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Kim M, Park JH, Go M, Lee N, Seo J, Lee H, Kim D, Ha H, Kim T, Jeong MS, Kim S, Kim T, Kim HS, Kang D, Shim H, Lee SY. RUFY4 deletion prevents pathological bone loss by blocking endo-lysosomal trafficking of osteoclasts. Bone Res 2024; 12:29. [PMID: 38744829 PMCID: PMC11094054 DOI: 10.1038/s41413-024-00326-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2023] [Revised: 02/01/2024] [Accepted: 03/08/2024] [Indexed: 05/16/2024] Open
Abstract
Mature osteoclasts degrade bone matrix by exocytosis of active proteases from secretory lysosomes through a ruffled border. However, the molecular mechanisms underlying lysosomal trafficking and secretion in osteoclasts remain largely unknown. Here, we show with GeneChip analysis that RUN and FYVE domain-containing protein 4 (RUFY4) is strongly upregulated during osteoclastogenesis. Mice lacking Rufy4 exhibited a high trabecular bone mass phenotype with abnormalities in osteoclast function in vivo. Furthermore, deleting Rufy4 did not affect osteoclast differentiation, but inhibited bone-resorbing activity due to disruption in the acidic maturation of secondary lysosomes, their trafficking to the membrane, and their secretion of cathepsin K into the extracellular space. Mechanistically, RUFY4 promotes late endosome-lysosome fusion by acting as an adaptor protein between Rab7 on late endosomes and LAMP2 on primary lysosomes. Consequently, Rufy4-deficient mice were highly protected from lipopolysaccharide- and ovariectomy-induced bone loss. Thus, RUFY4 plays as a new regulator in osteoclast activity by mediating endo-lysosomal trafficking and have a potential to be specific target for therapies against bone-loss diseases such as osteoporosis.
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Affiliation(s)
- Minhee Kim
- Department of Life Science, Ewha Womans University, Seoul, 03760, South Korea
| | - Jin Hee Park
- Department of Life Science, Ewha Womans University, Seoul, 03760, South Korea
- The Research Center for Cellular Homeostasis, Ewha Womans University, Seoul, 03760, South Korea
| | - Miyeon Go
- Department of Life Science, Ewha Womans University, Seoul, 03760, South Korea
| | - Nawon Lee
- Department of Life Science, Ewha Womans University, Seoul, 03760, South Korea
| | - Jeongin Seo
- Department of Life Science, Ewha Womans University, Seoul, 03760, South Korea
| | - Hana Lee
- Department of Biomedical Engineering, Yonsei University, Wonju, 26493, South Korea
| | - Doyong Kim
- Department of Biomedical Engineering, Yonsei University, Wonju, 26493, South Korea
| | - Hyunil Ha
- KM Convergence Research Division, Korea Institute of Oriental Medicine, Daejeon, 34054, South Korea
| | - Taesoo Kim
- KM Convergence Research Division, Korea Institute of Oriental Medicine, Daejeon, 34054, South Korea
| | - Myeong Seon Jeong
- Chuncheon Center, Korea Basic Science Institute, Chuncheon, 24341, South Korea
| | - Suree Kim
- Fluorescence Core Imaging Center and Bioimaging Data Curation Center, Ewha Womans University, Seoul, 03760, South Korea
| | - Taesoo Kim
- Department of Life Science, Ewha Womans University, Seoul, 03760, South Korea
- The Research Center for Cellular Homeostasis, Ewha Womans University, Seoul, 03760, South Korea
- Multitasking Macrophage Research Center, Ewha Womans University, Seoul, 03760, South Korea
| | - Han Sung Kim
- Department of Biomedical Engineering, Yonsei University, Wonju, 26493, South Korea
| | - Dongmin Kang
- Department of Life Science, Ewha Womans University, Seoul, 03760, South Korea
- Fluorescence Core Imaging Center and Bioimaging Data Curation Center, Ewha Womans University, Seoul, 03760, South Korea
| | - Hyunbo Shim
- Department of Life Science, Ewha Womans University, Seoul, 03760, South Korea
| | - Soo Young Lee
- Department of Life Science, Ewha Womans University, Seoul, 03760, South Korea.
