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Batoon L, Koh AJ, Millard SM, Grewal J, Choo FM, Kannan R, Kinnaird A, Avey M, Teslya T, Pettit AR, McCauley LK, Roca H. Induction of osteoblast apoptosis stimulates macrophage efferocytosis and paradoxical bone formation. Bone Res 2024; 12:43. [PMID: 39103355 DOI: 10.1038/s41413-024-00341-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2023] [Revised: 04/03/2024] [Accepted: 05/09/2024] [Indexed: 08/07/2024] Open
Abstract
Apoptosis is crucial for tissue homeostasis and organ development. In bone, apoptosis is recognized to be a main fate of osteoblasts, yet the relevance of this process remains underexplored. Using our murine model with inducible Caspase 9, the enzyme that initiates intrinsic apoptosis, we triggered apoptosis in a proportion of mature osteocalcin (OCN+) osteoblasts and investigated the impact on postnatal bone development. Osteoblast apoptosis stimulated efferocytosis by osteal macrophages. A five-week stimulation of OCN+ osteoblast apoptosis in 3-week-old male and female mice significantly enhanced vertebral bone formation while increasing osteoblast precursors. A similar treatment regimen to stimulate osterix+ cell apoptosis had no impact on bone volume or density. The vertebral bone accrual following stimulation of OCN+ osteoblast apoptosis did not translate in improved mechanical strength due to disruption of the lacunocanalicular network. The observed bone phenotype was not influenced by changes in osteoclasts but was associated with stimulation of macrophage efferocytosis and vasculature formation. Phenotyping of efferocytic macrophages revealed a unique transcriptomic signature and expression of factors including VEGFA. To examine whether macrophages participated in the osteoblast precursor increase following osteoblast apoptosis, macrophage depletion models were employed. Depletion of macrophages via clodronate-liposomes and the CD169-diphtheria toxin receptor mouse model resulted in marked reduction in leptin receptor+ and osterix+ osteoblast precursors. Collectively, this work demonstrates the significance of osteoblast turnover via apoptosis and efferocytosis in postnatal bone formation. Importantly, it exposes the potential of targeting this mechanism to promote bone anabolism in the clinical setting.
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Affiliation(s)
- Lena Batoon
- Department of Periodontics and Oral Medicine, University of Michigan, School of Dentistry, Ann Arbor, MI, 48109, USA
| | - Amy Jean Koh
- Department of Periodontics and Oral Medicine, University of Michigan, School of Dentistry, Ann Arbor, MI, 48109, USA
| | - Susan Marie Millard
- Mater Research Institute, The University of Queensland, Brisbane, QLD, 4102, Australia
| | - Jobanpreet Grewal
- Department of Periodontics and Oral Medicine, University of Michigan, School of Dentistry, Ann Arbor, MI, 48109, USA
| | - Fang Ming Choo
- Mater Research Institute, The University of Queensland, Brisbane, QLD, 4102, Australia
| | - Rahasudha Kannan
- Department of Periodontics and Oral Medicine, University of Michigan, School of Dentistry, Ann Arbor, MI, 48109, USA
| | - Aysia Kinnaird
- Department of Periodontics and Oral Medicine, University of Michigan, School of Dentistry, Ann Arbor, MI, 48109, USA
| | - Megan Avey
- Department of Periodontics and Oral Medicine, University of Michigan, School of Dentistry, Ann Arbor, MI, 48109, USA
| | - Tatyana Teslya
- Department of Periodontics and Oral Medicine, University of Michigan, School of Dentistry, Ann Arbor, MI, 48109, USA
| | - Allison Robyn Pettit
- Mater Research Institute, The University of Queensland, Brisbane, QLD, 4102, Australia
| | - Laurie K McCauley
- Department of Periodontics and Oral Medicine, University of Michigan, School of Dentistry, Ann Arbor, MI, 48109, USA.
- Department of Pathology, University of Michigan, Medical School, Ann Arbor, MI, 48109, USA.
| | - Hernan Roca
- Department of Periodontics and Oral Medicine, University of Michigan, School of Dentistry, Ann Arbor, MI, 48109, USA.
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2
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Rahman A, Haider MF. A comprehensive review on glucocorticoids induced osteoporosis: A medication caused disease. Steroids 2024; 207:109440. [PMID: 38754651 DOI: 10.1016/j.steroids.2024.109440] [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: 03/27/2024] [Revised: 05/11/2024] [Accepted: 05/13/2024] [Indexed: 05/18/2024]
Abstract
Glucocorticoids (GCs) are steroid hormones that are extensively used in the treatment of autoimmune diseases, inflammation, and cancer. The major ill effect of administering GCs is that it has a deleterious effect on bone, which leads to GC-induced osteoporosis. GC therapy induces bone loss and is associated with the risk of nonvertebral and vertebral fractures, as it works in combination by increasing bone reabsorption and suppressing bone formation during the initial phase of therapy. It is seen and established that GC in excess or in low dose for 3 months or more can be a risk factor for fracture, and the risk increases with an increase in dose and duration of usage. The most common cause of secondary osteoporosis is the administration of GC inside the body to treat various diseases. The degree of bone loss is directly proportional to the GC dose and the exposure duration. The first step is to evaluate the patients' risk factors for the development of glucocorticoids that induce osteoporosis, which include the dose, duration of use, patient age, sex, previous fractures, and other medical conditions.
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Affiliation(s)
- Asim Rahman
- Faculty of Pharmacy, Integral University, Lucknow 226026, India
| | - Md Faheem Haider
- Faculty of Pharmacy, Integral University, Lucknow 226026, India.
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3
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Huchthausen J, Braasch J, Escher BI, König M, Henneberger L. Effects of Chemicals in Reporter Gene Bioassays with Different Metabolic Activities Compared to Baseline Toxicity. Chem Res Toxicol 2024; 37:744-756. [PMID: 38652132 PMCID: PMC11110108 DOI: 10.1021/acs.chemrestox.4c00017] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2024] [Revised: 04/05/2024] [Accepted: 04/09/2024] [Indexed: 04/25/2024]
Abstract
High-throughput cell-based bioassays are used for chemical screening and risk assessment. Chemical transformation processes caused by abiotic degradation or metabolization can reduce the chemical concentration or, in some cases, lead to the formation of more toxic transformation products. Unaccounted loss processes may falsify the bioassay results. Capturing the formation and effects of transformation products is important for relating the in vitro effects to in vivo. Reporter gene cell lines are believed to have low metabolic activity, but inducibility of cytochrome P450 (CYP) enzymes has been reported. Baseline toxicity is the minimal toxicity a chemical can have and is caused by the incorporation of the chemical into cell membranes. In the present study, we improved an existing baseline toxicity model based on a newly defined critical membrane burden derived from freely dissolved effect concentrations, which are directly related to the membrane concentration. Experimental effect concentrations of 94 chemicals in three bioassays (AREc32, ARE-bla and GR-bla) were compared with baseline toxicity by calculating the toxic ratio (TR). CYP activities of all cell lines were determined by using fluorescence-based assays. Only ARE-bla showed a low basal CYP activity and inducibility and AREc32 showed a low inducibility. Overall cytotoxicity was similar in all three assays despite the different metabolic activities indicating that chemical metabolism is not relevant for the cytotoxicity of the tested chemicals in these assays. Up to 28 chemicals showed specific cytotoxicity with TR > 10 in the bioassays, but baseline toxicity could explain the effects of the majority of the remaining chemicals. Seven chemicals showed TR < 0.1 indicating inaccurate physicochemical properties or experimental artifacts like chemical precipitation, volatilization, degradation, or other loss processes during the in vitro bioassay. The new baseline model can be used not only to identify specific cytotoxicity mechanisms but also to identify potential problems in the experimental performance or evaluation of the bioassay and thus improve the quality of the bioassay data.
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Affiliation(s)
- Julia Huchthausen
- Department
of Cell Toxicology, Helmholtz Centre for
Environmental Research − UFZ, Permoserstr. 15, 04318 Leipzig, Germany
| | - Jenny Braasch
- Department
of Cell Toxicology, Helmholtz Centre for
Environmental Research − UFZ, Permoserstr. 15, 04318 Leipzig, Germany
| | - Beate I. Escher
- Department
of Cell Toxicology, Helmholtz Centre for
Environmental Research − UFZ, Permoserstr. 15, 04318 Leipzig, Germany
- Environmental
Toxicology, Department of Geosciences, Eberhard
Karls University Tübingen, 72076 Tübingen, Germany
| | - Maria König
- Department
of Cell Toxicology, Helmholtz Centre for
Environmental Research − UFZ, Permoserstr. 15, 04318 Leipzig, Germany
| | - Luise Henneberger
- Department
of Cell Toxicology, Helmholtz Centre for
Environmental Research − UFZ, Permoserstr. 15, 04318 Leipzig, Germany
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4
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Wang W, Jiang H, Yu J, Lou C, Lin J. Astaxanthin-mediated Nrf2 activation ameliorates glucocorticoid-induced oxidative stress and mitochondrial dysfunction and impaired bone formation of glucocorticoid-induced osteonecrosis of the femoral head in rats. J Orthop Surg Res 2024; 19:294. [PMID: 38745231 PMCID: PMC11092235 DOI: 10.1186/s13018-024-04775-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/18/2024] [Accepted: 05/02/2024] [Indexed: 05/16/2024] Open
Abstract
BACKGROUND Osteonecrosis of the femoral head caused by glucocorticoids (GIONFH) is a significant issue resulting from prolonged or excessive clinical glucocorticoid use. Astaxanthin, an orange-red carotenoid present in marine organisms, has been the focus of this study to explore its impact and mechanism on osteoblast apoptosis induced by dexamethasone (Dex) and GIONFH. METHODS In this experiment, bioinformatic prediction, molecular docking and dynamics simulation, cytotoxicity assay, osteogenic differentiation, qRT-PCR analysis, terminal uridine nickend labeling (TUNEL) assay, determination of intracellular ROS, mitochondrial function assay, immunofluorescence, GIONFH rat model construction, micro-computed tomography (micro-CT) scans were performed. RESULTS Our research demonstrated that a low dose of astaxanthin was non-toxic to healthy osteoblasts and restored the osteogenic function of Dex-treated osteoblasts by reducing oxidative stress, mitochondrial dysfunction, and apoptosis. Furthermore, astaxanthin rescued the dysfunction in poor bone quality, bone metabolism and angiogenesis of GIONFH rats. The mechanism behind this involves astaxanthin counteracting Dex-induced osteogenic damage by activating the Nrf2 pathway. CONCLUSION Astaxanthin shields osteoblasts from glucocorticoid-induced oxidative stress and mitochondrial dysfunction via Nrf2 pathway activation, making it a potential therapeutic agent for GIONFH treatment.
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Affiliation(s)
- Weidan Wang
- The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325000, Zhejiang Province, China
- Key Laboratory of Orthopedics of Zhejiang Province, Wenzhou, 325000, Zhejiang Province, China
- The Second Clinical School of Medicine, Wenzhou Medical University, Wenzhou, 325000, Zhejiang Province, China
| | - Hongyi Jiang
- The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325000, Zhejiang Province, China
- Key Laboratory of Orthopedics of Zhejiang Province, Wenzhou, 325000, Zhejiang Province, China
- The Second Clinical School of Medicine, Wenzhou Medical University, Wenzhou, 325000, Zhejiang Province, China
| | - Jiachen Yu
- The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325000, Zhejiang Province, China
- Key Laboratory of Orthopedics of Zhejiang Province, Wenzhou, 325000, Zhejiang Province, China
- The Second Clinical School of Medicine, Wenzhou Medical University, Wenzhou, 325000, Zhejiang Province, China
| | - Chao Lou
- The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325000, Zhejiang Province, China
- Key Laboratory of Orthopedics of Zhejiang Province, Wenzhou, 325000, Zhejiang Province, China
- The Second Clinical School of Medicine, Wenzhou Medical University, Wenzhou, 325000, Zhejiang Province, China
| | - Jian Lin
- The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, 325000, Zhejiang Province, China.
- Key Laboratory of Orthopedics of Zhejiang Province, Wenzhou, 325000, Zhejiang Province, China.
- The Second Clinical School of Medicine, Wenzhou Medical University, Wenzhou, 325000, Zhejiang Province, China.
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5
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Han J, Zhu Y, Zhang J, Kapilevich L, Zhang XA. Noncoding RNAs: the crucial role of programmed cell death in osteoporosis. Front Cell Dev Biol 2024; 12:1409662. [PMID: 38799506 PMCID: PMC11116712 DOI: 10.3389/fcell.2024.1409662] [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: 03/30/2024] [Accepted: 04/26/2024] [Indexed: 05/29/2024] Open
Abstract
Osteoporosis is the most common skeletal disease characterized by an imbalance between bone resorption and bone remodeling. Osteoporosis can lead to bone loss and bone microstructural deterioration. This increases the risk of bone fragility and fracture, severely reducing patients' mobility and quality of life. However, the specific molecular mechanisms involved in the development of osteoporosis remain unclear. Increasing evidence suggests that multiple noncoding RNAs show differential expression in the osteoporosis state. Meanwhile, noncoding RNAs have been associated with an increased risk of osteoporosis and fracture. Noncoding RNAs are an important class of factors at the level of gene regulation and are mainly involved in cell proliferation, cell differentiation, and cell death. Programmed cell death is a genetically-regulated form of cell death involved in regulating the homeostasis of the internal environment. Noncoding RNA plays an important role in the programmed cell death process. The exploration of the noncoding RNA-programmed cell death axis has become an interesting area of research and has been shown to play a role in many diseases such as osteoporosis. In this review, we summarize the latest findings on the mechanism of noncoding RNA-mediated programmed cell death on bone homeostasis imbalance leading to osteoporosis. And we provide a deeper understanding of the role played by the noncoding RNA-programmed cell death axis at the gene regulatory level of osteoporosis. We hope to provide a unique opportunity to develop novel diagnostic and therapeutic approaches for osteoporosis.
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Affiliation(s)
- Juanjuan Han
- College of Exercise and Health, Shenyang Sport University, Shenyang, China
| | - Yuqing Zhu
- College of Exercise and Health, Shenyang Sport University, Shenyang, China
| | - Jiale Zhang
- College of Exercise and Health, Shenyang Sport University, Shenyang, China
| | - Leonid Kapilevich
- Faculty of Physical Education, Tomsk Stаte University, Tomsk, Russia
| | - Xin-an Zhang
- College of Exercise and Health, Shenyang Sport University, Shenyang, China
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6
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Liu Y, Zhou M, Wang R, Liang Y, Zhuang G, Chen X, Luo S, Cai Y, Song C, Liu L, Ma L, Yao W, Liu Y, Cui L. Alleviation of Glucocorticoid-Induced Osteoporosis in Rats by Ethanolic Reynoutria multiflora (Thunb.) Moldenke Extract. J Med Food 2024; 27:287-300. [PMID: 38442325 DOI: 10.1089/jmf.2023.k.0105] [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] [Indexed: 03/07/2024] Open
Abstract
Secondary osteoporosis is frequently due to the use of high-dose glucocorticoids (GCs). The existing strategy for managing glucocorticoid-induced osteoporosis (GIOP) is considered insufficient and remains in a state of ongoing evolution. Therefore, it is crucial to develop more precise and effective agents for the treatment of GIOP. The constituents of Reynoutria multiflora (Thunb.) Moldenke, specifically Polygonum multiflorum (PM) Thunb, have previously shown promise in mitigating osteopenia. This study aimed to investigate the therapeutic effects of an ethanolic PM extract (PMR30) against GIOP in male rats. Prednisone (6 mg/kg/day, GC) was continuously administered to rats to induce GIOP, and they were subjected to treatment with or without ethanolic PMR30 for a duration of 120 days. Serum was collected for biochemical marker analysis. Bone histomorphometric, histological, and TUNEL analyses were performed on tibia samples. The protein expressions of LC3, Agt5, and Beclin 1 in the femur underwent examination through western blotting. Prolonged and excessive GC treatment significantly impeded bone formation, concomitant with reduced bone mass and body weight. It also suppressed OCN and OPG/RANKL in serum, and decreased Beclin 1 and LC3 in bone. Simultaneously, there was an elevation in bone resorption markers and apoptosis. Treatments with both high dose and low dose of PMR30 alleviated GIOP, stimulated bone formation, and upregulated OCN and OPG/RANKL, while suppressing TRACP-5b, CTX-I, and apoptosis. The impact of PMR30 possibly involves the enhancement of autophagy proteins (LC3, Agt5, and Beclin 1) and the inhibition of apoptosis within the bone. PMR30 holds promise as a prospective therapeutic agent for preventing and treating GIOP.
