1
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He D, Jiao Y, Xu J, Luo J, Cui Y, Han X, Zhao H. mmu-miR-185 regulates osteoclasts differentiation and migration by targeting Btk. J Gene Med 2024; 26:e3687. [PMID: 38690623 DOI: 10.1002/jgm.3687] [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: 03/05/2023] [Revised: 02/29/2024] [Accepted: 03/28/2024] [Indexed: 05/02/2024] Open
Abstract
BACKGROUND Bones undergo a constant remodeling, a process involving osteoclast-mediated bone resorption and osteoblast-mediated bone formation, crucial for maintaining healthy bone mass. We previously observed that miR-185 depletion may promote bone formation by regulating Bgn expression and the BMP/Smad signaling pathway. However, the effects of miR-185-5p on the osteoclasts and bone remodeling have not been elucidated, warranting further exploration. METHODS Tartrate-resistant acid phosphatase staining was utilized to assess the differentiation ability of bone marrow mononuclear macrophages (BMMs) from mmu-miR-185 gene knockout (KO) mice and wild-type (WT) mice. A reverse transcriptase-quantitative PCR was conducted to compare differences in miR-185-5p and osteoclast marker molecules, including Trap, Dcstamp, Ctsk and Nfatc1, between the KO group and WT group BMMs. Western blot analysis was employed to observe the expression of osteoclast marker molecules. A cell-counting kit-8 was used to analyze cell proliferation ability. Transwell experiments were conducted to detect cell migration. Dual-luciferase reporter assays were employed to confirm whether Btk is a downstream target gene of miR-185-5p. RESULTS miR-185 depletion promoted osteoclast differentiation in bone marrow-derived monocytes/macrophages. Overexpression of miR-185-5p in RAW264.7 cells inhibited differentiation and migration of osteoclasts. Furthermore, Btk was identified as a downstream target gene of miR-185-5p, suggesting that miR-185-5p may inhibit osteoclast differentiation and migration by targeting Btk. CONCLUSIONS miR-185 regulates osteoclasts differentiation, with overexpression of miR-185-5p inhibiting osteoclast differentiation and migration in vitro. Additionally, miR-185-5p may modulate osteoclastic differentiation and migration by regulating Btk expression.
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Affiliation(s)
- Dan He
- Department of Medical Genetics, Peking University School of Basic Medical Sciences, Beijing, China
| | - Yueying Jiao
- Department of Medical Genetics, Peking University School of Basic Medical Sciences, Beijing, China
| | - Jian Xu
- Department of Anatomy, Histology and Embryology, Peking University School of Basic Medical Sciences, Beijing, China
| | - Junjie Luo
- Department of Medical Genetics, Peking University School of Basic Medical Sciences, Beijing, China
| | - Yaqi Cui
- Department of Medical Genetics, Peking University School of Basic Medical Sciences, Beijing, China
| | - Xiabing Han
- Department of Medical Genetics, Peking University School of Basic Medical Sciences, Beijing, China
| | - Hongshan Zhao
- Department of Medical Genetics, Peking University School of Basic Medical Sciences, Beijing, China
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2
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Huang J, Ma Z, Peng X, Yang Z, Wu Y, Zhong G, Ouyang T, Chen Z, Liu Y, Wang Q, Chen J, Chen T, Zeng Z. Discovery of Novel Potent and Fast BTK PROTACs for the Treatment of Osteoclasts-Related Inflammatory Diseases. J Med Chem 2024; 67:2438-2465. [PMID: 38321747 DOI: 10.1021/acs.jmedchem.3c01414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2024]
Abstract
Bruton's tyrosine kinase (BTK) is an attractive target in inflammatory and autoimmune diseases. However, the effectiveness of BTK inhibitors is limited by side effects and drug resistance. In this study, we report the development of novel BTK proteolysis targeting chimeras (PROTACs) with different classes of BTK-targeting ligands (e.g., spebrutinib) other than ibrutinib. Compound 23 was identified as a potent and fast BTK PROTAC degrader, exhibiting outstanding degradation potency and efficiency in Mino cells (DC50, 4 h = 1.29 ± 0.3 nM, t1/2, 20 nM = 0.59 ± 0.20 h). Furthermore, compound 23 forms a stable ternary complex, as confirmed by the HTRF assay. Notably, 23 down-regulated the BTK-PLCγ2-Ca2+-NFATc1 signaling pathway activated by RANKL, thus inhibiting osteoclastogenesis and attenuating alveolar bone resorption in a mouse periodontitis model. These findings suggest that compound 23 is a potent and promising candidate for osteoclast-related inflammatory diseases, expanding the potential of BTK PROTACs.
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Affiliation(s)
- Junli Huang
- Department of Pharmacy, The People's Hospital of Guangxi Zhuang Autonomous Region & Guangxi Academy of Medical Sciences, Nanning, Guangxi 530021, China
| | - Zeli Ma
- Department of Stomatology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Xiaopeng Peng
- Key Laboratory of Prevention and Treatment of Cardiovascular and Cerebrovascular Diseases, Ministry of Education, Jiangxi Province Key Laboratory of Biomaterials and Biofabrication for Tissue Engineering, School of Pharmacy, Gannan Medical University, Ganzhou 314000, China
| | - Zichao Yang
- Guangdong Provincial Key Laboratory of New Drug Screening, NMPA Key Laboratory for Research and Evaluation of Drug Metabolism, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Yuhao Wu
- Department of Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, China
| | - Guanghong Zhong
- Guangdong Provincial Key Laboratory of New Drug Screening, NMPA Key Laboratory for Research and Evaluation of Drug Metabolism, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Tianfeng Ouyang
- Guangdong Provincial Key Laboratory of New Drug Screening, NMPA Key Laboratory for Research and Evaluation of Drug Metabolism, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Zhen Chen
- Guangdong Provincial Key Laboratory of New Drug Screening, NMPA Key Laboratory for Research and Evaluation of Drug Metabolism, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Yao Liu
- Instrumental Analysis Center, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, China
| | - Qirui Wang
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou 510515, China
| | - Jianjun Chen
- Guangdong Provincial Key Laboratory of New Drug Screening, NMPA Key Laboratory for Research and Evaluation of Drug Metabolism, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Ting Chen
- Department of Stomatology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Zhenhua Zeng
- Department of Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, China
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3
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Zheng H, Liu Y, Deng Y, Li Y, Liu S, Yang Y, Qiu Y, Li B, Sheng W, Liu J, Peng C, Wang W, Yu H. Recent advances of NFATc1 in rheumatoid arthritis-related bone destruction: mechanisms and potential therapeutic targets. Mol Med 2024; 30:20. [PMID: 38310228 PMCID: PMC10838448 DOI: 10.1186/s10020-024-00788-w] [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: 12/07/2023] [Accepted: 01/22/2024] [Indexed: 02/05/2024] Open
Abstract
Rheumatoid arthritis (RA) is a chronic autoimmune inflammatory disease characterized by inflammation of the synovial tissue and joint bone destruction, often leading to significant disability. The main pathological manifestation of joint deformity in RA patients is bone destruction, which occurs due to the differentiation and proliferation of osteoclasts. The transcription factor nuclear factor-activated T cell 1 (NFATc1) plays a crucial role in this process. The regulation of NFATc1 in osteoclast differentiation is influenced by three main factors. Firstly, NFATc1 is activated through the upstream nuclear factor kappa-B ligand (RANKL)/RANK signaling pathway. Secondly, the Ca2+-related co-stimulatory signaling pathway amplifies NFATc1 activity. Finally, negative regulation of NFATc1 occurs through the action of cytokines such as B-cell Lymphoma 6 (Bcl-6), interferon regulatory factor 8 (IRF8), MAF basic leucine zipper transcription factor B (MafB), and LIM homeobox 2 (Lhx2). These three phases collectively govern NFATc1 transcription and subsequently affect the expression of downstream target genes including TRAF6 and NF-κB. Ultimately, this intricate regulatory network mediates osteoclast differentiation, fusion, and the degradation of both organic and inorganic components of the bone matrix. This review provides a comprehensive summary of recent advances in understanding the mechanism of NFATc1 in the context of RA-related bone destruction and discusses potential therapeutic agents that target NFATc1, with the aim of offering valuable insights for future research in the field of RA. To assess their potential as therapeutic agents for RA, we conducted a drug-like analysis of potential drugs with precise structures.