- The Research Center for Cellular Homeostasis, Ewha Womans University, Seoul, 03760, South Korea.
- Multitasking Macrophage Research Center, Ewha Womans University, Seoul, 03760, South Korea.
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Shindo S, Pierrelus R, Ikeda A, Nakamura S, Heidari A, Pastore MR, Leon E, Ruiz S, Chheda H, Khatiwala R, Kumagai T, Tolson G, Elderbashy I, Ouhara K, Han X, Hernandez M, Vardar-Sengul S, Shiba H, Kawai T. Extracellular Release of Citrullinated Vimentin Directly Acts on Osteoclasts to Promote Bone Resorption in a Mouse Model of Periodontitis. Cells 2023; 12:1109. [PMID: 37190018 PMCID: PMC10136503 DOI: 10.3390/cells12081109] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Revised: 03/21/2023] [Accepted: 03/29/2023] [Indexed: 05/17/2023] Open
Abstract
Elevated osteoclast (OC)-mediated bone resorption, a common pathological feature between periodontitis and rheumatoid arthritis (RA), implicates a possible mutually shared pathogenesis. The autoantibody to citrullinated vimentin (CV), a representative biomarker of RA, is reported to promote osteoclastogenesis (OC-genesis). However, its effect on OC-genesis in the context of periodontitis remains to be elucidated. In an in vitro experiment, the addition of exogenous CV upregulated the development of Tartrate-resistant acid phosphatase (TRAP)-positive multinuclear OCs from mouse bone marrow cells and increased the formation of resorption pits. However, Cl-amidine, an irreversible pan-peptidyl arginine deiminase (PAD) inhibitor, suppressed the production and secretion of CV from RANKL-stimulated OC precursors, suggesting that the citrullination of vimentin occurs in OC precursors. On the other hand, the anti-vimentin neutralizing antibody suppressed in vitro Receptor activator of nuclear factor kappa-Β ligand (RANKL)-induced OC-genesis. The CV-induced upregulation of OC-genesis was abrogated by the Protein kinase C (PKC)-δ inhibitor Rottlerin, accompanied by the downmodulation of OC-genesis-related genes, including Osteoclast stimulatory transmembrane protein (OC-STAMP), TRAP and Matrix Metallopeptidase 9 (MMP9) as well as extracellular signal-regulated kinase (ERK) mitogen-activated protein (MAP)-kinase phosphorylation. Elevated levels of soluble CV and vimentin-bearing mononuclear cells were found in the bone resorption lesions of periodontitis induced in mice in the absence of an anti-CV antibody. Finally, local injection of anti-vimentin neutralizing antibody suppressed the periodontal bone loss induced in mice. Collectively, these results indicated that the extracellular release of CV promoted OC-genesis and bone resorption in periodontitis.