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Affiliation(s)
- Yuyu Liu
- Guangdong Key Laboratory for Research and Development of Natural Drug, Department of Pharmacology, Guangdong Medical University, Zhanjiang, China
| | - Manru Zhou
- Guangdong Key Laboratory for Research and Development of Natural Drug, Department of Pharmacology, Guangdong Medical University, Zhanjiang, China
- Guangdong Vocational Institute of Public Administration, Guangzhou, China
| | - Rui Wang
- Chemistry and Pharmacy Experimental Teaching Center, Guangdong Medical University, Zhanjiang, China
| | - Yuyu Liang
- Guangdong Key Laboratory for Research and Development of Natural Drug, Department of Pharmacology, Guangdong Medical University, Zhanjiang, China
| | - Guangjie Zhuang
- The First School of Clinical Medical, Guangdong Medical University, Zhanjiang, China
| | - Xuelin Chen
- Guangdong Key Laboratory for Research and Development of Natural Drug, Department of Pharmacology, Guangdong Medical University, Zhanjiang, China
| | - Shiying Luo
- Guangdong Key Laboratory for Research and Development of Natural Drug, Department of Pharmacology, Guangdong Medical University, Zhanjiang, China
| | - Yuliang Cai
- Department of Respiratory Medicine, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China
| | - Chuge Song
- Department of Respiratory Medicine, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China
| | - Lingna Liu
- Guangdong Key Laboratory for Research and Development of Natural Drug, Department of Pharmacology, Guangdong Medical University, Zhanjiang, China
| | - Luoyang Ma
- Guangdong Key Laboratory for Research and Development of Natural Drug, Department of Pharmacology, Guangdong Medical University, Zhanjiang, China
| | - Weimin Yao
- Department of Respiratory Medicine, The Second Affiliated Hospital of Guangdong Medical University, Zhanjiang, China
| | - Yanzhi Liu
- Guangdong Key Laboratory for Research and Development of Natural Drug, Department of Pharmacology, Guangdong Medical University, Zhanjiang, China
- Zhanjiang Central Hospital, Guangdong Medical University, Zhanjiang, China
| | - Liao Cui
- Guangdong Key Laboratory for Research and Development of Natural Drug, Department of Pharmacology, Guangdong Medical University, Zhanjiang, China
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Srivastava S, Siddiqui S, Singh S, Chowdhury S, Upadhyay V, Sethi A, Kumar Trivedi A. Dexamethasone induces cancer mitigation and irreversible senescence in lung cancer cells via damaging cortical actin and sustained hyperphosphorylation of pRb. Steroids 2023; 198:109269. [PMID: 37394085 DOI: 10.1016/j.steroids.2023.109269] [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: 03/22/2023] [Revised: 06/27/2023] [Accepted: 06/29/2023] [Indexed: 07/04/2023]
Abstract
Activation of the glucocorticoid receptors by its cognate ligand, dexamethasone (DEX) is commonly used as an adjuvant treatment in solid tumors. However, its direct effect on cancerous phenotype is not fully understood. We explored the effect and molecular mechanisms of DEX action in lung cancer. In in vitro experiments, DEX treatment causes decrease in migration, invasion and colony formation ability of A549 cells even at lower doses. DEX also decreased adhesion of A549 cells by reducing the formation of cortical actin. Treatment with RU486, a GR antagonist, indicated that these effects are partially mediated through GR. Further; DEX induces G0/G1 arrest of A549 cells. Mechanistically, DEX induces expression of both CDK inhibitors (p21Cip1, p27Kip1) and cyclin-dependent kinases (CDK4, CDK6). Due to this compensatory activation of CDKs and CDKIs, DEX induces the hyper phosphorylation state of Rb protein (pRb) leading to irreversible senescence as confirmed by β-gal staining. Next, in clinical dataset of NSCLC (Non-small cell lung cancer), GR was lowly expressed in cancer patients as compared to the normal group, where higher expression of GR led to higher overall survival of NSCLC indicating for a protective role of GR. Interestingly, when combined with chemotherapeutic agents, DEX can modulate the drug-sensitivity of cells. Taken together, these data indicate that DEX through GR activation may suppress tumor growth by decreasing proliferation and inducing irreversible senescence and combination of standard chemotherapy and DEX can be a potential treatment for NSCLC.
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Affiliation(s)
- Swati Srivastava
- Division of Cancer Biology, CSIR-Central Drug Research Institute, Sector-10, Jankipuram Extension, Sitapur Road, Lucknow 226031, UP, India
| | - Shumaila Siddiqui
- Division of Cancer Biology, CSIR-Central Drug Research Institute, Sector-10, Jankipuram Extension, Sitapur Road, Lucknow 226031, UP, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Samradhi Singh
- Division of Cancer Biology, CSIR-Central Drug Research Institute, Sector-10, Jankipuram Extension, Sitapur Road, Lucknow 226031, UP, India
| | - Sangita Chowdhury
- Division of Cancer Biology, CSIR-Central Drug Research Institute, Sector-10, Jankipuram Extension, Sitapur Road, Lucknow 226031, UP, India
| | - Vishal Upadhyay
- Division of Cancer Biology, CSIR-Central Drug Research Institute, Sector-10, Jankipuram Extension, Sitapur Road, Lucknow 226031, UP, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Arppita Sethi
- Division of Cancer Biology, CSIR-Central Drug Research Institute, Sector-10, Jankipuram Extension, Sitapur Road, Lucknow 226031, UP, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Arun Kumar Trivedi
- Division of Cancer Biology, CSIR-Central Drug Research Institute, Sector-10, Jankipuram Extension, Sitapur Road, Lucknow 226031, UP, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India.
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8
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Identification and Validation of Potential Ferroptosis-Related Genes in Glucocorticoid-Induced Osteonecrosis of the Femoral Head. MEDICINA (KAUNAS, LITHUANIA) 2023; 59:medicina59020297. [PMID: 36837498 PMCID: PMC9962586 DOI: 10.3390/medicina59020297] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Revised: 01/27/2023] [Accepted: 02/02/2023] [Indexed: 02/09/2023]
Abstract
Background and Objectives. Glucocorticoid-induced osteonecrosis of the femoral head (GIONFH) is a serve complication of long-term administration of glucocorticoids. Previous experimental studies have shown that ferroptosis might be involved in the pathological process of GIONFH. The purpose of this study is to identify the ferroptosis-related genes and pathways of GIONFH by bioinformatics to further illustrate the mechanism of ferroptosis in SONFH through bioinformatics analysis. Materials and Methods. The GSE123568 mRNA expression profile dataset, including 30 GIONFH samples and 10 non-GIONFH samples, was downloaded from the Gene Expression Omnibus (GEO) database. Ferroptosis-related genes were obtained from the FerrDb database. First, differentially expressed genes (DEGs) were identified between the serum samples from GIONFH cases and those from controls. Ferroptosis-related DEGs were obtained from the intersection of ferroptosis-related genes and DEGs. Only ferroptosis DEGs were used for all analyses. Then, we conducted a Kyoto encyclopedia of genome (KEGG) and gene ontology (GO) pathway enrichment analysis. We constructed a protein-protein interaction (PPI) network to screen out hub genes. Additionally, the expression levels of the hub genes were validated in an independent dataset GSE10311. Results. A total of 27 ferroptosis-related DEGs were obtained between the peripheral blood samples of GIONFH cases and non-GIONFH controls. Then, GO, and KEGG pathway enrichment analysis revealed that ferroptosis-related DEGs were mainly enriched in the regulation of the apoptotic process, oxidation-reduction process, and cell redox homeostasis, as well as HIF-1, TNF, FoxO signaling pathways, and osteoclast differentiation. Eight hub genes, including TLR4, PTGS2, SNCA, MAPK1, CYBB, SLC2A1, TXNIP, and MAP3K5, were identified by PPI network analysis. The expression levels of TLR4, TXNIP and MAP3K5 were further validated in the dataset GSE10311. Conclusion. A total of 27 ferroptosis-related DEGs involved in GIONFH were identified via bioinformatics analysis. TLR4, TXNIP, and MAP3K5 might serve as potential biomarkers and drug targets for GIONFH.
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9
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Bensreti H, Alhamad DW, Gonzalez AM, Pizarro-Mondesir M, Bollag WB, Isales CM, McGee-Lawrence ME. Update on the Role of Glucocorticoid Signaling in Osteoblasts and Bone Marrow Adipocytes During Aging. Curr Osteoporos Rep 2023; 21:32-44. [PMID: 36564571 PMCID: PMC9936962 DOI: 10.1007/s11914-022-00772-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 11/15/2022] [Indexed: 12/25/2022]
Abstract
PURPOSE OF REVIEW Bone marrow adipose tissue (BMAT) in the skeleton likely plays a variety of physiological and pathophysiological roles that are not yet fully understood. In elucidating the complex relationship between bone and BMAT, glucocorticoids (GCs) are positioned to play a key role, as they have been implicated in the differentiation of bone marrow mesenchymal stem cells (BMSCs) between osteogenic and adipogenic lineages. The purpose of this review is to illuminate aspects of both endogenous and exogenous GC signaling, including the influence of GC receptors, in mechanisms of bone aging including relationships to BMAT. RECENT FINDINGS Harmful effects of GCs on bone mass involve several cellular pathways and events that can include BMSC differentiation bias toward adipogenesis and the influence of mature BMAT on bone remodeling through crosstalk. Interestingly, BMAT involvement remains poorly explored in GC-induced osteoporosis and warrants further investigation. This review provides an update on the current understanding of the role of glucocorticoids in the biology of osteoblasts and bone marrow adipocytes (BMAds).
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Affiliation(s)
- Husam Bensreti
- Department of Cellular Biology and Anatomy, Medical College of Georgia, Augusta University, Augusta, GA, USA
| | - Dima W Alhamad
- Department of Cellular Biology and Anatomy, Medical College of Georgia, Augusta University, Augusta, GA, USA
| | - Alejandro Marrero Gonzalez
- Department of Cellular Biology and Anatomy, Medical College of Georgia, Augusta University, Augusta, GA, USA
| | - Manuel Pizarro-Mondesir
- Department of Cellular Biology and Anatomy, Medical College of Georgia, Augusta University, Augusta, GA, USA
| | - Wendy B Bollag
- Department of Physiology, Medical College of Georgia, Augusta University, Augusta, GA, USA
- Charlie Norwood VA Medical Center, Augusta, GA, USA
| | - Carlos M Isales
- Department of Neuroscience and Regenerative Medicine, Medical College of Georgia, Augusta University, Augusta, GA, USA
- Department of Orthopaedic Surgery, Medical College of Georgia, Augusta University, Augusta, GA, USA
- Department of Medicine, Medical College of Georgia, Augusta University, Augusta, GA, USA
| | - Meghan E McGee-Lawrence
- Department of Cellular Biology and Anatomy, Medical College of Georgia, Augusta University, Augusta, GA, USA.
- Department of Orthopaedic Surgery, Medical College of Georgia, Augusta University, Augusta, GA, USA.
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10
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Stubbs FE, Flynn BP, Rivers CA, Birnie MT, Herman A, Swinstead EE, Baek S, Fang H, Temple J, Carroll JS, Hager GL, Lightman SL, Conway-Campbell BL. Identification of a novel GR-ARID1a-P53BP1 protein complex involved in DNA damage repair and cell cycle regulation. Oncogene 2022; 41:5347-5360. [PMID: 36344675 PMCID: PMC9734058 DOI: 10.1038/s41388-022-02516-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Revised: 10/02/2022] [Accepted: 10/17/2022] [Indexed: 11/09/2022]
Abstract
ARID1a (BAF250), a component of human SWI/SNF chromatin remodeling complexes, is frequently mutated across numerous cancers, and its loss of function has been putatively linked to glucocorticoid resistance. Here, we interrogate the impact of siRNA knockdown of ARID1a compared to a functional interference approach in the HeLa human cervical cancer cell line. We report that ARID1a knockdown resulted in a significant global decrease in chromatin accessibility in ATAC-Seq analysis, as well as affecting a subset of genome-wide GR binding sites determined by analyzing GR ChIP-Seq data. Interestingly, the specific effects on gene expression were limited to a relatively small subset of glucocorticoid-regulated genes, notably those involved in cell cycle regulation and DNA repair. The vast majority of glucocorticoid-regulated genes were largely unaffected by ARID1a knockdown or functional interference, consistent with a more specific role for ARID1a in glucocorticoid function than previously speculated. Using liquid chromatography-mass spectrometry, we have identified a chromatin-associated protein complex comprising GR, ARID1a, and several DNA damage repair proteins including P53 binding protein 1 (P53BP1), Poly(ADP-Ribose) Polymerase 1 (PARP1), DNA damage-binding protein 1 (DDB1), DNA mismatch repair protein MSH6 and splicing factor proline and glutamine-rich protein (SFPQ), as well as the histone acetyltransferase KAT7, an epigenetic regulator of steroid-dependent transcription, DNA damage repair and cell cycle regulation. Not only was this protein complex ablated with both ARID1a knockdown and functional interference, but spontaneously arising DNA damage was also found to accumulate in a manner consistent with impaired DNA damage repair mechanisms. Recovery from dexamethasone-dependent cell cycle arrest was also significantly impaired. Taken together, our data demonstrate that although glucocorticoids can still promote cell cycle arrest in the absence of ARID1a, the purpose of this arrest to allow time for DNA damage repair is hindered.
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Affiliation(s)
- Felicity E Stubbs
- Henry Wellcome Laboratories for Integrative Neuroscience and Endocrinology, Translational Health Sciences, Faculty of Health Sciences, University of Bristol, Dorothy Hodgkin Building, Whitson Street, Bristol, BS1 3NY, UK
- Laboratory of Receptor Biology and Gene Expression, The National Cancer Institute, US National Institutes of Health, 41 Medlars Drive, Bethesda, MD, 20892, USA
| | - Benjamin P Flynn
- Henry Wellcome Laboratories for Integrative Neuroscience and Endocrinology, Translational Health Sciences, Faculty of Health Sciences, University of Bristol, Dorothy Hodgkin Building, Whitson Street, Bristol, BS1 3NY, UK
| | - Caroline A Rivers
- Henry Wellcome Laboratories for Integrative Neuroscience and Endocrinology, Translational Health Sciences, Faculty of Health Sciences, University of Bristol, Dorothy Hodgkin Building, Whitson Street, Bristol, BS1 3NY, UK
| | - Matthew T Birnie
- Henry Wellcome Laboratories for Integrative Neuroscience and Endocrinology, Translational Health Sciences, Faculty of Health Sciences, University of Bristol, Dorothy Hodgkin Building, Whitson Street, Bristol, BS1 3NY, UK
| | - Andrew Herman
- Flow Cytometry Facility, Faculty of Life Sciences, School of Cellular & Molecular Medicine, Biomedical Sciences Building, University of Bristol, Bristol, BS8 1TD, UK
| | - Erin E Swinstead
- Laboratory of Receptor Biology and Gene Expression, The National Cancer Institute, US National Institutes of Health, 41 Medlars Drive, Bethesda, MD, 20892, USA
| | - Songjoon Baek
- Laboratory of Receptor Biology and Gene Expression, The National Cancer Institute, US National Institutes of Health, 41 Medlars Drive, Bethesda, MD, 20892, USA
| | - Hai Fang
- Shanghai Institute of Hematology, State Key Laboratory of Medical Genomics, National Research Center for Translational Medicine at Shanghai, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Jillian Temple
- Cancer Research UK Cambridge Institute, University of Cambridge, Robinson Way, Cambridge, CB2 0RE, UK
| | - Jason S Carroll
- Cancer Research UK Cambridge Institute, University of Cambridge, Robinson Way, Cambridge, CB2 0RE, UK
| | - Gordon L Hager
- Laboratory of Receptor Biology and Gene Expression, The National Cancer Institute, US National Institutes of Health, 41 Medlars Drive, Bethesda, MD, 20892, USA
| | - Stafford L Lightman
- Henry Wellcome Laboratories for Integrative Neuroscience and Endocrinology, Translational Health Sciences, Faculty of Health Sciences, University of Bristol, Dorothy Hodgkin Building, Whitson Street, Bristol, BS1 3NY, UK
| | - Becky L Conway-Campbell
- Henry Wellcome Laboratories for Integrative Neuroscience and Endocrinology, Translational Health Sciences, Faculty of Health Sciences, University of Bristol, Dorothy Hodgkin Building, Whitson Street, Bristol, BS1 3NY, UK.