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Affiliation(s)
- Hao Zheng
- TCM and Ethnomedicine Innovation & Development International Laboratory, School of Pharmacy, Innovative Materia Medica Research Institute, Hunan University of Chinese Medicine, Changsha, 410208, China
| | - Yuexuan Liu
- TCM and Ethnomedicine Innovation & Development International Laboratory, School of Pharmacy, Innovative Materia Medica Research Institute, Hunan University of Chinese Medicine, Changsha, 410208, China
| | - Yasi Deng
- TCM and Ethnomedicine Innovation & Development International Laboratory, School of Pharmacy, Innovative Materia Medica Research Institute, Hunan University of Chinese Medicine, Changsha, 410208, China
| | - Yunzhe Li
- TCM and Ethnomedicine Innovation & Development International Laboratory, School of Pharmacy, Innovative Materia Medica Research Institute, Hunan University of Chinese Medicine, Changsha, 410208, China
| | - Shiqi Liu
- TCM and Ethnomedicine Innovation & Development International Laboratory, School of Pharmacy, Innovative Materia Medica Research Institute, Hunan University of Chinese Medicine, Changsha, 410208, China
| | - Yong Yang
- TCM and Ethnomedicine Innovation & Development International Laboratory, School of Pharmacy, Innovative Materia Medica Research Institute, Hunan University of Chinese Medicine, Changsha, 410208, China
| | - Yun Qiu
- TCM and Ethnomedicine Innovation & Development International Laboratory, School of Pharmacy, Innovative Materia Medica Research Institute, Hunan University of Chinese Medicine, Changsha, 410208, China
| | - Bin Li
- TCM and Ethnomedicine Innovation & Development International Laboratory, School of Pharmacy, Innovative Materia Medica Research Institute, Hunan University of Chinese Medicine, Changsha, 410208, China
| | - Wenbing Sheng
- TCM and Ethnomedicine Innovation & Development International Laboratory, School of Pharmacy, Innovative Materia Medica Research Institute, Hunan University of Chinese Medicine, Changsha, 410208, China
| | - Jinzhi Liu
- TCM and Ethnomedicine Innovation & Development International Laboratory, School of Pharmacy, Innovative Materia Medica Research Institute, Hunan University of Chinese Medicine, Changsha, 410208, China
| | - Caiyun Peng
- TCM and Ethnomedicine Innovation & Development International Laboratory, School of Pharmacy, Innovative Materia Medica Research Institute, Hunan University of Chinese Medicine, Changsha, 410208, China
| | - Wei Wang
- TCM and Ethnomedicine Innovation & Development International Laboratory, School of Pharmacy, Innovative Materia Medica Research Institute, Hunan University of Chinese Medicine, Changsha, 410208, China.
| | - Huanghe Yu
- TCM and Ethnomedicine Innovation & Development International Laboratory, School of Pharmacy, Innovative Materia Medica Research Institute, Hunan University of Chinese Medicine, Changsha, 410208, China.
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4
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Chen Y, Gan W, Cheng Z, Zhang A, Shi P, Zhang Y. Plant molecules reinforce bone repair: Novel insights into phenol-modified bone tissue engineering scaffolds for the treatment of bone defects. Mater Today Bio 2024; 24:100920. [PMID: 38226013 PMCID: PMC10788623 DOI: 10.1016/j.mtbio.2023.100920] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Revised: 12/11/2023] [Accepted: 12/15/2023] [Indexed: 01/17/2024] Open
Abstract
Bone defects have become a major cause of disability and death. To overcome the limitations of natural bone implants, including donor shortages and immune rejection risks, bone tissue engineering (BTE) scaffolds have emerged as a promising therapy for bone defects. Despite possessing good biocompatibility, these metal, ceramic and polymer-based scaffolds are still challenged by the harsh conditions in bone defect sites. ROS accumulation, bacterial infection, excessive inflammation, compromised blood supply deficiency and tumor recurrence negatively impact bone tissue cells (BTCs) and hinder the osteointegration of BTE scaffolds. Phenolic compounds, derived from plants and fruits, have gained growing application in treating inflammatory, infectious and aging-related diseases due to their antioxidant ability conferred by phenolic hydroxyl groups. The prevalent interactions between phenols and functional groups also facilitate their utilization in fabricating scaffolds. Consequently, phenols are increasingly incorporated into BTE scaffolds to boost therapeutic efficacy in bone defect. This review demonstrated the effects of phenols on BTCs and bone defect microenvironment, summarized the intrinsic mechanisms, presented the advances in phenol-modified BTE scaffolds and analyzed their potential risks in practical applications. Overall, phenol-modified BTE scaffolds hold great potential for repairing bone defects, offering novel patterns for BTE scaffold construction and advancing traumatological medicine.
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Affiliation(s)
| | | | | | - Anran Zhang
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Pengzhi Shi
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Yukun Zhang
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
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5
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Liang H, Huang Q, Zou L, Wei P, Lu J, Zhang Y. Methyl gallate: Review of pharmacological activity. Pharmacol Res 2023; 194:106849. [PMID: 37429335 DOI: 10.1016/j.phrs.2023.106849] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Accepted: 07/07/2023] [Indexed: 07/12/2023]
Abstract
Methyl gallate (MG) is a polyphenolic compound widely found in natural plants. MG has been shown to have a variety of biological functions, including anti-tumor, anti-inflammatory, anti-oxidant, neuroprotective, hepatoprotective and anti-microbial activities, and has broad research and development prospects. A total of 88 articles related to MG were searched using the PubMed, Science Direct, and Google Scholar databases, systematically investigating the pharmacological activity and molecular mechanisms of MG. There were no restrictions on the publication years, and the last search was conducted on June 5, 2023. MG can exert pharmacological effects through multiple pathways and targets, such as PI3K/Akt, ERK1/2, Caspase, AMPK/NF-κB, Wnt/β-catenin, TLR4/NF-κB, MAPK, p53, NLRP3, ROS, EMT. According to the literature, MG has the potential to be a prospective adjuvant for anticancer therapy and deserves further study.
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Affiliation(s)
- Huaguo Liang
- School of Basic Medical Sciences, Guangdong Pharmaceutical University, Guangzhou 510006, PR China
| | - Qingsong Huang
- School of Basic Medical Sciences, Guangdong Pharmaceutical University, Guangzhou 510006, PR China
| | - Li Zou
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, PR China
| | - Peng Wei
- School of Basic Medical Sciences, Guangdong Pharmaceutical University, Guangzhou 510006, PR China
| | - Jiazheng Lu
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, PR China
| | - Yongli Zhang
- School of Basic Medical Sciences, Guangdong Pharmaceutical University, Guangzhou 510006, PR China.
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6
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Silva RTC, Guidotti-Takeuchi M, Peixoto JLM, Demarqui FM, Mori AP, Dumont CF, Ferreira GRA, Pereira GDM, Rossi DA, Corbi PP, Pavan FR, Rezende Júnior CDO, Melo RTD, Guerra W. New Palladium(II) Complexes Containing Methyl Gallate and Octyl Gallate: Effect against Mycobacterium tuberculosis and Campylobacter jejuni. Molecules 2023; 28:molecules28093887. [PMID: 37175297 PMCID: PMC10179749 DOI: 10.3390/molecules28093887] [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: 02/15/2023] [Revised: 03/03/2023] [Accepted: 03/08/2023] [Indexed: 05/15/2023] Open
Abstract
This work describes the preparation, characterization and antimicrobial activity of four palladium(II) complexes, namely, [Pd(meg)(1,10-phen)] 1, [Pd(meg)(PPh3)2] 2, [Pd(og)(1,10-phen)] 3 and [Pd(og)(PPh3)2] 4, where meg = methyl gallate, og = octyl gallate, 1,10-phen = 1,10-phenanthroline and PPh3 = triphenylphosphine. As to the chemical structures, spectral and physicochemical studies of 1-4 indicated that methyl or octyl gallate coordinates a palladium(II) ion through two oxygen atoms upon deprotonation. A chelating bidentate phenanthroline or two triphenylphosphine molecules complete the coordination sphere of palladium(II) ion, depending on the complex. The metal complexes were tested against the Mycobacterium tuberculosis H37Rv strain and 2 exhibited high activity (MIC = 3.28 μg/mL). As to the tests with Campylobacter jejuni, complex 1 showed a significant effect in reducing bacterial population (greater than 7 log CFU) in planktonic forms, as well as in the biomass intensity (IBF: 0.87) when compared to peracetic acid (IBF: 1.11) at a concentration of 400 μg/mL. The effect provided by these complexes has specificity according to the target microorganism and represent a promising alternative for the control of microorganisms of public health importance.
