251
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Kirkwood KL, Zhang L, Thiyagarajan R, Seldeen KL, Troen BR. Myeloid-Derived Suppressor Cells at the Intersection of Inflammaging and Bone Fragility. Immunol Invest 2019; 47:844-854. [PMID: 31282803 DOI: 10.1080/08820139.2018.1552360] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Age-related alteration of the immune system with aging, or immunosenescence, plays a major role in several age-associated conditions, including loss of bone integrity. Studies over the past several years have clearly established the immune system is chronically activated with advanced aging, termed inflammaging, and is characterized by elevated levels of proinflammatory cytokines in response to physiological or environmental cues that essentially result in an arrested immune system that maintains a low-level state of activation. This age-associated inflammation impacts several biological systems including the innate immune system, where aging results in a skewing of the hematopoiesis toward the myeloid lineage, including the expansion of myeloid-derived suppressor cells (MDSCs). This heterogeneous population of myeloid cells classically displays immunosuppressive capacity but they also have the ability to directly differentiate into osteoclasts. This review explores the possibility of inflammaging to be involved in reduction of bone microarchitecture and loss of bone mass/strength through the expansion of MDSCs and the osteoclastogenic capacity and activity.
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Affiliation(s)
- Keith L Kirkwood
- a Department of Oral Biology , University at Buffalo , Buffalo , New York , USA.,b Department of Oral Oncology , Roswell Park Comprehensive Cancer Center , Buffalo , New York , USA
| | - Lixia Zhang
- a Department of Oral Biology , University at Buffalo , Buffalo , New York , USA
| | - Ramkumar Thiyagarajan
- c Division of Geriatrics and Palliative Medicine , University at Buffalo, Research Service, Western New York Veterans Affairs Healthcare Service , Buffalo , New York , USA
| | - Kenneth L Seldeen
- c Division of Geriatrics and Palliative Medicine , University at Buffalo, Research Service, Western New York Veterans Affairs Healthcare Service , Buffalo , New York , USA
| | - Bruce R Troen
- c Division of Geriatrics and Palliative Medicine , University at Buffalo, Research Service, Western New York Veterans Affairs Healthcare Service , Buffalo , New York , USA
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252
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Wang C, Mbalaviele G. Role of APD-Ribosylation in Bone Health and Disease. Cells 2019; 8:cells8101201. [PMID: 31590342 PMCID: PMC6829334 DOI: 10.3390/cells8101201] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2019] [Revised: 09/25/2019] [Accepted: 09/27/2019] [Indexed: 12/13/2022] Open
Abstract
The transfer of adenosine diphosphate (ADP)-ribose unit(s) from nicotinamide adenine dinucleotide (NAD+) to acceptor proteins is known as ADP-ribosylation. This post-translational modification (PTM) unavoidably alters protein functions and signaling networks, thereby impacting cell behaviors and tissue outcomes. As a ubiquitous mechanism, ADP-ribosylation affects multiple tissues, including bones, as abnormal ADP-ribosylation compromises bone development and remodeling. In this review, we describe the effects of ADP-ribosylation in bone development and maintenance, and highlight the underlying mechanisms.
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Affiliation(s)
- Chun Wang
- Division of Bone and Mineral Diseases, Washington University School of Medicine, St. Louis, MO 63110, USA.
| | - Gabriel Mbalaviele
- Division of Bone and Mineral Diseases, Washington University School of Medicine, St. Louis, MO 63110, USA.
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253
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Cho E, Chen Z, Lee J, Lee S, Lee TH. PSTP-3,5-Me Inhibits Osteoclast Differentiation and Bone Resorption. Molecules 2019; 24:molecules24183346. [PMID: 31540026 PMCID: PMC6767254 DOI: 10.3390/molecules24183346] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2019] [Accepted: 09/12/2019] [Indexed: 01/08/2023] Open
Abstract
Osteogenesis is an orchestrated process regulated by osteoclastogenesis and osteoblastogenesis. Excessive osteoclastogenesis causes bone diseases, such as osteoporosis. Although a few drugs are effective in osteoporosis treatment, these drugs lead to side effects, including cellulitis, flatulence, and hypocalcemia. In this study, we reported a 2-(N-Phenylmethylsulfonamido)-N-(2-(phenylthio)phenyl)propanamide (PSTP) compound, PSTP-3,5-Me, as a potential therapeutic agent for osteoporosis. Mouse bone marrow-derived macrophages (BMMs) were differentiated into osteoclasts by receptor activator of nuclear factor kappa B ligand (RANKL) and macrophage colony-stimulating factor (M-CSF) in the presence of PSTP-3,5-Me. PSTP-3,5-Me inhibited osteoclast differentiation by reduced tartrate-resistant acid phosphatase (TRAP)-positive osteoclasts, and suppressed the expression of osteoclast marker genes, such as cathepsin K (Ctsk) and TRAP (Acp5). We investigated signaling pathways mediated by RANKL and its receptor, RANK, and found that PSTP-3,5-Me inhibits nucleus translocation of nuclear factor of activated T cell cytoplasmic-1 (NFATc1). Moreover, PSTP-3,5-Me inhibited F-actin ring formation and mineral resorption. Overall, our data suggests that PSTP-3,5-Me attenuates osteoclast differentiation by blocking the activation of NFATc1.
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Affiliation(s)
- Eunjin Cho
- Department of Oral Biochemistry, Dental Science Research Institute, School of Dentistry, Chonnam National University, Gwangju 61186, Korea.
| | - Zhihao Chen
- Department of Molecular Medicine (BK21plus), Chonnam National University Graduate School, Gwangju 61186, Korea.
| | - Jinkyung Lee
- Department of Oral Biochemistry, Dental Science Research Institute, School of Dentistry, Chonnam National University, Gwangju 61186, Korea.
| | - Sunwoo Lee
- Department of Chemistry, Chonnam National University, Gwangju 61186, Korea.
| | - Tae-Hoon Lee
- Department of Oral Biochemistry, Dental Science Research Institute, School of Dentistry, Chonnam National University, Gwangju 61186, Korea.
- Department of Molecular Medicine (BK21plus), Chonnam National University Graduate School, Gwangju 61186, Korea.
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254
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Liu Z, Wang H, He J, Yuan X, Sun W. Rictor ablation in BMSCs inhibits bone metastasis of TM40D cells by attenuating osteolytic destruction and CAF formation. Int J Biol Sci 2019; 15:2448-2460. [PMID: 31595162 PMCID: PMC6775318 DOI: 10.7150/ijbs.37241] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2019] [Accepted: 07/28/2019] [Indexed: 01/06/2023] Open
Abstract
The mTOR complex 2 (mTORC2) is recognized as a promising target for breast cancer treatment. As mTORC2-specific inhibitors do not yet exist, studies into the role of mTORC2 in cancer are performed by deleting Rictor or by RNAi-mediated Rictor silencing. The purpose of this study was to explore the effects of Rictor ablation in bone mesenchymal stromal cells (BMSCs) on bone metastasis of breast cancer. First, female mice with the genotype of Prx1-Cre;Rictorf/f (hereafter RiCKO) or Rictorf/f (as control) were injected intratibially with cells of the breast cancer cell line (TM40D) at 4 months of age. Three weeks later, osteolytic bone destruction was detected in metastatic legs by X-ray and micro-CT. We found that Rictor ablation in BMSCs inhibited TM40D-induced osteolytic bone destruction and resulted in greater bone volume maintenance in vivo. Lower CTX-I serum level, a decreased number of TRAP+ osteoclasts and lower Cathepsin-K expression observed at the tumor-bone interface indicated that osteoclastogenesis was inhibited in RiCKO mice. Additionally, co-culture experiments confirmed that Rictor deletion in BMSCs diminished osteoclast differentiation partly via down regulation of RANKL expression. Furthermore, Rictor deficiency was found to reduce the transition of BMSCs to CAFs coupled with decreased secretion of cytokines (IL-6, RANKL, TGFβ), which resulted in lower chemotaxis and less proliferation in TM40D cells. These results suggest that Rictor ablation in BMSCs plays dual roles in breast cancer bone metastasis: (1) repression of osteolytic bone destruction; (2) inhibition of tumor growth.
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Affiliation(s)
- Zibo Liu
- Department of Anatomy, Histology and Embryology, Laboratory of Reproductive Medicine, Research Center for Bone and Stem Cells, Nanjing Medical University, Nanjing, China
| | - Hui Wang
- Department of Anatomy, Histology and Embryology, Laboratory of Reproductive Medicine, Research Center for Bone and Stem Cells, Nanjing Medical University, Nanjing, China
| | - Jialing He
- Department of Anatomy, Histology and Embryology, Laboratory of Reproductive Medicine, Research Center for Bone and Stem Cells, Nanjing Medical University, Nanjing, China
| | - Xiaoqin Yuan
- Department of Anatomy, Histology and Embryology, Laboratory of Reproductive Medicine, Research Center for Bone and Stem Cells, Nanjing Medical University, Nanjing, China
| | - Weiwei Sun
- Department of Anatomy, Histology and Embryology, Laboratory of Reproductive Medicine, Research Center for Bone and Stem Cells, Nanjing Medical University, Nanjing, China
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255
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Vesela B, Svandova E, Hovorakova M, Peterkova R, Kratochvilova A, Pasovska M, Ramesova A, Lesot H, Matalova E. Specification of Sprouty2 functions in osteogenesis in in vivo context. Organogenesis 2019; 15:111-119. [PMID: 31480885 DOI: 10.1080/15476278.2019.1656995] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
Sprouty proteins are modulators of the MAPK/ERK pathway. Amongst these, Sprouty2 (SPRY2) has been investigated as a possible factor that takes part in the initial phases of osteogenesis. However, the in vivo context has not yet been investigated and the underlying mechanisms taking place in vitro remain unknown. Therefore, in this study, the impact of Spry2 deficiency was examined in the developing tibias of Spry2 deficient (-/-) mouse. The investigation was performed when the osteogenic zone became clearly visible and when all three basic bone cells types were present. The main markers of osteoblasts, osteocytes and osteoclasts were evaluated by immunohistochemistry and RT-PCR. RT-PCR showed that the expression of Sost was 3.5 times higher in Spry2-/- than in the wild-type bone, which pointed to a still unknown mechanism of action of SPRY2 on the differentiation of osteocytes. The up-regulation of Sost was independent of Hif-1α expression and could not be related to its positive regulator, Runx2, since none of these factors showed an increased expression in the bone of Spry2-/- mice. Regarding the RANK/RANKL/OPG pathway, the Spry2-/- showed an increased expression of Rank, but no significant change in the expression of Rankl and Opg. Thanks to these results, the impact of Spry2 deletion is shown for the first time in the developing bone as a complex organ including, particularly, an effect on osteoblasts (Runx2) and osteocytes (Sost). This might explain the previously reported decrease in bone formation in postnatal Spry2-/- mice.