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11
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Tocotrienol as a Protecting Agent against Glucocorticoid-Induced Osteoporosis: A Mini Review of Potential Mechanisms. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27185862. [PMID: 36144598 PMCID: PMC9506150 DOI: 10.3390/molecules27185862] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/31/2022] [Revised: 09/03/2022] [Accepted: 09/08/2022] [Indexed: 11/18/2022]
Abstract
Glucocorticoid-induced osteogenic dysfunction is the main pathologyical mechanism underlying the development of glucocorticoid-induced osteoporosis. Glucocorticoids promote adipogenic differentiation and osteoblast apoptosis through various pathways. Various ongoing studies are exploring the potential of natural products in preventing glucocorticoid-induced osteoporosis. Preclinical studies have consistently shown the bone protective effects of tocotrienol through its antioxidant and anabolic effects. This review aims to summarise the potential mechanisms of tocotrienol in preventing glucocorticoid-induced osteoporosis based on existing in vivo and in vitro evidence. The current literature showed that tocotrienol prevents oxidative damage on osteoblasts exposed to high levels of glucocorticoids. Tocotrienol reduces lipid peroxidation and increases oxidative stress enzyme activities. The reduction in oxidative stress protects the osteoblasts and preserves the bone microstructure and biomechanical strength of glucocorticoid-treated animals. In other animal models, tocotrienol has been shown to activate the Wnt/β-catenin pathway and lower the RANKL/OPG ratio, which are the targets of glucocorticoids. In conclusion, tocotrienol enhances osteogenic differentiation and bone formation in glucocorticoid-treated osteoblasts while improving structural integrity in glucocorticoid-treated rats. This is achieved by preventing oxidative stress and osteoblast apoptosis. However, these preclinical results should be validated in a randomised controlled trial.
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12
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Lv B, Cheng Z, Yu Y, Chen Y, Gan W, Li S, Zhao K, Yang C, Zhang Y. Therapeutic perspectives of exosomes in glucocorticoid-induced osteoarthrosis. Front Surg 2022; 9:836367. [PMID: 36034358 PMCID: PMC9405187 DOI: 10.3389/fsurg.2022.836367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Accepted: 07/08/2022] [Indexed: 11/17/2022] Open
Abstract
Exosomes are widely involved in a variety of physiological and pathological processes. These important roles are also hidden in the physiological processes related to bone. Chondrocytes, osteoblasts, synovial fibroblasts, and bone marrow mesenchymal stem cells produce and secrete exosomes, thereby affecting the biology process of target cells. Furthermore, in the primary pathogenesis of osteoarthrosis induced by steroid hormones, mainly involve glucocorticoid (GC), the exosomes have also widely participated. Therefore, exosomes may also play an important role in glucocorticoid-induced osteoarthrosis and serve as a promising treatment for early intervention of osteoarthrosis in addition to playing a regulatory role in malignant tumors. This review summarizes the previous results on this direction, systematically combs the role and therapeutic potential of exosomes in GC-induced osteoarthrosis, discusses the potential role of exosomes in the treatment and prevention of GC-induced osteoarthrosis, and reveals the current challenges we confronted.
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Affiliation(s)
- Bin Lv
- Correspondence: Yukun ZhangCao Yang Kangcheng Zhao Bin Lv
| | | | | | | | | | | | - Kangcheng Zhao
- Correspondence: Yukun ZhangCao Yang Kangcheng Zhao Bin Lv
| | - Cao Yang
- Correspondence: Yukun ZhangCao Yang Kangcheng Zhao Bin Lv
| | - Yukun Zhang
- Correspondence: Yukun ZhangCao Yang Kangcheng Zhao Bin Lv
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13
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Jeong S, Chung Y, Park S, Lee S, Choi N, Park JK. Combined treatment of ginsenoside Rg2 and piceatannol mixture reduces the apoptosis and DNA damage induced by UVB in HaCaT cells. Mol Cell Toxicol 2022. [DOI: 10.1007/s13273-022-00238-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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14
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Zhang M, Chen D, Zeng N, Liu Z, Chen X, Xiao H, Xiao L, Liu Z, Dong Y, Zheng J. Hesperidin Ameliorates Dexamethasone-Induced Osteoporosis by Inhibiting p53. Front Cell Dev Biol 2022; 10:820922. [PMID: 35478958 PMCID: PMC9035638 DOI: 10.3389/fcell.2022.820922] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Accepted: 03/16/2022] [Indexed: 01/02/2023] Open
Abstract
Osteoporosis is one of the most frequent skeletal disorders and a major cause of morbidity and mortality in the expanding aging population. Evidence suggests that hesperidin may have a therapeutic impact on osteoporosis. Nevertheless, little is known about the role of hesperidin in the development of osteoporosis. Bioinformatics analyses were carried out to explore the functions and possible molecular mechanisms by which hesperidin regulates osteogenic differentiation. In the present study, we screened and harvested 12 KEGG pathways that were shared by hesperidin-targeted genes and osteoporosis. The p53 signaling pathway was considered to be a key mechanism. Our in vitro results showed that hesperidin partially reversed dexamethasone-induced inhibition of osteogenic differentiation by suppressing the activation of p53, and suggest that hesperidin may be a promising candidate for the treatment against dexamethasone-induced osteoporosis.
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Affiliation(s)
- Meng Zhang
- Department of Orthopedics, Henan Provincial People’s Hospital, People’s Hospital of Zhengzhou University, Henan University People’s Hospital, Zhengzhou, China
- Microbiome Laboratory, Henan Provincial People’s Hospital, People’s Hospital of Zhengzhou University, Zhengzhou, China
| | - Delong Chen
- Department of Orthopaedics, Erasmus University Medical Center, Rotterdam, Netherlands
| | - Ning Zeng
- Department of Plastic and Cosmetic Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Zhendong Liu
- Microbiome Laboratory, Henan Provincial People’s Hospital, People’s Hospital of Zhengzhou University, Zhengzhou, China
- Department of Surgery of Spine and Spinal Cord, Henan Provincial People’s Hospital, People’s Hospital of Zhengzhou University, Henan University People’s Hospital, Zhengzhou, China
| | - Xiao Chen
- Department of Orthopedics, Henan Provincial People’s Hospital, People’s Hospital of Zhengzhou University, Henan University People’s Hospital, Zhengzhou, China
- Microbiome Laboratory, Henan Provincial People’s Hospital, People’s Hospital of Zhengzhou University, Zhengzhou, China
| | - Hefang Xiao
- Department of Orthopedics, Henan Provincial People’s Hospital, People’s Hospital of Zhengzhou University, Henan University People’s Hospital, Zhengzhou, China
- Microbiome Laboratory, Henan Provincial People’s Hospital, People’s Hospital of Zhengzhou University, Zhengzhou, China
| | - Likang Xiao
- Department of Orthopedics, Henan Provincial People’s Hospital, People’s Hospital of Zhengzhou University, Henan University People’s Hospital, Zhengzhou, China
- Microbiome Laboratory, Henan Provincial People’s Hospital, People’s Hospital of Zhengzhou University, Zhengzhou, China
| | - Zeming Liu
- Department of Plastic and Cosmetic Surgery, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yonghui Dong
- Department of Orthopedics, Henan Provincial People’s Hospital, People’s Hospital of Zhengzhou University, Henan University People’s Hospital, Zhengzhou, China
- Microbiome Laboratory, Henan Provincial People’s Hospital, People’s Hospital of Zhengzhou University, Zhengzhou, China
| | - Jia Zheng
- Department of Orthopedics, Henan Provincial People’s Hospital, People’s Hospital of Zhengzhou University, Henan University People’s Hospital, Zhengzhou, China
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15
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Effect of Glucocorticosteroids in Diamond-Blackfan Anaemia: Maybe Not as Elusive as It Seems. Int J Mol Sci 2022; 23:ijms23031886. [PMID: 35163808 PMCID: PMC8837118 DOI: 10.3390/ijms23031886] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2021] [Revised: 02/01/2022] [Accepted: 02/05/2022] [Indexed: 12/22/2022] Open
Abstract
Diamond-Blackfan anaemia (DBA) is a red blood cell aplasia that in the majority of cases is associated with ribosomal protein (RP) aberrations. However, the mechanism by which this disorder leads to such a specific phenotype remains unclear. Even more elusive is the reason why non-specific agents such as glucocorticosteroids (GCs), also known as glucocorticoids, are an effective therapy for DBA. In this review, we (1) explore why GCs are successful in DBA treatment, (2) discuss the effect of GCs on erythropoiesis, and (3) summarise the GC impact on crucial pathways deregulated in DBA. Furthermore, we show that GCs do not regulate DBA erythropoiesis via a single mechanism but more likely via several interdependent pathways.
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Gado M, Baschant U, Hofbauer LC, Henneicke H. Bad to the Bone: The Effects of Therapeutic Glucocorticoids on Osteoblasts and Osteocytes. Front Endocrinol (Lausanne) 2022; 13:835720. [PMID: 35432217 PMCID: PMC9008133 DOI: 10.3389/fendo.2022.835720] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Accepted: 02/10/2022] [Indexed: 02/06/2023] Open
Abstract
Despite the continued development of specialized immunosuppressive therapies in the form of monoclonal antibodies, glucocorticoids remain a mainstay in the treatment of rheumatological and auto-inflammatory disorders. Therapeutic glucocorticoids are unmatched in the breadth of their immunosuppressive properties and deliver their anti-inflammatory effects at unparalleled speed. However, long-term exposure to therapeutic doses of glucocorticoids decreases bone mass and increases the risk of fractures - particularly in the spine - thus limiting their clinical use. Due to the abundant expression of glucocorticoid receptors across all skeletal cell populations and their respective progenitors, therapeutic glucocorticoids affect skeletal quality through a plethora of cellular targets and molecular mechanisms. However, recent evidence from rodent studies, supported by clinical data, highlights the considerable role of cells of the osteoblast lineage in the pathogenesis of glucocorticoid-induced osteoporosis: it is now appreciated that cells of the osteoblast lineage are key targets of therapeutic glucocorticoids and have an outsized role in mediating their undesirable skeletal effects. As part of this article, we review the molecular mechanisms underpinning the detrimental effects of supraphysiological levels of glucocorticoids on cells of the osteoblast lineage including osteocytes and highlight the clinical implications of recent discoveries in the field.
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Affiliation(s)
- Manuel Gado
- Center for Regenerative Therapies TU Dresden, Technische Universität Dresden, Dresden, Germany
| | - Ulrike Baschant
- Department of Medicine III, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
- Center for Healthy Aging, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Lorenz C. Hofbauer
- Center for Regenerative Therapies TU Dresden, Technische Universität Dresden, Dresden, Germany
- Department of Medicine III, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
- Center for Healthy Aging, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Holger Henneicke
- Center for Regenerative Therapies TU Dresden, Technische Universität Dresden, Dresden, Germany
- Department of Medicine III, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
- Center for Healthy Aging, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
- *Correspondence: Holger Henneicke,
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17
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Cellular Senescence in Adrenocortical Biology and Its Disorders. Cells 2021; 10:cells10123474. [PMID: 34943980 PMCID: PMC8699888 DOI: 10.3390/cells10123474] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Revised: 11/26/2021] [Accepted: 12/06/2021] [Indexed: 01/10/2023] Open
Abstract
Cellular senescence is considered a physiological process along with aging and has recently been reported to be involved in the pathogenesis of many age-related disorders. Cellular senescence was first found in human fibroblasts and gradually explored in many other organs, including endocrine organs. The adrenal cortex is essential for the maintenance of blood volume, carbohydrate metabolism, reaction to stress and the development of sexual characteristics. Recently, the adrenal cortex was reported to harbor some obvious age-dependent features. For instance, the circulating levels of aldosterone and adrenal androgen gradually descend, whereas those of cortisol increase with aging. The detailed mechanisms have remained unknown, but cellular senescence was considered to play an essential role in age-related changes of the adrenal cortex. Recent studies have demonstrated that the senescent phenotype of zona glomerulosa (ZG) acts in association with reduced aldosterone production in both physiological and pathological aldosterone-producing cells, whereas senescent cortical-producing cells seemed not to have a suppressed cortisol-producing ability. In addition, accumulated lipofuscin formation, telomere shortening and cellular atrophy in zona reticularis cells during aging may account for the age-dependent decline in adrenal androgen levels. In adrenocortical disorders, including both aldosterone-producing adenoma (APA) and cortisol-producing adenoma (CPA), different cellular subtypes of tumor cells presented divergent senescent phenotypes, whereby compact cells in both APA and CPA harbored more senescent phenotypes than clear cells. Autonomous cortisol production from CPA reinforced a local cellular senescence that was more severe than that in APA. Adrenocortical carcinoma (ACC) was also reported to harbor oncogene-induced senescence, which compensatorily follows carcinogenesis and tumor progress. Adrenocortical steroids can induce not only a local senescence but also a periphery senescence in many other tissues. Therefore, herein, we systemically review the recent advances related to cellular senescence in adrenocortical biology and its associated disorders.
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18
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Kubra KT, Uddin MA, Akhter MS, Leo AJ, Siejka A, Barabutis N. P53 mediates the protective effects of metformin in inflamed lung endothelial cells. Int Immunopharmacol 2021; 101:108367. [PMID: 34794886 DOI: 10.1016/j.intimp.2021.108367] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Revised: 10/26/2021] [Accepted: 11/09/2021] [Indexed: 02/08/2023]
Abstract
The endothelial barrier regulates interstitial fluid homeostasis by transcellular and paracellular means. Dysregulation of this semipermeable barrier may lead to vascular leakage, edema, and accumulation of pro-inflammatory cytokines, inducing microvascular hyperpermeability. Investigating the molecular pathways involved in those events will most probably provide novel therapeutic possibilities in pathologies related to endothelial barrier dysfunction. Metformin (MET) is an anti-diabetic drug, opposes malignancies, inhibits cellular transformation, and promotes cardiovascular protection. In the current study, we assess the protective effects of MET in LPS-induced lung endothelial barrier dysfunction and evaluate the role of P53 in mediating the beneficial effects of MET in the vasculature. We revealed that this biguanide (MET) opposes the LPS-induced dysregulation of the lung microvasculature, since it suppressed the formation of filamentous actin stress fibers, and deactivated cofilin. To investigate whether P53 is involved in those phenomena, we employed the fluorescein isothiocyanate (FITC) - dextran permeability assay, to measure paracellular permeability. Our observations suggest that P53 inhibition increases paracellular permeability, and MET prevents those effects. Our results contribute towards the understanding of the lung endothelium and reveal the significant role of P53 in the MET-induced barrier enhancement.
