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Miao Y, Zhao L, Lei S, Zhao C, Wang Q, Tan C, Peng C, Gong J. Caffeine regulates both osteoclast and osteoblast differentiation via the AKT, NF-κB, and MAPK pathways. Front Pharmacol 2024; 15:1405173. [PMID: 38939843 PMCID: PMC11208461 DOI: 10.3389/fphar.2024.1405173] [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: 03/26/2024] [Accepted: 05/24/2024] [Indexed: 06/29/2024] Open
Abstract
Background: Although caffeine generally offers benefits to human health, its impact on bone metabolism remains unclear. Aim and Methods: This study aimed to systematically evaluate the long-term effects of caffeine administration on osteoclasts, osteoblasts, and ovariectomy-induced postmenopausal osteoporosis (OP). Results: Our in vitro findings revealed that 3.125 and 12.5 μg/mL caffeine inhibited RANKL-mediated osteoclastogenesis in RAW 264.7 cells through the MAPK and NF-κB pathways, accompanied by the inactivation of nuclear translocation of nuclear factor NFATc1. Similarly, 3.125 and 12.5 μg/mL of caffeine modulated MC3T3-E1 osteogenesis via the AKT, MAPK, and NF-κB pathways. However, 50 μg/mL of caffeine promoted the phosphorylation of IκBα, P65, JNK, P38, and AKT, followed by the activation of NFATc1 and the inactivation of Runx2 and Osterix, ultimately disrupting the balance between osteoblastogenesis and osteoclastogenesis. In vivo studies showed that gavage with 55.44 mg/kg caffeine inhibited osteoclastogenesis, promoted osteogenesis, and ameliorated bone loss in ovariectomized mice. Conclusion: Conversely, long-term intake of high-dose caffeine (110.88 mg/kg) disrupted osteogenesis activity and promoted osteoclastogenesis, thereby disturbing bone homeostasis. Collectively, these findings suggest that a moderate caffeine intake (approximately 400 mg in humans) can regulate bone homeostasis by influencing both osteoclasts and osteoblasts. However, long-term high-dose caffeine consumption (approximately 800 mg in humans) could have detrimental effects on the skeletal system.
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Affiliation(s)
- Yue Miao
- College of Food Science and Technology, Yunnan Agricultural University, Kunming, Yunnan, China
- Medicinal Plants Research Institute, Yunnan Academy of Agricultural Sciences, Kunming, Yunnan, China
| | - Lei Zhao
- College of Science, Yunnan Agricultural University, Kunming, China
| | - Shuwen Lei
- College of Food Science and Technology, Yunnan Agricultural University, Kunming, Yunnan, China
| | - Chunyan Zhao
- College of Food Science and Technology, Yunnan Agricultural University, Kunming, Yunnan, China
| | - Qiuping Wang
- College of Food Science and Technology, Yunnan Agricultural University, Kunming, Yunnan, China
| | - Chao Tan
- College of Food Science and Technology, Yunnan Agricultural University, Kunming, Yunnan, China
| | - Chunxiu Peng
- College of Horticulture and Landscape, Yunnan Agricultural University, Kunming, China
| | - Jiashun Gong
- College of Food Science and Technology, Yunnan Agricultural University, Kunming, Yunnan, China
- Agro-Products Processing Research Institute, Yunnan Academy of Agricultural Sciences, Kunming, China
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2
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Li F, Liu X, Li M, Wu S, Le Y, Tan J, Zhu C, Wan Q. Inhibition of PKM2 suppresses osteoclastogenesis and alleviates bone loss in mouse periodontitis. Int Immunopharmacol 2024; 129:111658. [PMID: 38359663 DOI: 10.1016/j.intimp.2024.111658] [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: 12/14/2023] [Revised: 01/29/2024] [Accepted: 02/04/2024] [Indexed: 02/17/2024]
Abstract
BACKGROUND Chronic periodontitis triggers an increase in osteoclastogenesis, with glycolysis playing a crucial role in this process. Pyruvate kinase M2 (PKM2) is a critical enzyme involved in glycolysis and pyruvate metabolism. Yet, the precise function of PKM2 in osteoclasts and their formation remains unclear and requires further investigation. METHODS Bioinformatics was used to investigate critical biological processes in osteoclastogenesis. In vitro, osteoclastogenesis was analyzed using tartrate-resistant acid phosphatase (TRAP) staining, phalloidin staining, quantitative real‑time PCR (RT-qPCR), and Western blotting. Small interfering RNA (siRNA) of PKM2 and Shikonin, a specific inhibitor of PKM2, were used to verify the role of PKM2 