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Affiliation(s)
- Satoru Shindo
- Department of Oral Science and Translational Research, College of Dental Medicine, Nova Southeastern University, 3200 South University Drive, Fort Lauderdale, FL 33328, USA
| | - Roodelyne Pierrelus
- Department of Oral Science and Translational Research, College of Dental Medicine, Nova Southeastern University, 3200 South University Drive, Fort Lauderdale, FL 33328, USA
| | - Atsushi Ikeda
- Department of Periodontics and Endodontics, Okayama University Hospital, 2-5-1 Shikata-cho, Kita-ku, Okayama 700-8525, Japan
| | - Shin Nakamura
- Department of Oral Science and Translational Research, College of Dental Medicine, Nova Southeastern University, 3200 South University Drive, Fort Lauderdale, FL 33328, USA
| | - Alireza Heidari
- Department of Oral Science and Translational Research, College of Dental Medicine, Nova Southeastern University, 3200 South University Drive, Fort Lauderdale, FL 33328, USA
| | - Maria Rita Pastore
- Department of Oral Science and Translational Research, College of Dental Medicine, Nova Southeastern University, 3200 South University Drive, Fort Lauderdale, FL 33328, USA
| | - Elizabeth Leon
- Department of Oral Science and Translational Research, College of Dental Medicine, Nova Southeastern University, 3200 South University Drive, Fort Lauderdale, FL 33328, USA
| | - Sunniva Ruiz
- Department of Oral Science and Translational Research, College of Dental Medicine, Nova Southeastern University, 3200 South University Drive, Fort Lauderdale, FL 33328, USA
| | - Harsh Chheda
- Department of Oral Science and Translational Research, College of Dental Medicine, Nova Southeastern University, 3200 South University Drive, Fort Lauderdale, FL 33328, USA
| | - Rhea Khatiwala
- Department of Oral Science and Translational Research, College of Dental Medicine, Nova Southeastern University, 3200 South University Drive, Fort Lauderdale, FL 33328, USA
| | - Tomoki Kumagai
- Department of Oral Science and Translational Research, College of Dental Medicine, Nova Southeastern University, 3200 South University Drive, Fort Lauderdale, FL 33328, USA
- Department of Biological Endodontics, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima 734-8553, Japan
| | - George Tolson
- Department of Periodontology, College of Dental Medicine, Nova Southeastern University, 3200 South University Drive, Fort Lauderdale, FL 33328, USA
| | - Islam Elderbashy
- Department of Periodontology, College of Dental Medicine, Nova Southeastern University, 3200 South University Drive, Fort Lauderdale, FL 33328, USA
| | - Kazuhisa Ouhara
- Department of Periodontal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima 734-8553, Japan
| | - Xiaozhe Han
- Department of Oral Science and Translational Research, College of Dental Medicine, Nova Southeastern University, 3200 South University Drive, Fort Lauderdale, FL 33328, USA
| | - Maria Hernandez
- Department of Periodontology, College of Dental Medicine, Nova Southeastern University, 3200 South University Drive, Fort Lauderdale, FL 33328, USA
| | - Saynur Vardar-Sengul
- Department of Periodontology, College of Dental Medicine, Nova Southeastern University, 3200 South University Drive, Fort Lauderdale, FL 33328, USA
| | - Hideki Shiba
- Department of Biological Endodontics, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima 734-8553, Japan
| | - Toshihisa Kawai
- Department of Oral Science and Translational Research, College of Dental Medicine, Nova Southeastern University, 3200 South University Drive, Fort Lauderdale, FL 33328, USA
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Liu D, Li X, Zhang L, Hu B, Hu S, Zhang X, Hu J. Small molecule inhibitors of osteoarthritis: Current development and future perspective. Front Physiol 2023; 14:1156913. [PMID: 37089415 PMCID: PMC10119395 DOI: 10.3389/fphys.2023.1156913] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Accepted: 03/28/2023] [Indexed: 04/25/2023] Open
Abstract
Osteoarthritis (OA) is one of the common degenerative joint diseases in clinic. It mainly damages articular cartilage, causing pain, swelling and stiffness around joints, and is the main cause of disability of the elderly. Due to the unclear pathogenesis of osteoarthritis and the poor self-healing ability of articular cartilage, the treatment options for this disease are limited. At present, NSAIDs, Glucocorticoid and Duloxetine are the most commonly used treatment choice for osteoarthritis. Although it is somewhat effective, the adverse reactions are frequent and serious. The development of safer and more effective anti-osteoarthritis drugs is essential and urgent. This review summarizes recent advances in the pharmacological treatment of OA, focusing on small molecule inhibitors targeting cartilage remodeling in osteoarthritis as well as the research idea of reducing adverse effects by optimizing the dosage form of traditional drugs for the treatment of osteoarthritis. It should provide a reference for exploration of new potential treatment options.
