platform for Interdiscipline of Stomatology, Jinan University, Guangzhou, 510630, People’s Republic of China
| | - Lizhao Cai
- The First Affiliated Hospital of Jinan University, School of Stomatology, Clinical Research Platform for Interdiscipline of Stomatology, Jinan University, Guangzhou, 510630, People’s Republic of China
| | - Dongmei Zhang
- College of Pharmacy, Jinan University, Guangzhou, 510632, People’s Republic of China
- Guangdong Province Key Laboratory of Pharmacodynamic Constituents of Traditional Chinese Medicine and New Drugs Research, Jinan University, Guangzhou, 510632, People’s Republic of China
| | - Xiangning Liu
- The First Affiliated Hospital of Jinan University, School of Stomatology, Clinical Research Platform for Interdiscipline of Stomatology, Jinan University, Guangzhou, 510630, People’s Republic of China
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Li F, Guo C, Zhang S, Zheng B, Sun K, Shi J. Exploring the role and mechanism of Fuzi decoction in the treatment of osteoporosis by integrating network pharmacology and experimental verification. J Orthop Surg Res 2023; 18:508. [PMID: 37464262 DOI: 10.1186/s13018-023-03842-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Accepted: 05/08/2023] [Indexed: 07/20/2023] Open
Abstract
BACKGROUND Fuzi decoction (FZD), a traditional Chinese medicine formula, was used to treat musculoskeletal diseases by warming channels, strengthening yang and dispelling pathogenic cold and dampness. In clinical practice, FZD has been used to treat rheumatoid arthritis and osteoarthritis. It alleviated osteoarticular disorders through ameliorating the degradation of cartilage and improving meniscal damage in osteoarthritis, while its roles and mechanisms in the treatment of bone loss diseases remain unclear. This study aims to investigate the underlying mechanisms of FZD in treating osteoporosis using an integrative method of network pharmacology and experimental study. METHODS In this study, network pharmacology was used to predict the core targets and potential pathways of the bioactive ingredients of FZD to attenuate osteoporosis. Molecular docking was performed to evaluate the interactions between core compounds and key targets. In addition, both cell and animal experiments were carried out to validate the role and potential mechanism in treating osteoporosis. RESULTS In the present study, data revealed that kaempferol, beta-sitosterol, stigmasterol, fumarine, and (+)-catechin may be the primary bioactive ingredients of FZD in the treatment of osteoporosis, which were closely associated with the osteoporosis-related targets. And the KEGG results indicated that the NF-κB pathway was closely associated with the function of FZD in treating osteoporosis. In addition, in vivo demonstrated that FZD ameliorated osteoporosis. In vitro experiments showed that the pro-apoptotic factors indicators including CASP3 and BAX were decreased by FZD and the anti-apoptotic factor BCL2 was increased by FZD. In addition, FZD significantly suppressed the osteoclast differentiation in culture and the expression levels of osteoclast-related genes including TRAF6, CTSK, and MMP9. And the NF-κB pathway was confirmed, via in vitro experiment, to be involved in osteoclast differentiation. CONCLUSIONS This study demonstrated that FZD played a pivotal role in suppressing the osteoclast differentiation via regulating the NF-κB pathway, indicating that FZD could be a promising antiosteoporosis drug and deserve further investigation.
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Affiliation(s)
- Fudong Li
- Department of Orthopaedic Surgery, Spine Center, Shanghai Changzheng Hospital, Naval Medical University, Shanghai, 200003, China
| | - Chuan Guo
- Orthopedic Research Institute, Department of Orthopedics, West China Hospital, Sichuan University, Chengdu, 610065, China
| | - Shikai Zhang
- Department of Orthopaedic Surgery, Shanghai Kaiyuan Orthopaedic Hospital, Shanghai, 200129, China
| | - Bing Zheng
- Department of Orthopaedic Surgery, Spine Center, Shanghai Changzheng Hospital, Naval Medical University, Shanghai, 200003, China.
| | - Kaiqiang Sun
- Department of Orthopaedic Surgery, Spine Center, Shanghai Changzheng Hospital, Naval Medical University, Shanghai, 200003, China.
| | - Jiangang Shi
- Department of Orthopaedic Surgery, Spine Center, Shanghai Changzheng Hospital, Naval Medical University, Shanghai, 200003, China.