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Affiliation(s)
| | - Micaela Guidotti-Takeuchi
- Laboratory of Experimental Molecular Epidemiology, Federal University of Uberlândia-UFU, Umuarama Campus, Uberlândia 87504-000, MG, Brazil
| | - Jéssica Laura Miranda Peixoto
- Laboratory of Experimental Molecular Epidemiology, Federal University of Uberlândia-UFU, Umuarama Campus, Uberlândia 87504-000, MG, Brazil
| | - Fernanda Manaia Demarqui
- Faculty of Pharmaceutical Sciences, Paulista State University-UNESP, Araraquara Campus, Araraquara 14800-060, SP, Brazil
| | - Ananda Paula Mori
- Institute of Chemistry, Federal University of Uberlândia-UFU, Santa Mônica Campus, Uberlândia 38402-018, MG, Brazil
| | - Carolyne Ferreira Dumont
- Laboratory of Experimental Molecular Epidemiology, Federal University of Uberlândia-UFU, Umuarama Campus, Uberlândia 87504-000, MG, Brazil
| | | | | | - Daise Aparecida Rossi
- Laboratory of Experimental Molecular Epidemiology, Federal University of Uberlândia-UFU, Umuarama Campus, Uberlândia 87504-000, MG, Brazil
| | - Pedro Paulo Corbi
- Institute of Chemistry, State University of Campinas-UNICAMP, Campinas 13083-872, SP, Brazil
| | - Fernando Rogério Pavan
- Faculty of Pharmaceutical Sciences, Paulista State University-UNESP, Araraquara Campus, Araraquara 14800-060, SP, Brazil
| | | | - Roberta Torres de Melo
- Laboratory of Experimental Molecular Epidemiology, Federal University of Uberlândia-UFU, Umuarama Campus, Uberlândia 87504-000, MG, Brazil
| | - Wendell Guerra
- Institute of Chemistry, Federal University of Uberlândia-UFU, Santa Mônica Campus, Uberlândia 38402-018, MG, Brazil
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7
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Kaparekar PS, Anandasadagopan SK. In vitro and in vivo effect of novel GA-CSNPs loaded col-fibrin nanocomposite scaffold on diabetic wound healing. J Biomed Mater Res B Appl Biomater 2023; 111:1074-1088. [PMID: 36583262 DOI: 10.1002/jbm.b.35215] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Revised: 11/16/2022] [Accepted: 12/08/2022] [Indexed: 12/31/2022]
Abstract
A non-healing wound is a common problem associated with diabetes mellitus. Chronic inflammation, challenging re-epithelization, unusual growth factors, and impaired angiogenesis are the multifactorial events that contribute to impaired wounds. Hence, in the present work, an innovative GA-CSNPs nanocomposite scaffold has been fabricated by integrating Gallic acid (GA) loaded chitosan nanoparticles (GA-CSNPs) into a genipin crosslinked collagen-fibrin (Col-fibrin) scaffold as wound dressing material. The in vitro RT-PCR study carried out using NIH/3T3 mouse fibroblast cells showed that treatment with GA-CSNPs nanocomposite scaffold aids in an upsurge in the expression of Col-I, III, and VEGF, which further supports the synthesis of extracellular matrix, increases neovascularization and development of the established vascular system. In vivo wound contraction study results revealed that diabetic wounds treated with GA-CSNPs nanocomposite scaffold show a faster rate of wound closure (p < .001), histopathology results showed accelerated fibroblast cell migration, reduction of the inflammatory cells, enhanced collagen along with hexosamine synthesis. In addition, immunohistochemistry results showed increased vascularization, a significant decrease in macrophage recruitment, and reduced expression of MMP-9 compared to the Col-fibrin scaffold and Control groups. Overall data suggest that the fabricated GA-CSNPs nanocomposite porous 3-D scaffold can be a hopeful therapeutic choice for diabetic wound management.
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Affiliation(s)
- Pallavi Shyam Kaparekar
- Biochemistry and Biotechnology Laboratory, Central Leather Research Institute, Council of Scientific and Industrial Research (CSIR), Chennai, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - Suresh Kumar Anandasadagopan
- Biochemistry and Biotechnology Laboratory, Central Leather Research Institute, Council of Scientific and Industrial Research (CSIR), Chennai, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
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8
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Bott KN, Feldman E, de Souza RJ, Comelli EM, Klentrou P, Peters SJ, Ward WE. Lipopolysaccharide-Induced Bone Loss in Rodent Models: A Systematic Review and Meta-Analysis. J Bone Miner Res 2023; 38:198-213. [PMID: 36401814 PMCID: PMC10107812 DOI: 10.1002/jbmr.4740] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Revised: 10/27/2022] [Accepted: 11/03/2022] [Indexed: 11/21/2022]
Abstract
Osteoporosis has traditionally been characterized by underlying endocrine mechanisms, though evidence indicates a role of inflammation in its pathophysiology. Lipopolysaccharide (LPS), a component of gram-negative bacteria that reside in the intestines, can be released into circulation and stimulate the immune system, upregulating bone resorption. Exogenous LPS is used in rodent models to study the effect of systemic inflammation on bone, and to date a variety of different doses, routes, and durations of LPS administration have been used. The study objective was to determine whether systemic administration of LPS induced inflammatory bone loss in rodent models. A systematic search of Medline and four other databases resulted in a total of 110 studies that met the inclusion criteria. Pooled standardized mean differences (SMDs) and corresponding 95% confidence intervals (CI) with a random-effects meta-analyses were used for bone volume fraction (BV/TV) and volumetric bone mineral density (vBMD). Heterogeneity was quantified using the I2 statistic. Shorter-term (<2 weeks) and longer-term (>2 weeks) LPS interventions were analyzed separately because of intractable study design differences. BV/TV was significantly reduced in both shorter-term (SMD = -3.79%, 95% CI [-4.20, -3.38], I2 62%; p < 0.01) and longer-term (SMD = -1.50%, 95% CI [-2.00, -1.00], I2 78%; p < 0.01) studies. vBMD was also reduced in both shorter-term (SMD = -3.11%, 95% CI [-3.78, -2.44]; I2 72%; p < 0.01) and longer-term (SMD = -3.49%, 95% CI [-4.94, -2.04], I2 82%; p < 0.01) studies. In both groups, regardless of duration, LPS negatively impacted trabecular bone structure but not cortical bone structure, and an upregulation in bone resorption demonstrated by bone cell staining and serum biomarkers was reported. This suggests systemically delivered exogenous LPS in rodents is a viable model for studying inflammatory bone loss, particularly in trabecular bone. © 2022 The Authors. Journal of Bone and Mineral Research published by Wiley Periodicals LLC on behalf of American Society for Bone and Mineral Research (ASBMR).
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Affiliation(s)
- Kirsten N Bott
- Department of Kinesiology, Brock University, St. Catharines, ON, Canada.,Centre for Bone and Muscle Health, Brock University, St. Catharines, ON, Canada
| | - Evelyn Feldman
- Lakehead University Library, Lakehead University, Thunder Bay, ON, Canada
| | - Russell J de Souza
- Department of Health Research Methods, Evidence, and Impact, Faculty of Health Sciences, McMaster University, Hamilton, ON, Canada.,Population Health Research Institute, Hamilton Health Sciences Corporation, Hamilton, ON, Canada
| | - Elena M Comelli
- Department of Kinesiology, Brock University, St. Catharines, ON, Canada.,Department of Nutritional Sciences, University of Toronto, Toronto, ON, Canada.,Joannah and Brian Lawson Centre for Child Nutrition, University of Toronto, Toronto, ON, Canada
| | - Panagiota Klentrou
- Department of Kinesiology, Brock University, St. Catharines, ON, Canada.,Centre for Bone and Muscle Health, Brock University, St. Catharines, ON, Canada
| | - Sandra J Peters
- Department of Kinesiology, Brock University, St. Catharines, ON, Canada.,Centre for Bone and Muscle Health, Brock University, St. Catharines, ON, Canada
| | - Wendy E Ward
- Department of Kinesiology, Brock University, St. Catharines, ON, Canada.,Centre for Bone and Muscle Health, Brock University, St. Catharines, ON, Canada.,Department of Nutritional Sciences, University of Toronto, Toronto, ON, Canada.,Department of Health Sciences, Brock University, St. Catharines, ON, Canada
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9
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Natesan K, Srivalli T, Mohan H, Jayaprakash A, Ramalingam V. UPLC-ESI-Q-TOF-MS E-based metabolomics analysis of Acer mono sap and evaluation of osteogenic activity in mouse osteoblast cells. Food Funct 2022; 13:13002-13013. [PMID: 36449013 DOI: 10.1039/d2fo01948e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Investigation of phytochemicals and bioactive molecules is tremendously vital for the applications of new plant resources in chemistry, food, and medicine. In this study, the chemical profiling of sap of Acer mono (SAM), a Korean syrup known for its anti-osteoporosis effect, was performed using UPLC-ESI-Q-TOF-MSE analysis. A total of 23 compounds were identified based on the mass and fragmentation characteristics and most of the compounds have significant biomedical applications. The in vitro antioxidant assessment of SAM indicated excellent activity by scavenging DPPH and ABTS-free radicals and were found to be 23.35 mg mL-1 and 29.33 mg mL-1, respectively, as IC50 concentrations. As well, the in vitro proliferation effect of the SAM was assessed against mouse MC3T3-E1 cells, and the results showed that the SAM enhanced the proliferation of the cells, and 12.5 mg mL-1 and 25 mg mL-1 of SAM were selected for osteogenic differentiation. The morphological analysis clearly evidenced the SAM enhanced the osteogenic activity in MC3T3-E1 cells by the increased deposition of extracellular calcium and nodule formation. Moreover, the qRT-PCR analysis confirmed the increased expression of osteoblast marker gene expression including ALP, osteocalcin, osteopontin, collagen1α1, Runx2, and osterix in SAM-treated MC3T3-E1 cells. Together, these results suggest that SAM possesses osteogenic effects and can be used for bone regeneration and bone loss-associated diseases such as osteoporosis.