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Affiliation(s)
- Barbora Vesela
- Laboratory of Odontogenesis and Osteogenesis, Institute of Animal Physiology and Genetics, Academy of Sciences , Brno , Czech Republic
| | - Eva Svandova
- Laboratory of Odontogenesis and Osteogenesis, Institute of Animal Physiology and Genetics, Academy of Sciences , Brno , Czech Republic
| | - Maria Hovorakova
- Department of Developmental Biology, Institute of Experimental Medicine, Czech Academy of Sciences , Prague , Czech Republic
| | - Renata Peterkova
- Department of Histology and Embryology, Third Faculty of Medicine, Charles University , Prague , Czech Republic
| | - Adela Kratochvilova
- Laboratory of Odontogenesis and Osteogenesis, Institute of Animal Physiology and Genetics, Academy of Sciences , Brno , Czech Republic
| | - Martina Pasovska
- Department of Developmental Biology, Institute of Experimental Medicine, Czech Academy of Sciences , Prague , Czech Republic.,Department of Anthropology and Human Genetics, Faculty of Science, Charles University , Prague , Czech Republic
| | - Alice Ramesova
- Department of Physiology, University of Veterinary and Pharmaceutical Sciences , Brno , Czech Republic
| | - Herve Lesot
- Laboratory of Odontogenesis and Osteogenesis, Institute of Animal Physiology and Genetics, Academy of Sciences , Brno , Czech Republic
| | - Eva Matalova
- Laboratory of Odontogenesis and Osteogenesis, Institute of Animal Physiology and Genetics, Academy of Sciences , Brno , Czech Republic.,Department of Physiology, University of Veterinary and Pharmaceutical Sciences , Brno , Czech Republic
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256
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Lu N, Malemud CJ. Extracellular Signal-Regulated Kinase: A Regulator of Cell Growth, Inflammation, Chondrocyte and Bone Cell Receptor-Mediated Gene Expression. Int J Mol Sci 2019; 20:ijms20153792. [PMID: 31382554 PMCID: PMC6696446 DOI: 10.3390/ijms20153792] [Citation(s) in RCA: 101] [Impact Index Per Article: 20.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Revised: 07/15/2019] [Accepted: 07/23/2019] [Indexed: 12/17/2022] Open
Abstract
Extracellular signal-regulated kinase (ERK) is a member of the mitogen-activated protein kinase family of signaling molecules. ERK is predominantly found in two forms, ERK1 (p44) and ERK2 (p42), respectively. There are also several atypical forms of ERK, including ERK3, ERK4, ERK5 and ERK7. The ERK1/2 signaling pathway has been implicated in many and diverse cellular events, including proliferation, growth, differentiation, cell migration, cell survival, metabolism and transcription. ERK1/2 is activated (i.e., phosphorylated) in the cytosol and subsequently translocated to the nucleus, where it activates transcription factors including, but not limited to, ETS, c-Jun, and Fos. It is not surprising that the ERK1/2 signaling cascade has been implicated in many pathological conditions, namely, cancer, arthritis, chronic inflammation, and osteoporosis. This narrative review examines many of the cellular events in which the ERK1/2 signaling cascade plays a critical role. It is anticipated that agents designed to inhibit ERK1/2 activation or p-ERK1/2 activity will be developed for the treatment of those diseases characterized by dysregulated gene expression through ERK1/2 activation.
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Affiliation(s)
- Nathan Lu
- Department of Medicine, Division of Rheumatic Diseases, Case Western Reserve University School of Medicine, University Hospitals Cleveland Medical Center, Cleveland, OH 44106, USA
| | - Charles J Malemud
- Department of Medicine, Division of Rheumatic Diseases, Case Western Reserve University School of Medicine, University Hospitals Cleveland Medical Center, Cleveland, OH 44106, USA.
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257
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Jeong JW, Ji SY, Lee H, Hong SH, Kim GY, Park C, Lee BJ, Park EK, Hyun JW, Jeon YJ, Choi YH. Fermented Sea Tangle ( Laminaria japonica Aresch) Suppresses RANKL-Induced Osteoclastogenesis by Scavenging ROS in RAW 264.7 Cells. Foods 2019; 8:foods8080290. [PMID: 31357503 PMCID: PMC6723172 DOI: 10.3390/foods8080290] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Revised: 07/23/2019] [Accepted: 07/23/2019] [Indexed: 01/20/2023] Open
Abstract
Sea tangle (Laminaria japonica Aresch), a brown alga, has been used for many years as a functional food ingredient in the Asia-Pacific region. In the present study, we investigated the effects of fermented sea tangle extract (FST) on receptor activator of nuclear factor-κB (NF-κB) ligand (RANKL)-stimulated osteoclast differentiation, using RAW 264.7 mouse macrophage cells. FST was found to inhibit the RANKL-stimulated activation of tartrate-resistance acid phosphatase (TRAP) and F-actin ring structure formation. FST also down-regulated the expression of osteoclast marker genes like TRAP, matrix metalloproteinase-9, cathepsin K and osteoclast-associated receptor by blocking RANKL-induced activation of NF-κB and expression of nuclear factor of activated T cells c1 (NFATc1), a master transcription factor. In addition, FST significantly abolished RANKL-induced generation of reactive oxygen species (ROS) by activation of nuclear factor-erythroid 2-related factor 2 (Nrf2) and its transcriptional targets. Hence, it seems likely that FST may have anti-osteoclastogenic potential as a result of its ability to inactivate the NF-κB-mediated NFATc1 signaling pathway and by reducing ROS production through activation of the Nrf2 pathway. Although further studies are needed to inquire its efficacy in vivo, FST appears to have potential use as an adjunctive or as a prophylactic treatment for osteoclastic bone disease.
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Affiliation(s)
- Jin-Woo Jeong
- Nakdonggang National Institute of Biological Resources, Sangju 37242, Korea
| | - Seon Yeong Ji
- Department of Biochemistry, Dong-eui University College of Korean Medicine, Busan 47227, Korea
- Anti-Aging Research Center, Dong-eui University, Busan 47227, Korea
| | - Hyesook Lee
- Department of Biochemistry, Dong-eui University College of Korean Medicine, Busan 47227, Korea
- Anti-Aging Research Center, Dong-eui University, Busan 47227, Korea
| | - Su Hyun Hong
- Department of Biochemistry, Dong-eui University College of Korean Medicine, Busan 47227, Korea
- Anti-Aging Research Center, Dong-eui University, Busan 47227, Korea
| | - Gi-Young Kim
- Department of Marine Life Sciences, Jeju National University, Jeju 63243, Korea
| | - Cheol Park
- Department of Molecular Biology, College of Natural Sciences, Dong-eui University, Busan 47340, Korea
| | - Bae-Jin Lee
- Marine Bioprocess Co. Ltd., Busan 46048, Korea
| | - Eui Kyun Park
- Department of Oral Pathology and Regenerative Medicine, School of Dentistry, Kyungpook National University, Daegu 41940, Korea
| | - Jin Won Hyun
- Department of Biochemistry, School of Medicine, Jeju National University, Jeju 63243, Korea
| | - You-Jin Jeon
- Department of Marine Life Sciences, Jeju National University, Jeju 63243, Korea
| | - Yung Hyun Choi
- Department of Biochemistry, Dong-eui University College of Korean Medicine, Busan 47227, Korea.
- Anti-Aging Research Center, Dong-eui University, Busan 47227, Korea.
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258
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Reactive Oxygen Species in Osteoclast Differentiation and Possible Pharmaceutical Targets of ROS-Mediated Osteoclast Diseases. Int J Mol Sci 2019; 20:ijms20143576. [PMID: 31336616 PMCID: PMC6678498 DOI: 10.3390/ijms20143576] [Citation(s) in RCA: 261] [Impact Index Per Article: 52.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2019] [Revised: 07/19/2019] [Accepted: 07/21/2019] [Indexed: 12/18/2022] Open
Abstract
Reactive oxygen species (ROS) and free radicals are essential for transmission of cell signals and other physiological functions. However, excessive amounts of ROS can cause cellular imbalance in reduction–oxidation reactions and disrupt normal biological functions, leading to oxidative stress, a condition known to be responsible for the development of several diseases. The biphasic role of ROS in cellular functions has been a target of pharmacological research. Osteoclasts are derived from hematopoietic progenitors in the bone and are essential for skeletal growth and remodeling, for the maintenance of bone architecture throughout lifespan, and for calcium metabolism during bone homeostasis. ROS, including superoxide ion (O2−) and hydrogen peroxide (H2O2), are important components that regulate the differentiation of osteoclasts. Under normal physiological conditions, ROS produced by osteoclasts stimulate and facilitate resorption of bone tissue. Thus, elucidating the effects of ROS during osteoclast differentiation is important when studying diseases associated with bone resorption such as osteoporosis. This review examines the effect of ROS on osteoclast differentiation and the efficacy of novel chemical compounds with therapeutic potential for osteoclast related diseases.