in osteoclastogenesis. The mouse model of periodontitis was used to assess the effect of shikonin on bone loss. Analyses included micro computed tomography, immunohistochemistry, flow cytometry, TRAP staining and HE staining. RESULTS Bioinformatic analysis revealed a significant impact of glycolysis and pyruvate metabolism on osteoclastogenesis. Inhibition of PKM2 leads to a significant reduction in osteoclastogenesis. In vitro, co-culture of the heat-killed Porphyromonas gingivalis significantly promoted osteoclastogenesis, concomitant with an increased PKM2 expression in osteoclasts. Shikonin weakened the promoting effect of porphyromonas gingivalis on osteoclastogenesis. In vivo experiments demonstrated that inhibition of PKM2 by shikonin alleviated bone loss induced by periodontitis, suppressed excessive osteoclastogenesis in alveolar bone, and reduced tissue inflammation to some extent. CONCLUSION PKM2 inhibition by shikonin, a specific inhibitor of this enzyme, attenuated osteoclastogenesis and bone resorption in periodontitis. Shikonin appears to be a promising therapeutic agent for treating periodontitis.
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Affiliation(s)
- Feng Li
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, China.
| | - Xinyuan Liu
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, China.
| | - Mingjuan Li
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, China.
| | - Shuxuan Wu
- Applied Oral Sciences and Community Dental Care, Faculty of Dentistry, The University of Hong Kong, Hong Kong, China.
| | - Yushi Le
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, China.
| | - Jingjing Tan
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, China.
| | - Chongjie Zhu
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, China.
| | - Qilong Wan
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Key Laboratory of Oral Biomedicine Ministry of Education, Hubei Key Laboratory of Stomatology, School & Hospital of Stomatology, Wuhan University, China.
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3
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Yu X, Wu Q, Ren Z, Chen B, Wang D, Yuan T, Ding H, Wang Y, Yuan G, Wang Y, Zhang L, Zhao J, Sun Z. Kaempferol attenuates wear particle-induced inflammatory osteolysis via JNK and p38-MAPK signaling pathways. JOURNAL OF ETHNOPHARMACOLOGY 2024; 318:117019. [PMID: 37574017 DOI: 10.1016/j.jep.2023.117019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Revised: 08/06/2023] [Accepted: 08/08/2023] [Indexed: 08/15/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Wear particle-induced inflammatory osteoclast activation is a master contributor to periprosthetic osteolysis, which can cause pathological bone loss and destruction. Hence, inhibiting inflammation and osteoclastogenesis is an important strategy for preventing wear particle-induced osteolysis. To date, there are no FDA-approved non-surgical pharmacotherapies for arresting periprosthetic osteolysis. Kaempferol (KAE), a natural flavonol abundant in many traditional Chinese herbal medicines, has been shown to have protective effects against inflammatory bone diseases such as rheumatoid arthritis, but no previous study has evaluated the effects of KAE on wear particle-induced osteolysis. AIM OF THE STUDY The study aimed to investigate the effects of KAE on wear particle-induced inflammatory osteolysis and osteoclast activation, and further explore the underlying mechanisms. MATERIALS AND METHODS TiAl6V4 metal particles (TiPs) were retrieved from the prosthesis of patients who underwent revision hip arthroplasty due to aseptic loosening. A mouse calvarial osteolysis model was used to investigate the effects of KAE on wear particle-induced inflammatory osteolysis in vivo. Primary bone marrow-derived macrophages (BMMs) were used to explore the effects of KAE on osteoclast differentiation and bone-resorbing activity as well as the underlying mechanisms in vitro. RESULTS In the present study, we found that KAE alleviated wear particle-induced inflammatory bone loss in vivo and inhibited osteoclast differentiation and function in vitro. Furthermore, we revealed that KAE exerted anti-osteoclastogenic effects by downregulating JNK and p38-MAPK signaling as well as the downstream NFATc1 expression. CONCLUSIONS KAE is an alternative therapeutic agent for preventing and treating periprosthetic osteolysis and aseptic loosening.