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Affiliation(s)
- Karthi Natesan
- School of Allied Health Sciences, REVA University, Bengaluru, India
| | - Thimmarayan Srivalli
- PG and Research Department of Biochemistry, Scared Heart College (Autonomous), Tirupattur - 635601, Tamil Nadu, India (Affiliated to Thiruvalluvar University, Serkkadu, Vellore - 632115, Tamil Nadu, India)
| | - Harshavardhan Mohan
- Department of Chemistry, Research Institute of Physics and Chemistry, Jeonbuk National University, Jeonju 54896, Republic of Korea
| | - Arul Jayaprakash
- PG and Research Department of Biochemistry, Scared Heart College (Autonomous), Tirupattur - 635601, Tamil Nadu, India (Affiliated to Thiruvalluvar University, Serkkadu, Vellore - 632115, Tamil Nadu, India)
| | - Vaikundamoorthy Ramalingam
- Centre for Natural Products & Traditional Knowledge, CSIR-Indian Institute of Chemical Technology, Hyderabad, India. .,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad - 201002, India
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10
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Ryu BI, Kim KT. Antioxidant activity and protective effect of methyl gallate against t-BHP induced oxidative stress through inhibiting ROS production. Food Sci Biotechnol 2022; 31:1063-1072. [DOI: 10.1007/s10068-022-01120-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Revised: 05/29/2022] [Accepted: 06/09/2022] [Indexed: 11/04/2022] Open
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11
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Correa LB, Pádua TA, Alabarse PVG, Saraiva EM, Garcia EB, Amendoeira FC, Ferraris FK, Fukada SY, Rosas EC, Henriques MG. Protective effect of methyl gallate on murine antigen-induced arthritis by inhibiting inflammatory process and bone erosion. Inflammopharmacology 2022; 30:251-266. [PMID: 35112275 DOI: 10.1007/s10787-021-00922-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Accepted: 12/28/2021] [Indexed: 12/15/2022]
Abstract
Methyl gallate (MG) is a plant-derived phenolic compound known to present remarkable anti-inflammatory effect in different experimental models, such as paw oedema, pleurisy, zymosan-induced arthritis and colitis. Herein we investigated the effect of MG in the mice model of antigen-induced arthritis (AIA), a model with complex inflammatory response, driven primally by immune process and that cause bone and cartilage erosion similarly found in rheumatoid arthritis. Arthritis was induced by intra-articular injection of albumin methylated from bovine serum (mBSA) in C57BL/6 male mice previously immunized. The dose-response analysis of MG (0.7-70 mg/kg; p.o) showed that maximum inhibition was reached with the dose of 7 mg/kg on paw oedema and cell infiltration induced by AIA at 7 h. Treatment with MG (7 mg/kg; p.o) or with the positive control, dexamethasone (Dexa, 10 mg/kg, ip) reduced AIA oedema formation, leukocyte infiltration, release of extracellular DNA and cytokine production 7 and 24 h (acute response). Mice treated daily with MG for 7 days showed no significant weight loss or liver and kidney toxicity contrary to dexamethasone that induced some degree of toxicity. Prolonged treatment with MG inhibited the late inflammatory response (28 days) reducing oedema formation, cell infiltration, synovial hyperplasia, pannus formation and cartilage degradation as observed in histopathological analyses. Ultimately, MG reduced bone resorption as evidenced by a decrease in tartrate-resistant acid phosphate (TRAP)-positive cells number in femur histology. Altogether, we demonstrate that MG ameliorates the inflammatory reaction driven primarily by the immune process, suggesting a potential therapeutic application in arthritis treatment.
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Affiliation(s)
- Luana Barbosa Correa
- Laboratory of Applied Pharmacology, Farmanguinhos, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil.,National Institute for Science and Technology on Innovation on Diseases of Neglected Populations (INCT/IDPN), Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
| | - Tatiana Almeida Pádua
- Laboratory of Applied Pharmacology, Farmanguinhos, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil.,National Institute for Science and Technology on Innovation on Diseases of Neglected Populations (INCT/IDPN), Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
| | - Paulo Vinicius Gil Alabarse
- Department of Biomolecular Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Elvira Maria Saraiva
- Laboratory of Immunobiology of Leishmaniasis, Department of Immunology, Institute of Microbiology Paulo de Góes, Federal University of Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Esdras Barbosa Garcia
- Laboratory of Pharmacology, Department of Pharmacology and Toxicology, National Institute of Health Quality Control (INCQS), Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
| | - Fabio Coelho Amendoeira
- Laboratory of Pharmacology, Department of Pharmacology and Toxicology, National Institute of Health Quality Control (INCQS), Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
| | - Fausto Klabund Ferraris
- Laboratory of Pharmacology, Department of Pharmacology and Toxicology, National Institute of Health Quality Control (INCQS), Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
| | - Sandra Yasuyo Fukada
- Department of Biomolecular Sciences, School of Pharmaceutical Sciences of Ribeirão Preto, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Elaine Cruz Rosas
- Laboratory of Applied Pharmacology, Farmanguinhos, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil.,National Institute for Science and Technology on Innovation on Diseases of Neglected Populations (INCT/IDPN), Oswaldo Cruz Foundation, Rio de Janeiro, Brazil
| | - Maria G Henriques
- Laboratory of Applied Pharmacology, Farmanguinhos, Oswaldo Cruz Foundation, Rio de Janeiro, Brazil. .,National Institute for Science and Technology on Innovation on Diseases of Neglected Populations (INCT/IDPN), Oswaldo Cruz Foundation, Rio de Janeiro, Brazil.
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12
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Ma Y, Ran D, Zhao H, Shi X, Song R, Zou H, Liu Z. The effect of P2X7R- mediated Ca 2+ and MAPK signaling in OPG-induced duck embryo osteoclasts differentiation and adhesive structure damage. Life Sci 2022; 293:120337. [PMID: 35074408 DOI: 10.1016/j.lfs.2022.120337] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Revised: 01/10/2022] [Accepted: 01/15/2022] [Indexed: 10/19/2022]
Abstract
Various factors cause animal bone malnutrition disease during intensive culture. Osteoclasts play an important role in regulating bone metabolism disease. Osteoprotegerin (OPG) modulates osteoclast function; however, the mechanism underlying this effect is unknown. Therefore, the present study aimed to explore whether OPG affects duck embryo osteoclast function via purinergic receptor P2X7. OPG significantly inhibited duck embryo osteoclast differentiation and bone resorption, and suppressed F-actin formation. In addition, OPG remarkably impaired duck embryo osteoclasts' adhesive structure. After OPG treatment, the expression of P2X7R significantly reduced, the ATP level and Ca2+-ATPase activity decreased rapidly, and concomitantly suppressed calcium and MAPK signaling. A438079 (a selective P2X7R inhibitor) significantly inhibited duck embryo osteoclast differentiation and bone resorption, and the phosphorylation of Ca2+ regulated proteins (CAM, CAMKII, CAMKIV) and MAPKs (ERK, JNK, and P38) were markedly suppressed. Pretreatment of duck embryo osteoclasts with BzATP, a P2X7R agonist, activated Ca2+ and MAPK signaling. BzATP alleviated OPG-induced duck embryo osteoclast differentiation and adhesive structure damage, and recovered the distribution of adhesion-related proteins in mature duck embryo osteoclasts. Thus, P2RX7-mediated Ca2+ and MAPK signaling has a key function in OPG-induced duck embryo osteoclast differentiation and adhesive structure damage. P2X7R might be an ideal target to treat bone diseases through regulating bone cell activation.