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Affiliation(s)
- Khadeja-Tul Kubra
- School of Basic Pharmaceutical and Toxicological Sciences, College of Pharmacy, University of Louisiana Monroe, Monroe, LA 71201, USA
| | - Mohammad A Uddin
- School of Basic Pharmaceutical and Toxicological Sciences, College of Pharmacy, University of Louisiana Monroe, Monroe, LA 71201, USA
| | - Mohammad S Akhter
- School of Basic Pharmaceutical and Toxicological Sciences, College of Pharmacy, University of Louisiana Monroe, Monroe, LA 71201, USA
| | - Antoinette J Leo
- School of Basic Pharmaceutical and Toxicological Sciences, College of Pharmacy, University of Louisiana Monroe, Monroe, LA 71201, USA
| | - Agnieszka Siejka
- Department of Clinical Endocrinology, Medical University of Lodz, Lodz, Poland
| | - Nektarios Barabutis
- School of Basic Pharmaceutical and Toxicological Sciences, College of Pharmacy, University of Louisiana Monroe, Monroe, LA 71201, USA.
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Patrício P, Mateus-Pinheiro A, Machado-Santos AR, Alves ND, Correia JS, Morais M, Bessa JM, Rodrigues AJ, Sousa N, Pinto L. Cell Cycle Regulation of Hippocampal Progenitor Cells in Experimental Models of Depression and after Treatment with Fluoxetine. Int J Mol Sci 2021; 22:ijms222111798. [PMID: 34769232 PMCID: PMC8584049 DOI: 10.3390/ijms222111798] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Revised: 10/26/2021] [Accepted: 10/27/2021] [Indexed: 11/16/2022] Open
Abstract
Changes in adult hippocampal cell proliferation and genesis have been largely implicated in depression and antidepressant action, though surprisingly, the underlying cell cycle mechanisms are largely undisclosed. Using both an in vivo unpredictable chronic mild stress (uCMS) rat model of depression and in vitro rat hippocampal-derived neurosphere culture approaches, we aimed to unravel the cell cycle mechanisms regulating hippocampal cell proliferation and genesis in depression and after antidepressant treatment. We show that the hippocampal dentate gyrus (hDG) of uCMS animals have less proliferating cells and a decreased proportion of cells in the G2/M phase, suggesting a G1 phase arrest; this is accompanied by decreased levels of cyclin D1, E, and A expression. Chronic fluoxetine treatment reversed the G1 phase arrest and promoted an up-regulation of cyclin E. In vitro, dexamethasone (DEX) decreased cell proliferation, whereas the administration of serotonin (5-HT) reversed it. DEX also induced a G1-phase arrest and decreased cyclin D1 and D2 expression levels while increasing p27. Additionally, 5-HT treatment could partly reverse the G1-phase arrest and restored cyclin D1 expression. We suggest that the anti-proliferative actions of chronic stress in the hDG result from a glucocorticoid-mediated G1-phase arrest in the progenitor cells that is partly mediated by decreased cyclin D1 expression which may be overcome by antidepressant treatment.
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Affiliation(s)
- Patrícia Patrício
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Campus Gualtar, 4710-057 Braga, Portugal; (A.M.-P.); (A.R.M.-S.); (N.D.A.); (J.S.C.); (M.M.); (J.M.B.); (A.J.R.); (N.S.)
- ICVS/3B’s—PT Government Associate Laboratory, 4805-017 Braga/Guimarães, Portugal
- B’nML—Behavioral &Molecular Lab, 4715-057 Braga, Portugal
- Correspondence: (P.P.); (L.P.)
| | - António Mateus-Pinheiro
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Campus Gualtar, 4710-057 Braga, Portugal; (A.M.-P.); (A.R.M.-S.); (N.D.A.); (J.S.C.); (M.M.); (J.M.B.); (A.J.R.); (N.S.)
- ICVS/3B’s—PT Government Associate Laboratory, 4805-017 Braga/Guimarães, Portugal
- B’nML—Behavioral &Molecular Lab, 4715-057 Braga, Portugal
| | - Ana Rita Machado-Santos
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Campus Gualtar, 4710-057 Braga, Portugal; (A.M.-P.); (A.R.M.-S.); (N.D.A.); (J.S.C.); (M.M.); (J.M.B.); (A.J.R.); (N.S.)
- ICVS/3B’s—PT Government Associate Laboratory, 4805-017 Braga/Guimarães, Portugal
| | - Nuno Dinis Alves
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Campus Gualtar, 4710-057 Braga, Portugal; (A.M.-P.); (A.R.M.-S.); (N.D.A.); (J.S.C.); (M.M.); (J.M.B.); (A.J.R.); (N.S.)
- ICVS/3B’s—PT Government Associate Laboratory, 4805-017 Braga/Guimarães, Portugal
- Department of Psychiatry, New York State Psychiatric Institute, Columbia University, New York, NY 10032, USA
| | - Joana Sofia Correia
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Campus Gualtar, 4710-057 Braga, Portugal; (A.M.-P.); (A.R.M.-S.); (N.D.A.); (J.S.C.); (M.M.); (J.M.B.); (A.J.R.); (N.S.)
- ICVS/3B’s—PT Government Associate Laboratory, 4805-017 Braga/Guimarães, Portugal
| | - Mónica Morais
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Campus Gualtar, 4710-057 Braga, Portugal; (A.M.-P.); (A.R.M.-S.); (N.D.A.); (J.S.C.); (M.M.); (J.M.B.); (A.J.R.); (N.S.)
- ICVS/3B’s—PT Government Associate Laboratory, 4805-017 Braga/Guimarães, Portugal
| | - João Miguel Bessa
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Campus Gualtar, 4710-057 Braga, Portugal; (A.M.-P.); (A.R.M.-S.); (N.D.A.); (J.S.C.); (M.M.); (J.M.B.); (A.J.R.); (N.S.)
- ICVS/3B’s—PT Government Associate Laboratory, 4805-017 Braga/Guimarães, Portugal
- B’nML—Behavioral &Molecular Lab, 4715-057 Braga, Portugal
| | - Ana João Rodrigues
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Campus Gualtar, 4710-057 Braga, Portugal; (A.M.-P.); (A.R.M.-S.); (N.D.A.); (J.S.C.); (M.M.); (J.M.B.); (A.J.R.); (N.S.)
- ICVS/3B’s—PT Government Associate Laboratory, 4805-017 Braga/Guimarães, Portugal
| | - Nuno Sousa
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Campus Gualtar, 4710-057 Braga, Portugal; (A.M.-P.); (A.R.M.-S.); (N.D.A.); (J.S.C.); (M.M.); (J.M.B.); (A.J.R.); (N.S.)
- ICVS/3B’s—PT Government Associate Laboratory, 4805-017 Braga/Guimarães, Portugal
| | - Luísa Pinto
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Campus Gualtar, 4710-057 Braga, Portugal; (A.M.-P.); (A.R.M.-S.); (N.D.A.); (J.S.C.); (M.M.); (J.M.B.); (A.J.R.); (N.S.)
- ICVS/3B’s—PT Government Associate Laboratory, 4805-017 Braga/Guimarães, Portugal
- B’nML—Behavioral &Molecular Lab, 4715-057 Braga, Portugal
- Correspondence: (P.P.); (L.P.)
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Xie B, Zeng Z, Liao S, Zhou C, Wu L, Xu D. Kaempferol Ameliorates the Inhibitory Activity of Dexamethasone in the Osteogenesis of MC3T3-E1 Cells by JNK and p38-MAPK Pathways. Front Pharmacol 2021; 12:739326. [PMID: 34675808 PMCID: PMC8524096 DOI: 10.3389/fphar.2021.739326] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2021] [Accepted: 09/21/2021] [Indexed: 11/23/2022] Open
Abstract
Kaempferol has been reported to exhibit beneficial effect on the osteogenic differentiation in mesenchymal stem cells (MSC) and osteoblasts. In our previous study, dexamethasone (DEX) demonstrated inhibitory effect on MC3T3-E1 cells differentiation. In this study, we mainly explored the protective effect of kaempferol on the inhibitory activity of DEX in the osteogenesis of MC3T3-E1 cells. We found that kaempferol ameliorated the proliferation inhibition, cell cycle arrest, and cell apoptosis and increased the activity of alkaline phosphatase (ALP) and the mineralization in DEX-treated MC3T3-E1 cells. Kaempferol also significantly enhanced the expression of osterix (Osx) and runt-related transcription factor 2 (Runx2) in MC3T3-E1 cells treated with DEX. In addition, kaempferol attenuated DEX-induced reduction of cyclin D1 and Bcl-2 expression and elevation of p53 and Bax expression. Kaempferol also activated JNK and p38-MAPK pathways in DEX-treated MC3T3-E1 cells. Furthermore, kaempferol improved bone mineralization in DEX-induced bone damage in a zebrafish larvae model. These data suggested that kaempferol ameliorated the inhibitory activity of DEX in the osteogenesis of MC3T3-E1 cells by activating JNK and p38-MAPK signaling pathways. Kaempferol exhibited great potentials in developing new drugs for treating glucocorticoid-induced osteoporosis.
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Affiliation(s)
- Baocheng Xie
- Guangdong Key Laboratory for Research and Development of Natural Drugs, The Public Service Platform of South China Sea for R&D Marine Biomedicine Resources, Marine Biomedical Research Institute, Guangdong Medical University, Zhanjiang, China.,Department of Pharmacy, Affiliated Dongguan Hospital, Southern Medical University, Dongguan, China
| | - Zhanwei Zeng
- Guangdong Key Laboratory for Research and Development of Natural Drugs, The Public Service Platform of South China Sea for R&D Marine Biomedicine Resources, Marine Biomedical Research Institute, Guangdong Medical University, Zhanjiang, China.,Key Laboratory of Traditional Chinese Medicine and New Pharmacy Development, Guangdong Medical University, Dongguan, China
| | - Shiyi Liao
- Guangdong Key Laboratory for Research and Development of Natural Drugs, The Public Service Platform of South China Sea for R&D Marine Biomedicine Resources, Marine Biomedical Research Institute, Guangdong Medical University, Zhanjiang, China.,Key Laboratory of Traditional Chinese Medicine and New Pharmacy Development, Guangdong Medical University, Dongguan, China
| | - Chenhui Zhou
- School of Nursing, Guangdong Medical University, Dongguan, China
| | - Longhuo Wu
- College of Pharmacy, Gannan Medical University, Ganzhou, China
| | - Daohua Xu
- Guangdong Key Laboratory for Research and Development of Natural Drugs, The Public Service Platform of South China Sea for R&D Marine Biomedicine Resources, Marine Biomedical Research Institute, Guangdong Medical University, Zhanjiang, China.,Key Laboratory of Traditional Chinese Medicine and New Pharmacy Development, Guangdong Medical University, Dongguan, China
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21
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Yang RZ, Xu WN, Zheng HL, Zheng XF, Li B, Jiang LS, Jiang SD. Exosomes derived from vascular endothelial cells antagonize glucocorticoid-induced osteoporosis by inhibiting ferritinophagy with resultant limited ferroptosis of osteoblasts. J Cell Physiol 2021; 236:6691-6705. [PMID: 33590921 DOI: 10.1002/jcp.30331] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Revised: 02/01/2021] [Accepted: 02/03/2021] [Indexed: 02/06/2023]
Abstract
High dose and long-term steroid treatment can alter antioxidative ability and decrease the viability and function of osteoblasts, leading to osteoporosis and osteonecrosis. Ferroptosis, a new type of cell death characterized by excessive lipid peroxidation due to the downregulation of GPX4 and system Xc- , is involved in glucocorticoid-induced osteoporosis. Endothelial cell-secreted exosomes (EC-Exos) are important mediators of cell-to-cell communication and are involved in many physiological and pathological processes. However, the effect of EC-Exos on osteoblasts exposed to glucocorticoids has not been reported. Here, we explored the role of EC-Exos in glucocorticoid-induced osteoporosis. In vivo and in vitro experiments indicated that EC-Exos reversed the glucocorticoid-induced osteogenic inhibition of osteoblasts by inhibiting ferritinophagy-dependent ferroptosis.
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Affiliation(s)
- Run-Ze Yang
- Department of Clinic of Spine Center, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Wen-Ning Xu
- Department of Clinic of Spine Center, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Huo-Liang Zheng
- Department of Clinic of Spine Center, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xin-Feng Zheng
- Department of Clinic of Spine Center, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Bo Li
- Department of Clinic of Spine Center, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Lei-Sheng Jiang
- Department of Clinic of Spine Center, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Sheng-Dan Jiang
- Department of Clinic of Spine Center, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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22
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Peng CH, Lin WY, Yeh KT, Chen IH, Wu WT, Lin MD. The molecular etiology and treatment of glucocorticoid-induced osteoporosis. Tzu Chi Med J 2021; 33:212-223. [PMID: 34386357 PMCID: PMC8323641 DOI: 10.4103/tcmj.tcmj_233_20] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Revised: 11/19/2020] [Accepted: 12/30/2020] [Indexed: 12/30/2022] Open
Abstract
Glucocorticoid-induced osteoporosis (GIOP) is the most common form of secondary osteoporosis, accounting for 20% of osteoporosis diagnoses. Using glucocorticoids for >6 months leads to osteoporosis in 50% of patients, resulting in an increased risk of fracture and death. Osteoblasts, osteocytes, and osteoclasts work together to maintain bone homeostasis. When bone formation and resorption are out of balance, abnormalities in bone structure or function may occur. Excess glucocorticoids disrupt the bone homeostasis by promoting osteoclast formation and prolonging osteoclasts' lifespan, leading to an increase in bone resorption. On the other hand, glucocorticoids inhibit osteoblasts' formation and facilitate apoptosis of osteoblasts and osteocytes, resulting in a reduction of bone formation. Several signaling pathways, signaling modulators, endocrines, and cytokines are involved in the molecular etiology of GIOP. Clinically, adults ≥40 years of age using glucocorticoids chronically with a high fracture risk are considered to have medical intervention. In addition to vitamin D and calcium tablet supplementations, the major therapeutic options approved for GIOP treatment include antiresorption drug bisphosphonates, parathyroid hormone N-terminal fragment teriparatide, and the monoclonal antibody denosumab. The selective estrogen receptor modulator can only be used under specific condition for postmenopausal women who have GIOP but fail to the regular GIOP treatment or have specific therapeutic contraindications. In this review, we focus on the molecular etiology of GIOP and the molecular pharmacology of the therapeutic drugs used for GIOP treatment.
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Affiliation(s)
- Cheng-Huan Peng
- Department of Orthopedics, Hualien Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Hualien, Taiwan.,Institute of Medical Sciences, Tzu Chi University, Hualien, Taiwan.,School of Medicine, Tzu Chi University, Hualien, Taiwan
| | - Wen-Ying Lin
- Department of Orthopedics, Hualien Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Hualien, Taiwan
| | - Kuang-Ting Yeh
- Department of Orthopedics, Hualien Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Hualien, Taiwan.,School of Medicine, Tzu Chi University, Hualien, Taiwan
| | - Ing-Ho Chen
- Department of Orthopedics, Hualien Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Hualien, Taiwan.,School of Medicine, Tzu Chi University, Hualien, Taiwan
| | - Wen-Tien Wu
- Department of Orthopedics, Hualien Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Hualien, Taiwan.,Institute of Medical Sciences, Tzu Chi University, Hualien, Taiwan.,School of Medicine, Tzu Chi University, Hualien, Taiwan
| | - Ming-Der Lin
- Institute of Medical Sciences, Tzu Chi University, Hualien, Taiwan.,Department of Molecular Biology and Human Genetics, Tzu Chi University, Hualien, Taiwan
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23
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Paeoniflorin Attenuates Dexamethasone-Induced Apoptosis of Osteoblast Cells and Promotes Bone Formation via Regulating AKT/mTOR/Autophagy Signaling Pathway. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2021; 2021:6623464. [PMID: 33880124 PMCID: PMC8046541 DOI: 10.1155/2021/6623464] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/26/2020] [Revised: 02/21/2021] [Accepted: 03/26/2021] [Indexed: 01/04/2023]
Abstract
Paeoniflorin, a natural product derived from Paeonia lactiflora, possesses diverse pharmacological activities such as anti-inflammatory, antitumor, and antidiabetic effects. It has been reported for promoting osteoblastogenesis and inhibiting osteoclastogenesis. This study investigates the therapeutic effects of paeoniflorin in glucocorticoid-induced osteoporosis (GIOP) in vitro and in vivo. MC3T3-E1 cells were incubated with dexamethasone (DEX; 200 μM) and/or paeoniflorin (10 μM), followed by the investigation of cell proliferation, differentiation, mineralization, apoptosis, and autophagy. The AKT activator SC79 was used for evaluating the involvement of the AKT/mTOR signaling pathway. After DEX pretreatments, paeoniflorin promoted osteoblast differentiation and mineralization characterized by increase in Runx2, ALP, beclin-1, and LC3-II/LC3-I ratio levels and a decrease in apoptosis. The autophagy-promoting effects of paeoniflorin were reversed by SC79. C57BL/6 mice were given DEX (1 mg/kg) once daily and paeoniflorin (15 mg/kg) 48 hours for a total of 8 weeks followed by the investigation of histological changes, the trabecular bone microarchitecture, and the levels of bone turnover markers. The results showed that paeoniflorin increased alkaline phosphatase (ALP) activity and upregulated the expression of osteocalcin and beclin-1 but reduced the levels of Bax and C-terminal telopeptide of type I collagen (CTX-1). Thus, paeoniflorin may alleviate DEX-induced osteoporosis by promoting osteogenic differentiation and autophagy via inhibition of the AKT/mTOR signaling pathway.