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Affiliation(s)
- Xin Yu
- Department of Orthopedics, Affiliated Jinling Hospital, Medical School, Nanjing University, Nanjing, 210093, China
| | - Qi Wu
- Department of Orthopedics, Affiliated Jinling Hospital, Medical School, Nanjing University, Nanjing, 210093, China; Department of Vascular Surgery, Beijing Tsinghua Changgung Hospital, School of Clinical Medicine, Tsinghua University, Beijing, 102218, China
| | - Zhengrong Ren
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Science, Nanjing University, Nanjing, 210023, China
| | - Bin Chen
- Department of Orthopedics, Affiliated Jinling Hospital, Medical School, Nanjing University, Nanjing, 210093, China
| | - Dongsheng Wang
- Department of Orthopedics, Affiliated Jinling Hospital, Medical School, Nanjing University, Nanjing, 210093, China
| | - Tao Yuan
- Department of Orthopedics, Affiliated Jinling Hospital, Medical School, Nanjing University, Nanjing, 210093, China
| | - Hao Ding
- Department of Orthopedics, Affiliated Jinling Hospital, Medical School, Nanjing University, Nanjing, 210093, China
| | - Yang Wang
- Department of Orthopedics, Affiliated Jinling Hospital, Medical School, Nanjing University, Nanjing, 210093, China
| | - Guodong Yuan
- Department of Orthopedics, Affiliated Jinling Hospital, Medical School, Nanjing University, Nanjing, 210093, China
| | - Yuxiang Wang
- Department of Orthopedics, Affiliated Jinling Hospital, Medical School, Nanjing University, Nanjing, 210093, China
| | - Lei Zhang
- Department of Orthopedics, Affiliated Jinling Hospital, Medical School, Nanjing University, Nanjing, 210093, China.
| | - Jianning Zhao
- Department of Orthopedics, Affiliated Jinling Hospital, Medical School, Nanjing University, Nanjing, 210093, China.
| | - Zhongyang Sun
- Department of Orthopedics, Affiliated Jinling Hospital, Medical School, Nanjing University, Nanjing, 210093, China; Department of Orthopedics, Air Force Hospital of Eastern Theater, Anhui Medical University, Nanjing, 210002, China.
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4
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Li Y, Cao S, Li Q, Li H, Yu L, Shao B, Yuan Q, Zou S, Zhou C. Engineered Plant Virus Complexes with a RANK Motif Modulator and Bone Targeting for Osteoporosis Treatment. ACS APPLIED MATERIALS & INTERFACES 2023; 15:11485-11495. [PMID: 36821292 DOI: 10.1021/acsami.2c19632] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Osteoporosis is a systemic skeletal disorder characterized by excessive osteoclastic bone resorption and impaired osteoblastic bone formation. Traditional delivery of antiresorptive drugs lacks a specific biodistribution in the body and may cause adverse effects to the patients. In this study, the peptide BTRM is first synthesized consisting of the bone-targeting peptide Asp8 (BT) and the peptide derived from the amino acid sequences of RANK Motif2/3 (RM), two cytoplasmic RANK motifs (PVQEET560-565 and PVQEQG604-609) that have been reported to play an important role in osteoclastogenesis. Then, BTRM is conjugated on the plant virus-like nanoparticles (VNPs) obtained from cowpea chlorotic mottle viruses (CCMVs), forming the engineered plant viruses BTRM-VNPs. In vitro experiments demonstrate that BTRM-VNPs can effectively and safely inhibit osteoclast differentiation and function. Moreover, after injection into ovariectomized mice, BTRM-VNPs show excellent capability to target bone tissue and improve osteoporotic bone loss. Collectively, the findings may provide a novel and promising strategy in the treatment of osteoporotic defects via targeting bone tissue and regulating the function of RANK Motif2/3.