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259
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Zhao H, Lazarenko OP, Chen JR. Hippuric acid and 3-(3-hydroxyphenyl) propionic acid inhibit murine osteoclastogenesis through RANKL-RANK independent pathway. J Cell Physiol 2019; 235:599-610. [PMID: 31271661 PMCID: PMC6852477 DOI: 10.1002/jcp.28998] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Accepted: 06/04/2019] [Indexed: 12/22/2022]
Abstract
Nutritional factors influence bone development. Previous studies demonstrated that bone mass significantly increased with suppressed bone resorption in early life of rats fed with AIN-93G semi-purified diets supplemented with 10% whole blueberry (BB) powder for 2 weeks. However, the effects of increased phenolic acids in animal serum due to this diet on bone and bone resorption were unclear. This in vitro and in ex vivo study examined the effects of phenolic hippuric acid (HA) and 3-(3-hydroxyphenyl) propionic acid (3-3-PPA) on osteoclastic cell differentiation and bone resorption. We cultured murine osteoclast (macrophage) cell line, RAW 264.7 cells, and hematopoietic osteoclast progenitor cells (isolated from 4-week-old C57BL6/J mice) with 50 ng/ml of receptor activator of nuclear factor κ-Β ligand (RANKL). Morphologic studies showed decreased osteoclast number with treatment of 2.5% mouse serum from BB diet-fed animals compared with those treated with serum from standard casein diet-fed mice in both RAW 264.7 cell and primary cell cultures. HA and 3-3-PPA, but not 3-4-PPA, had dose-dependent suppressive effects on osteoclastogenesis and osteoclast resorptive activity in Corning osteo-assay plates. Signaling pathway analysis showed that after pretreatment with HA or 3-3-PPA, RANKL-stimulated increase of osteoclastogenic markers, such as nuclear factor of activated T-cells, cytoplasmic 1 and matrix metallopeptidase 9 gene/protein expression were blunted. Inhibitory effects of HA and 3-3-PPA on osteoclastogenesis utilized RANKL/RANK independent mediators. The study revealed that HA and 3-3-PPA significantly inhibited osteoclastogenesis and bone osteoclastic resorptive activity.
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Affiliation(s)
- Haijun Zhao
- Department of Pediatrics, University of Arkansas for Medical Sciences, Little Rock, Arkansas.,Arkansas Children's Nutrition Center, Little Rock, Arkansas
| | - Oxana P Lazarenko
- Department of Pediatrics, University of Arkansas for Medical Sciences, Little Rock, Arkansas.,Arkansas Children's Nutrition Center, Little Rock, Arkansas
| | - Jin-Ran Chen
- Department of Pediatrics, University of Arkansas for Medical Sciences, Little Rock, Arkansas.,Arkansas Children's Nutrition Center, Little Rock, Arkansas
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260
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Ma JD, Jing J, Wang JW, Mo YQ, Li QH, Lin JZ, Chen LF, Shao L, Miossec P, Dai L. Activation of the Peroxisome Proliferator-Activated Receptor γ Coactivator 1β/NFATc1 Pathway in Circulating Osteoclast Precursors Associated With Bone Destruction in Rheumatoid Arthritis. Arthritis Rheumatol 2019; 71:1252-1264. [PMID: 30802366 PMCID: PMC6771785 DOI: 10.1002/art.40868] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2019] [Accepted: 02/21/2019] [Indexed: 12/22/2022]
Abstract
Objective Activation of osteoclastogenesis at the bone site in rheumatoid arthritis (RA) is well established. The mechanisms by which circulating osteoclast precursors contribute are still unclear. Peroxisome proliferator–activated receptor γ coactivator 1β (PGC‐1β) is implicated in transcriptional regulation of osteoclastogenesis in mouse models. This study was undertaken to investigate the contribution of PGC‐1β to circulating osteoclast precursors and its link to bone destruction in RA. Methods PGC‐1β expression in RA peripheral blood CD14+ monocytes was increased and showed correlation with joint destruction shown on radiographs. Cells from RA patients or healthy controls were transfected with a lentivirus vector for PGC‐1β gene silencing or overexpression and cultured with macrophage colony‐stimulating factor and RANKL. Bone resorption activity, bone‐degrading enzymes, and signaling molecules were measured in these mature osteoclasts. Results Increased nuclear accumulation of PGC‐1β was observed in RA peripheral blood CD14+ monocytes, and these cells had stronger osteoclastogenesis than in healthy controls. PGC‐1β protein expression was positively correlated with radiographic joint destruction (r = 0.396–0.413; all P < 0.05). PGC‐1β knockdown suppressed (51–82% reduction) the expression of cathepsin K, tartrate‐resistant acid phosphatase (TRAP), and matrix metalloproteinase 9 (MMP‐9), as well as osteoclast differentiation and bone resorption activity. Conversely, PGC‐1β overexpression increased these markers (by 1.5–1.8‐fold) and osteoclastogenesis. VIVIT, an inhibitor of NFATc1 activation, inhibited the effect of overexpressed PGC‐1β by reducing cathepsin K, TRAP, and MMP‐9 expression. Chromatin immunoprecipitation assay and dual‐luciferase reporter gene assay showed PGC‐1β bound to NFATc1 promoter, leading to transcriptional activation. Conclusion Activation of the PGC‐1β/NFATc1 pathway in circulating osteoclast precursors was associated with bone destruction in RA. This may represent a new treatment target.
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Affiliation(s)
- Jian-Da Ma
- Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Jun Jing
- Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Jun-Wei Wang
- Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Ying-Qian Mo
- Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Qian-Hua Li
- Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Jian-Zi Lin
- Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Le-Feng Chen
- Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Lan Shao
- First Affiliated Hospital, Sun Yat-Sen University, Guangzhou, China
| | - Pierre Miossec
- University of Lyon and Hospices Civils de Lyon, Lyon, France
| | - Lie Dai
- Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China
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261
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Pativada T, Kim MH, Lee JH, Hong SS, Choi CW, Choi YH, Kim WJ, Song DW, Park SI, Lee EJ, Seo BY, Kim H, Kim HK, Lee KH, Ahn SK, Ku JM, Park GH. Benzylideneacetone Derivatives Inhibit Osteoclastogenesis and Activate Osteoblastogenesis Independently Based on Specific Structure–Activity Relationship. J Med Chem 2019; 62:6063-6082. [DOI: 10.1021/acs.jmedchem.9b00270] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Triveni Pativada
- Department of Biochemistry and Molecular Biology, College of Medicine, Korea Molecular Medicine and Nutrition Research Institute, Korea University, Seoul 02841, Korea
| | - Myung Hwan Kim
- Department of Biochemistry and Molecular Biology, College of Medicine, Korea Molecular Medicine and Nutrition Research Institute, Korea University, Seoul 02841, Korea
| | - Jung-Hun Lee
- Bio-Center, Gyeonggido Business & Science Accelerator, Suwon 16229, Korea
| | - Seong Su Hong
- Bio-Center, Gyeonggido Business & Science Accelerator, Suwon 16229, Korea
| | - Chun Whan Choi
- Bio-Center, Gyeonggido Business & Science Accelerator, Suwon 16229, Korea
| | - Yun-Hyeok Choi
- Bio-Center, Gyeonggido Business & Science Accelerator, Suwon 16229, Korea
| | - Woo Jung Kim
- Bio-Center, Gyeonggido Business & Science Accelerator, Suwon 16229, Korea
| | - Da-Woon Song
- Bio-Center, Gyeonggido Business & Science Accelerator, Suwon 16229, Korea
| | - Serk In Park
- Department of Biochemistry and Molecular Biology, College of Medicine, Korea Molecular Medicine and Nutrition Research Institute, Korea University, Seoul 02841, Korea
| | - Eun Jung Lee
- Department of Biochemistry and Molecular Biology, College of Medicine, Korea Molecular Medicine and Nutrition Research Institute, Korea University, Seoul 02841, Korea
| | - Bo-Yeon Seo
- Department of Biochemistry and Molecular Biology, College of Medicine, Korea Molecular Medicine and Nutrition Research Institute, Korea University, Seoul 02841, Korea
| | - Hankyeom Kim
- Department of Pathology, Korea University Guro Hospital, Seoul 08308, Korea
| | - Hong Kyu Kim
- Department of Surgery, Seoul National University Hospital, Seoul 03080, Korea
| | - Kee Ho Lee
- Division of Radiation Cancer Research, Korea Institute of Radiological and Biomedical Sciences, Seoul 01812, Korea
| | - Sung K. Ahn
- Statistics, Department of Finance and Management Science, College of Business, Washington State University, Pullman, Washington 99164-4746, United States
| | - Jin-Mo Ku
- Bio-Center, Gyeonggido Business & Science Accelerator, Suwon 16229, Korea
| | - Gil Hong Park
- Department of Biochemistry and Molecular Biology, College of Medicine, Korea Molecular Medicine and Nutrition Research Institute, Korea University, Seoul 02841, Korea
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262
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Laha D, Deb M, Das H. KLF2 (kruppel-like factor 2 [lung]) regulates osteoclastogenesis by modulating autophagy. Autophagy 2019; 15:2063-2075. [PMID: 30894058 DOI: 10.1080/15548627.2019.1596491] [Citation(s) in RCA: 59] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Macroautophagy/autophagy is involved in myeloid cellular repair, destruction, and osteoclast differentiation; conversely, KLF2 (kruppel-like factor 2 [lung]) regulates myeloid cell activation and differentiation. To investigate the specific role of KLF2 in autophagy, osteoclastic differentiation was induced in monocytes in presence or absence of the autophagy inhibitor 3-methyladenine (3-MA), KLF2 inducer geranylgeranyl transferase inhibitor (GGTI298), and adenoviral overexpression of KLF2. We found that the number of autophagic cells and multinucleated osteoclasts were significantly decreased in presence of 3-MA, GGTI298, and KLF2 overexpressed cells indicating involvement of KLF2 in these processes. In addition, autophagy-related protein molecules were significantly decreased after induction of KLF2 during the course of osteoclastic differentiation. Furthermore, induction of arthritis in mice reduced the level of Klf2 in monocytes, and enhanced autophagy during osteoclastic differentiation. Mechanistically, knocking down of KLF2 increased the level of Beclin1 (BECN1) expression, and conversely, KLF2 over-expression reduced the level of BECN1 in monocytes. Moreover, 3-MA and GGTI298 both reduced myeloid cell proliferation concomitantly upregulating senescence-related molecules (CDKN1A/p21 and CDKN1B/p27kip1). We further confirmed epigenetic regulation of Becn1 by modulating Klf2; knocking down of Klf2 increased the levels of histone activation marks H3K9 and H4K8 acetylation in the promoter region of Becn1; and overexpression of Klf2 decreased the levels of H4K8 and H3K9 acetylation. In addition, osteoclastic differentiation also increased levels of H3K9 and H4K8 acetylation in the promoter region of Becn1. Together these findings for the first time revealed that Klf2 critically regulates Becn1-mediated autophagy process during osteoclastogenesis.Abbreviations: ACP5/TRAP: acid phosphatase 5, tartrate resistant; Ad-KLF2: adenoviral construct of KLF2; ATG3: autophagy related 3; ATG5: autophagy related 5; ATG7: autophagy related 7; ATG12: autophagy related 12; BECN1: beclin 1, autophagy related; C57BL/6: inbred mouse strain C57 black 6; ChIP: chromatin immunoprecipitation; CSF1/MCSF: colony stimulating factor 1 (macrophage); CTSK: cathepsin K; EV: empty vector; GGTI298: geranylgeranyl transferase inhibitor; H3K9Ac: histone H3 lysine 9 acetylation; H4K8Ac: histone H4 lysine 8 acetylation; K/BxN mice: T cell receptor (TCR) transgene KRN and the MHC class II molecule A(g7) generates K/BxN mice; KLF2: kruppel-like factor 2 (lung); 3MA: 3-methyladenine; MAP1LC3B/LC3B: microtubule-associated protein 1 light chain 3 beta; MDC: monodansylcadaverine; NFATc1: nuclear factor of activated T cells 1; NFKB: nuclear factor of kappa light polypeptide gene enhancer in B cells; p21/CDKN1A: cyclin dependent kinase inhibitor 1A; p27kip1/CDKN1B: cyclin-dependent kinase inhibitor 1B; PCR: polymerase chain reaction; PtdIns3K: phosphoinositide 3-kinase; RA: rheumatoid arthritis; siKlf2: small interfering KLF2 ribonucleic acid; NS: non-specific; RAW 264.7: abelson murine leukemia virus transformed macrophage cell line; TNFSF11/RANKL: tumor necrosis factor (ligand) superfamily, member 11; TSS: transcriptional start site; UCSC: University of California, Santa Cruz.