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Affiliation(s)
- Yonggang Ma
- College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu 225009, PR China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, Jiangsu 225009, PR China; Joint International Research Laboratory of Agriculture and Agri-Product Safety of the Ministry of Education of China, Yangzhou University, Yangzhou, Jiangsu 225009, PR China
| | - Di Ran
- College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu 225009, PR China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, Jiangsu 225009, PR China; Joint International Research Laboratory of Agriculture and Agri-Product Safety of the Ministry of Education of China, Yangzhou University, Yangzhou, Jiangsu 225009, PR China
| | - Hongyan Zhao
- College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu 225009, PR China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, Jiangsu 225009, PR China; Joint International Research Laboratory of Agriculture and Agri-Product Safety of the Ministry of Education of China, Yangzhou University, Yangzhou, Jiangsu 225009, PR China
| | - Xueni Shi
- College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu 225009, PR China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, Jiangsu 225009, PR China; Joint International Research Laboratory of Agriculture and Agri-Product Safety of the Ministry of Education of China, Yangzhou University, Yangzhou, Jiangsu 225009, PR China
| | - Ruilong Song
- College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu 225009, PR China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, Jiangsu 225009, PR China; Joint International Research Laboratory of Agriculture and Agri-Product Safety of the Ministry of Education of China, Yangzhou University, Yangzhou, Jiangsu 225009, PR China
| | - Hui Zou
- College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu 225009, PR China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, Jiangsu 225009, PR China; Joint International Research Laboratory of Agriculture and Agri-Product Safety of the Ministry of Education of China, Yangzhou University, Yangzhou, Jiangsu 225009, PR China
| | - Zongping Liu
- College of Veterinary Medicine, Yangzhou University, Yangzhou, Jiangsu 225009, PR China; Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou, Jiangsu 225009, PR China; Joint International Research Laboratory of Agriculture and Agri-Product Safety of the Ministry of Education of China, Yangzhou University, Yangzhou, Jiangsu 225009, PR China.
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13
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Liu C, He Y, Xu X, He B. Phospholipase Cγ Signaling in Bone Marrow Stem Cell and Relevant Natural Compounds Therapy. Curr Stem Cell Res Ther 2021; 15:579-587. [PMID: 31702518 DOI: 10.2174/1574888x14666191107103755] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Revised: 06/18/2019] [Accepted: 08/08/2019] [Indexed: 01/07/2023]
Abstract
Excessive bone resorption has been recognized play a major role in the development of bone-related diseases such as osteoporosis, rheumatoid arthritis, Paget's disease of bone, and cancer. Phospholipase Cγ (PLCγ) family members PLCγ1 and PLCγ2 are critical regulators of signaling pathways downstream of growth factor receptors, integrins, and immune complexes and play a crucial role in osteoclast. Ca2+ signaling has been recognized as an essential pathway to the differentiation of osteoclasts. With growing attention and research about natural occurring compounds, the therapeutic use of natural active plant-derived products has been widely recognized in recent years. In this review, we summarized the recent research on PLCγ signaling in bone marrow stem cells and the use of several natural compounds that were proven to inhibit RANKL-mediated osteoclastogenesis via modulating PLCγ signaling pathways.
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Affiliation(s)
- Chang Liu
- Department of Spine Surgery, Honghui Hospital Affiliated to Xi'an Jiaotong University, Xi'an, China.,Shaanxi University of Chinese Medicine, Xian Yang, China
| | - Yuan He
- Department of Orthopedics, Fifth Hospital of Xi’an, Xi’an, China
| | - Xiaobing Xu
- Department of Neurosurgery, Shunde Hospital of Southern Medical University, Fo Shan, China
| | - Baorong He
- Department of Spine Surgery, Honghui Hospital Affiliated to Xi'an Jiaotong University, Xi'an, China
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Bellavia D, Caradonna F, Dimarco E, Costa V, Carina V, De Luca A, Raimondi L, Fini M, Gentile C, Giavaresi G. Non-flavonoid polyphenols in osteoporosis: preclinical evidence. Trends Endocrinol Metab 2021; 32:515-529. [PMID: 33895073 DOI: 10.1016/j.tem.2021.03.008] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Revised: 03/22/2021] [Accepted: 03/22/2021] [Indexed: 12/13/2022]
Abstract
The development of progressive osteopenia and osteoporosis (OP) is due to the imbalance between bone resorption and bone formation, determining a lower bone resistance, major risks of fractures, with consequent pain and functional limitations. Flavonoids, a class of polyphenols, have been extensively studied for their therapeutic activities against bone resorption, but less attention has been given to a whole series of molecules belonging to the polyphenolic compounds. However, these classes have begun to be studied for the treatment of OP. In this systematic review, comprehensive information is provided on non-flavonoid polyphenolic compounds, and we highlight pathways implicated in the action of these molecules that act often epigenetically, and their possible use for OP treatment and prevention.
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Affiliation(s)
- Daniele Bellavia
- IRCCS Istituto Ortopedico Rizzoli, SC Scienze e Tecnologie Chirurgiche - SS Piattaforma Scienze Omiche per Ortopedia Personalizzata, Bologna, Italy.
| | - Fabio Caradonna
- University of Palermo, Department of Biological, Chemical, and Pharmaceutical Sciences and Technologies (STEBICEF), Section of Cellular Biology, Palermo, Italy
| | - Eufrosina Dimarco
- University of Palermo, Department of Biological, Chemical, and Pharmaceutical Sciences and Technologies (STEBICEF), Section of Cellular Biology, Palermo, Italy
| | - Viviana Costa
- IRCCS Istituto Ortopedico Rizzoli, SC Scienze e Tecnologie Chirurgiche - SS Piattaforma Scienze Omiche per Ortopedia Personalizzata, Bologna, Italy
| | - Valeria Carina
- IRCCS Istituto Ortopedico Rizzoli, SC Scienze e Tecnologie Chirurgiche - SS Piattaforma Scienze Omiche per Ortopedia Personalizzata, Bologna, Italy
| | - Angela De Luca
- IRCCS Istituto Ortopedico Rizzoli, SC Scienze e Tecnologie Chirurgiche - SS Piattaforma Scienze Omiche per Ortopedia Personalizzata, Bologna, Italy
| | - Lavinia Raimondi
- IRCCS Istituto Ortopedico Rizzoli, SC Scienze e Tecnologie Chirurgiche - SS Piattaforma Scienze Omiche per Ortopedia Personalizzata, Bologna, Italy
| | - Milena Fini
- IRCCS Istituto Ortopedico Rizzoli, SC Scienze e Tecnologie Chirurgiche - SS Piattaforma Scienze Omiche per Ortopedia Personalizzata, Bologna, Italy
| | - Carla Gentile
- University of Palermo, Department of Biological, Chemical, and Pharmaceutical Sciences and Technologies (STEBICEF), Section of Cellular Biology, Palermo, Italy
| | - Gianluca Giavaresi
- IRCCS Istituto Ortopedico Rizzoli, SC Scienze e Tecnologie Chirurgiche - SS Piattaforma Scienze Omiche per Ortopedia Personalizzata, Bologna, Italy
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15
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Karatas O, Gevrek F. 3,4,5-Trihydroxybenzoic Acid Attenuates Ligature-Induced Periodontal Disease in Wistar Rats. Antiinflamm Antiallergy Agents Med Chem 2021; 20:51-60. [PMID: 32026787 DOI: 10.2174/1871523019666200206094335] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Revised: 01/02/2020] [Accepted: 01/20/2020] [Indexed: 11/22/2022]
Abstract
BACKGROUND 3,4,5-Trihydroxybenzoic acid, which is also known as gallic acid, is an antiinflammatory agent that could provide beneficial effects in preventing periodontal inflammation. The present study aimed to evaluate the anti-inflammatory effects of gallic acid on experimental periodontitis in Wistar rats. Alveolar bone loss, osteoclastic activity, osteoblastic activity, and collagenase activity were also determined. METHODS Thirty-two Wistar rats were used in the present study. Study groups were created as following: Healthy control (C,n=8) group; periodontitis (P,n=8) group; periodontitis and 30 mg/kg gallic acid administered group (G30,n=8); periodontitis and 60 mg/kg gallic acid administered group (G60,n=8). Experimental periodontitis was created by placing 4-0 silk sutures around the mandibular right first molar tooth. Morphological changes in alveolar bone were determined by stereomicroscopic evaluation. Mandibles were undergone histological evaluation. Matrix metalloproteinase (MMP)-8, tissue inhibitor of MMPs (TIMP)-1, bone morphogenetic protein (BMP)-2 expressions, tartrateresistant acid phosphatase (TRAP) positive osteoclast cells, osteoblast, and inflammatory cell counts were determined. RESULTS The highest alveolar bone loss was observed in the periodontitis group. Both doses of gallic acid decreased alveolar bone loss as compared to the P group. TRAP-positive osteoclast cell counts were higher in the P group, and gallic acid successfully lowered these counts. Osteoblast cells also increased in gallic acid administered groups. Inflammation in the P group was also higher than those of C, G30, and G60 groups supporting the role of gallic acid in preventing inflammation. 30 and 60 mg/kg doses of gallic acid decreased MMP-8 levels and increased TIMP-1 levels. BMP levels increased in gallic acid administered groups, similar to several osteoblasts. CONCLUSION Present results revealed an anti-inflammatory effect of gallic acid, which was indicated by decreased alveolar bone loss and collagenase activity and increased osteoblastic activity.