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Affiliation(s)
- Yuyu Li
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610041, People's Republic of China
| | - Shuqin Cao
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610041, People's Republic of China
| | - Qiwen Li
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610041, People's Republic of China
| | - Hanwen Li
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610041, People's Republic of China
| | - Leixiao Yu
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610041, People's Republic of China
| | - Bin Shao
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610041, People's Republic of China
| | - Quan Yuan
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610041, People's Republic of China
| | - Shujuan Zou
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610041, People's Republic of China
| | - Chenchen Zhou
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, Sichuan 610041, People's Republic of China
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5
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Wang H, Bu X, Chen F, Wang Y, Chen Y. Resistant dextrin protects against pathological bone loss in ovariectomized rats and inhibits RANKL-induced osteoclastogenesis. Histol Histopathol 2022; 37:1127-1141. [PMID: 35801271 DOI: 10.14670/hh-18-492] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
BACKGROUND Osteoporosis is a common disease in postmenopausal women characterized by systemic bone mass loss, microstructure fragility and increased incidence of fractures. Resistant dextrin (RD) is a soluble fiber with beneficial metabolic effects. However, the beneficial effect of RD in osteoporosis remains to be determined. METHODS In this study, we investigated the effect of dietary RD supplement on osteoporosis in ovariectomized (OVX) rats. Both the control (sham) and OVX group rats were gavaged with RD (10 g/kg/d) or equal amount of saline for 12 weeks, and histological and biomechanical analyses were conducted to evaluate bone microstructure and strength. Furthermore, we also evaluated the effects of RD on osteoclastogenesis in bone marrow macrophages (BMMs) by detecting the expression of osteoclast-related genes using qRT-PCR and Western blot analysis. RESULTS The results showed that in OVX rats the bone strength and microstructure characteristics were significantly improved with RD supplement for 12 weeks. Additionally, the mRNA and protein expression of osteoclast markers, such as CTSK, NF-κB and NFATC1, were significantly down-regulated in BMMs isolated from RD supplement group. RD also suppressed RANKL-induced osteoclastogenesis in BMMs. CONCLUSION These findings suggest that RD ameliorates osteoporosis in OVX rats by inhibiting osteoclast differentiation. RD suppresses RANKL-induced osteoclastogenesis possibly through modulating Akt and NF-κB signaling pathways. These data indicate that a dietary supplement of RD might serve as an intervention strategy for menopausal osteoporosis.
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Affiliation(s)
- Hongwei Wang
- Department of Health Care, People's Hospital of Rizhao, Rizhao, Shandong, PR China
| | - Xiaojie Bu
- Department of Health Care, People's Hospital of Rizhao, Rizhao, Shandong, PR China
| | - Fulian Chen
- Department of Endocrinology, Affiliated Yidu Central Hospital of Weifang Medical College, Weifang, Shandong, PR China
| | - Yan Wang
- Department of Endocrinology, The Second Affiliated Hospital of Shandong First Medical University, Tai'an, Shandong, PR China
| | - Yao Chen
- Department of Clinical Nutrition, People's Hospital of Rizhao, Rizhao, Shandong, PR China.
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6
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Zhao Y, Hao X, Li Z, Feng X, Katz J, Michalek SM, Jiang H, Zhang P. Role of chromatin modulator Dpy30 in osteoclast differentiation and function. Bone 2022; 159:116379. [PMID: 35307321 PMCID: PMC9063347 DOI: 10.1016/j.bone.2022.116379] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 03/01/2022] [Accepted: 03/06/2022] [Indexed: 12/14/2022]
Abstract
Osteoclasts are the principal bone resorption cells crucial for homeostatic bone remodeling and pathological bone destruction. Increasing data demonstrate a vital role of histone methylation in osteoclastogenesis. As an integral core subunit of H3K4 methyltransferases, Dpy30 is notal as a key chromatin regulator for cell growth and differentiation and stem cell fate determination, particularly in the hematopoietic system. However, its role in osteoclastogenesis is currently unknown. Herein, we generated Dpy30F/F; LysM-Cre+/+ mice, which deletes Dpy30 in myeloid cells, to characterize its involvement in osteoclast differentiation and function. Dpy30F/F; LysM-Cre+/+ mice showed increased bone mass, evident by impaired osteoclastogenesis and defective osteoclast activity, but no alteration of osteoblast numbers and bone formation. Additionally, our ex vivo analysis showed that the loss of Dpy30 significantly impedes osteoclast differentiation and suppresses osteoclast-related gene expression. Moreover, Dpy30 deficiency significantly decreased the enrichment of H3K4me3 on the promoter region of NFATc1. Thus, we revealed a novel role for Dpy30 in osteoclastogenesis through epigenetic mechanisms, and that it could potentially be a therapeutic target for bone destruction diseases.