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Affiliation(s)
- Dipranjan Laha
- Department of Pharmaceutical Sciences, School of Pharmacy, Texas Tech University Health Sciences Center, Amarillo, TX, USA
| | - Moonmoon Deb
- Department of Pharmaceutical Sciences, School of Pharmacy, Texas Tech University Health Sciences Center, Amarillo, TX, USA
| | - Hiranmoy Das
- Department of Pharmaceutical Sciences, School of Pharmacy, Texas Tech University Health Sciences Center, Amarillo, TX, USA
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263
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Shen Y, Guo S, Chen G, Ding Y, Wu Y, Tian W. Hyperglycemia Induces Osteoclastogenesis and Bone Destruction Through the Activation of Ca 2+/Calmodulin-Dependent Protein Kinase II. Calcif Tissue Int 2019; 104:390-401. [PMID: 30506439 DOI: 10.1007/s00223-018-0499-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/28/2018] [Accepted: 11/24/2018] [Indexed: 02/07/2023]
Abstract
Hyperglycemia induces osteoclastogenesis and bone resorption through complicated, undefined mechanisms. Ca2+/calmodulin-dependent protein kinase II (CaMKII) promotes osteoclastogenesis, and could be activated by hyperglycemia. Here, we investigated whether CaMKII is involved in hyperglycemia-induced osteoclastogenesis and subsequent bone resorption. Osteoclast formation, bone resorption, CaMKII expression and phosphorylation were measured under high glucose in vitro and in streptozotocin-induced hyperglycemia rats with or without CaMKII inhibitor KN93. The results showed that 25 mmol/L high glucose in vitro promoted cathepsin K and tartrate-resistant acid phosphatase expression (p < 0.05) and osteoclast formation (p < 0.01) associated with enhancing β isoform expression (p < 0.05) and CaMKII phosphorylation (p < 0.001). Hyperglycemia promoted the formation of osteoclasts and resorption of trabecular and alveolar bone, and inhibited sizes of femur and mandible associated with enhanced CaMKII phosphorylation (p < 0.001) in rats. All these changes could be alleviated by KN93. These findings imply that CaMKII participates not only in hyperglycemia-induced osteoclastogenesis and subsequent bone resorption, but also in the hyperglycemia-induced developmental inhibition of bone.
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Affiliation(s)
- Yanxin Shen
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, People's Republic of China
- National Engineering Laboratory for Oral Regenerative Medicine, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, People's Republic of China
| | - Shujuan Guo
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, People's Republic of China
- National Engineering Laboratory for Oral Regenerative Medicine, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, People's Republic of China
- Department of Periodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, People's Republic of China
| | - Guoqing Chen
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, People's Republic of China
- National Engineering Laboratory for Oral Regenerative Medicine, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, People's Republic of China
| | - Yi Ding
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, People's Republic of China
- Department of Periodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, People's Republic of China
| | - Yafei Wu
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, People's Republic of China.
- Department of Periodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, People's Republic of China.
| | - Weidong Tian
- State Key Laboratory of Oral Diseases & National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, People's Republic of China.
- National Engineering Laboratory for Oral Regenerative Medicine, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, People's Republic of China.
- Department of Oral and Maxillofacial Surgery, West China Hospital of Stomatology, Sichuan University, Chengdu, 610041, People's Republic of China.
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Protective Effects of Fermented Oyster Extract against RANKL-Induced Osteoclastogenesis through Scavenging ROS Generation in RAW 264.7 Cells. Int J Mol Sci 2019; 20:ijms20061439. [PMID: 30901917 PMCID: PMC6471417 DOI: 10.3390/ijms20061439] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2019] [Revised: 03/14/2019] [Accepted: 03/19/2019] [Indexed: 11/17/2022] Open
Abstract
Excessive bone resorption by osteoclasts causes bone loss-related diseases and reactive oxygen species (ROS) act as second messengers in intercellular signaling pathways during osteoclast differentiation. In this study, we explored the protective effects of fermented oyster extract (FO) against receptor activator of nuclear factor-κB (NF-κB) ligand (RANKL)-induced osteoclast differentiation in murine monocyte/macrophage RAW 264.7 cells. Our results showed that FO markedly inhibited RANKL-induced activation of tartrate-resistant acid phosphatase and formation of F-actin ring structure. Mechanistically, FO has been shown to down-regulate RANKL-induced expression of osteoclast-specific markers by blocking the nuclear translocation of NF-κB and the transcriptional activation of nuclear factor of activated T cells c1 (NFATc1) and c-Fos. Furthermore, FO markedly diminished ROS production by RANKL stimulation, which was associated with blocking the expression of nicotinamide adenine dinucleotide phosphate oxidase 1 (NOX1) and its regulatory subunit Rac-1. However, a small interfering RNA (siRNA) targeting NOX1 suppressed RANKL-induced expression of osteoclast-specific markers and production of ROS and attenuated osteoclast differentiation as in the FO treatment group. Collectively, our findings suggest that FO has anti-osteoclastogenic potential by inactivating the NF-κB-mediated NFATc1 and c-Fos signaling pathways and inhibiting ROS generation, followed by suppression of osteoclast-specific genes. Although further studies are needed to demonstrate efficacy in in vivo animal models, FO may be used as an effective alternative agent for the prevention and treatment of osteoclastogenic bone diseases.
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265
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Li X, Luo W, Hu J, Chen Y, Yu T, Yang J, Dong S, Tian X, Sun L. Interleukin-27 prevents LPS-induced inflammatory osteolysis by inhibiting osteoclast formation and function. Am J Transl Res 2019; 11:1154-1169. [PMID: 30972153 PMCID: PMC6456512] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Accepted: 01/21/2019] [Indexed: 06/09/2023]
Abstract
Osteolysis is a serious complication of several chronic inflammatory diseases and is closely associated with a local chronic inflammatory reaction with a variety of causes. Inflammatory factors and osteoclastogenesis can enhance bone erosion. Interleukin-27 (IL-27) is speculated to play an important role in the physiological immune response. However, there are few studies on its effects on osteoclastogenesis. In this study, IL-27 was shown to inhibit receptor activator nuclear factor-κB ligand (RANKL)-induced osteoclastogenesis. The gene expression levels of osteoclast (OC)-specific genes, such as nuclear factor of activated T-cells cytoplasmic 1 (NFATc1) and C-FOS, which are essential for OC differentiation and bone resorption, were significantly reduced. Further investigating the underlying mechanism, we found that IL-27 significantly reduced RANKL-induced osteoclastogenesis by inhibiting the phosphorylation of IκB and phosphorylation of nuclear factor κB (NF-κB) p65. Furthermore, IL-27 was shown to inhibit lipopolysaccharide (LPS)-induced osteolysis in vivo. Collectively, these results indicate that IL-27 may be a potential candidate for the treatment of osteolytic diseases.
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Affiliation(s)
- Xianghe Li
- Guizhou Medical UniversityGuiyang 550025, China
| | - Wei Luo
- Guizhou Medical UniversityGuiyang 550025, China
| | - Junxian Hu
- Department of Orthopedics, Southwest Hospital, Third Military Medical University (Army Medical University)Chongqing 400038, China
| | - Yueqi Chen
- Department of Orthopedics, Southwest Hospital, Third Military Medical University (Army Medical University)Chongqing 400038, China
| | - Tao Yu
- Department of Orthopedics, Southwest Hospital, Third Military Medical University (Army Medical University)Chongqing 400038, China
| | - Jing Yang
- Center of Trauma of Daping Hospital, Third Military Medical University (Army Medical University)Chongqing 400038, China
| | - Shiwu Dong
- Department of Biomedical Materials Science, Third Military Medical University (Army Medical University)Chongqing 400038, China
| | | | - Li Sun
- Department of Orthopedics, Guizhou Province People’s HospitalGuiyang 550002, China
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266
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Lozano C, Duroux-Richard I, Firat H, Schordan E, Apparailly F. MicroRNAs: Key Regulators to Understand Osteoclast Differentiation? Front Immunol 2019; 10:375. [PMID: 30899258 PMCID: PMC6416164 DOI: 10.3389/fimmu.2019.00375] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2018] [Accepted: 02/14/2019] [Indexed: 12/21/2022] Open
Abstract
MicroRNAs (miRNAs) are small non-coding single-stranded RNAs that represent important posttranscriptional regulators of protein-encoding genes. In particular, miRNAs play key roles in regulating cellular processes such as proliferation, migration, and cell differentiation. Recently, miRNAs emerged as critical regulators of osteoclasts (OCs) biology and have been involved in OCs pathogenic role in several disorders. OCs are multinucleated cells generated from myeloid precursors in the bone marrow, specialized in bone resorption. While there is a growing number of information on the cytokines and signaling pathways that are critical to control the differentiation of osteoclast precursors (OCPs) into mature OCs, the connection between OC differentiation steps and miRNAs is less well-understood. The present review will first summarize our current understanding of the miRNA-regulated pathways in the sequential steps required for OC formation, from the motility and migration of OCPs to the cell-cell fusion and the final formation of the actin ring and ruffled border in the functionally resorbing multinucleated OCs. Then, considering the difficulty of working on primary OCs and on the generation of robust data we will give an update on the most recent advances in the detection technologies for miRNAs quantification and how these are of particular interest for the understanding of OC biology and their use as potential biomarkers.