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Affiliation(s)
- Dan Liu
- Department of Pharmacy, The First Affiliated Hospital of Army Medical University (Third Military Medical University), Chongqing, China
| | - Xingxing Li
- Department of Pharmacy, The First Affiliated Hospital of Army Medical University (Third Military Medical University), Chongqing, China
| | - Lin Zhang
- Department of Pharmacy, The First Affiliated Hospital of Army Medical University (Third Military Medical University), Chongqing, China
| | - Bin Hu
- Department of Pharmacy, The First Affiliated Hospital of Army Medical University (Third Military Medical University), Chongqing, China
| | - Sang Hu
- Department of Pharmacy, The First Affiliated Hospital of Army Medical University (Third Military Medical University), Chongqing, China
| | - Xiao Zhang
- Institute of Pathology, The First Affiliated Hospital of Army Medical University (Third Military Medical University), Chongqing, China
- Chongqing Institute of Advanced Pathology, Jinfeng Laboratory, Chongqing, China
- *Correspondence: Xiao Zhang, ; Jing Hu,
| | - Jing Hu
- Department of Pharmacy, The First Affiliated Hospital of Army Medical University (Third Military Medical University), Chongqing, China
- *Correspondence: Xiao Zhang, ; Jing Hu,
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Loots DT, Adeniji AA, Van Reenen M, Ozturk M, Brombacher F, Parihar SP. The metabolomics of a protein kinase C delta (PKCδ) knock-out mouse model. Metabolomics 2022; 18:92. [PMID: 36371785 PMCID: PMC9660189 DOI: 10.1007/s11306-022-01949-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/26/2022] [Accepted: 10/29/2022] [Indexed: 11/15/2022]
Abstract
INTRODUCTION PKCδ is ubiquitously expressed in mammalian cells and its dysregulation plays a key role in the onset of several incurable diseases and metabolic disorders. However, much remains unknown about the metabolic pathways and disturbances induced by PKC deficiency, as well as the metabolic mechanisms involved. OBJECTIVES This study aims to use metabolomics to further characterize the function of PKC from a metabolomics standpoint, by comparing the full serum metabolic profiles of PKC deficient mice to those of wild-type mice. METHODS The serum metabolomes of PKCδ knock-out mice were compared to that of a wild-type strain using a GCxGC-TOFMS metabolomics research approach and various univariate and multivariate statistical analyses. RESULTS Thirty-seven serum metabolite markers best describing the difference between PKCδ knock-out and wild-type mice were identified based on a PCA power value > 0.9, a t-test p-value < 0.05, or an effect size > 1. XERp prediction was also done to accurately select the metabolite markers within the 2 sample groups. Of the metabolite markers identified, 78.4% (29/37) were elevated and 48.65% of these markers were fatty acids (18/37). It is clear that a total loss of PKCδ functionality results in an inhibition of glycolysis, the TCA cycle, and steroid synthesis, accompanied by upregulation of the pentose phosphate pathway, fatty acids oxidation, cholesterol transport/storage, single carbon and sulphur-containing amino acid synthesis, branched-chain amino acids (BCAA), ketogenesis, and an increased cell signalling via N-acetylglucosamine. CONCLUSION The charaterization of the dysregulated serum metabolites in this study, may represent an additional tool for the early detection and screening of PKCδ-deficiencies or abnormalities.
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Affiliation(s)
- Du Toit Loots
- Human Metabolomics, North-West University, Hoffman Street, 2531, Potchefstroom, South Africa.
| | | | - Mari Van Reenen
- Human Metabolomics, North-West University, Hoffman Street, 2531, Potchefstroom, South Africa
| | - Mumin Ozturk
- Human Metabolomics, North-West University, Hoffman Street, 2531, Potchefstroom, South Africa
- International Centre for Genetic Engineering and Biotechnology (ICGEB), Cape Town-Component, Cape Town, South Africa
| | - Frank Brombacher
- Human Metabolomics, North-West University, Hoffman Street, 2531, Potchefstroom, South Africa
- International Centre for Genetic Engineering and Biotechnology (ICGEB), Cape Town-Component, Cape Town, South Africa
- Institute of Infectious Diseases and Molecular Medicine (IDM), Division of Immunology and South African Medical Research Council (SAMRC) Immunology of Infectious Diseases, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa
- Wellcome Center for Infectious Disease Research in Africa (CIDRI-Africa), Institute of Infectious Diseases and Molecular Medicine (IDM), Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa
| | - Suraj P Parihar
- Human Metabolomics, North-West University, Hoffman Street, 2531, Potchefstroom, South Africa.