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Affiliation(s)
- Yanfang Zhao
- Department of Pediatric Dentistry, School of Dentistry, University of Alabama at Birmingham, Birmingham, AL 35294, USA
| | - Xiaoxiao Hao
- Department of Pediatric Dentistry, School of Dentistry, University of Alabama at Birmingham, Birmingham, AL 35294, USA
| | - Zhaofei Li
- Department of Pediatric Dentistry, School of Dentistry, University of Alabama at Birmingham, Birmingham, AL 35294, USA
| | - Xu Feng
- Department of Pathology, University of Alabama at Birmingham, Birmingham, AL 35294, USA
| | - Jannet Katz
- Department of Pediatric Dentistry, School of Dentistry, University of Alabama at Birmingham, Birmingham, AL 35294, USA
| | - Suzanne M Michalek
- Department of Microbiology, University of Alabama at Birmingham, Birmingham, AL 35294, USA
| | - Hao Jiang
- Department of Biochemistry and Molecular Genetics, University of Virginia, Charlottesville, VA 22903, USA
| | - Ping Zhang
- Department of Pediatric Dentistry, School of Dentistry, University of Alabama at Birmingham, Birmingham, AL 35294, USA.
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7
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de Andrade Pinto SA, de Nadai Dias FJ, Brasil Camargo Cardoso G, Dos Santos Junior AR, de Aro AA, Pino DS, Meneghetti DH, Vitti RP, Dos Santos GMT, de Carvalho Zavaglia CA. Polycaprolactone/Beta-Tricalcium Phosphate Scaffolds Obtained via Rotary Jet-Spinning: in vitro and in vivo Evaluation. Cells Tissues Organs 2021; 211:477-491. [PMID: 33691307 DOI: 10.1159/000511570] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Accepted: 09/10/2020] [Indexed: 11/19/2022] Open
Abstract
This study aimed to evaluate in vitro and in vivo polymeric membranes obtained by a rotary jet-spinning process for the repair of critical bone defects in the calvaria of Wistar rats, for future use in tissue engineering. Experimental sample collections were performed on the 30, 60 and 90th postoperative days, and the analyses performed were histomorphometric, immunohistochemistry, and western blotting. Reducing inflammatory infiltrate in all groups and experimental periods, angiogenesis on the 30th day did not show any difference between the groups, on the 60th day, 5% polycaprolactone/beta-tricalcium phosphate(PCL/β-TCP) was high compared to control (C), and on the 90th day, the same group reduced when compared to C and 10% PCL/β-TCP. The fibroplasia presented oscillations in every segment; on the 30th and 60th day, there was an increase in 5% PCL/β-TCP, which decreased by the 90th day compared to group C. 10% PCL/β-TCP decreased compared to C on the 60th and 90th day. The percentage of the collagen area remained high in all groups and all experimental periods. Immunohistochemistry quantifications showed variations in bone metabolism suggesting new bone formation. The 5 and 10% PCL/β-TCP scaffold were promising for the bone regeneration process because they participated in the modulation of inflammation, angiogenesis, fibroplasia, and collagenosis.