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Affiliation(s)
- Claire Lozano
- IRMB, Univ Montpellier, INSERM, CHU Montpellier, Montpellier, France.,Immunology Department, CHU Montpellier, Montpellier, France
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267
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Cai L, Huo Z, Yang H, He F, Cao Z, Wu F, Liu L, Sun B. Gene co-expression network analysis identifies BRCC3 as a key regulator in osteogenic differentiation of osteoblasts through a β-catenin signaling dependent pathway. IRANIAN JOURNAL OF BASIC MEDICAL SCIENCES 2019; 22:173-178. [PMID: 30834083 PMCID: PMC6396986 DOI: 10.22038/ijbms.2018.29498.7123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Accepted: 09/25/2018] [Indexed: 11/17/2022]
Abstract
OBJECTIVES The prognosis of osteoporosis is very poor, and it is very important to identify a biomarker for prevention of osteoporosis. In this study, we aimed to identify candidate markers in osteoporosis and to investigate the role of candidate markers in osteogenic differentiation. MATERIALS AND METHODS Using Weighted Gene Co-Expression Network analysis, we identified three hub genes might associate with osteoporosis. The mRNA expression of hub genes in osteoblasts from osteoporosis patients or healthy donor was detected by qRT-PCR. Using siRNA and overexpression, we investigated the role of hub gene BRCC3 in osteogenic differentiation by alkaline phosphatase staining and Alizarin red staining. Moreover, the role of β-catenin signaling in the osteogenic differentiation was detected by using β-catenin signaling inhibitor XAV939. RESULTS We identified three hub genes that might associate with osteoporosis including BRCC3, UBE2N, and UBE2K. UBE2N mRNA and UBE2K mRNA were not changed in osteoblasts isolated from osteoporosis patients, compared with healthy donors, whereas BRCC3 mRNA was significantly increased. Depletion of BRCC3 promoted the activation of alkaline phosphatase and formation of calcified nodules in osteoblasts isolated from osteoporosis patients and up-regulated β-catenin expression. XAV939 reversed the BRCC3 siRNA-induced osteogenic differentiation. Additionally, inhibited osteogenic differentiation was also observed after BACC3 overexpression, and this was accompanied by decreased β-catenin expression. CONCLUSION BRCC3 is an important regulator for osteogenic differentiation of osteoblasts through β-catenin signaling, and it might be a promising target for osteoporosis treatment.
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Affiliation(s)
- Lixiong Cai
- Department of Traumatology and Orthopedics, Foshan Hospital of TCM, Foshan 528000, China
| | - Zhiqian Huo
- Department of Traumatology and Orthopedics, Foshan Hospital of TCM, Foshan 528000, China
| | - Haiyun Yang
- Department of Traumatology and Orthopedics, Foshan Hospital of TCM, Foshan 528000, China
| | - Fengchun He
- Department of Spine Osteopathy, Nanhai Hospital of Southen Medical University, Foshan 528000, China
| | - Zhenglin Cao
- Department of Traumatology and Orthopedics, Foshan Hospital of TCM, Foshan 528000, China
| | - Feng Wu
- Department of Traumatology and Orthopedics, Foshan Hospital of TCM, Foshan 528000, China
| | - Lianjun Liu
- Department of Ophthalmology Myopia Treatment, Foshan Aier Eye Hospital, Foshan 528000, China
| | - Bingyin Sun
- Department of Orthopaedics, Foshan Jiangxiang Hospital, Foshan 528200, China
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268
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Jia Y, Tao Y, Lv C, Xia Y, Wei Z, Dai Y. Tetrandrine enhances the ubiquitination and degradation of Syk through an AhR-c-src-c-Cbl pathway and consequently inhibits osteoclastogenesis and bone destruction in arthritis. Cell Death Dis 2019; 10:38. [PMID: 30674869 PMCID: PMC6427010 DOI: 10.1038/s41419-018-1286-2] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2018] [Revised: 12/10/2018] [Accepted: 12/14/2018] [Indexed: 12/27/2022]
Abstract
Recently, we reported that tetrandrine, a natural alkaloid, could inhibit the osteoclastogenesis and bone erosion through enhancing the ubiquitination and degradation of spleen tyrosine kinase (Syk). Herein, we addressed whether and how aryl hydrocarbon receptor (AhR) mediate the effect of tetrandrine. In vitro, tetrandrine was shown to repress RANKL-induced osteoclastogenesis and the expression of osteoclast-related marker genes, which was almost completely reversed by either AhR antagonist CH223191 or siRNA. In pre-osteoclasts, tetrandrine enhanced the ubiquitination and degradation of Syk through the AhR/c-src/c-Cbl signaling pathway, downregulated the expression of phospho-Syk and phospho-PLCγ2, and inhibited the nuclear translocation of NFATc1, a master transcription factor for osteoclastogenesis. Notably, tetrandrine acted through the non-genomic pathway of the ligand-activated AhR, as evidenced by the fact that the effect of tetrandrine did not change in the absence of AhR nuclear translocator. In collagen-induced arthritis rats, oral administration of tetrandrine decreased the number of phospho-Syk-positive cells and osteoclasts, and reduced the bone erosion in the areas of the proximal tibial epiphysis excluding the cortical bone. A combined use with CH223191 almost abolished the effect of tetrandrine. These findings revealed that tetrandrine enhanced the ubiquitination and degradation of Syk and consequently repressed the osteoclastogenesis and bone destruction through the AhR-c-src-c-Cbl pathway.
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Affiliation(s)
- Yugai Jia
- Department of Pharmacology of Chinese Materia Medica, School of Traditional Chinese Pharmacy, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing, 210009, China.,Department of Pharmacology, Hebei University of Chinese Medicine, No. 326 South Xinshi Road, Shijiazhuang, 050091, Hebei, China
| | - Yu Tao
- Department of Pharmacology of Chinese Materia Medica, School of Traditional Chinese Pharmacy, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing, 210009, China
| | - Changjun Lv
- Department of Pharmacology of Chinese Materia Medica, School of Traditional Chinese Pharmacy, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing, 210009, China
| | - Yufeng Xia
- Department of Pharmacology of Chinese Materia Medica, School of Traditional Chinese Pharmacy, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing, 210009, China
| | - Zhifeng Wei
- Department of Pharmacology of Chinese Materia Medica, School of Traditional Chinese Pharmacy, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing, 210009, China.
| | - Yue Dai
- Department of Pharmacology of Chinese Materia Medica, School of Traditional Chinese Pharmacy, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing, 210009, China.
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269
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Ma Z, Yu R, Zhao J, Sun L, Jian L, Li C, Liu X. Constant hypoxia inhibits osteoclast differentiation and bone resorption by regulating phosphorylation of JNK and IκBα. Inflamm Res 2019; 68:157-166. [PMID: 30604211 DOI: 10.1007/s00011-018-1209-9] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Revised: 11/19/2018] [Accepted: 12/17/2018] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Osteoclasts are responsible for the bone loss in rheumatoid arthritis (RA). Hypoxia has been suggested to play key roles in pathological bone loss. However, the current understanding of the effects of hypoxia on osteoclastogenesis is controversial. Effects of hypoxia on both the formation and function of osteoclasts requires examination. In the current study, we aimed to explore the effect of hypoxia on osteoclast differentiation and the underlying mechanisms. METHODS RAW264.7 cells and murine bone-marrow-derived monocytes were used to induce osteoclastogenesis in the presence of macrophage colony-stimulating factor (M-CSF) and receptor activator of nuclear factor kappa B ligand (RANKL). Hypoxic conditions were maintained in a hypoxic chamber at 5% CO2 and 1% O2, balanced with N2. Osteoclasts were detected by tartrate-resistant acid phosphatase (TRAP) staining. A bone resorption assay was carried out in vitro using bone slices. RT-PCR was conducted to detect osteoclast markers and transcription factors. The phosphorylation of nuclear factor-κBα (IκBα), c-Jun N-terminal kinase (JNK), extracellular regulated protein kinase (ERK), and p38 was detected by western blotting. Mann-Whitney U test or Student's t test was used to compare differences between the two groups. RESULTS TRAP staining and the bone resorption assay revealed that hypoxia-restrained osteoclast differentiation and bone resorption. Expression of osteoclast markers including cathepsin K, RANK, and TRAP decreased during osteoclast differentiation under hypoxic conditions (all P < 0.05). Hypoxia at 1% O2 did not affect cell viability, whereas it dramatically abated RANKL-dependent phosphorylation of the JNK-mitogen-activated protein kinases (MAPK) and IκBα pathways. Moreover, the expression of nuclear factor of activated T-cell cytoplasmic 1 (NFATc1) was inhibited under hypoxic conditions (all P < 0.05). CONCLUSIONS These results suggest that constant hypoxia at 1% O2 significantly restrains osteoclast formation and resorbing function without affecting cell viability. Constant hypoxia might inhibit RANKL-induced osteoclastogenesis by regulating NFATc1 expression via interfering the phosphorylation of JNK and IκBα.
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Affiliation(s)
- Zhenzhen Ma
- Department of Rheumatology and Immunology, Peking University Third Hospital, Beijing, 100191, China
| | - Ruohan Yu
- Department of Rheumatology and Immunology, Peking University Third Hospital, Beijing, 100191, China
| | - Jinxia Zhao
- Department of Rheumatology and Immunology, Peking University Third Hospital, Beijing, 100191, China
| | - Lin Sun
- Department of Rheumatology and Immunology, Peking University Third Hospital, Beijing, 100191, China
| | - Leilei Jian
- Department of Rheumatology and Immunology, Peking University Third Hospital, Beijing, 100191, China
| | - Changhong Li
- Department of Rheumatology and Immunology, Peking University Third Hospital, Beijing, 100191, China.
| | - Xiangyuan Liu
- Department of Rheumatology and Immunology, Peking University Third Hospital, Beijing, 100191, China.