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Affiliation(s)
- Ozkan Karatas
- Department of Periodontology, Faculty of Dentistry, Tokat Gaziosmanpasa University, Tokat, Turkey
| | - Fikret Gevrek
- Department of Histology and Embryology, Faculty of Medicine, Tokat Gaziosmanpasa University, Tokat, Turkey
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16
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Functional metabolomics innovates therapeutic discovery of traditional Chinese medicine derived functional compounds. Pharmacol Ther 2021; 224:107824. [PMID: 33667524 DOI: 10.1016/j.pharmthera.2021.107824] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2021] [Revised: 02/11/2021] [Accepted: 02/22/2021] [Indexed: 12/12/2022]
Abstract
Traditional Chinese medicines (TCMs) produce chemically diverse functional compounds that are importantly chemical resource for facilitating new drug discovery and development against a diversity of diseases. However, modern exploration of TCM derived functional compounds is significantly hindered by the inefficient elucidation of pharmacological functions over past decades, because conventional research methods are incapable of efficiently elucidating therapeutic potential of TCM conferred by multiple functional compounds. Functional metabolomics has the priority-capacity to characterize systems therapeutic actions of TCM by precisely capturing molecular interactions between disease response metabolite biomarkers (DRMB) and functional compounds (secondary metabolites), which underline pharmacological efficiency and associated therapeutic mechanisms. In this critical review, we innovatively summarize systems therapeutic feature of TCM derived functional compounds from a functional-metabolism perspective, then systems metabolic targets (SMT) identified by functional metabolomics method are strategically proposed to better understanding of therapeutic discovery of TCM derived functional compounds. In addition, we propose the perspective strategy as Spatial Temporal Operative Real Metabolomics (STORM) to considerably improve analytical capacity of functional metabolomics method by selectively incorporating the cutting edge technologies of mass spectrometry imaging, isotope-metabolic fluxomics, synthetic and biosynthetic chemistry, which could considerably enhance the precision and resolution of elucidating pharmacological efficiency and associated therapeutic mechanisms of TCM derived functional compounds. Collectively, such critical review is expected to provide novel perspective-strategy that could significantly improve modern exploration and exploitation of TCM derived functional compounds that further promote new drug discovery and development against the complex diseases.
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Zheng D, Xu Y, Yuan G, Wu X, Li Q. Bacterial ClpP Protease Is a Potential Target for Methyl Gallate. Front Microbiol 2021; 11:598692. [PMID: 33613462 PMCID: PMC7890073 DOI: 10.3389/fmicb.2020.598692] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Accepted: 12/28/2020] [Indexed: 11/29/2022] Open
Abstract
Methyl gallate (MG) is an effective microbicide with great potential application in the integrated management of plant diseases and an important potential drug for clinical application. However, its target remains unknown. This study conducted a transposon sequencing (Tn-seq) under MG treatment in plant pathogenic bacterium Ralstonia solanacearum. Tn-seq identified that the mutation of caseinolytic protease proteolytic subunit gene clpP significantly increased the resistance of R. solanacearum to MG, which was validated by the in-frame gene deletion. iTRAQ (isobaric tags for relative and absolute quantitation) proteomics analysis revealed that chemotaxis and flagella associated proteins were the major substrates degraded by ClpP under the tested condition. Moreover, sulfur metabolism-associated proteins were potential substrates of ClpP and were upregulated by MG treatment in wild-type R. solanacearum but not in clpP mutant. Furthermore, molecular docking confirmed the possible interaction between MG and ClpP. Collectively, this study revealed that MG might target bacterial ClpP, inhibit the activity of ClpP, and consequently disturb bacterial proteostasis, providing a theoretical basis for the application of MG.
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Affiliation(s)
- Dehong Zheng
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Agriculture, Guangxi University, Nanning, China
| | - Yanan Xu
- Pharmaceutical College, Guangxi Medical University, Nanning, China
| | - Gaoqing Yuan
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Agriculture, Guangxi University, Nanning, China
| | - Xiaogang Wu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Agriculture, Guangxi University, Nanning, China
| | - Qiqin Li
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Agriculture, Guangxi University, Nanning, China
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ASP2-1, a polysaccharide from Acorus tatarinowii Schott, inhibits osteoclastogenesis via modulation of NFATc1 and attenuates LPS-induced bone loss in mice. Int J Biol Macromol 2020; 165:2219-2230. [PMID: 33132123 DOI: 10.1016/j.ijbiomac.2020.10.077] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Revised: 09/24/2020] [Accepted: 10/10/2020] [Indexed: 11/21/2022]
Abstract
Spectroscopic analysis of HPLC-purified 7.3-kD Acorus tatarinowii Schott root polysaccharide ASP2-1 (FT-IR, NMR) revealed respective monosaccharide proportions of glucose: galactose: arabinose: xylose: galacturonic acid: mannose: rhamnose: glucuronic acid:fucose of 49.1:16.0:11.6:10.2:5.3:2.9:2.2:1.7:0.8. In vitro, ASP2-1 inhibited osteoclastogenesis-associated bone resorption, RANKL-induced osteoclastogenesis and F-actin ring formation and suppressed osteoclastogenesis-associated gene expression (e.g., TRAP, OSCAR, Atp6v0d2, αV, β3, MMP9 and CtsK) as shown via RT-PCR. ASP2-1-treated RANKL-stimulated bone marrow-derived macrophages exhibited decreased levels of NFATc1 and c-Fos mRNAs and corresponding transcription factor proteins, elevated expression of negative NFATc1 regulators (Mafb, IRF8, Bcl6) and reduced their upstream negative regulator (Blimp1) expression. ASP2-1 inhibition of NFATc1 expression involved PLCγ2-Ca2+ oscillation-calcineurin axis suppression, reflecting suppression of RANKL-induced PLCγ2 activation (and associated Ca2+ oscillation) and calcineurin catalytic subunit PP2BAα expression without inhibiting NF-κB and MAPKs activation or phosphorylation. Staining (H&E, TRAP) and micro-CT assays revealed ASP2-1 attenuated bone destruction and osteoclast over-activation and improved tibia micro-architecture in a murine LPS-induced bone loss model. Thus, ASP2-1 may alleviate inflammatory bone loss-associated diseases.
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The Role of Ca 2+-NFATc1 Signaling and Its Modulation on Osteoclastogenesis. Int J Mol Sci 2020; 21:ijms21103646. [PMID: 32455661 PMCID: PMC7279283 DOI: 10.3390/ijms21103646] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Revised: 05/18/2020] [Accepted: 05/19/2020] [Indexed: 12/14/2022] Open
Abstract
The increasing of intracellular calcium concentration is a fundamental process for mediating osteoclastogenesis, which is involved in osteoclastic bone resorption. Cytosolic calcium binds to calmodulin and subsequently activates calcineurin, leading to NFATc1 activation, a master transcription factor required for osteoclast differentiation. Targeting the various activation processes in osteoclastogenesis provides various therapeutic strategies for bone loss. Diverse compounds that modulate calcium signaling have been applied to regulate osteoclast differentiation and, subsequently, attenuate bone loss. Thus, in this review, we summarized the modulation of the NFATc1 pathway through various compounds that regulate calcium signaling and the calcium influx machinery. Furthermore, we addressed the involvement of transient receptor potential channels in osteoclastogenesis.
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Excretion, Metabolism and Cytochrome P450 Inhibition of Methyl 3,4-Dihydroxybenzoate (MDHB): A Potential Candidate to Treat Neurodegenerative Diseases. Eur J Drug Metab Pharmacokinet 2019; 45:51-69. [PMID: 31602595 DOI: 10.1007/s13318-019-00576-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
BACKGROUND AND OBJECTIVES Methyl 3,4-dihydroxybenzoate (MDHB) has the potential to prevent neurodegenerative diseases (NDDs). The present work investigated its excretion, metabolism, and cytochrome P450-based drug-drug interactions (DDIs). METHODS After intragastric administration of MDHB, the parent drug was assayed in the urine and faeces of mice. Metabolites of MDHB in the urine, faeces, brain, plasma and liver were detected by liquid chromatography-hybrid quadrupole time-of-flight mass spectrometry (LC-QTOF/MS). A cocktail approach was used to evaluate the inhibition of cytochrome P450 isoforms by MDHB. RESULTS The cumulative excretion permille of MDHB in the urine and faeces were found to be 0.67 ± 0.31 and 0.49 ± 0.44‰, respectively. A total of 96 metabolites of MDHB were identified, and all IC50 (half-maximal inhibitory concentration) values of MDHB towards cytochrome P450 isoforms were > 100 μM. CONCLUSIONS The results suggest that MDHB has a low parent drug cumulative excretion percentage and that MDHB has multiple metabolites and is mainly metabolized through the loss of -CH2 and -CO2, the loss of -CH2O, ester bond hydrolysis, the loss of -O and -CO2, isomerization, methylation, sulfate conjugation, the loss of -CH2O and -O and glycine conjugation, glycine conjugation, the loss of two -O groups and alanine conjugation, the loss of -CH2O and -O and glucose conjugation, glucuronidation, glucose conjugation, etc., in vivo. Finally, MDHB has a low probability of cytochrome P450-based DDIs.