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Affiliation(s)
- Stella Aparecida de Andrade Pinto
- Department of Materials Engineering, University of Campinas, Campinas, Brazil, .,School of Dentistry, Herminio Ometto University Center, Araras, Brazil,
| | - Francisco José de Nadai Dias
- Department of Materials Engineering, University of Campinas, Campinas, Brazil.,School of Dentistry, Herminio Ometto University Center, Araras, Brazil
| | | | | | - Andréa Aparecida de Aro
- School of Dentistry, Herminio Ometto University Center, Araras, Brazil.,Graduate Program of Biomedical Sciences, Herminio Ometto University Center, Araras, Brazil
| | - Danilo Siqueira Pino
- Department of Materials Engineering, University of Campinas, Campinas, Brazil.,School of Dentistry, Herminio Ometto University Center, Araras, Brazil
| | - Damaris Helena Meneghetti
- School of Dentistry, Herminio Ometto University Center, Araras, Brazil.,Graduate Program of Biomedical Sciences, Herminio Ometto University Center, Araras, Brazil
| | - Rafael Pino Vitti
- School of Dentistry, Herminio Ometto University Center, Araras, Brazil
| | - Gláucia Maria Tech Dos Santos
- School of Dentistry, Herminio Ometto University Center, Araras, Brazil.,Graduate Program of Biomedical Sciences, Herminio Ometto University Center, Araras, Brazil
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8
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Russo R, Mallia S, Zito F, Lampiasi N. Long-Lasting Activity of ERK Kinase Depends on NFATc1 Induction and Is Involved in Cell Migration-Fusion in Murine Macrophages RAW264.7. Int J Mol Sci 2020; 21:ijms21238965. [PMID: 33255852 PMCID: PMC7728313 DOI: 10.3390/ijms21238965] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Revised: 11/19/2020] [Accepted: 11/23/2020] [Indexed: 02/07/2023] Open
Abstract
Macrophages are mononuclear cells that become osteoclasts (OCs) in the presence of two cytokines, macrophage colony-stimulating factor (M-CSF), and receptor activator of NF-κB ligand (RANKL). RANKL binding to its specific receptor RANK leads to OCs differentiation mainly by nuclear factor of activated T-cells cytoplasmic 1 (NFATc1). In our previous study, the analysis of the protein network in NFATc1-knockdown cells, using the Ingenuity Pathway Analysis (IPA), showed a link between NFATc1 and Mitogen-activated protein kinase kinase (MEK)-extracellular receptor kinase (ERK) signaling pathway. Therefore, this study aimed to extend our knowledge of the relationship between NFATc1 and the ERK. Here, we demonstrate that delayed ERK1/2 phosphorylation in pre-OC RANKL-induced depends on NFATc1. Indeed, the knockdown of NFATc1 reduced the phosphorylation of ERK1/2 (60%) and the pharmacological inhibition of the ERK1/2 kinase activity impairs the expression of NFATc1 without preventing its translocation into the nucleus. Furthermore, silencing of NFATc1 significantly reduced RANKL-induced migration (p < 0.01), and most pre-OCs are still mononuclear after 48 h (80 ± 5%), despite the presence of actin rings. On the other hand, the inhibitors FR180204 and PD98059 significantly reduced RANKL-induced cell migration (p < 0.01), leading to a reduction in the number of multinucleated cells. Finally, we suggest that long-lasting ERK activity depends on NFATc1 induction and is likely linked to cell migration, fusion, and OC differentiation.
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9
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Xue JY, Wang Z, Smithson SF, Burren CP, Matsumoto N, Nishimura G, Ikegawa S, Guo L. The third case of TNFRSF11A-associated dysosteosclerosis with a mutation producing elongating proteins. J Hum Genet 2020; 66:371-377. [PMID: 33037392 DOI: 10.1038/s10038-020-00831-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Revised: 08/03/2020] [Accepted: 08/19/2020] [Indexed: 11/09/2022]
Abstract
Dysosteosclerosis (DOS) is a distinct form of sclerosing bone disease characterized by platyspondyly and progressive osteosclerosis. DOS is genetically heterogeneous. Three causal genes, SLC29A3, CSF1R, and TNFRSF11A are reported. TNFRSF11A-associated DOS has been identified in two patients; however, TNFRSF11A is also a causal gene for osteopetrosis, autosomal recessive 7 (OP-AR7). Whole-exome sequencing in a patient with sclerosing bone disease identified novel compound heterozygous variants (c.414_427 + 7del, c.1664del) in TNFRSF11A. We examined the impact of the two variants on five splicing isoforms of TNFRSF11A by RT-PCR. We found that c.1664del resulted in elongated proteins (p.S555Cfs*121, etc.), while c.414_427 + 7del generated two aberrant splicing products (p.A139Wfs*19 and p.E132Dfs*19) that lead to nonsense mediated mRNA decay (NMD). In the previous two cases of TNFRSF11A-associated DOS, their mutations produced truncated TNFRSF11A protein isoforms. The mutations in all three cases thus contrast with TNFRSF11A mutations reported in OP-AR7, which does not generated truncated or elongated TNFRSF11A proteins. Thus, we identified the third case of TNFRSF11A-associated DOS and reinforced the genotype-phenotype correlation that aberrant protein-producing TNFRSF11A mutations cause DOS.