- International Centre for Genetic Engineering and Biotechnology (ICGEB), Cape Town-Component, Cape Town, South Africa.
- Institute of Infectious Diseases and Molecular Medicine (IDM), Division of Immunology and South African Medical Research Council (SAMRC) Immunology of Infectious Diseases, Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa.
- Wellcome Center for Infectious Disease Research in Africa (CIDRI-Africa), Institute of Infectious Diseases and Molecular Medicine (IDM), Faculty of Health Sciences, University of Cape Town, Cape Town, South Africa.
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Wu MH, Hsu WB, Chen MH, Shi CS. Inhibition of Neddylation Suppresses Osteoclast Differentiation and Function In Vitro and Alleviates Osteoporosis In Vivo. Biomedicines 2022; 10:2355. [PMID: 36289618 PMCID: PMC9598818 DOI: 10.3390/biomedicines10102355] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2022] [Revised: 09/08/2022] [Accepted: 09/13/2022] [Indexed: 09/20/2023] Open
Abstract
Neddylation, or the covalent addition of NEDD8 to specific lysine residue of proteins, is a reversible posttranslational modification, which regulates numerous biological functions; however, its involvement and therapeutic significance in osteoporosis remains unknown. Our results revealed that during the soluble receptor activator of nuclear factor-κB ligand (sRANKL)-stimulated osteoclast differentiation, the neddylation and expression of UBA3, the NEDD8-activating enzyme (NAE) catalytic subunit, were dose- and time-dependently upregulated in RAW 264.7 macrophages. UBA3 knockdown for diminishing NAE activity or administering low doses of the NAE inhibitor MLN4924 significantly suppressed sRANKL-stimulated osteoclast differentiation and bone-resorbing activity in the macrophages by inhibiting sRANKL-stimulated neddylation and tumor necrosis factor receptor-associated factor 6 (TRAF6)-activated transforming growth factor-β-activated kinase 1 (TAK1) downstream signaling for diminishing nuclear factor-activated T cells c1 (NFATc1) expression. sRANKL enhanced the interaction of TRAF6 with the neddylated proteins and the polyubiquitination of TRAF6's lysine 63, which activated TAK1 downstream signaling; however, this process was inhibited by MLN4924. MLN4924 significantly reduced osteoporosis in an ovariectomy- and sRANKL-induced osteoporosis mouse model in vivo. Our novel finding was that NAE-mediated neddylation participates in RANKL-activated TRAF6-TAK1-NFATc1 signaling during osteoclast differentiation and osteoporosis, suggesting that neddylation may be a new target for treating osteoporosis.
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Affiliation(s)
- Meng-Huang Wu
- Department of Orthopaedics, School of Medicine, College of Medicine, Taipei Medical University, Taipei 11031, Taiwan
- Department of Orthopedics, Taipei Medical University Hospital, Taipei 11031, Taiwan
- TMU Biodesign Center, Taipei Medical University, Taipei 11031, Taiwan
| | - Wei-Bin Hsu
- Sports Medicine Center, Chang Gung Memorial Hospital, Puzi 61301, Taiwan
| | - Mei-Hsin Chen
- Sports Medicine Center, Chang Gung Memorial Hospital, Puzi 61301, Taiwan
| | - Chung-Sheng Shi
- Graduate Institute of Clinical Medical Sciences, College of Medicine, Chang Gung University, Taoyuan 33332, Taiwan
- Colon and Rectal Surgery, Department of Surgery, Chiayi Chang Gung Memorial Hospital, Puzi 61301, Taiwan