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Nie C, Hu J, Wang B, Li H, Yang X, Hong F. Effects of Co-exposure to Fluoride and Arsenic on TRAF-6 Signaling and NF-κB Pathway of Bone Metabolism. Biol Trace Elem Res 2022:10.1007/s12011-022-03508-9. [PMID: 36456742 DOI: 10.1007/s12011-022-03508-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/20/2022] [Accepted: 11/24/2022] [Indexed: 12/05/2022]
Abstract
Little is known about the combined effect of fluoride (F) and arsenic (As) on bone metabolism. This study aims to explore the effect of co-exposure to F and As on the expressions of TNF receptor-associated factor 6 (TRAF-6), nuclear factor-kappa B (NF-κB), and the related factors in cell and animal experiments. With the rats exposed to different doses of F, As, and combined F-As, we found that F exposure doses were positively correlated with the protein expression of receptor activator of nuclear factor-kappa B ligand (RANKL), receptor activator of nuclear factor-kappa B (RANK), TRAF-6, NF-κB, and nuclear factor of activated T cells (NFAT-c1) (P < 0.001). As exposure doses were negatively correlated with RANK, TRAF-6, NF-κB, and NFAT-c1 (P < 0.001). The effect of F and As interaction on the protein expression of RANKL, TRAF-6, NF-κB, and NFAT-c1 was significant in bone tissue (P < 0.05). In the cellular experiment, F could promote the mRNA expression of RANK, TRAF-6, and NFAT-c1. A higher concentration of As could inhibit the mRNA expression of Tartrate-resistant acid phosphatase (TRAP), RANK, TRAF-6, and NFAT-c1. The effect of F and As interaction on the mRNA expression of TRAP, RANK, TRAF-6, and NFATc1 in osteoclasts was significant (P < 0.001). In conclusion, the expression of TRAF-6 and NF-κB pathway was affected by F and As co-exposure in osteogenic differentiation, and As could antagonize the promoting effect of F on the expression of TRAF-6, TRAP, RANKL, RANK, NF-κB, and NFAT-c1 in these exposure levels. These results could provide a scientific basis for understanding the interaction of F and As in bone formation.
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Affiliation(s)
- Chan Nie
- School of Public Health, the Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang, 550025, China
| | - Junwei Hu
- School of Public Health, the Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang, 550025, China
| | - Bingjie Wang
- School of Public Health, the Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang, 550025, China
| | - Hao Li
- School of Public Health, the Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang, 550025, China
| | - Xing Yang
- School of Public Health, the Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang, 550025, China
| | - Feng Hong
- School of Public Health, the Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang, 550025, China.
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Lin B, Xu P, Zheng J, Deng X, Ye Q, Huang Z, Wang N. Effects and mechanisms of natural alkaloids for prevention and treatment of osteoporosis. Front Pharmacol 2022; 13:1014173. [PMID: 36210805 PMCID: PMC9539536 DOI: 10.3389/fphar.2022.1014173] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Accepted: 08/31/2022] [Indexed: 11/20/2022] Open
Abstract
Natural alkaloids are polycyclic, nitrogen-containing, and basic compounds obtained from plants. In this review, the advances in bioactive alkaloids with respect to their chemical structures, herbal sources, and effects for the prevention and treatment of osteoporosis are discussed. Anti-osteoporosis alkaloids are classified into six categories based on the chemical structure, namely, isoquinoline alkaloids, quinolizidine alkaloids, piperidine alkaloids, indole alkaloids, pyrrolizidine alkaloids and steroidal alkaloids. They promote mesenchymal stem cells differentiation, improve osteoblast proliferation, stimulate osteoblast autophagy and suppress osteoclast formation. These natural alkaloids can regulate multiple signaling pathways, including interrupting the tumor necrosis factor receptor associated factor 6- receptor activator of nuclear factor kappa B interaction, inhibiting the nuclear factor kappa B pathway in osteoclasts, activating the p38 mitogen-activated protein kinases pathway in osteoblasts, and triggering the wingless and int-1 pathway in mesenchymal stem cells. This review provides evidence and support for novel drug and clinical treatment of osteoporosis using natural alkaloids.