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270
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Kao FC, Chiu PY, Tsai TT, Lin ZH. The application of nanogenerators and piezoelectricity in osteogenesis. SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS 2019; 20:1103-1117. [PMID: 32002085 PMCID: PMC6968561 DOI: 10.1080/14686996.2019.1693880] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Revised: 10/29/2019] [Accepted: 11/13/2019] [Indexed: 05/13/2023]
Abstract
Bone is a complex organ possessing both physicomechanical and bioelectrochemical properties. In the view of Wolff's Law, bone can respond to mechanical loading and is subsequently reinforced in the areas of stress. Piezoelectricity is one of several mechanical responses of the bone matrix that allows osteocytes, osteoblasts, osteoclasts, and osteoprogenitors to react to changes in their environment. The present review details how osteocytes convert external mechanical stimuli into internal bioelectrical signals and the induction of intercellular cytokines from the standpoint of piezoelectricity. In addition, this review introduces piezoelectric and triboelectric materials used as self-powered electrical generators to promote osteogenic proliferation and differentiation due to their electromechanical properties, which could promote the development of promising applications in tissue engineering and bone regeneration.
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Affiliation(s)
- Fu-Cheng Kao
- Institute of Biomedical Engineering, National Tsing Hua University, Hsinchu, Taiwan
- Department of Power Mechanical Engineering, National Tsing Hua University, Hsinchu, Taiwan
- Frontier Research Center on Fundamental and Applied Sciences of Matters, National Tsing Hua University, Hsinchu, Taiwan
- Department of Orthopaedic Surgery, Spine Section, Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Ping-Yeh Chiu
- Department of Orthopaedic Surgery, Spine Section, Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Tsung-Ting Tsai
- Department of Orthopaedic Surgery, Spine Section, Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Zong-Hong Lin
- Institute of Biomedical Engineering, National Tsing Hua University, Hsinchu, Taiwan
- Department of Power Mechanical Engineering, National Tsing Hua University, Hsinchu, Taiwan
- Frontier Research Center on Fundamental and Applied Sciences of Matters, National Tsing Hua University, Hsinchu, Taiwan
- CONTACT Zong-Hong Lin Institute of Biomedical Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan
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271
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Chaugule S, Kashipathi Sureshbabu S, Dakave S, Krishna CM, Chaudhari P, Indap M, Chiplunkar S. Hexane Fraction of Turbo brunneus Inhibits Intermediates of RANK-RANKL Signaling Pathway and Prevent Ovariectomy Induced Bone Loss. Front Endocrinol (Lausanne) 2019; 10:608. [PMID: 31555218 PMCID: PMC6742724 DOI: 10.3389/fendo.2019.00608] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/21/2019] [Accepted: 08/21/2019] [Indexed: 01/04/2023] Open
Abstract
Osteoporosis is a "silent disease" characterized by fragile and impaired bone quality. Bone fracture results in increased mortality and poor quality of life in aged people particularly in postmenopausal women. Bone is maintained through the delicate balance between osteoclast-mediated bone resorption and osteoblast-mediated bone formation. The imbalance is caused most often by overly active osteoclasts due to estrogen deficiency. Natural products have long been used to prevent and treat osteoporosis since they have fewer side effects. The marine environment is a potential source of biologically and structurally novel biomolecules with promising biological activities but is less explored for the treatment of bone-related diseases. The present study aims to evaluate the antiosteoporotic effect of Hexane fraction of Turbo brunneus methanolic extract (HxTME) and to investigate its role in RANK-RANKL signaling pathway using in vitro osteoclasts cultures and in vivo ovariectomized (OVX) Swiss mice model. The present study demonstrated that the HxTME significantly inhibited RANKL induced osteoclast differentiation and maturation in vitro. HxTME completely downregulated the mRNA expression of key transcription factors such as NFATc1, c-FOS, and osteoclasts related genes involved in osteoclastogenesis. In vivo studies also depicted the effectiveness of HxTME in ovariectomized mice by preserving bone microarchitecture, mineral content, and inhibiting bone loss in treated mice as analyzed by Histomorphometry, MicroCT, and Raman spectroscopy. Oral administration of HxTME fraction resulted in the decreased percentage of F4/80+, CD11b+, and CD4+ RANKL+ T cells in OVX mice whereas pro-osteoclastic cytokine, IL6 was markedly reduced upon treatment with HxTME. On stimulation with PMA/Io and PHA, a significant decrease in proliferative response in the splenocytes of HxTME treated OVX mice was observed. Fatty acid profiling revealed that HxTME is rich in ω3 and ω6 polyunsaturated fatty acids (PUFAs), which have high nutraceutical properties and are known to play important role in growth, development and maintenance of health. Therefore, HxTME may be a good source of nutraceutical in the treatment of bone-related diseases particularly in postmenopausal osteoporosis and may be pursued as a potential candidate for treatment and management of osteoporosis.
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Affiliation(s)
- Sachin Chaugule
- Chiplunkar Lab, Advanced Centre for Treatment, Research and Education in Cancer, Tata Memorial Centre, Navi Mumbai, India
- Central Research Laboratory, D. G. Ruparel College, Mumbai, India
| | - Shalini Kashipathi Sureshbabu
- Chiplunkar Lab, Advanced Centre for Treatment, Research and Education in Cancer, Tata Memorial Centre, Navi Mumbai, India
- Homi Bhabha National Institute, Mumbai, India
| | - Suresh Dakave
- Chiplunkar Lab, Advanced Centre for Treatment, Research and Education in Cancer, Tata Memorial Centre, Navi Mumbai, India
| | - C. Murali Krishna
- Homi Bhabha National Institute, Mumbai, India
- Chilakapati Laboratory, Advanced Centre for Treatment, Research and Education in Cancer, Tata Memorial Centre, Navi Mumbai, India
| | - Pradip Chaudhari
- Homi Bhabha National Institute, Mumbai, India
- Comparative Oncology Program and Small Animal Imaging Facility, Advanced Centre for Treatment, Research and Education in Cancer, Tata Memorial Centre, Navi Mumbai, India
| | - Madhavi Indap
- Central Research Laboratory, D. G. Ruparel College, Mumbai, India
- *Correspondence: Madhavi Indap
| | - Shubhada Chiplunkar
- Chiplunkar Lab, Advanced Centre for Treatment, Research and Education in Cancer, Tata Memorial Centre, Navi Mumbai, India
- Homi Bhabha National Institute, Mumbai, India
- Shubhada Chiplunkar
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272
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Korkosz M, Czepiel M, Guła Z, Stec M, Węglarczyk K, Rutkowska-Zapała M, Gruca A, Lenart M, Baran J, Gąsowski J, Błyszczuk P, Siedlar M. Sera of patients with axial spondyloarthritis (axSpA) enhance osteoclastogenic potential of monocytes isolated from healthy individuals. BMC Musculoskelet Disord 2018; 19:434. [PMID: 30522483 PMCID: PMC6284314 DOI: 10.1186/s12891-018-2356-4] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/21/2018] [Accepted: 11/22/2018] [Indexed: 12/18/2022] Open
Abstract
Background Axial spondyloarthritis (axSpA) is characterized by significant bone loss caused by dysregulation of physiological bone turnover, possibly resulting from intensified differentiation of osteoclasts. The aim of this study was to reevaluate the levels of osteoclastogenesis-mediating factors: soluble RANKL, M-CSF, OPG and other cytokines in sera of untreated, with sDMARDs and/or bDMARDs, axSpA patients and to test whether these sera influence differentiation of healthy monocytes towards osteoclast lineage. Methods Bone remodeling molecules (RANKL, M-CSF, OPG, IL-6, OSM, IL-17A, TGFβ, and TNFα) were evaluated in 27 patients with axSpA and 23 age and sex-matched controls. Disease activity (BASDAI, ASDAS) and inflammatory markers (ESR, CRP) were assessed. Monocytes obtained from healthy individuals were cultured in vitro in presence of sera from 11 randomly chosen axSpA patients and 10 controls, with addition of exogenous M-CSF and/or RANKL or without. Osteoclastic differentiation was assessed analyzing osteoclast markers (cathepsin K and RANK at mRNA level) and with osteoclast-specific staining. Results axSpA patients’ sera levels of soluble RANKL were significantly lower and M-CSF, IL-6, OSM, IL-17A and TNFα significantly higher in comparison to controls, whereas of OPG and TGFβ were comparable in both groups. Numbers of generated in vitro osteoclasts and cathepsin K mRNA levels did not differ between cultures supplemented with sera of healthy and axSpA patients, both in the absence and presence of M-CSF. Instead, addition of exogenous RANKL boosted osteoclastogenesis, which was significantly higher in cultures with axSpA sera. Furthermore, sera from axSpA patients induced substantially higher levels of RANK mRNA, independently of M-CSF and RANKL stimulation. Conclusion We show that, paradoxically, serum levels of soluble RANKL observed in axSpA are in fact significantly lower in comparison to healthy blood donors. Our results indicate that sera of axSpA patients - in contrary to healthy subjects - contain circulating, soluble factors (presumably IL-6, OSM, IL-17A, TNFα and others) able to stimulate healthy monocytes responsiveness to even relative low RANKL serum levels, by inducing high RANK mRNA expression and - as a net effect - boosting their osteoclastogenic potential. We suggest also that locally produced RANKL in axSpA may induce overactive osteoclasts from their precursors.