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PKCδ deficiency inhibits fetal development and is associated with heart elastic fiber hyperplasia and lung inflammation in adult PKCδ knockout mice. PLoS One 2021; 16:e0253912. [PMID: 34197550 PMCID: PMC8248728 DOI: 10.1371/journal.pone.0253912] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2020] [Accepted: 06/15/2021] [Indexed: 12/12/2022] Open
Abstract
Protein kinase C-delta (PKCδ) has a caspase-3 recognition sequence in its structure, suggesting its involvement in apoptosis. In addition, PKCδ was recently reported to function as an anti-cancer factor. The generation of a PKCδ knockout mouse model indicated that PKCδ plays a role in B cell homeostasis. However, the Pkcrd gene, which is regulated through complex transcription, produces multiple proteins via alternative splicing. Since gene mutations can result in the loss of function of molecular species required for each tissue, in the present study, conditional PKCδ knockout mice lacking PKCδI, II, IV, V, VI, and VII were generated to enable tissue-specific deletion of PKCδ using a suitable Cre mouse. We generated PKCδ-null mice that lacked whole-body expression of PKCδ. PKCδ+/- parental mice gave birth to only 3.4% PKCδ-/- offsprings that deviated significantly from the expected Mendelian ratio (χ2(2) = 101.7, P < 0.001). Examination of mice on embryonic day 11.5 (E11.5) showed the proportion of PKCδ-/- mice implanted in the uterus in accordance with Mendelian rules; however, approximately 70% of the fetuses did not survive at E11.5. PKCδ-/- mice that survived until adulthood showed enlarged spleens, with some having cardiac and pulmonary abnormalities. Our findings suggest that the lack of PKCδ may have harmful effects on fetal development, and heart and lung functions after birth. Furthermore, our study provides a reference for future studies on PKCδ deficient mice that would elucidate the effects of the multiple protein variants in mice and decipher the roles of PKCδ in various diseases.
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Place DE, Malireddi RKS, Kim J, Vogel P, Yamamoto M, Kanneganti TD. Osteoclast fusion and bone loss are restricted by interferon inducible guanylate binding proteins. Nat Commun 2021; 12:496. [PMID: 33479228 PMCID: PMC7820603 DOI: 10.1038/s41467-020-20807-8] [Citation(s) in RCA: 45] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Accepted: 12/14/2020] [Indexed: 02/07/2023] Open
Abstract
Chronic inflammation during many diseases is associated with bone loss. While interferons (IFNs) are often inhibitory to osteoclast formation, the complex role that IFN and interferon-stimulated genes (ISGs) play in osteoimmunology during inflammatory diseases is still poorly understood. We show that mice deficient in IFN signaling components including IFN alpha and beta receptor 1 (IFNAR1), interferon regulatory factor 1 (IRF1), IRF9, and STAT1 each have reduced bone density and increased osteoclastogenesis compared to wild type mice. The IFN-inducible guanylate-binding proteins (GBPs) on mouse chromosome 3 (GBP1, GBP2, GBP3, GBP5, GBP7) are required to negatively regulate age-associated bone loss and osteoclastogenesis. Mechanistically, GBP2 and GBP5 both negatively regulate in vitro osteoclast differentiation, and loss of GBP5, but not GBP2, results in greater age-associated bone loss in mice. Moreover, mice deficient in GBP5 or chromosome 3 GBPs have greater LPS-mediated inflammatory bone loss compared to wild type mice. Overall, we find that GBP5 contributes to restricting age-associated and inflammation-induced bone loss by negatively regulating osteoclastogenesis.