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Affiliation(s)
- Bingfeng Lin
- Department of Medicine, Zhejiang Academy of Traditional Chinese Medicine, Hangzhou, China
| | - Pingcui Xu
- Department of Medicine, Zhejiang Academy of Traditional Chinese Medicine, Hangzhou, China
| | - Juan Zheng
- Hangzhou Institute for Food and Drug Control, Hangzhou, China
| | - Xuehui Deng
- School of Pharmacy, Zhejiang Chinese Medical University, Hangzhou, China
| | - Qitao Ye
- School of Pharmacy, Zhejiang Chinese Medical University, Hangzhou, China
| | - Zhongping Huang
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou, China
| | - Nani Wang
- Department of Medicine, Zhejiang Academy of Traditional Chinese Medicine, Hangzhou, China
- *Correspondence: Nani Wang,
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A Review of Signaling Transduction Mechanisms in Osteoclastogenesis Regulation by Autophagy, Inflammation, and Immunity. Int J Mol Sci 2022; 23:ijms23179846. [PMID: 36077242 PMCID: PMC9456406 DOI: 10.3390/ijms23179846] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2022] [Revised: 08/22/2022] [Accepted: 08/26/2022] [Indexed: 11/16/2022] Open
Abstract
Osteoclastogenesis is an ongoing rigorous course that includes osteoclast precursors fusion and bone resorption executed by degradative enzymes. Osteoclastogenesis is controlled by endogenous signaling and/or regulators or affected by exogenous conditions and can also be controlled both internally and externally. More evidence indicates that autophagy, inflammation, and immunity are closely related to osteoclastogenesis and involve multiple intracellular organelles (e.g., lysosomes and autophagosomes) and certain inflammatory or immunological factors. Based on the literature on osteoclastogenesis induced by different regulatory aspects, emerging basic cross-studies have reported the emerging disquisitive orientation for osteoclast differentiation and function. In this review, we summarize the partial potential therapeutic targets for osteoclast differentiation and function, including the signaling pathways and various cellular processes.
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Chanpaisaeng K, Reyes‐Fernandez PC, Dilkes B, Fleet JC. Diet X Gene Interactions Control Femoral Bone Adaptation To Low Dietary Calcium. JBMR Plus 2022; 6:e10668. [PMID: 36111202 PMCID: PMC9465001 DOI: 10.1002/jbm4.10668] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Revised: 06/29/2022] [Accepted: 07/22/2022] [Indexed: 11/12/2022] Open
Affiliation(s)
- Krittikan Chanpaisaeng
- Functional Ingredients and Food Innovation Research Group, National Center for Genetic Engineering and Biotechnology (BIOTEC), National Science and Technology Development Agency (NSTDA) Pathum Thani Thailand
| | - Perla C. Reyes‐Fernandez
- School of Health and Human Sciences, Department of Physical Therapy Indiana University ‐ Purdue University Indianapolis Indianapolis IN USA
| | - Brian Dilkes
- Center for Plant Biology Purdue University West Lafayette IN USA
- Department of Biochemistry Purdue University West Lafayette IN USA
| | - James C. Fleet
- Department of Nutritional Sciences and the Dell Pediatric Research Institute University of Texas Austin TX USA
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Song S, Guo Y, Yang Y, Fu D. Advances in pathogenesis and therapeutic strategies for osteoporosis. Pharmacol Ther 2022; 237:108168. [PMID: 35283172 DOI: 10.1016/j.pharmthera.2022.108168] [Citation(s) in RCA: 126] [Impact Index Per Article: 63.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2022] [Revised: 02/25/2022] [Accepted: 03/07/2022] [Indexed: 02/07/2023]
Abstract
Osteoporosis, is the most common bone disorder worldwide characterized by low bone mineral density, leaving affected bones vulnerable to fracture. Bone homeostasis depends on the precise balance between bone resorption by osteoclasts and bone matrix formation by mesenchymal lineage osteoblasts, and involves a series of complex and highly regulated steps. Bone homeostasis will be disrupted when the speed of bone resorption is faster than bone formation. Based on various regulatory mechanisms of bone homeostasis, a series of drugs targeting osteoporosis have emerged in clinical practice, including bisphosphonates, selective estrogen receptor modulators, calcitonin, molecular-targeted drugs and so on. However, many drugs have major adverse effects or are unsuitable for long-term use. Therefore, it is very urgent to find more effective therapeutic drugs based on the new pathogenesis of osteoporosis. In this review, we summarize novel mechanisms involved in the pathological process of osteoporosis, including the roles of gut microbiome, autophagy, iron balance and cellular senescence. Based on the above pathological mechanism, we found promising drugs for osteoporosis treatment, such as: probiotics, alpha-ketoglutarate, senolytics and hydrogen sulfide. This new finding may provide an important basis for elucidating the complex pathological mechanisms of osteoporosis and provide promising drugs for clinical osteoporosis treatment.
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Affiliation(s)
- Shasha Song
- College of Pharmacy, Shenzhen Technology University, Shenzhen 518118, PR China
| | - Yuanyuan Guo
- Department of Pharmacy, Liyuan Hospital, Tongji Medical School, Huazhong University of Science and Technology, Wuhan, Hubei 430077, PR China
| | - Yuehua Yang
- Department of Orthopedics, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200080, PR China
| | - Dehao Fu
- Department of Orthopedics, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200080, PR China.
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