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24
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Liu X, Chai Y, Liu G, Su W, Guo Q, Lv X, Gao P, Yu B, Ferbeyre G, Cao X, Wan M. Osteoclasts protect bone blood vessels against senescence through the angiogenin/plexin-B2 axis. Nat Commun 2021; 12:1832. [PMID: 33758201 PMCID: PMC7987975 DOI: 10.1038/s41467-021-22131-1] [Citation(s) in RCA: 53] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2019] [Accepted: 02/27/2021] [Indexed: 01/31/2023] Open
Abstract
Synthetic glucocorticoids (GCs), one of the most effective treatments for chronic inflammatory and autoimmune conditions in children, have adverse effects on the growing skeleton. GCs inhibit angiogenesis in growing bone, but the underlying mechanisms remain unclear. Here, we show that GC treatment in young mice induces vascular endothelial cell senescence in metaphysis of long bone, and that inhibition of endothelial cell senescence improves GC-impaired bone angiogenesis with coupled osteogenesis. We identify angiogenin (ANG), a ribonuclease with pro-angiogenic activity, secreted by osteoclasts as a key factor for protecting the neighboring vascular cells against senescence. ANG maintains the proliferative activity of endothelial cells through plexin-B2 (PLXNB2)-mediated transcription of ribosomal RNA (rRNA). GC treatment inhibits ANG production by suppressing osteoclast formation in metaphysis, resulting in impaired endothelial cell rRNA transcription and subsequent cellular senescence. These findings reveal the role of metaphyseal blood vessel senescence in mediating the action of GCs on growing skeleton and establish the ANG/PLXNB2 axis as a molecular basis for the osteoclast-vascular interplay in skeletal angiogenesis.
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MESH Headings
- Animals
- Apoptosis/drug effects
- Bone Development/drug effects
- Cell Proliferation/drug effects
- Cellular Senescence/drug effects
- Cellular Senescence/genetics
- Endothelial Cells/drug effects
- Endothelial Cells/metabolism
- Glucocorticoids/pharmacology
- Human Umbilical Vein Endothelial Cells
- Humans
- Immunohistochemistry
- In Situ Hybridization, Fluorescence
- Methylprednisolone/pharmacology
- Mice
- Mice, Inbred BALB C
- Mice, Inbred C57BL
- Neovascularization, Pathologic
- Neovascularization, Physiologic/drug effects
- Nerve Tissue Proteins/genetics
- Nerve Tissue Proteins/metabolism
- Osteoclasts/drug effects
- Osteoclasts/enzymology
- Osteoclasts/metabolism
- Osteogenesis/drug effects
- RNA, Ribosomal/biosynthesis
- RNA, Small Interfering
- Recombinant Proteins
- Ribonuclease, Pancreatic/genetics
- Ribonuclease, Pancreatic/metabolism
- Ribonuclease, Pancreatic/pharmacology
- Signal Transduction/drug effects
- Signal Transduction/genetics
- Tomography Scanners, X-Ray Computed
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Affiliation(s)
- Xiaonan Liu
- Department of Orthopaedic Surgery, The Johns Hopkins University School of Medicine, Baltimore, MD, USA
- Division of Orthopaedics and Traumatology, Department of Orthopaedics, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Yu Chai
- Department of Orthopaedic Surgery, The Johns Hopkins University School of Medicine, Baltimore, MD, USA
- Division of Orthopaedics and Traumatology, Department of Orthopaedics, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Guanqiao Liu
- Department of Orthopaedic Surgery, The Johns Hopkins University School of Medicine, Baltimore, MD, USA
- Division of Orthopaedics and Traumatology, Department of Orthopaedics, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Weiping Su
- Department of Orthopaedic Surgery, The Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Qiaoyue Guo
- Department of Orthopaedic Surgery, The Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Xiao Lv
- Department of Orthopaedic Surgery, The Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Peisong Gao
- Johns Hopkins Asthma & Allergy Center, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Bin Yu
- Division of Orthopaedics and Traumatology, Department of Orthopaedics, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Gerardo Ferbeyre
- Department of Biochemistry and Molecular Medicine, Université de Montréal, Montreal, QC, Canada
| | - Xu Cao
- Department of Orthopaedic Surgery, The Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Mei Wan
- Department of Orthopaedic Surgery, The Johns Hopkins University School of Medicine, Baltimore, MD, USA.
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25
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Hoshi S, Meguro S, Imai H, Matsuoka Y, Yoshida Y, Onagi A, Tanji R, Honda-Takinami R, Matsuoka K, Koguchi T, Hata J, Sato Y, Akaihata H, Kataoka M, Ogawa S, Kojima Y. Upregulation of glucocorticoid receptor-mediated glucose transporter 4 in enzalutamide-resistant prostate cancer. Cancer Sci 2021; 112:1899-1910. [PMID: 33619826 PMCID: PMC8088914 DOI: 10.1111/cas.14865] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Revised: 02/02/2021] [Accepted: 02/14/2021] [Indexed: 12/11/2022] Open
Abstract
Enzalutamide (Enz) is a second‐generation androgen receptor (AR) antagonist for castration‐resistant prostate cancer (CRPC) therapy, and it prolongs survival time in these patients. However, during Enz treatment, CRPC patients usually acquire resistance to Enz and often show cross‐resistance to other AR signaling inhibitors. Although glucocorticoid receptor (GR) is involved in this resistance, the role of GR has not yet been clarified. Here, we report that chronic Enz treatment induced GR‐mediated glucose transporter 4 (GLUT4) upregulation, and that upregulation was associated with resistance to Enz and other AR signaling inhibitors. Additionally, inhibition of GLUT4 suppressed cell proliferation in Enz‐resistant prostate cancer cells, which recovered from Enz resistance and cross‐resistance without changes in GR expression. Thus, a combination of Enz and a GLUT4 inhibitor could be useful in Enz‐resistant CRPC patients.
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Affiliation(s)
- Seiji Hoshi
- Department of Urology, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Satoru Meguro
- Department of Urology, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Hitomi Imai
- Department of Urology, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Yuta Matsuoka
- Department of Urology, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Yuki Yoshida
- Department of Urology, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Akihumi Onagi
- Department of Urology, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Ryo Tanji
- Department of Urology, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Ruriko Honda-Takinami
- Department of Urology, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Kanako Matsuoka
- Department of Urology, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Tomoyuki Koguchi
- Department of Urology, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Junya Hata
- Department of Urology, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Yuichi Sato
- Department of Urology, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Hidenori Akaihata
- Department of Urology, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Masao Kataoka
- Department of Urology, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Soichiro Ogawa
- Department of Urology, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Yoshiyuki Kojima
- Department of Urology, Fukushima Medical University School of Medicine, Fukushima, Japan
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26
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Li P, Mao W, Zhang S, Zhang L, Chen Z, Lu Z. MicroRNA-22 contributes to dexamethasone-induced osteoblast differentiation inhibition and dysfunction through targeting caveolin-3 expression in osteoblastic cells. Exp Ther Med 2021; 21:336. [PMID: 33732309 PMCID: PMC7903452 DOI: 10.3892/etm.2021.9767] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2020] [Accepted: 10/30/2020] [Indexed: 12/14/2022] Open
Abstract
Osteoporosis is a common complication of long-term use of glucocorticoids (GCs) characterized by the loss of bone mass and damage of the microarchitecture as well as osteoblast dysfunction. Previous studies have demonstrated that microRNA-22 (miR-22) is the negative modulator of osteogenesis that may target caveolin-3 (CAV3), which has been reported to enhance bone formation and inhibit the progression of osteoporosis as well as apoptosis. The present study aimed to investigate whether miR-22 may be involved in dexamethasone (DEX)-induced inhibition of osteoblast differentiation and dysfunction by regulating CAV3 expression. Reverse transcription-quantitative PCR (RT-qPCR) was performed to measure the expression of miR-22 and western blotting was performed to determine protein levels. The results demonstrated that miR-22 expression was upregulated in DEX-treated osteoblastic cells compared with the control group. In addition, miR-22 mimic aggravated, whereas miR-22 inhibitor mitigated DEX-induced damage in osteoblastic cells compared with the control groups. Additionally, CAV3 was identified as the target of miR-22 in osteoblasts using RT-qPCR, western blotting and dual-luciferase reporter gene assay analysis. The results also demonstrated that silencing of CAV3 blocked the beneficial effects of miR-22 inhibitor against DEX-induced cell damage and apoptosis in osteoblasts, as evidenced by the increased expression levels of cleaved caspase-3, Bax and alkaline phosphatase activity as well as decreased cell viability and Bcl-2 levels. Collectively, these results indicate a novel molecular mechanism by which miR-22 contributes to DEX-induced osteoblast dysfunction and apoptosis via the miR-22/CAV3 pathway.
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Affiliation(s)
- Peng Li
- Department of Orthopedics, General Hospital of Ningxia Medical University, Yinchuan, Ningxia 750004, P.R. China
| | - Weiwei Mao
- Clinical Skill Center of Yinchuan First People's Hospital, Yinchuan, Ningxia 750001, P.R. China
| | - Shuai Zhang
- Department of Orthopedics, General Hospital of Ningxia Medical University, Yinchuan, Ningxia 750004, P.R. China
| | - Liang Zhang
- Department of Orthopedics, General Hospital of Ningxia Medical University, Yinchuan, Ningxia 750004, P.R. China
| | - Zhirong Chen
- Department of Orthopedics, General Hospital of Ningxia Medical University, Yinchuan, Ningxia 750004, P.R. China
| | - Zhidong Lu
- Department of Orthopedics, General Hospital of Ningxia Medical University, Yinchuan, Ningxia 750004, P.R. China
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27
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Li Q, Cheng JC, Jiang Q, Lee WY. Role of sirtuins in bone biology: Potential implications for novel therapeutic strategies for osteoporosis. Aging Cell 2021; 20:e13301. [PMID: 33393735 PMCID: PMC7884050 DOI: 10.1111/acel.13301] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2020] [Revised: 12/10/2020] [Accepted: 12/16/2020] [Indexed: 12/16/2022] Open
Abstract
The decline in bone mass and bone strength and musculoskeletal problems associated with aging constitute a major challenge for affected individuals and the healthcare system globally. Sirtuins 1-7 (SIRT1-SIRT7) are a family of nicotinamide adenine dinucleotide-dependent deacetylases with remarkable abilities to promote longevity and counteract age-related diseases. Sirtuin knockout and transgenic models have provided novel insights into the function and signaling of these proteins in bone homeostasis. Studies have revealed that sirtuins play a critical role in normal skeletal development and homeostasis through their direct action on bone cells and that their dysregulation might contribute to different bone diseases. Preclinical studies have demonstrated that mice treated with sirtuin agonists show protection against age-related, postmenopausal, and immobilization-induced osteoporosis. These findings suggest that sirtuins could be potential targets for the modulation of the imbalance in bone remodeling and treatment of osteoporosis and other bone disorders. The aim of this review was to provide a comprehensive updated review of the current knowledge on sirtuin biology, focusing specifically on their roles in bone homeostasis and osteoporosis, and potential pharmacological interventions targeting sirtuins for the treatment of osteoporosis.
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Affiliation(s)
- Qiangqiang Li
- SH Ho Scoliosis Research LaboratoryDepartment of Orthopaedics and TraumatologyThe Chinese University of Hong KongHong Kong SARChina
- Joint Scoliosis Research Center of the Chinese University of Hong Kong and Nanjing UniversityThe Chinese University of Hong KongHong Kong SARChina
- Li Ka Shing Institute of Health SciencesThe Chinese University of Hong KongHong Kong SARChina
| | - Jack Chun‐yiu Cheng
- SH Ho Scoliosis Research LaboratoryDepartment of Orthopaedics and TraumatologyThe Chinese University of Hong KongHong Kong SARChina
- Joint Scoliosis Research Center of the Chinese University of Hong Kong and Nanjing UniversityThe Chinese University of Hong KongHong Kong SARChina
| | - Qing Jiang
- Department of Sports Medicine and Adult Reconstructive SurgeryDrum Tower Hospital affiliated to Medical School of Nanjing UniversityNanjingChina
| | - Wayne Yuk‐wai Lee
- SH Ho Scoliosis Research LaboratoryDepartment of Orthopaedics and TraumatologyThe Chinese University of Hong KongHong Kong SARChina
- Joint Scoliosis Research Center of the Chinese University of Hong Kong and Nanjing UniversityThe Chinese University of Hong KongHong Kong SARChina
- Li Ka Shing Institute of Health SciencesThe Chinese University of Hong KongHong Kong SARChina
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28
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Abstract
Glucocorticoids are widely prescribed to treat various allergic and autoimmune diseases; however, long-term use results in glucocorticoid-induced osteoporosis, characterized by consistent changes in bone remodeling with decreased bone formation as well as increased bone resorption. Not only bone mass but also bone quality decrease, resulting in an increased incidence of fractures. The primary role of autophagy is to clear up damaged cellular components such as long-lived proteins and organelles, thus participating in the conservation of different cells. Apoptosis is the physiological death of cells, and plays a crucial role in the stability of the environment inside a tissue. Available basic and clinical studies indicate that autophagy and apoptosis induced by glucocorticoids can regulate bone metabolism through complex mechanisms. In this review, we summarize the relationship between apoptosis, autophagy and bone metabolism related to glucocorticoids, providing a theoretical basis for therapeutic targets to rescue bone mass and bone quality in glucocorticoid-induced osteoporosis.