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Affiliation(s)
- Mariusz Korkosz
- Department of Rheumatology, Jagiellonian University Medical College, 10 Sniadeckich Str., Krakow, Poland
| | - Marcin Czepiel
- Department of Clinical Immunology, Institute of Paediatrics, Jagiellonian University Medical College, 265 Wielicka Str., 30-663, Krakow, Poland
| | - Zofia Guła
- Department of Rheumatology, Jagiellonian University Medical College, 10 Sniadeckich Str., Krakow, Poland
| | - Małgorzata Stec
- Department of Clinical Immunology, Institute of Paediatrics, Jagiellonian University Medical College, 265 Wielicka Str., 30-663, Krakow, Poland
| | - Kazimierz Węglarczyk
- Department of Clinical Immunology, Institute of Paediatrics, Jagiellonian University Medical College, 265 Wielicka Str., 30-663, Krakow, Poland
| | - Magdalena Rutkowska-Zapała
- Department of Clinical Immunology, Institute of Paediatrics, Jagiellonian University Medical College, 265 Wielicka Str., 30-663, Krakow, Poland
| | - Anna Gruca
- Department of Clinical Immunology, Institute of Paediatrics, Jagiellonian University Medical College, 265 Wielicka Str., 30-663, Krakow, Poland
| | - Marzena Lenart
- Department of Clinical Immunology, Institute of Paediatrics, Jagiellonian University Medical College, 265 Wielicka Str., 30-663, Krakow, Poland
| | - Jarosław Baran
- Department of Clinical Immunology, Institute of Paediatrics, Jagiellonian University Medical College, 265 Wielicka Str., 30-663, Krakow, Poland
| | - Jerzy Gąsowski
- Department of Internal Medicine and Gerontology, Jagiellonian University Medical College, 10 Sniadeckich Str., Krakow, Poland
| | - Przemysław Błyszczuk
- Department of Clinical Immunology, Institute of Paediatrics, Jagiellonian University Medical College, 265 Wielicka Str., 30-663, Krakow, Poland
| | - Maciej Siedlar
- Department of Clinical Immunology, Institute of Paediatrics, Jagiellonian University Medical College, 265 Wielicka Str., 30-663, Krakow, Poland.
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273
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Jatrorrhizine Hydrochloride Suppresses RANKL-Induced Osteoclastogenesis and Protects against Wear Particle-Induced Osteolysis. Int J Mol Sci 2018; 19:ijms19113698. [PMID: 30469456 PMCID: PMC6275021 DOI: 10.3390/ijms19113698] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2018] [Revised: 11/12/2018] [Accepted: 11/15/2018] [Indexed: 01/22/2023] Open
Abstract
Wear particle-induced aseptic prosthetic loosening is a major complication associated with total joint arthroplasty (TJA). A growing body of evidence suggests that receptor activator of nuclear factor κ-B ligand (RANKL)-stimulated osteoclastogenesis and bone resorption are responsible for peri-implant loosening. Thus, agents which attenuate excessive osteoclast differentiation and function have been considered to offer therapeutic potential for prolonging the life of TJA implants. Jatrorrhizine hydrochloride (JH), a major protoberberine alkaloid isolated from the traditional Chinese herb Coptis chinensis, has been reported to have antimicrobial, antitumor, and antihypercholesterolemic and neuroprotective activities. However, its effects on osteoclast biology remain unknown. Here, we found that JH inhibited RANKL-induced osteoclast formation and bone resorption in vitro and exerted protection against titanium (Ti) particle-induced osteolysis in vivo. Biochemical analysis demonstrated that JH suppressed RANKL-induced activation of MAPKs (p38 and ERK) which down-regulated the production of NFATc1 and NFATc1-regulated osteoclastic marker genes, such as TRAP, CTR and CTSK. Collectively, our findings suggest that JH may be a promising anti-osteoclastogenesis agent for treating periprosthetic osteolysis or other osteoclast-related osteolytic diseases.
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274
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Boyce BF, Li J, Xing L, Yao Z. Bone Remodeling and the Role of TRAF3 in Osteoclastic Bone Resorption. Front Immunol 2018; 9:2263. [PMID: 30323820 PMCID: PMC6172306 DOI: 10.3389/fimmu.2018.02263] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2018] [Accepted: 09/11/2018] [Indexed: 02/05/2023] Open
Abstract
Skeletal health is maintained by bone remodeling, a process in which microscopic sites of effete or damaged bone are degraded on bone surfaces by osteoclasts and subsequently replaced by new bone, which is laid down by osteoblasts. This normal process can be disturbed in a variety of pathologic processes, including localized or generalized inflammation, metabolic and endocrine disorders, primary and metastatic cancers, and during aging as a result of low-grade chronic inflammation. Osteoclast formation and activity are promoted by factors, including cytokines, hormones, growth factors, and free radicals, and require expression of macrophage-colony stimulating factor (M-CSF) and receptor activator of NF-κB ligand (RANKL) by accessory cells in the bone marrow, including osteoblastic and immune cells. Expression of TNF receptor-associated factor 6 (TRAF6) is required in osteoclast precursors to mediate RANKL-induced activation of NF-κB, which is also necessary for osteoclast formation and activity. TRAF3, in contrast is not required for osteoclast formation, but it limits RANKL-induced osteoclast formation by promoting proteasomal degradation of NF-κB-inducing kinase in a complex with TRAF2 and cellular inhibitor of apoptosis proteins (cIAP). TRAF3 also limits osteoclast formation induced by TNF, which mediates inflammation and joint destruction in inflammatory diseases, including rheumatoid arthritis. Chloroquine and hydroxychloroquine, anti-inflammatory drugs used to treat rheumatoid arthritis, prevent TRAF3 degradation in osteoclast precursors and inhibit osteoclast formation in vitro. Chloroquine also inhibits bone destruction induced by ovariectomy and parathyroid hormone in mice in vivo. Mice genetically engineered to have TRAF3 deleted in osteoclast precursors and macrophages develop early onset osteoporosis, inflammation in multiple tissues, infections, and tumors, indicating that TRAF3 suppresses inflammation and tumors in myeloid cells. Mice with TRAF3 conditionally deleted in mesenchymal cells also develop early onset osteoporosis due to a combination of increased osteoclast formation and reduced osteoblast formation. TRAF3 protein levels decrease in bone and bone marrow during aging in mice and humans. Development of drugs to prevent TRAF3 degradation in immune and bone cells could be a novel therapeutic approach to prevent or reduce bone loss and the incidence of several common diseases associated with aging.
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Affiliation(s)
- Brendan F. Boyce
- Department of Pathology and Laboratory Medicine, Center for Musculoskeletal Research, University of Rochester Medical Center, Rochester, NY, United States
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275
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Kim H, Lee S, Lee SW. TRAF6 Distinctly Regulates Hematopoietic Stem and Progenitors at Different Periods of Development in Mice. Mol Cells 2018; 41:753-761. [PMID: 30037215 PMCID: PMC6125416 DOI: 10.14348/molcells.2018.0191] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2018] [Revised: 06/14/2018] [Accepted: 06/19/2018] [Indexed: 12/27/2022] Open
Abstract
Tumor necrosis factor receptor-associated factor 6 (TRAF6) is identified as a signaling adaptor protein that regulates bone metabolism, immunity, and the development of several tissues. Therefore, its functions are closely associated with multiple diseases. TRAF6 is also involved in the regulation of hematopoiesis under steady-state conditions, but the role of TRAF6 in modulating hematopoietic stem and progenitor cells (HSPCs) during the developmental stages remains unknown. Here, we report that the deletion of TRAF6 in hematopoietic lineage cells resulted in the upregulation of HSPCs in the fetal liver at the prenatal period. However, in the early postnatal period, deletion of TRAF6 drastically diminished HSPCs in the bone marrow (BM), with severe defects in BM development and extramedullary hematopoiesis in the spleen being identified. In the analysis of adult HSPCs in a BM reconstitution setting, TRAF6 played no significant role in HSPC homeostasis, albeit it affected the development of T cells. Taken together, our results suggest that the role of TRAF6 in regulating HSPCs is altered in a spatial and temporal manner during the developmental course of mice.
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Affiliation(s)
- Hyekang Kim
- Division of Integrative Biosciences and Biotechnology, Pohang University of Science and Technology, Pohang 37673,
Korea
| | - Seungwon Lee
- Division of Integrative Biosciences and Biotechnology, Pohang University of Science and Technology, Pohang 37673,
Korea
| | - Seung-Woo Lee
- Division of Integrative Biosciences and Biotechnology, Pohang University of Science and Technology, Pohang 37673,
Korea
- Department of Life Sciences, Pohang University of Science and Technology, Pohang 37673,
Korea
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276
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Zarei A, Yang C, Gibbs J, Davis JL, Ballard A, Zeng R, Cox L, Veis DJ. Manipulation of the Alternative NF-κB Pathway in Mice Has Sexually Dimorphic Effects on Bone. JBMR Plus 2018; 3:14-22. [PMID: 30680359 PMCID: PMC6339559 DOI: 10.1002/jbm4.10066] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/28/2018] [Revised: 05/21/2018] [Accepted: 06/08/2018] [Indexed: 12/26/2022] Open
Abstract
Alternative NF‐κB signaling promotes osteoclastogenesis and pathological bone loss, but the effect of sex on phenotype has not been explored. We disrupted alternative NF‐κB signaling by deletion of upstream kinase NF‐κB‐inducing kinase (NIK) or NF‐κB subunit RelB and found that both NIK‐deficient and RelB‐deficient female mice possessed more than twofold higher trabecular bone mass compared to controls, whereas no differences were observed in males. In vitro, RelB‐deficient precursors from female mice showed a more severe osteoclast (OC) differentiation defect than male, while WT had no sex bias. Next, we asked whether pharmacologic activation of alternative NF‐κB by inhibitor of apoptosis (IAP) antagonist BV6 has sex‐dependent effects on bone. Unlike male mice that lost bone, female mice on BV6 for 4 weeks showed no changes in either trabecular bone mass or OC number. Because estrogen generally suppresses NF‐κB, we hypothesized that estrogen protects bone from BV6 effects in vivo. Thus, we performed ovariectomy or sham surgery in female mice, then treated with BV6 or vehicle for 4 weeks. Although ovariectomy caused bone loss, BV6 did not have any additional impact, suggesting that direct estrogen effects do not cause resistance to BV6 in vivo. The osteopenic effects of IAP antagonists in males may have implications for their use in cancer therapy. © 2018 The Authors. JBMR Plus published by Wiley Periodicals, Inc. on behalf of American Society for Bone and Mineral Research.