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Identification of anti-osteoclastogenic compounds from Cleistocalyx operculatus flower buds and their effects on RANKL-induced osteoclastogenesis. J Funct Foods 2019. [DOI: 10.1016/j.jff.2019.05.044] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
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Lei W, Deng YF, Hu XY, Ni JN, Jiang M, Bai G. Phthalides, senkyunolide A and ligustilide, show immunomodulatory effect in improving atherosclerosis, through inhibiting AP-1 and NF-κB expression. Biomed Pharmacother 2019; 117:109074. [DOI: 10.1016/j.biopha.2019.109074] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2019] [Revised: 05/29/2019] [Accepted: 06/02/2019] [Indexed: 12/12/2022] Open
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Role of the Btk-PLC γ2 Signaling Pathway in the Bone Destruction of Apical Periodontitis. Mediators Inflamm 2019; 2019:8767529. [PMID: 31427888 PMCID: PMC6683780 DOI: 10.1155/2019/8767529] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2019] [Accepted: 05/20/2019] [Indexed: 12/11/2022] Open
Abstract
Chronic apical periodontitis is characterized by alveolar bone absorption in the apical region and is the result of the participation of various inflammatory mediators. Studies have shown that the Bruton tyrosine kinase- (Btk-) phospholipase Cγ2 (PLCγ2) signaling pathway plays an important role in bone absorption, but it is unknown whether it plays a role in apical periodontitis bone destruction. Therefore, this study verified the role of Btk and PLCγ2 in bone resorption of apical periodontitis by in vivo and in vitro experiments. In the in vivo experiment, a mice model of apical periodontitis was established; apical bone resorption was confirmed by the numbers of osteoclasts and HE staining. Btk, PLCγ2, and nuclear factor of activated T-cells 1 (NFATc-1) were detected by immunohistochemical staining. In the in vitro experiment, lipopolysaccharides (LPS) were used to stimulate osteoclast precursor cell RAW264.7 to establish an inflammatory microenvironment and detect osteoclast differentiation. By silencing Btk, the expression of Btk, PLCγ2, and NFATc-1 was detected by real-time qPCR and Western blot, and osteoclastogenesis was detected by enzyme histochemical staining to further confirm the role of Btk in bone resorption. It was found that the expression of Btk, PLCγ2, and NFATc-1 changed significantly with the progression of inflammation and bone destruction, indicating that Btk and PLCγ2 may be involved in the progression of inflammation in apical periodontitis and bone absorption. In vitro experiments confirmed that the differentiation of osteoclasts and the expression of PLCγ2 and NFATc-1 were significantly inhibited after silencing Btk expression, but osteoclast precursor cells could be differentiated due to the proinflammatory factor lipopolysaccharide. This study demonstrates that Btk and PLCγ2 are key factors involved in the apical inflammatory response and bone destruction.
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Chen X, Chen X, Zhou Z, Mao Y, Wang Y, Ma Z, Xu W, Qin A, Zhang S. Nirogacestat suppresses RANKL-Induced osteoclast formation in vitro and attenuates LPS-Induced bone resorption in vivo. Exp Cell Res 2019; 382:111470. [PMID: 31211955 DOI: 10.1016/j.yexcr.2019.06.015] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2019] [Revised: 06/11/2019] [Accepted: 06/14/2019] [Indexed: 02/07/2023]
Abstract
Bone resorption, initiated by osteoclasts (OCs), plays an essential role in bone homeostasis. The abnormalities of bone resorption may induce a series of diseases, including osteoarthritis, osteoporosis and aseptic peri-implant loosening. Nirogacestat (PF-03084014, PF), a novel gamma-secretase inhibitor, has been used in phase II clinical trial for treatment of desmoid tumor. However, whether it has the therapeutic effect on abnormal bone resorption remains to be evaluated. In this study, we investigated the role of PF in the regulation of receptor activator of nuclear factor-kB ligand (RANKL)-induced osteoclastogenesis in vitro, and the lipopolysaccharide (LPS)-induced bone resorption in vivo. It was found that PF could suppress the formation of osteoclasts from bone marrow macrophages (BMMs) without causing cytotoxicity, inhibit bone resorption and downregulate the mRNA level of osteoclast-specific markers, including calcitonin receptor (CTR), tartrate resistant acid phosphatase (TRAP), cathepsin K (CTSK), dendritic cell-specific transmembrane protein (Dc-stamp), Atp6v0d2 (V-ATPase d2) and nuclear factor of activated T-cells cytoplasmic 1 (NFATc1). Furthermore, Notch2 signaling, as well as RANKL-induced AKT signaling was significantly inhibited in BMMs. Consistent with in vitro observation, we found that PF greatly ameliorated LPS-induced bone resorption. Taken together, our study demonstrated that PF has a great potential to be used in management of osteolytic diseases.
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Affiliation(s)
- Xuzhuo Chen
- Department of Oral Surgery, Ninth People's Hospital, College of Stomatology, Shanghai JiaoTong University School of Medicine, Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, National Clinical Research Center of Stomatology, Shanghai, 200011, China
| | - Xinwei Chen
- Department of Oral Surgery, Ninth People's Hospital, College of Stomatology, Shanghai JiaoTong University School of Medicine, Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, National Clinical Research Center of Stomatology, Shanghai, 200011, China
| | - Zhihang Zhou
- Department of Oral Surgery, Ninth People's Hospital, College of Stomatology, Shanghai JiaoTong University School of Medicine, Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, National Clinical Research Center of Stomatology, Shanghai, 200011, China
| | - Yi Mao
- Department of Oral Surgery, Ninth People's Hospital, College of Stomatology, Shanghai JiaoTong University School of Medicine, Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, National Clinical Research Center of Stomatology, Shanghai, 200011, China
| | - Yexin Wang
- Department of Oral Surgery, Ninth People's Hospital, College of Stomatology, Shanghai JiaoTong University School of Medicine, Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, National Clinical Research Center of Stomatology, Shanghai, 200011, China
| | - Zhigui Ma
- Department of Oral Surgery, Ninth People's Hospital, College of Stomatology, Shanghai JiaoTong University School of Medicine, Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, National Clinical Research Center of Stomatology, Shanghai, 200011, China
| | - Weifeng Xu
- Department of Oral Surgery, Ninth People's Hospital, College of Stomatology, Shanghai JiaoTong University School of Medicine, Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, National Clinical Research Center of Stomatology, Shanghai, 200011, China.
| | - An Qin
- Department of Orthopedics, Shanghai Key Laboratory of Orthopedic Implant, Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, 200011, China.
| | - Shanyong Zhang
- Department of Oral Surgery, Ninth People's Hospital, College of Stomatology, Shanghai JiaoTong University School of Medicine, Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, National Clinical Research Center of Stomatology, Shanghai, 200011, China.
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Huang XL, Huang LY, Cheng YT, Li F, Zhou Q, Wu C, Shi QH, Guan ZZ, Liao J, Hong W. Zoledronic acid inhibits osteoclast differentiation and function through the regulation of NF-κB and JNK signalling pathways. Int J Mol Med 2019; 44:582-592. [PMID: 31173157 PMCID: PMC6605660 DOI: 10.3892/ijmm.2019.4207] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Accepted: 05/13/2019] [Indexed: 12/20/2022] Open
Abstract
It is well known that extensive osteoclast formation plays a key role in osteoporosis in post‑menopausal women and the elderly. The suppression of extensive osteoclastogenesis and bone resorption may be an effective preventive strategy for osteoporosis. Zoledronic acid (ZOL) has been indicated to play an essential role in regulating bone mineral density and has already been used in large clinical trials. However, the effects of ZOL on osteoclastogenesis remain to be fully elucidated. Therefore, the present study aimed to determine the effects of ZOL on osteoclastogenesis, and to explore the corresponding signalling pathways. By using a cell viability assay, as well as in vitro osteoclastogenesis, immunofluorescence and resorption pit assays, we demonstrated that ZOL (0.1‑5 µM) suppressed receptor activator of nuclear factor‑κB ligand (RANKL)‑induced osteoclast differentiation and bone resorptive activity. Furthermore, western blot analysis and reverse transcription‑quantitative PCR indicated that ZOL inhibited the RANKL‑induced activation of NF‑κB and the phosphorylation of JNK in RAW264.7 cells, and subsequently decreased the expression of osteoclastogenesis‑associated genes, including calcitonin receptor, tartrate‑resistant acid phosphatase and dendritic cell‑specific transmembrane protein. ZOL inhibited osteoclast formation and resorption in vitro by specifically suppressing NF‑κB and JNK signalling. On the whole, the findings of this study indicate that ZOL may serve as a potential agent for the treatment of osteoclast‑associated diseases, including osteoporosis.