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29
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Sridharan K, Rathore B, Yousuf M, Reddy Rachamalla HK, Jinka S, Jaggarapu MMCS, Banerjee R. Self-Assembling Derivative of Hydrocortisone as Glucocorticoid Receptor-Targeted Nanotherapeutics for Synergistic, Combination Therapy against Colorectal Tumor. Mol Pharm 2020; 18:1208-1228. [PMID: 33371687 DOI: 10.1021/acs.molpharmaceut.0c01091] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Hydrocortisone, a natural glucocorticoid secreted by adrenal and extra-adrenal tissues, locally governs the transcription of genes involved in inflammation, immune response, metabolism, and energy homeostasis via binding to its cognate glucocorticoid receptor (GR). In this study, we show that modified hydrocortisone (HC16), a cancer-selective cytotoxic molecule, showed synergism in combination with drugs like Doxorubicin and docetaxel, self-assembled into vesicles, entrapped docetaxel and complexed with anti-cancer plasmid DNA for enhanced killing of cancer cells. These vesicles exhibited GR-mediated nuclear localization, delivery of the p53 gene, and also inhibited cell viability selectively in RKO, HCT15, and CT26 colon cancer cells but not in normal cells like CHO and HEK293T. Apart from exerting its own anti-cancer activity, the self-assembled HC16 vesicles loaded with docetaxel sensitized the cancer cells to its drug cargo by downregulating the drug metabolizing CYP3A4 gene. This indirectly reduces the risk of nonspecific adverse effects in normal cells, as the viability of sensitized cancer cells could be significantly reduced even in low doses of cytotoxic docetaxel. The near infrared (NIR)-dye-associated self-assemblies accumulated in a colon tumor with higher orders of NIR intensity compared to those in a colon of healthy mice. Thereafter, the treatment of HC16-docetaxel-p53 vesicle/DNA complex led to significant tumor regression, which resulted in a cecum/body weight ratio in tumor-bearing mice similar to that of healthy mice measured at 24 h postcompletion of treatment. There was an up to 2.5-fold enhancement in the overall survivability of colon-tumor-bearing mice treated with HC16-docetaxel-p53 vesicle/DNA complexes when compared against the pristine docetaxel-treated groups. Further, the HC16-docetaxel-p53 vesicle/DNA complex-treated group showed reduced nuclear accumulation of cell proliferation marker Ki67, reduced protein levels of prosurvival and mesenchymal proteins like Bcl-2, PARP, vimentin, and N-cadherin, and increased the levels of pro-apoptotic activated caspases as compared to the pristine docetaxel-treated groups. The therapeutic package described herein is expected to find future use as a rational, multifaceted, GR-targeted approach for inhibiting colon tumor progression.
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Affiliation(s)
- Kathyayani Sridharan
- Applied Biology Division, CSIR-Indian Institute of Chemical Technology, Hyderabad 500 007, India.,Academy of Scientific and Innovative Research (AcSIR), CSIR-HRDC Campus, Ghaziabad 201002, India
| | - Bhowmira Rathore
- Applied Biology Division, CSIR-Indian Institute of Chemical Technology, Hyderabad 500 007, India
| | - Md Yousuf
- Applied Biology Division, CSIR-Indian Institute of Chemical Technology, Hyderabad 500 007, India.,Department of Chemistry, Ramnagar College, Purba Medinipur, West Bengal 721 453, India
| | - Hari Krishna Reddy Rachamalla
- Applied Biology Division, CSIR-Indian Institute of Chemical Technology, Hyderabad 500 007, India.,Academy of Scientific and Innovative Research (AcSIR), CSIR-HRDC Campus, Ghaziabad 201002, India
| | - Sudhakar Jinka
- Applied Biology Division, CSIR-Indian Institute of Chemical Technology, Hyderabad 500 007, India.,Academy of Scientific and Innovative Research (AcSIR), CSIR-HRDC Campus, Ghaziabad 201002, India
| | - Madhan Mohan Chandra Sekhar Jaggarapu
- Applied Biology Division, CSIR-Indian Institute of Chemical Technology, Hyderabad 500 007, India.,Academy of Scientific and Innovative Research (AcSIR), CSIR-HRDC Campus, Ghaziabad 201002, India
| | - Rajkumar Banerjee
- Applied Biology Division, CSIR-Indian Institute of Chemical Technology, Hyderabad 500 007, India.,Academy of Scientific and Innovative Research (AcSIR), CSIR-HRDC Campus, Ghaziabad 201002, India
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Mohammadi L, Mosayyebi B, Imani M, Rahmati M. Dexamethasone Reduces Cell Adhesion and Migration of T47D Breast Cancer Cell Line. Anticancer Agents Med Chem 2020; 22:2494-2501. [PMID: 33319693 DOI: 10.2174/1871520621666201214150427] [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: 08/18/2020] [Revised: 10/16/2020] [Accepted: 10/26/2020] [Indexed: 11/22/2022]
Abstract
BACKGROUND Aberrant expression of cell adhesion molecules and matrix metalloproteinase (MMPs) plays a pivotal role in tumor biological processes including progression and metastasis of cancer cells. Targeting these processes and detailed understanding of their underlying molecular mechanism is an essential step in cancer treatment. Dexamethasone (Dex) is a type of synthetic corticosteroid hormone used as adjuvant therapy in combination with current cancer treatments such as chemotherapy in order to alleviate its side effects like acute nausea and vomiting. Recent evidences have suggested that Dex may have antitumor characteristics. OBJECTIVE Dex affects the migration and adhesion of T47D breast cancer cells as well as cell adhesion molecules e.g., cadherin and integrin, and MMPs by regulating the expression levels of associated genes. METHODS In this study, we evaluated the cytotoxicity of Dex on the T47D breast cancer cell line through MTT assay. Cell adhesion assay and wound healing assay were performed to determine the impact of Dex on cell adhesion and cell migration, respectively. Moreover, real-time PCR was used to measure the levels of α and β integrin, E-cadherin, N-cadherin, MMP-2, and MMP-9. RESULTS Dex decreased the viability of T47D cells in a time and dose-dependent manner. Cell adhesion and migration of T47D cells were reduced upon Dex treatment. The expression of α and β integrin, E-cadherin, N-cadherin, MMP-2, and MMP-9 were altered in response to the Dex treatment. CONCLUSION Our findings demonstrated that Dex may have a role in the prevention of metastasis in this cell line.
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Affiliation(s)
- Leila Mohammadi
- Student Research Committee, Tabriz University of Medical Science, Tabriz. Iran
| | - Bashir Mosayyebi
- Department of Medical Biotechnology, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz. Iran
| | - Mahsa Imani
- Department of Medical Biotechnology, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz. Iran
| | - Mohammad Rahmati
- Department of Medical Biotechnology, Faculty of Advanced Medical Sciences, Tabriz University of Medical Sciences, Tabriz. Iran
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Shen ZH, Hu XQ, Hu MJ, Pan XK, Lu HG, Chen B, Wu B, Chen G. Activation of AKT signaling via small molecule natural compound prevents against osteoblast apoptosis and osteonecrosis of the femoral head. Am J Transl Res 2020; 12:7211-7222. [PMID: 33312361 PMCID: PMC7724333] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Accepted: 09/10/2020] [Indexed: 06/12/2023]
Abstract
Vinpocetine (Vinp), a natural compound extracted from the leaves of Phyllostachys pubescens with apoptosis modulatory properties in variety of disorders. In the present study, we investigated the possible mechanism of Vinp in alleviating of the progress of osteonecrosis of the femoral head (ONFH) both in vitro and in vivo experiments. The results showed that treatment with Vinp suppressed the dexamethasone (Dex) induced over-regulation of ROS level and apoptotic factors. Mechanistically, the Vinp activated Akt signaling pathway in osteoblast. Moreover, Vinp exerted a protective role in animal ONFH model. To summarize, this work illustrated Vinp possessed a new potential therapeutic drug in ONFH.
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Affiliation(s)
- Zhong-Hai Shen
- Department of Orthopaedics, The Second Affiliated Hospital of Jiaxing University Jiaxing, Zhejiang, China
| | - Xu-Qi Hu
- Department of Orthopaedics, The Second Affiliated Hospital of Jiaxing University Jiaxing, Zhejiang, China
| | - Min-Jie Hu
- Department of Orthopaedics, The Second Affiliated Hospital of Jiaxing University Jiaxing, Zhejiang, China
| | - Xue-Kang Pan
- Department of Orthopaedics, The Second Affiliated Hospital of Jiaxing University Jiaxing, Zhejiang, China
| | - Hui-Gen Lu
- Department of Orthopaedics, The Second Affiliated Hospital of Jiaxing University Jiaxing, Zhejiang, China
| | - Bao Chen
- Department of Orthopaedics, The Second Affiliated Hospital of Jiaxing University Jiaxing, Zhejiang, China
| | - Bin Wu
- Department of Orthopaedics, The Second Affiliated Hospital of Jiaxing University Jiaxing, Zhejiang, China
| | - Gang Chen
- Department of Orthopaedics, The Second Affiliated Hospital of Jiaxing University Jiaxing, Zhejiang, China
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FGF23 protects osteoblasts from dexamethasone-induced oxidative injury. Aging (Albany NY) 2020; 12:19045-19059. [PMID: 33052883 PMCID: PMC7732311 DOI: 10.18632/aging.103689] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Accepted: 06/10/2020] [Indexed: 02/07/2023]
Abstract
Dexamethasone (DEX) can exert a cytotoxic effect on cultured osteoblasts. The current study explored the potential osteoblast cytoprotective effect of fibroblast growth factor 23 (FGF23). In OB-6 human osteoblastic cells and primary murine osteoblasts, FGF23 induced phosphorylation of the receptor FGFR1 and activated the downstream Akt-S6K1 signaling. FGF23-induced FGFR1-Akt-S6K phosphorylation was largely inhibited by FGFR1 shRNA, but augmented with ectopic FGFR1 expression in OB-6 cells. FGF23 attenuated DEX-induced death and apoptosis in OB-6 cells and murine osteoblasts. Its cytoprotective effects were abolished by FGFR1 shRNA, Akt inhibition or Akt1 knockout. Conversely, forced activation of Akt inhibited DEX-induced cytotoxicity in OB-6 cells. Furthermore, FGF23 activated Akt downstream nuclear-factor-E2-related factor 2 (Nrf2) signaling to alleviate DEX-induced oxidative injury. On the contrary, Nrf2 shRNA or knockout almost reversed FGF23-induced osteoblast cytoprotection against DEX. Collectively, FGF23 activates FGFR1-Akt and Nrf2 signaling cascades to protect osteoblasts from DEX-induced oxidative injury and cell death.
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Proanthocyanidins-Mediated Nrf2 Activation Ameliorates Glucocorticoid-Induced Oxidative Stress and Mitochondrial Dysfunction in Osteoblasts. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2020; 2020:9102012. [PMID: 33062149 PMCID: PMC7533007 DOI: 10.1155/2020/9102012] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Revised: 06/22/2020] [Accepted: 07/17/2020] [Indexed: 12/25/2022]
Abstract
The widespread use of therapeutic glucocorticoids has increased the frequency of glucocorticoid-induced osteoporosis (GIOP). One of the potential pathological processes of GIOP is an increased level of oxidative stress and mitochondrial dysfunction, which eventually leads to osteoblast apoptosis. Proanthocyanidins (PAC) are plant-derived antioxidants that have therapeutic potential against GIOP. In our study, a low dose of PAC was nontoxic to healthy osteoblasts and restored osteogenic function in dexamethasone- (Dex-) treated osteoblasts by suppressing oxidative stress, mitochondrial dysfunction, and apoptosis. Mechanistically, PAC neutralized Dex-induced damage in the osteoblasts by activating the Nrf2 pathway, since silencing Nrf2 partly eliminated the protective effects of PAC. Furthermore, PAC injection restored bone mass and promoted the expression of Nrf2 in the distal femur of Dex-treated osteoporotic rats. In summary, PAC protect osteoblasts against Dex-induced oxidative stress and mitochondrial dysfunction via the Nrf2 pathway activation and may be a promising drug for treating GIOP.
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Kooptiwut S, Samon K, Semprasert N, Suksri K, Yenchitsomanus PT. Prunetin Protects Against Dexamethasone-Induced Pancreatic Β-Cell Apoptosis via Modulation of p53 Signaling Pathway. Nat Prod Commun 2020. [DOI: 10.1177/1934578x20916328] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Long-term administration of dexamethasone results in insulin resistance and pancreatic β-cell apoptosis. Prunetin (an O-methylated isoflavone, a type of flavonoid) is demonstrated to protect diabetes, but the molecular mechanism of this protection is still unclear. This study thus aims to investigate how prunetin protects against dexamethasone-induced pancreatic β-cell apoptosis. Rat insulinoma (INS-1) cells were cultured in medium with or without dexamethasone in the presence or absence of prunetin or pifithrin-α, a p53 inhibitor. Cell apoptosis was measured by Annexin V/propidium iodide staining. Dexamethasone significantly induced INS-1 apoptosis but dexamethasone plus prunetin significantly reduced INS-1 apoptosis. Dexamethasone-treated INS-1 upregulated p53 protein expression; the induction of p53 was also reduced in the presence of RU486, a glucocorticoid receptor (GR) inhibitor. This suggested that dexamethasone induced P53 via GR. Dexamethasone-treated INS-1 significantly increased p53, Bax, and Rb protein expressions, whereas treatments of dexamethasone plus prunetin or pifithrin-α significantly decreased these protein expressions. In addition, dexamethasone significantly decreased B-cell lymphoma 2 (Bcl2), while dexamethasone plus prunetin or pifithrin-α significantly increased Bcl2. Dexamethasone significantly increased caspase-3 activity while co-treatment of dexamethasone plus prunetin or pifithrin-α significantly decreased caspase-3 activity to the control level. Taken together, our results revealed that prunetin protected against dexamethasone-induced pancreatic β-cells apoptosis via modulation of the p53 signaling pathway.
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Affiliation(s)
- Suwattanee Kooptiwut
- Department of Physiology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Kanokwan Samon
- Department of Physiology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Namoiy Semprasert
- Department of Physiology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Kanchana Suksri
- Department of Physiology, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Pa-Thai Yenchitsomanus
- Division of Molecular Medicine, Research Department, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
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Wang T, Yu X, He C. Pro-inflammatory Cytokines: Cellular and Molecular Drug Targets for Glucocorticoid-induced-osteoporosis via Osteocyte. Curr Drug Targets 2020; 20:1-15. [PMID: 29618305 DOI: 10.2174/1389450119666180405094046] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2018] [Revised: 03/11/2018] [Accepted: 03/21/2018] [Indexed: 02/08/2023]
Abstract
Glucocorticoids are widely used to treat varieties of allergic and autoimmune diseases, however, long-term application results in glucocorticoid-induced osteoporosis (GIOP). Inflammatory cytokines: tumor necrosis factor-α (TNF-α) and interleukin-6 (IL-6) play important regulatory roles in bone metabolism, but their roles in GIOP remain largely unknown. Osteocytes can modulate the formation and function of both osteoblasts and osteoclasts, directly via gap junctions, or indirectly by transferring molecule signaling. Apoptotic osteocytes release RANKL, HMGB1 and pro-inflammatory cytokines to stimulate osteoclastogenesis. Moreover, osteocytes can secrete FGF23 to regulate bone metabolism. Exposure to high levels of GCs can drive osteocyte apoptosis and influence gap junctions, leading to bone loss. GCs treatment is regarded to produce more FGF23 to inhibit bone mineralization. GCs also disrupt the vascular to decrease osteocyte feasibility and mineral appositional rate, resulting in a decline in bone strength. Apoptotic bodies from osteocytes induced by GCs treatment can enhance production of TNF-α and IL-6. On the other hand, TNF-α and IL-6 show synergistic effects by altering osteocytes signaling towards osteoclasts and osteoblasts. In addition, TNF-α can induce osteocyte apoptosis and attribute to a worsened bone quality in GCs. IL-6 and osteocytes may interact with each other. Therefore, we hypothesize that GCs regulate osteocyteogenesis through TNF-α and IL-6, which are highly expressed around osteocyte undergoing apoptosis. In the present review, we summarized the roles of osteocytes in regulating osteoblasts and osteoclasts. Furthermore, the mechanism of GCs altered relationship between osteocytes and osteoblasts/osteoclasts. In addition, we discussed the roles of TNF-α and IL-6 in GIOP by modulating osteocytes. Lastly, we discussed the possibility of using pro-inflammatory signaling pathway as therapeutic targets to develop drugs for GIOP.