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Affiliation(s)
- Jing-Yi Xue
- Laboratory for Bone and Joint Diseases, RIKEN Center for Integrative Medical Sciences, Tokyo, Japan.,Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Zheng Wang
- Laboratory for Bone and Joint Diseases, RIKEN Center for Integrative Medical Sciences, Tokyo, Japan.,Department of Medical Genetics, Institute of Basic Medical Sciences, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, People's Republic of China
| | - Sarah F Smithson
- Bristol Medical School Translational Health Sciences, University of Bristol, Bristol, UK.,Department of Clinical Genetics, St Michaels Hospital, University Hospitals Bristol and Weston NHS Foundation Trust, Bristol, UK
| | - Christine P Burren
- Bristol Medical School Translational Health Sciences, University of Bristol, Bristol, UK.,Department of Paediatric Endocrinology, Bristol Royal Hospital for Children, University Hospitals Bristol and Weston NHS Foundation Trust, Bristol, UK
| | - Naomichi Matsumoto
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Yokohama, Japan
| | - Gen Nishimura
- Laboratory for Bone and Joint Diseases, RIKEN Center for Integrative Medical Sciences, Tokyo, Japan
| | - Shiro Ikegawa
- Laboratory for Bone and Joint Diseases, RIKEN Center for Integrative Medical Sciences, Tokyo, Japan.
| | - Long Guo
- Laboratory for Bone and Joint Diseases, RIKEN Center for Integrative Medical Sciences, Tokyo, Japan.
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10
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Zhao Y, Li Z, Su L, Ballesteros-Tato A, Katz J, Michalek SM, Feng X, Zhang P. Frontline Science: Characterization and regulation of osteoclast precursors following chronic Porphyromonas gingivalis infection. J Leukoc Biol 2020; 108:1037-1050. [PMID: 33463750 DOI: 10.1002/jlb.1hi0620-230r] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Revised: 06/30/2020] [Accepted: 07/07/2020] [Indexed: 12/14/2022] Open
Abstract
Bone destruction in inflammatory osteolytic diseases including periodontitis is related to excessive activity of osteoclasts (OC), which originate from precursor cells of the myeloid lineage, termed osteoclast precursors (OCP). In contrast to ample knowledge that we currently have on mature OC, little is known about OCP and their regulation during bacterial infection. Therefore, this study aimed to identify and characterize OCP following chronic infection with a periodontal bacteria Porphyromonas gingivalis (Pg). We used a microosmotic pump to continually release Pg subcutaneously in a murine model. Two weeks after Pg infection, the frequency of CD11b+c-fms+Ly6Chi population is significantly elevated within the bone marrow, spleen, and peripheral blood. In vitro and in vivo studies identified these cells as the OCP-containing population and Pg infection significantly enhanced the osteoclastogenic activity of these cells. Furthermore, mRNA sequencing analysis indicated a unique gene and pathway profile in CD11b+c-fms+Ly6Chi population following Pg infection, with changes in genes and pathways related to OC differentiation, cell proliferation and apoptosis, inflammatory response, phagocytosis, and immunity, as well as antigen processing and presentation. Moreover, using IL-6 knockout mice, we found that IL-6 is important for Pg-induced accumulation of CD11b+c-fms+Ly6Chi population from the bone marrow and periphery. Our results provide new insight into the characterization and regulation of OCP following a chronic bacterial infection. This knowledge is relevant to the understanding of the pathogenesis of bacteria-induced bone loss, and to the identification of potential therapeutic targets of bone loss diseases.