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Affiliation(s)
- Allahdad Zarei
- Musculoskeletal Research Center Division of Bone and Mineral Diseases Department of Medicine Washington University School of Medicine St. Louis MO USA
| | - Chang Yang
- Musculoskeletal Research Center Division of Bone and Mineral Diseases Department of Medicine Washington University School of Medicine St. Louis MO USA
| | - Jesse Gibbs
- Musculoskeletal Research Center Division of Bone and Mineral Diseases Department of Medicine Washington University School of Medicine St. Louis MO USA
| | - Jennifer L Davis
- Musculoskeletal Research Center Division of Bone and Mineral Diseases Department of Medicine Washington University School of Medicine St. Louis MO USA
| | - Anna Ballard
- Musculoskeletal Research Center Division of Bone and Mineral Diseases Department of Medicine Washington University School of Medicine St. Louis MO USA
| | - Rong Zeng
- Musculoskeletal Research Center Division of Bone and Mineral Diseases Department of Medicine Washington University School of Medicine St. Louis MO USA
| | - Linda Cox
- Musculoskeletal Research Center Division of Bone and Mineral Diseases Department of Medicine Washington University School of Medicine St. Louis MO USA
| | - Deborah J Veis
- Musculoskeletal Research Center Division of Bone and Mineral Diseases Department of Medicine Washington University School of Medicine St. Louis MO USA.,Department of Pathology and Immunology Washington University School of Medicine St. Louis MO USA
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277
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Tzeng HE, Huang PH, Tsai CH, Tsay GJ, Lee YJ, Huang TJ, Lin TH, Chiu YM, Wu YY. Isosteviol Derivative Inhibits Osteoclast Differentiation and Ameliorates Ovariectomy-Induced Osteoporosis. Sci Rep 2018; 8:11190. [PMID: 30046042 PMCID: PMC6060097 DOI: 10.1038/s41598-018-29257-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2017] [Accepted: 07/09/2018] [Indexed: 12/29/2022] Open
Abstract
NC-8 (ent-16-oxobeyeran-19-N-methylureido) is an isosteviol-derived analogue with multiple biological effects, including anti-inflammation and anti-bacterial activities and inhibition of HBV viral surface antigen gene expression. In this study, we explored the effects of NC-8 on the formation of osteoclasts from RAW 264.7 cells. We found that NC-8 exerts the novel effect of inhibiting osteoclast-like cell formation. Our experiments showed that RANKL-induced ERK, p38, and JNK phosphorylation were inhibited by NC-8. An ovariectomy-induced osteoporosis animal model was used to examine the protective effects of oral treatment with NC-8. Serum analysis was used to examine markers of osteoblasts, osteoclasts, and renal and hepatic function in rats. Micro CT scanning and histological analysis were used to measure bone loss in ovariectomized rats. Oral administration of NC-8 effectively decreased excess bone resorption and significantly antagonized trabecular bone loss in ovariectomized rats. Serum analysis of C-terminal telopeptide of type-I collagen, an osteoclast marker, also showed that NC-8 administration inhibited excess bone resorption. Furthermore, serum analysis showed that renal and liver function were not affected by these doses of NC-8 during long-term treatment. Our results demonstrate that NC-8 inhibits osteoclast differentiation and effectively ameliorates ovariectomy-induced osteoporosis.
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Affiliation(s)
- Huey-En Tzeng
- Taipei Cancer Center, Taipei Medical University, Taipei, Taiwan.,Graduate Institute of Cancer Biology and Drug Discovery, College of Medical Science and Technology, Taipei Medical University, Taipei, Taiwan.,Department of Internal Medicine, Division of Hematology/Oncology, Taipei Medical University - Shuang Ho Hospital, Taipei, Taiwan
| | - Po-Hao Huang
- Department of Internal Medicine, School of Medicine, China Medical University Hospital and China Medical University, Taichung, Taiwan.,Division of Immunology and Rheumatology, Department of Internal Medicine, China Medical University Hospital, Taichung, Taiwan
| | - Chun-Hao Tsai
- Department of Orthopedics, School of Medicine, China Medical University Hospital and China Medical University, Taichung, Taiwan
| | - Gregory J Tsay
- Department of Internal Medicine, School of Medicine, China Medical University Hospital and China Medical University, Taichung, Taiwan.,Division of Immunology and Rheumatology, Department of Internal Medicine, China Medical University Hospital, Taichung, Taiwan
| | - Yi-Ju Lee
- Institute of Biochemistry, Microbiology and Immunology, Chung Shan Medical University, Taichung, Taiwan
| | - Tsurng-Juhn Huang
- Department of Biochemistry, China Medical University, Taichung, Taiwan
| | - Tzu-Hung Lin
- Material and Chemical Research Laboratories, Industrial Technology Research Institute, Chutung, Hsinchu County, Taiwan
| | - Ying-Ming Chiu
- Division of Allergy, Immunology & Rheumatology, Changhua Christian Hospital, Changhua, Taiwan.,Department of Nursing, College of Medicine & Nursing, Hungkuang University, Taichung, Taiwan
| | - Yi-Ying Wu
- Department of Medical Laboratory Science and Biotechnology, China Medical University, Taichung, Taiwan. .,Chinese Medicine Research Center, China Medical University, Taichung, Taiwan. .,Research Center for Chinese Herbal Medicine, China Medical University, Taichung, Taiwan.
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278
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Tsuru M, Ono A, Umeyama H, Takeuchi M, Nagata K. Ubiquitin-dependent proteolysis of CXCL7 leads to posterior longitudinal ligament ossification. PLoS One 2018; 13:e0196204. [PMID: 29782494 PMCID: PMC5962073 DOI: 10.1371/journal.pone.0196204] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2017] [Accepted: 04/09/2018] [Indexed: 11/18/2022] Open
Abstract
Ossification of the posterior longitudinal ligament (OPLL), a spinal ligament, reduces the range of motion in limbs. No treatment is currently available for OPLL, which is why therapies are urgently needed. OPLL occurs in obesity, is more common in men, and has an onset after 40 years of age. The mechanisms underlying OPLL remain unclear. In this study, we performed a serum proteomic analysis in both OPLL patients and healthy subjects to identify factors potentially involved in the development of OPLL, and found reduced levels of a protein that might underlie the pathology of OPLL. We isolated the protein, determined its amino acid sequence, and identified it as chemokine (C-X-C motif) ligand 7 (CXCL7). Based on these proteomics findings, we generated a CXCL7 knockout mouse model to study the molecular mechanisms underlying OPLL. CXCL7-null mice presented with a phenotype of OPLL, showing motor impairment, heterotopic ossification in the posterior ligament tissue, and osteoporosis in vertebrate tissue. To identify the mechanisms of CXCL7 deficiency in OPLL, we searched for single nucleotide polymorphisms and altered DNA exons, but no abnormalities were found. Although miR-340 levels were found to be high in an miRNA array, they were insufficient to reduce CXCL7 levels. Ubiquitin C-terminal hydrolase1 (UCHL1) was found to be overexpressed in CXCL7-null mice and in the sera of patients with OPLL, and was correlated with OPLL severity. Post-translational modifications of proteins with ubiquitin and ubiquitin-like modifiers, orchestrated by a cascade of specialized ubiquitin activating enzyme (E1), ubiquitin conjugating enzyme (E2), and ubiquitin ligase (E3) enzymes, are thought to control a wide range of cellular processes, and alterations in the ubiquitin–proteasome system have been associated with several degenerative disorders. In addition, the OPLL tissue of CXCL7-null mouse and its primary cells expressed the antibody to ubiquitin (linkage-specific K48). Our data clearly show decreased CXCL7 levels in patients with OPLL, and that OPLL developed in mice lacking CXCL7. Tumor necrosis factor receptor-associated factor (TRAF)6 expression was decreased in CXCL7-null mouse primary cells. Furthermore, K48 polyubiquitination was found in posterior longitudinal ligament ossified tissue and primary cells from CXCL7-null mice. We performed a phosphoproteomics analysis in CXCL7-deficient mice and identified increased phosphorylation of mitogen-activated protein kinase kinase (ME3K)15, ubiquitin protein ligase E3C (UBE3C) and protein kinase C (PKC) alpha, suggesting that ubiquitin-dependent degradation is involved in CXCL7 deficiency. Future studies in the CXCL7-null mouse model are, therefore, warranted to investigate the role of ubiquitination in the onset of OPLL. In conclusion, CXCL7 levels may be useful as a serum marker for the progression of OPLL. This study also suggests that increasing CXCL7 levels in patients can serve as an effective therapeutic strategy for the treatment of OPLL.
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Affiliation(s)
- Michiyo Tsuru
- Clinical Proteomics and Gene Therapy Laboratory, Kurume University, Fukuoka, Japan
| | - Atsushi Ono
- Department of Orthopaedic Surgery, Hirosaki Memorial Hospital, Hirosaki, Japan
| | - Hideaki Umeyama
- Department of Biological Science, Chuo University, Tokyo, Japan
| | - Masahiro Takeuchi
- Department of Clinical Medicine (Biostatistics), Kitasato University School of Pharmacy, Tokyo, Japan
| | - Kensei Nagata
- Department of Orthopaedic Surgery, Kurume University School of Medicine, Fukuoka, Japan
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279
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A novel miR17/protein tyrosine phosphatase-oc/EphA4 regulatory axis of osteoclast activity. Arch Biochem Biophys 2018; 650:30-38. [PMID: 29763590 PMCID: PMC5985224 DOI: 10.1016/j.abb.2018.05.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2018] [Revised: 05/08/2018] [Accepted: 05/11/2018] [Indexed: 12/17/2022]
Abstract
Information about the molecular mechanisms leading to the activation of the osteoclast is relatively limited. While there is compelling evidence that the signaling mechanisms of Src and integrin β3 are essential for osteoclast activation, the regulation of these two signaling mechanisms is not fully understood. In this review, evidence supporting a novel regulatory axis of osteoclast activation that plays an upstream regulatory role in both the Src and integrin β3 signaling during osteoclast activation is discussed. This regulatory axis contains three unique components: a structurally unique transmembrane protein-tyrosine phosphatase, PTP-oc, EphA4, and miR17. In the first component, PTP-oc activates the Src signaling through dephosphorylation of the inhibitory tyr-527 of Src. This in turn activates the integrin β3 signaling, enhances the JNK2/NFκB signaling, promotes the ITAM/Syk signaling, and suppresses the ITIM/Shp1 signaling; the consequence of which is activation of the osteoclast. In the second component, EphA4 inhibits osteoclast activity by suppressing the integrin β3 signaling. PTP-oc relieves the suppressive actions of EphA4 by directly dephosphorylating EphA4. In the third component, PTP-oc expression is negatively regulated by miR17. Accordingly, suppression of miR17 during osteoclast activation upregulates the PTP-oc signaling and suppresses the EphA4 signaling, resulting in the activation of the osteoclast. This regulatory axis is unique, in that each of the three components acts to exert suppressive action on their respective immediate downstream inhibitory step. Because the final downstream event is the EphA4-mediated inhibition of osteoclast activation, the overall effect of this mechanism is the stimulation of osteoclast activity.
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