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Affiliation(s)
- Tiantian Wang
- Department of Rehabilitation Medicine, West China Hospital, Sichuan University, Chengdu, Sichuan, 610041, China.,Key Laboratory of Rehabilitation Medicine, West China Hospital, Sichuan University, Chengdu, Sichuan, 610041, China.,Laboratory of Endocrinology and Metabolism, Department of Endocrinology, National Key Laboratory of Biotherapy/Collaborative Innovation Center of Biotherapy and Cancer Center, West China Hospital, Sichuan University, 610041, China
| | - Xijie Yu
- Laboratory of Endocrinology and Metabolism, Department of Endocrinology, National Key Laboratory of Biotherapy/Collaborative Innovation Center of Biotherapy and Cancer Center, West China Hospital, Sichuan University, 610041, China
| | - Chengqi He
- Department of Rehabilitation Medicine, West China Hospital, Sichuan University, Chengdu, Sichuan, 610041, China.,Key Laboratory of Rehabilitation Medicine, West China Hospital, Sichuan University, Chengdu, Sichuan, 610041, China
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36
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Jiang D, Jin H, Zuo J, Kong Y, Zhang X, Dong Q, Xu Z, Li Y. Potential biomarkers screening to predict side effects of dexamethasone in different cancers. Mol Genet Genomic Med 2020; 8:e1160. [PMID: 32048780 PMCID: PMC7196465 DOI: 10.1002/mgg3.1160] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2019] [Revised: 01/10/2020] [Accepted: 01/13/2020] [Indexed: 02/03/2023] Open
Abstract
BACKGROUND Excessive or prolonged usage of dexamethasone can cause serious side effects, but few studies reveal the related mechanism. Dexamethasone work differently in blood tumors and solid tumors, and the cause is still obscure. The aims of this study was to identify potential biomarkers associated with the side effects of dexamethasone in different tumors. METHODS Gene Expression Omnibus database (GEO) datasets of blood tumors and solid tumors were retrieval to selected microarray data. The differentially expressed genes (DEGs) were identified. Gene ontology (GO) and pathway enrichment analyses, and protein-protein interaction (PPI) network analysis were performed. RESULTS One hundred and eighty dexamethasone-specific DEGs (92 up and 88 downregulated) were obtained in lymphoma cell samples (named as DEGs-lymph), including APOD, TP53INP1, CLIC3, SERPINA9, and C3orf52. One hundred and four specific DEGs (100 up and 4 downregulated) were identified in prostate cancer cell samples (named as DEGs-prostate), including COL6A2, OSBPL5, OLAH, OGFRL1, and SLC39A14. The significantly enriched GO terms of DEGs-lymph contained cellular amino acid metabolic process and cell cycle. The most significantly enriched pathway of DEGs-lymph was cytosolic tRNA aminoacylation. The DEGs-prostate was enriched in 39 GO terms and two pathways, and the pathways were PPARA activates gene expression Homo sapiens, and insulin resistance. The PPI network of DEGs-lymph gathered into two major clusters, WARS1 and CDC25A were representatives for them, respectively. One cluster was mainly involved in cytosolic tRNA aminoacylation, aminoacyl-tRNA biosynthesis and the function of amino acid metabolism; another was associated with cell cycle and cell apoptosis. As for the PPI network of DEGs-prostate, HELZ2 was the top nodes involved in the most protein-protein pairs, which was related to the pathway of "PPARA activates gene expression Homo sapiens." CONCLUSIONS WARS1 and CDC25A might be potential biomarkers for side effects of dexamethasone in lymphoma, and HELZ2 in prostate cancer.
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Affiliation(s)
- Da Jiang
- Department of Medical Oncology, the Fourth Hospital of Hebei Medical University, Shijiazhuang, China
| | - Hui Jin
- Department of Medical Oncology, the Fourth Hospital of Hebei Medical University, Shijiazhuang, China
| | - Jing Zuo
- Department of Medical Oncology, the Fourth Hospital of Hebei Medical University, Shijiazhuang, China
| | - Yan Kong
- Department of Medical Oncology, the Fourth Hospital of Hebei Medical University, Shijiazhuang, China
| | - Xue Zhang
- Department of Medical Oncology, the Fourth Hospital of Hebei Medical University, Shijiazhuang, China
| | - Qian Dong
- Department of Medical Oncology, the Fourth Hospital of Hebei Medical University, Shijiazhuang, China
| | - Zhihong Xu
- Department of Medical Oncology, the Fourth Hospital of Hebei Medical University, Shijiazhuang, China
| | - Ying Li
- Department of Medical Oncology, the Fourth Hospital of Hebei Medical University, Shijiazhuang, China
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Tan F, Al-Rubeai M. A multifunctional dexamethasone-delivery implant fabricated using atmospheric plasma and its effects on apoptosis, osteogenesis and inflammation. Drug Deliv Transl Res 2020; 11:86-102. [PMID: 31898081 DOI: 10.1007/s13346-019-00700-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Implant-based local drug delivery is a unique surgical therapy with many clinical advantages. Atmospheric pressure plasma is a novel non-thermal surface biotechnology that has only recently been applied in enhancing a surgical implant. We are the first to use this technology to successfully create a dexamethasone-delivery metallic implant. Irrespective of the loaded medication, the surface of this novel implant possesses advantageous material features including homogeneity, hydrophilicity, and optimal roughness. UV-vis spectroscopy revealed much more sustainable drug release compared to the implants produced using simple drug attachment. In addition, our drug-releasing implant was found to have multiple biological benefits. As proven by the ELISA data, this multi-layer drug complex provides differential regulation on the cell apoptosis, as well as pro-osteogenic and anti-inflammatory effects on the peri-implant tissue. Furthermore, using the pathway-specific PCR array, our study discovered 28 and 26 upregulated and downregulated genes during osteogenesis and inflammation on our newly fabricated drug-delivery implant, respectively. The medication-induced change in molecular profile serves as a promising clue for designing future implant-based therapy. Collectively, we present atmospheric pressure plasma as a potent tool for creating a surgical implant-based drug-delivery system, which renders multiple therapeutic potentials. Graphical abstract Schematic of the APP-facilitated Dex-delivery implant. This layer-by-layer drug-releasing complex consisted of bottom plasma activation layer, middle medication layer, and top absorbable polymer layer.
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Affiliation(s)
- Fei Tan
- Department of Otorhinolaryngology and Head & Neck Surgery, Shanghai East Hospital, and School of Medicine, Tongji University, Shanghai, China. .,School of Chemical and Bioprocess Engineering, and Conway Institute of Biomolecular and Biomedical Research, University College Dublin-National University of Ireland, Dublin, Ireland. .,The Royal College of Surgeons of England, London, UK.
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The shift in the balance between osteoblastogenesis and adipogenesis of mesenchymal stem cells mediated by glucocorticoid receptor. Stem Cell Res Ther 2019; 10:377. [PMID: 31805987 PMCID: PMC6896503 DOI: 10.1186/s13287-019-1498-0] [Citation(s) in RCA: 93] [Impact Index Per Article: 18.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2019] [Revised: 11/09/2019] [Accepted: 11/18/2019] [Indexed: 12/31/2022] Open
Abstract
Mesenchymal stem cells (MSCs) are multipotent cells capable of differentiating into several tissues, such as bone, cartilage, and fat. Glucocorticoids affect a variety of biological processes such as proliferation, differentiation, and apoptosis of various cell types, including osteoblasts, adipocytes, or chondrocytes. Glucocorticoids exert their function by binding to the glucocorticoid receptor (GR). Physiological concentrations of glucocorticoids stimulate osteoblast proliferation and promote osteogenic differentiation of MSCs. However, pharmacological concentrations of glucocorticoids can not only induce apoptosis of osteoblasts and osteocytes but can also reduce proliferation and inhibit the differentiation of osteoprogenitor cells. Several signaling pathways, including the Wnt, TGFβ/BMP superfamily and Notch signaling pathways, transcription factors, post-transcriptional regulators, and other regulators, regulate osteoblastogenesis and adipogenesis of MSCs mediated by GR. These signaling pathways target key transcription factors, such as Runx2 and TAZ for osteogenesis and PPARγ and C/EBPs for adipogenesis. Glucocorticoid-induced osteonecrosis and osteoporosis are caused by various factors including dysfunction of bone marrow MSCs. Transplantation of MSCs is valuable in regenerative medicine for the treatment of osteonecrosis of the femoral head, osteoporosis, osteogenesis imperfecta, and other skeletal disorders. However, the mechanism of inducing MSCs to differentiate toward the osteogenic lineage is the key to an efficient treatment. Thus, a better understanding of the molecular mechanisms behind the imbalance between GR-mediated osteoblastogenesis and adipogenesis of MSCs would not only help us to identify the pathogenic causes of glucocorticoid-induced osteonecrosis and osteoporosis but also promote future clinical applications for stem cell-based tissue engineering and regenerative medicine. Here, we primarily review the signaling mechanisms involved in adipogenesis and osteogenesis mediated by GR and discuss the factors that control the adipo-osteogenic balance.
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Ahmad M, Hachemi Y, Paxian K, Mengele F, Koenen M, Tuckermann J. A Jack of All Trades: Impact of Glucocorticoids on Cellular Cross-Talk in Osteoimmunology. Front Immunol 2019; 10:2460. [PMID: 31681333 PMCID: PMC6811614 DOI: 10.3389/fimmu.2019.02460] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Accepted: 10/02/2019] [Indexed: 12/13/2022] Open
Abstract
Glucocorticoids (GCs) are known to have a strong impact on the immune system, metabolism, and bone homeostasis. While these functions have been long investigated separately in immunology, metabolism, or bone biology, the understanding of how GCs regulate the cellular cross-talk between innate immune cells, mesenchymal cells, and other stromal cells has been garnering attention rather recently. Here we review the recent findings of GC action in osteoporosis, inflammatory bone diseases (rheumatoid and osteoarthritis), and bone regeneration during fracture healing. We focus on studies of pre-clinical animal models that enable dissecting the role of GC actions in innate immune cells, stromal cells, and bone cells using conditional and function-selective mutant mice of the GC receptor (GR), or mice with impaired GC signaling. Importantly, GCs do not only directly affect cellular functions, but also influence the cross-talk between mesenchymal and immune cells, contributing to both beneficial and adverse effects of GCs. Given the importance of endogenous GCs as stress hormones and the wide prescription of pharmaceutical GCs, an improved understanding of GC action is decisive for tackling inflammatory bone diseases, osteoporosis, and aging.
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Affiliation(s)
- Mubashir Ahmad
- Institute of Comparative Molecular Endocrinology (CME), University of Ulm, Ulm, Germany
| | - Yasmine Hachemi
- Institute of Comparative Molecular Endocrinology (CME), University of Ulm, Ulm, Germany
| | - Kevin Paxian
- Institute of Comparative Molecular Endocrinology (CME), University of Ulm, Ulm, Germany
| | - Florian Mengele
- Institute of Comparative Molecular Endocrinology (CME), University of Ulm, Ulm, Germany
- Praxisklinik für Orthopädie, Unfall- und Neurochirurgie Prof. Bischoff/ Dr. Spies/ Dr. Mengele, Neu-Ulm, Germany
| | - Mascha Koenen
- Institute of Comparative Molecular Endocrinology (CME), University of Ulm, Ulm, Germany
- Department of Immunobiology, Yale School of Medicine, New Haven, CT, United States
| | - Jan Tuckermann
- Institute of Comparative Molecular Endocrinology (CME), University of Ulm, Ulm, Germany
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Zhou P, Xia D, Wang Y, Lv H, Wang Z, Xing M, Zhao Q, Xu S. Matrine derivate MASM protects murine MC3T3-E1 osteoblastic cells against dexamethasone-induced apoptosis via the regulation of USP14/p53. ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY 2019; 47:3720-3728. [PMID: 31523993 DOI: 10.1080/21691401.2019.1664563] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Panyu Zhou
- Department of Emergency, Changhai Hospital, Naval Military Medical University, Shanghai, China
- Department of Orthopedics, Changhai Hospital, Naval Military Medical University, Shanghai, China
| | - Demeng Xia
- Department of Emergency, Changhai Hospital, Naval Military Medical University, Shanghai, China
| | - Yang Wang
- Department of Emergency, Changhai Hospital, Naval Military Medical University, Shanghai, China
- Department of Orthopedics, Changhai Hospital, Naval Military Medical University, Shanghai, China
| | - Hongdi Lv
- Department of Logistics, The Nine Nine Zero Hospital of the People’s Liberation Army, Henan, China
| | - Ziqin Wang
- Department of Nutrition, Armed Police Henan Corps Hospital, Henan, China
| | - Malcolm Xing
- College of Mechanical Engineering, University of Manitoba, Winnipeg, Canada
| | - Qingjie Zhao
- Department of Organic Chemistry, School of Pharmcy, Naval Military Medical University, Shanghai, China
| | - Shuogui Xu
- Department of Emergency, Changhai Hospital, Naval Military Medical University, Shanghai, China
- Department of Orthopedics, Changhai Hospital, Naval Military Medical University, Shanghai, China
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Wang R, Wang L, He J, Li S, Yang X, Sun P, Yuan Y, Peng J, Yan J, Du J, Li H. Specific Inhibition of CYP4A Alleviates Myocardial Oxidative Stress and Apoptosis Induced by Advanced Glycation End-Products. Front Pharmacol 2019; 10:876. [PMID: 31447674 PMCID: PMC6696796 DOI: 10.3389/fphar.2019.00876] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2018] [Accepted: 07/10/2019] [Indexed: 12/19/2022] Open
Abstract
High exposure to advanced glycation end-products (AGEs) may induce cardiotoxicity. However, the effects and mechanisms remain to be further clarified. CYP4A plays an important role in the pathophysiological process of myocardial abnormalities by modulating oxidative stress and apoptosis (OS/Apop) signaling pathway. The present work aimed to investigate whether CYP4A mediates AGEs-induced myocardial injury. AGEs solution was administered intragastrically to C57BL/6 mice for 60 days, while the specific inhibitor of CYP4A, HET0016, was given from the 47th day via intraperitoneal injection for 2 weeks. Levels of OS/Apop in heart tissue were measured. The effects on the cell viability and apoptosis were detected in primary rat cardiomyocytes. To further investigate the mechanism, H9c2 cells were treated with HET0016 or small interfering RNAs (siRNAs) against CYP4a mRNA before incubation with AGEs. Exposure to AGEs led to significantly increased expression of CYP4A and levels of OS/Apop in heart and H9c2 cells both in vivo and in vitro. The OS/Apop pathway was activated with increased expression of NOX2, p-JNK, and cleaved caspase-3 (c-caspase-3) and decreased expression of p-Akt and Bcl-xL both in vivo and in vitro. Specific CYP4A suppression by HET0016 or siRNA exerted significant protective effects by attenuating AGEs-induced OS/Apop pathways in vitro. Our results demonstrate that specific inhibition of CYP4A might be a potential therapeutic option for myocardial injury induced by AGEs.
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Affiliation(s)
- Rui Wang
- College of Pharmacy, Dalian Medical University, Dalian, China.,Department of Hematology, Liaoning Medical Center for Hematopoietic Stem Cell Transplantation, Liaoning Key Laboratory of Hematopoietic Stem Cell Transplantation and Translational Medicine, the Second Hospital of Dalian Medical University, Dalian, China
| | - Li Wang
- College of Pharmacy, Dalian Medical University, Dalian, China
| | - Jinlong He
- Collaborative Innovation Center of Tianjin for Medical Epigenetics and Department of Physiology and Pathophysiology, Tianjin Medical University, Tianjin, China
| | - Shanshan Li
- College of Pharmacy, Dalian Medical University, Dalian, China
| | - Xiaojing Yang
- College of Pharmacy, Dalian Medical University, Dalian, China
| | - Pengyuan Sun
- College of Pharmacy, Dalian Medical University, Dalian, China
| | - Yuhui Yuan
- Institute of Cancer Stem Cell, Dalian Medical University, Dalian, China
| | - Jinyong Peng
- College of Pharmacy, Dalian Medical University, Dalian, China
| | - Jinsong Yan
- Department of Hematology, Liaoning Medical Center for Hematopoietic Stem Cell Transplantation, Liaoning Key Laboratory of Hematopoietic Stem Cell Transplantation and Translational Medicine, the Second Hospital of Dalian Medical University, Dalian, China
| | - Jianling Du
- Department of Endocrinology, the First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Hua Li
- College of Pharmacy, Dalian Medical University, Dalian, China
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Gu Y, Zhang AC, Han Y, Li J, Chen C, Lo YH. Machine Learning Based Real-Time Image-Guided Cell Sorting and Classification. Cytometry A 2019; 95:499-509. [PMID: 30958640 PMCID: PMC6520141 DOI: 10.1002/cyto.a.23764] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Revised: 03/06/2019] [Accepted: 03/25/2019] [Indexed: 01/05/2023]
Abstract
Cell classification based on phenotypical, spatial, and genetic information greatly advances our understanding of the physiology and pathology of biological systems. Technologies derived from next generation sequencing and fluorescent activated cell sorting are cornerstones for cell- and genomic-based assays supporting cell classification and mapping. However, there exists a deficiency in technology space to rapidly isolate cells based on high content image information. Fluorescence-activated cell sorting can only resolve cell-to-cell variation in fluorescence and optical scattering. Utilizing microfluidics, photonics, computation microscopy, real-time image processing and machine learning, we demonstrate an image-guided cell sorting and classification system possessing the high throughput of flow cytometer and high information content of microscopy. We demonstrate the utility of this technology in cell sorting based on (1) nuclear localization of glucocorticoid receptors, (2) particle binding to the cell membrane, and (3) DNA damage induced γ-H2AX foci. © 2019 International Society for Advancement of Cytometry.