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Affiliation(s)
- Xiao-Lin Huang
- School/Hospital of Stomatology and Key Laboratory of Endemic and Ethnic Diseases, Guizhou Medical University, Ministry of Education, Guiyang, Guizhou 550004, P.R. China
| | - Lie-Yu Huang
- Department of Medical Psychology, Guizhou Medical University, Guiyang, Guizhou 550004, P.R. China
| | - Yu-Ting Cheng
- School/Hospital of Stomatology and Key Laboratory of Endemic and Ethnic Diseases, Guizhou Medical University, Ministry of Education, Guiyang, Guizhou 550004, P.R. China
| | - Fang Li
- School/Hospital of Stomatology and Key Laboratory of Endemic and Ethnic Diseases, Guizhou Medical University, Ministry of Education, Guiyang, Guizhou 550004, P.R. China
| | - Qian Zhou
- School/Hospital of Stomatology and Key Laboratory of Endemic and Ethnic Diseases, Guizhou Medical University, Ministry of Education, Guiyang, Guizhou 550004, P.R. China
| | - Chao Wu
- School/Hospital of Stomatology and Key Laboratory of Endemic and Ethnic Diseases, Guizhou Medical University, Ministry of Education, Guiyang, Guizhou 550004, P.R. China
| | - Qian-Hui Shi
- School/Hospital of Stomatology and Key Laboratory of Endemic and Ethnic Diseases, Guizhou Medical University, Ministry of Education, Guiyang, Guizhou 550004, P.R. China
| | - Zhi-Zhong Guan
- School/Hospital of Stomatology and Key Laboratory of Endemic and Ethnic Diseases, Guizhou Medical University, Ministry of Education, Guiyang, Guizhou 550004, P.R. China
| | - Jian Liao
- School/Hospital of Stomatology and Key Laboratory of Endemic and Ethnic Diseases, Guizhou Medical University, Ministry of Education, Guiyang, Guizhou 550004, P.R. China
| | - Wei Hong
- School/Hospital of Stomatology and Key Laboratory of Endemic and Ethnic Diseases, Guizhou Medical University, Ministry of Education, Guiyang, Guizhou 550004, P.R. China
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Zhang Y, Wang Z, Xie X, Wang J, Wang Y, Peng QS, Zhang M, Wu D, Liu N, Wang HB, Sun WC. Tatarinan N inhibits osteoclast differentiation through attenuating NF-κB, MAPKs and Ca 2+-dependent signaling. Int Immunopharmacol 2018; 65:199-211. [PMID: 30316078 DOI: 10.1016/j.intimp.2018.09.030] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2017] [Revised: 09/17/2018] [Accepted: 09/21/2018] [Indexed: 02/08/2023]
Abstract
Osteoclasts are multinucleated cells that originate from hemopoietic stem cells. Targeting over activated osteoclasts is thought to be an effective therapeutic approach to osteoporosis. In a previous study, we reported that Tatarinan O, a lignin-like compound, suppressed RANKL-induced osteoclastogenesis. In this study, we further examined the effects on osteoclast formation of three lignin-like compounds including Tatarinan N (TN), Tatarinan U (TU) and Tatarinan V (TV), all containing a common structure of asarone. We found that only TN suppressed RANKL-induced osteoclast differentiation, bone resorption pit formation and F-acting ring formation. TU and TV did not influence RANKL-induced osteoclastogenesis. We also found that TN dose-dependently inhibited the expression of osteoclastogenesis-associated genes, including TRAP, cathepsin K and MMP-9. Furthermore, we found that TN down-regulated the key transcription factor NFATc1 and c-Fos by preventing the activation of NF-κB and phosphorylation of MAPKs including ERK1/2 and p38 but not JNK. TN attenuated calcineurin expression via suppression of the Btk-PLCγ2 cascade and reduction of intracellular Ca2+, modulating NFATc1 activation. Taking together, our results indicated that TN might have therapeutic potential for osteoporosis.
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Affiliation(s)
- Yuxin Zhang
- Key Laboratory of Zoonosis, Ministry of Education, The Second Hospital of Jilin University, Changchun, China; Key Laboratory of Molecular Enzymology & Engineering, Ministry of Education, College of Life Science, Jilin University, Changchun, China
| | - Zhi Wang
- Key Laboratory of Molecular Enzymology & Engineering, Ministry of Education, College of Life Science, Jilin University, Changchun, China
| | - Xiaona Xie
- The First Hospital of Jilin University, Changchun, China
| | - Jing Wang
- College of Chemistry and Biology, Beihua University, Jilin, China
| | - Yingjian Wang
- Department of Gynaecology and Obstetrics, China-Japan Union Hospital, Jilin University, Changchun, China
| | - Qi-Sheng Peng
- Key Laboratory of Zoonosis, Ministry of Education, The Second Hospital of Jilin University, Changchun, China
| | - Maolin Zhang
- Key Laboratory of Zoonosis, Ministry of Education, The Second Hospital of Jilin University, Changchun, China
| | - Donglin Wu
- Jilin Provincial Center for Disease Control and Prevention, Changchun, China
| | - Ning Liu
- Key Laboratory of Zoonosis, Ministry of Education, The Second Hospital of Jilin University, Changchun, China.
| | - Hong-Bing Wang
- School of Life Sciences and Technology, Tongji University, Shanghai, China.
| | - Wan-Chun Sun
- Key Laboratory of Zoonosis, Ministry of Education, The Second Hospital of Jilin University, Changchun, China.
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27
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Schiffner R, Reiche J, Brodt S, Brinkmann O, Bungartz M, Matziolis G, Schmidt M. A Simple Procedure for the Evaluation of Bone Vitality by Staining with a Tetrazolium Salt. Int J Mol Sci 2017; 18:ijms18081646. [PMID: 28788079 PMCID: PMC5578036 DOI: 10.3390/ijms18081646] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2017] [Revised: 07/25/2017] [Accepted: 07/27/2017] [Indexed: 12/28/2022] Open
Abstract
Presently, no intra-operative method for a direct assessment of bone vitality exists. Therefore, we set out to test the applicability of tetrazolium-based staining on bone samples. The explanted femoral heads of 37 patients were used to obtain either cancellous bone fragments or bone slices. Samples were stained with 2,3,5-triphenyl-2H-tetrazolium chloride (TTC) or 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (thiazolyl blue, MTT) at different times (one to twelve hours) after explantation. Staining was quantified either spectrophotometrically after extraction of the dyes or by densitometric image analysis. TTC-staining of cancellous bone fragments and bone slices, respectively, indicated the detectability of vital cells in both types of samples in a window of up to six hours after explantation. Staining intensity at later time-points was indistinguishable from the staining of untreated samples or sodium azide treated samples, which represent dead cells. In contrast, MTT-staining of bone slices revealed intense unspecific staining, which obscured the evaluation of the vitality of the samples. The lack of a detectable increase of colour intensity in TTC-stained bone samples, which were treated more than six hours after explantation, corresponds to reduced fracture healing. The described simple procedure could provide a basis for an intraoperative decision by the orthopaedic surgeon.
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Affiliation(s)
- René Schiffner
- Orthopaedic Department, Jena University Hospital-Friedrich Schiller University, Campus Eisenberg, Klosterlausnitzer Str. 81, 07607 Eisenberg, Germany.
| | - Juliane Reiche
- Institute for Biochemistry II, Jena University Hospital-Friedrich Schiller University, Nonnenplan 4, 07743 Jena, Germany.
| | - Steffen Brodt
- Orthopaedic Department, Jena University Hospital-Friedrich Schiller University, Campus Eisenberg, Klosterlausnitzer Str. 81, 07607 Eisenberg, Germany.
| | - Olaf Brinkmann
- Orthopaedic Department, Jena University Hospital-Friedrich Schiller University, Campus Eisenberg, Klosterlausnitzer Str. 81, 07607 Eisenberg, Germany.
| | - Matthias Bungartz
- Orthopaedic Department, Jena University Hospital-Friedrich Schiller University, Campus Eisenberg, Klosterlausnitzer Str. 81, 07607 Eisenberg, Germany.
| | - Georg Matziolis
- Orthopaedic Department, Jena University Hospital-Friedrich Schiller University, Campus Eisenberg, Klosterlausnitzer Str. 81, 07607 Eisenberg, Germany.
| | - Martin Schmidt
- Institute for Biochemistry II, Jena University Hospital-Friedrich Schiller University, Nonnenplan 4, 07743 Jena, Germany.
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