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Affiliation(s)
- Yanfang Zhao
- Department of Pediatric Dentistry, School of Dentistry, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Zhaofei Li
- Department of Pediatric Dentistry, School of Dentistry, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Lingkai Su
- Department of Pediatric Dentistry, School of Dentistry, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | | | - Jannet Katz
- Department of Pediatric Dentistry, School of Dentistry, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Suzanne M Michalek
- Department of Microbiology, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Xu Feng
- Department of Pathology, University of Alabama at Birmingham, Birmingham, Alabama, USA
| | - Ping Zhang
- Department of Pediatric Dentistry, School of Dentistry, University of Alabama at Birmingham, Birmingham, Alabama, USA
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Zhou YM, Yang YY, Jing YX, Yuan TJ, Sun LH, Tao B, Liu JM, Zhao HY. BMP9 Reduces Bone Loss in Ovariectomized Mice by Dual Regulation of Bone Remodeling. J Bone Miner Res 2020; 35:978-993. [PMID: 31914211 DOI: 10.1002/jbmr.3957] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Revised: 12/22/2019] [Accepted: 12/28/2019] [Indexed: 12/18/2022]
Abstract
Bone remodeling is dynamic and is tightly regulated through bone resorption dominated by osteoclasts and bone formation dominated by osteoblasts. Imbalances in this process can cause various pathological conditions, such as osteoporosis. Bone morphogenetic protein 9 (BMP9), a biomolecule produced and secreted by the liver, has many pharmacological effects, including anti-liver fibrosis, antitumor, anti-heart failure, and antidiabetic activities. However, the effects of BMP9 on the regulation of osteoblast and osteoclast functions and the underlying molecular mechanism(s) have not yet been investigated. In this study, BMP9 increased the expression of osteoblastogenic gene markers, such as ALP, Cola1, OCN, RUNX2, and OSX, and ALP activity in MC3T3-E1 cells by upregulating LGR6 and activating the Wnt/β-catenin pathway. BMP9 also suppressed receptor activator of nuclear factor-κB (NF-κB) ligand (RANKL)-induced osteoclast differentiation of bone marrow macrophages (BMMs) by inhibiting the Akt-NF-κB-NFATc1 pathway. More importantly, in an ovariectomy (OVX) mouse model, BMP9 attenuated bone loss and improved bone biomechanical properties in vivo by increasing bone-forming activity and suppressing bone resorption activity. Accordingly, our current work highlights the dual regulatory effects that BMP9 exerts on bone remodeling by promoting bone anabolic activity and inhibiting osteoclast differentiation in OVX mice. © 2020 American Society for Bone and Mineral Research.
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Affiliation(s)
- Yan-Man Zhou
- Department of Endocrine and Metabolic Diseases, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Institute of Endocrine and Metabolic Diseases, Shanghai Clinical Center for Endocrine and Metabolic Diseases, Shanghai, China
| | - Yu-Ying Yang
- Department of Endocrine and Metabolic Diseases, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Institute of Endocrine and Metabolic Diseases, Shanghai Clinical Center for Endocrine and Metabolic Diseases, Shanghai, China
| | - Yi-Xuan Jing
- Department of Endocrine and Metabolic Diseases, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Institute of Endocrine and Metabolic Diseases, Shanghai Clinical Center for Endocrine and Metabolic Diseases, Shanghai, China
| | - Tian-Jiao Yuan
- Department of Endocrine and Metabolic Diseases, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Institute of Endocrine and Metabolic Diseases, Shanghai Clinical Center for Endocrine and Metabolic Diseases, Shanghai, China
| | - Li-Hao Sun
- Department of Endocrine and Metabolic Diseases, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Institute of Endocrine and Metabolic Diseases, Shanghai Clinical Center for Endocrine and Metabolic Diseases, Shanghai, China
| | - Bei Tao
- Department of Endocrine and Metabolic Diseases, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Institute of Endocrine and Metabolic Diseases, Shanghai Clinical Center for Endocrine and Metabolic Diseases, Shanghai, China
| | - Jian-Min Liu
- Department of Endocrine and Metabolic Diseases, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Institute of Endocrine and Metabolic Diseases, Shanghai Clinical Center for Endocrine and Metabolic Diseases, Shanghai, China
| | - Hong-Yan Zhao
- Department of Endocrine and Metabolic Diseases, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai Institute of Endocrine and Metabolic Diseases, Shanghai Clinical Center for Endocrine and Metabolic Diseases, Shanghai, China
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