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Affiliation(s)
- Yi Gu
- Department of Electrical and Computer Engineering, University of California, San Diego, La Jolla, California 92093-0407, USA
| | - Alex Ce Zhang
- Department of Electrical and Computer Engineering, University of California, San Diego, La Jolla, California 92093-0407, USA
| | - Yuanyuan Han
- Department of Electrical and Computer Engineering, University of California, San Diego, La Jolla, California 92093-0407, USA
| | - Jie Li
- Department of Neurosurgery, University of Minnesota, Minneapolis, D429 Mayo Memorial Building, 420 Delaware Street S.E., MMC 96MN 55455, USA
| | - Clark Chen
- Department of Neurosurgery, University of Minnesota, Minneapolis, D429 Mayo Memorial Building, 420 Delaware Street S.E., MMC 96MN 55455, USA
| | - Yu-Hwa Lo
- Department of Electrical and Computer Engineering, University of California, San Diego, La Jolla, California 92093-0407, USA,To whom correspondence should be addressed.
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Pignolo RJ, Samsonraj RM, Law SF, Wang H, Chandra A. Targeting Cell Senescence for the Treatment of Age-Related Bone Loss. Curr Osteoporos Rep 2019; 17:70-85. [PMID: 30806947 DOI: 10.1007/s11914-019-00504-2] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
PURPOSE OF REVIEW We review cell senescence in the context of age-related bone loss by broadly discussing aging mechanisms in bone, currently known inducers and markers of senescence, the senescence-associated secretory phenotype (SASP), and the emerging roles of senescence in bone homeostasis and pathology. RECENT FINDINGS Cellular senescence is a state of irreversible cell cycle arrest induced by insults or stressors including telomere attrition, oxidative stress, DNA damage, oncogene activation, and other intrinsic or extrinsic triggers and there is mounting evidence for the role of senescence in aging bone. Cellular aging also instigates a SASP that exerts detrimental paracrine and likely systemic effects. With aging, multiple cell types in the bone microenvironment become senescent, with osteocytes and myeloid cells as primary contributors to the SASP. Targeting undesired senescent cells may be a favorable strategy to promote bone anabolic and anti-resorptive functions in aging bone, with the possibility of improving bone quality and function with normal aging and/or disease.
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Affiliation(s)
- Robert J Pignolo
- Department of Medicine, Mayo Clinic, Rochester, MN, USA.
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, USA.
- Division of Geriatric Medicine & Gerontology, Mayo Clinic College of Medicine, 200 First Street SW, Rochester, MN, 55905, USA.
| | | | - Susan F Law
- Department of Medicine, Mayo Clinic, Rochester, MN, USA
| | - Haitao Wang
- Department of Medicine, Mayo Clinic, Rochester, MN, USA
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, USA
- Division of Geriatric Medicine & Gerontology, Mayo Clinic College of Medicine, 200 First Street SW, Rochester, MN, 55905, USA
| | - Abhishek Chandra
- Department of Medicine, Mayo Clinic, Rochester, MN, USA
- Department of Physiology and Biomedical Engineering, Mayo Clinic, Rochester, MN, USA
- Division of Geriatric Medicine & Gerontology, Mayo Clinic College of Medicine, 200 First Street SW, Rochester, MN, 55905, USA
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Deng S, Nie ZG, Peng PJ, Liu Y, Xing S, Long LS, Peng H. Decrease of GSK3β Ser-9 Phosphorylation Induced Osteoblast Apoptosis in Rat Osteoarthritis Model. Curr Med Sci 2019; 39:75-80. [DOI: 10.1007/s11596-019-2002-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2018] [Revised: 11/30/2018] [Indexed: 12/16/2022]
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Abstract
This chapter describes the isolation, culture, and staining of osteoblasts. The key advantages of this assay are that it allows direct measurement of bone matrix deposition and mineralization, as well as yielding good quantities of osteoblasts at defined stages of differentiation for molecular and histological analysis. An additional focus of this chapter will be the culture of osteoblasts from less conventional animal species.
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Affiliation(s)
- Inês P Perpétuo
- Department of Comparative Biomedical Sciences, Royal Veterinary College, London, UK
| | - Lucie E Bourne
- Department of Comparative Biomedical Sciences, Royal Veterinary College, London, UK
| | - Isabel R Orriss
- Department of Comparative Biomedical Sciences, Royal Veterinary College, London, UK.
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Deng S, Zhou JL, Fang HS, Nie ZG, Chen S, Peng H. Sesamin Protects the Femoral Head From Osteonecrosis by Inhibiting ROS-Induced Osteoblast Apoptosis in Rat Model. Front Physiol 2018; 9:1787. [PMID: 30618801 PMCID: PMC6298420 DOI: 10.3389/fphys.2018.01787] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2018] [Accepted: 11/28/2018] [Indexed: 11/22/2022] Open
Abstract
Glucocorticoids intake has become the most common pathogenic factor for osteonecrosis of the femoral head (ONFH). Annually, tens of millions of patients suffer from pain related to ONFH. Researchers have proposed several underlying mechanisms of ONFH, including osteocyte apoptosis, cell differentiation disorder, and angiogenesis hindrance. Sesamin, isolated from Sesamum indicum seeds, was reported could affect osteocyte inflammation and differentiation in osteoarthritis and osteoporosis. We investigated the underlying influence of sesamin on ONFH rat model. Fifteen male Sprague-Dawley rats were randomly divided into three groups. The ONFH model group only received the methylprednisolone (MPS) and lipopolysaccharide (LPS) injection to promote the development of ONFH. The sesamin treatment group was injected with sesamin, MPS, and LPS. The control group was untreated. Rats from above groups were sacrificed 4 weeks later. The effect of sesamin on ONFH rats was validated by H&E staining. TUNEL staining showed that femoral head necrosis was attenuated by sesamin. Furthermore, the phosphorylation of Akt was increased and the downstream cellular apoptosis signal pathway was inhibited. Intracellular ROS level was decreased after sesamin treatment. In conclusion, our findings suggest that sesamin protects the femoral head from osteonecrosis by inhibiting ROS-induced osteoblast apoptosis.
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Affiliation(s)
- Shuang Deng
- Department of Orthopedics, Renmin Hospital of Wuhan University, Wuhan, China
| | - Jian-Lin Zhou
- Department of Orthopedics, Renmin Hospital of Wuhan University, Wuhan, China
| | - Hong-Song Fang
- Department of Orthopedics, Renmin Hospital of Wuhan University, Wuhan, China
| | - Zhi-Gang Nie
- Department of Orthopedics, Renmin Hospital of Wuhan University, Wuhan, China
| | - Sen Chen
- Department of Orthopedics, Renmin Hospital of Wuhan University, Wuhan, China
| | - Hao Peng
- Department of Orthopedics, Renmin Hospital of Wuhan University, Wuhan, China
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47
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Hardy RS, Zhou H, Seibel MJ, Cooper MS. Glucocorticoids and Bone: Consequences of Endogenous and Exogenous Excess and Replacement Therapy. Endocr Rev 2018; 39:519-548. [PMID: 29905835 DOI: 10.1210/er.2018-00097] [Citation(s) in RCA: 136] [Impact Index Per Article: 22.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Accepted: 06/08/2018] [Indexed: 02/02/2023]
Abstract
Osteoporosis associated with long-term glucocorticoid therapy remains a common and serious bone disease. Additionally, in recent years it has become clear that more subtle states of endogenous glucocorticoid excess may have a major impact on bone health. Adverse effects can be seen with mild systemic glucocorticoid excess, but there is also evidence of tissue-specific regulation of glucocorticoid action within bone as a mechanism of disease. This review article examines (1) the role of endogenous glucocorticoids in normal bone physiology, (2) the skeletal effects of endogenous glucocorticoid excess in the context of endocrine conditions such as Cushing disease/syndrome and autonomous cortisol secretion (subclinical Cushing syndrome), and (3) the actions of therapeutic (exogenous) glucocorticoids on bone. We review the extent to which the effect of glucocorticoids on bone is influenced by variations in tissue metabolizing enzymes and glucocorticoid receptor expression and sensitivity. We consider how the effects of therapeutic glucocorticoids on bone are complicated by the effects of the underlying inflammatory disease being treated. We also examine the impact that glucocorticoid replacement regimens have on bone in the context of primary and secondary adrenal insufficiency. We conclude that even subtle excess of endogenous or moderate doses of therapeutic glucocorticoids are detrimental to bone. However, in patients with inflammatory disorders there is a complex interplay between glucocorticoid treatment and underlying inflammation, with the underlying condition frequently representing the major component underpinning bone damage.
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Affiliation(s)
- Rowan S Hardy
- University of Birmingham, Birmingham, United Kingdom
| | - Hong Zhou
- Bone Research Program, ANZAC Research Institute, Sydney, New South Wales, Australia
| | - Markus J Seibel
- Bone Research Program, ANZAC Research Institute, Sydney, New South Wales, Australia.,Department of Endocrinology and Metabolism, Concord Repatriation General Hospital, Sydney, New South Wales, Australia.,Concord Clinical School, University of Sydney, Sydney, New South Wales, Australia
| | - Mark S Cooper
- Department of Endocrinology and Metabolism, Concord Repatriation General Hospital, Sydney, New South Wales, Australia.,Concord Clinical School, University of Sydney, Sydney, New South Wales, Australia.,Adrenal Steroid Laboratory, ANZAC Research Institute, Sydney, New South Wales, Australia
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48
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Li S, Jiang H, Gu X. Echinacoside suppresses dexamethasone-induced growth inhibition and apoptosis in osteoblastic MC3T3-E1 cells. Exp Ther Med 2018; 16:643-648. [PMID: 30112029 PMCID: PMC6090444 DOI: 10.3892/etm.2018.6199] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Accepted: 05/11/2018] [Indexed: 12/28/2022] Open
Abstract
Glucocorticoids (GCs) are widely used to treat chronic diseases. Prolonged and/or overdose administration of GCs has many side-effects to human health including GC-induced osteoporosis (GIOP). In this investigation, the objective was to assess the influence that echinacoside (ECH) exerts upon dexamethasone-treated murine osteoblastic MC3T3-E1 cells. We found that ECH (5, 10, 20 and 40 mg/l) inhibited dexamethasone (1,000 nM)-suppressed cell viability as demonstrated by Cell Counting Kit-8 (CCK-8) assay. The dose of 10 mg/l was selected for the following experiments because this dose had a better effect than the dose of 5 mg/l, and the doses >10 mg/l had a similar effect as this dose. ECH (10 mg/l) or pifithrin-α (PFT-α) (a p53 inhibitor, 20 µM) suppressed dexamethasone-induced MC3T3-E1 apoptosis as illustrated by Annexin V/propidium iodide (PI) double-labeling flow cytometry analysis. ECH or PFT-α treatment also alleviated dexamethasone's action of inhibiting Bcl-2 expression as well as dexamethasone's action of stimulating on the expression of p53 and Bax. Moreover, lentivirus mediated-p53 overexpression reversed the effects of ECH in dexamethasone-treated MC3T3-E1 cells, suggesting that ECH induced anti-apoptotic effects in dexamethasone-treated osteoblasts via p53-dependent pathway. In summary, ECH has a protective effect against osteoblastic cell apoptosis induced by dexamethasone, suggesting that ECH may have potentials for clinical application in the treatment of GIOP.
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Affiliation(s)
- Sibo Li
- Department of Orthopedics and Traumatology, The Seventh People's Hospital of Shanghai University of Traditional Chinese Medicine, Shanghai 200137, P.R. China
| | - Haitao Jiang
- Department of Orthopedics and Traumatology, The Seventh People's Hospital of Shanghai University of Traditional Chinese Medicine, Shanghai 200137, P.R. China
| | - Xiaohua Gu
- Department of Orthopedics and Traumatology, The Seventh People's Hospital of Shanghai University of Traditional Chinese Medicine, Shanghai 200137, P.R. China
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Han L, Mao X, Wang K, Li Y, Zhao M, Wang J, Xue C. Phosphorylated peptides from Antarctic krill (Euphausia superba) ameliorated osteoporosis by activation of osteogenesis-related MAPKs and PI3K/AKT/GSK-3β pathways in dexamethasone-treated mice. J Funct Foods 2018. [DOI: 10.1016/j.jff.2018.06.004] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
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50
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Liu W, Zhao Z, Na Y, Meng C, Wang J, Bai R. Dexamethasone-induced production of reactive oxygen species promotes apoptosis via endoplasmic reticulum stress and autophagy in MC3T3-E1 cells. Int J Mol Med 2018; 41:2028-2036. [PMID: 29393368 PMCID: PMC5810234 DOI: 10.3892/ijmm.2018.3412] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2017] [Accepted: 01/05/2018] [Indexed: 02/06/2023] Open
Abstract
Apoptosis of osteoblasts, triggered by prolonged or excessive use of glucocorticoids (GCs), has been identified as a dominant contributor to the development of osteoporosis and osteonecrosis. However, the molecular mechanisms underlying GC‑induced apoptosis are multifaceted and remain to be fully elucidated. The present study aimed to explore the correlation between dexamethasone (DEX)‑induced reactive oxygen species (ROS), autophagy and apoptosis in MC3T3‑E1 osteoblast‑like cells. Cell viability was assessed using a Cell Counting Kit‑8 assay, and flow cytometry was performed to assess cellular apoptosis, cell cycle and ROS production. Immunofluorescence and western blot analysis were respectively used to detect autophagic vacuoles and the expression of proteins, including cyclin D kinase (CDK)2, poly[ADP ribose] polymerase, caspase‑3, activating transcription factor (ATF)4, CCAAT/enhancer‑binding protein homologous protein (CHOP), Beclin1, microtubule‑associated proteins 1A/1B light chain (LC)3B and P62. It was revealed that DEX not only reduced cell viability, but also promoted apoptosis via the activation of endoplasmic reticulum (ER) stress. In addition, DEX induced cell cycle arrest at G0/G1 phase via inhibition of the expression of CDK2, and the production of ROS was activated. Of note, the DEX‑mediated changes in viability and apoptosis were attenuated in MC3T3‑E1 cells after treatment with 3‑methyladenine, which is an autophagy inhibitor. Treatment with the antioxidant N‑acetylcysteine abolished the effect of DEX on the proliferation, apoptosis, ER stress and autophagy of MC3T3‑E1 cells. In conclusion, the present results indicated that DEX promoted the production of ROS, which enhanced apoptosis through activation of autophagy and ER stress in MC3T3-E1 cells.
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Affiliation(s)
| | | | - Yuyan Na
- Departments of Pediatric Orthopedics
| | | | - Jianzhong Wang
- Orthopedics and Trauma, The Second Affiliated Hospital of Inner Mongolia Medical University, Hohhot, Inner Mongolia 010030, P.R. China
| | - Rui Bai
- Departments of Pediatric Orthopedics
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