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Affiliation(s)
- David E Place
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN, 38105, USA
| | - R K Subbarao Malireddi
- Department of Immunology, St. Jude Children's Research Hospital, Memphis, TN, 38105, USA
| | - Jieun Kim
- Center for In Vivo Imaging and Therapeutics, St. Jude Children's Research Hospital, Memphis, TN, 38105, USA
| | - Peter Vogel
- Veterinary Pathology Core, St. Jude Children's Research Hospital, Memphis, TN, 38105, USA
| | - Masahiro Yamamoto
- Department of Immunoparasitology, Osaka University, 3-1 Yamadaoka, Suita, Osaka, 565-0871, Japan
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Li S, Liu Q, Wu D, He T, Yuan J, Qiu H, Tickner J, Zheng SG, Li X, Xu J, Rong L. PKC-δ deficiency in B cells displays osteopenia accompanied with upregulation of RANKL expression and osteoclast-osteoblast uncoupling. Cell Death Dis 2020; 11:762. [PMID: 32938907 PMCID: PMC7494897 DOI: 10.1038/s41419-020-02947-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Revised: 06/25/2020] [Accepted: 06/29/2020] [Indexed: 12/27/2022]
Abstract
PKC-δ is an important molecule for B-cell proliferation and tolerance. B cells have long been recognized to play a part in osteoimmunology and pathological bone loss. However, the role of B cells with PKC-δ deficiency in bone homeostasis and the underlying mechanisms are unknown. We generated mice with PKC-δ deletion selectively in B cells by crossing PKC-δ-loxP mice with CD19-Cre mice. We studied their bone phenotype using micro-CT and histology. Next, immune organs were obtained and analyzed. Western blotting was used to determine the RANKL/OPG ratio in vitro in B-cell cultures, ELISA assay and immunohistochemistry were used to analyze in vivo RANKL/OPG balance in serum and bone sections respectively. Finally, we utilized osteoclastogenesis to study osteoclast function via hydroxyapatite resorption assay, and isolated primary calvaria osteoblasts to investigate osteoblast proliferation and differentiation. We also investigated osteoclast and osteoblast biology in co-culture with B-cell supernatants. We found that mice with PKC-δ deficiency in B cells displayed an osteopenia phenotype in the trabecular and cortical compartment of long bones. In addition, PKC-δ deletion resulted in changes of trabecular bone structure in association with activation of osteoclast bone resorption and decrease in osteoblast parameters. As expected, inactivation of PKC-δ in B cells resulted in changes in spleen B-cell number, function, and distribution. Consistently, the RANKL/OPG ratio was elevated remarkably in B-cell culture, in the serum and in bone specimens after loss of PKC-δ in B cells. Finally, in vitro analysis revealed that PKC-δ ablation suppressed osteoclast differentiation and function but co-culture with B-cell supernatant reversed the suppression effect, as well as impaired osteoblast proliferation and function, indicative of osteoclast–osteoblast uncoupling. In conclusion, PKC-δ plays an important role in the interplay between B cells in the immune system and bone cells in the pathogenesis of bone lytic diseases.
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Affiliation(s)
- Shangfu Li
- Department of Spine Surgery, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou Guangdong, China. .,Guangdong Provincial Center for Quality Control of Minimally Invasive Spine Surgery, Guangzhou, China. .,Guangdong Provincial Center for Engineering and Technology Research of Minimally Invasive Spine Surgery, Guangzhou, China.
| | - Qiuli Liu
- The Biotherapy Center, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou Guangdong, China
| | - Depeng Wu
- Department of Spine Surgery, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou Guangdong, China.,Guangdong Provincial Center for Quality Control of Minimally Invasive Spine Surgery, Guangzhou, China.,Guangdong Provincial Center for Engineering and Technology Research of Minimally Invasive Spine Surgery, Guangzhou, China
| | - Tianwei He
- Department of Spine Surgery, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou Guangdong, China.,Guangdong Provincial Center for Quality Control of Minimally Invasive Spine Surgery, Guangzhou, China.,Guangdong Provincial Center for Engineering and Technology Research of Minimally Invasive Spine Surgery, Guangzhou, China
| | - Jinbo Yuan
- School of Biomedical Sciences, The University of Western Australia, Perth, WA, Australia
| | - Heng Qiu
- School of Biomedical Sciences, The University of Western Australia, Perth, WA, Australia
| | - Jennifer Tickner
- School of Biomedical Sciences, The University of Western Australia, Perth, WA, Australia
| | - Song Guo Zheng
- Department of Internal Medicine, The Ohio State University Wexner Medical Center, Columbus, OH, USA
| | - Xiaojuan Li
- Laboratory of Anti-inflammatory and Immunomodulatory Pharmacology, Southern Medical University, Guangzhou Guangdong, China
| | - Jiake Xu
- School of Biomedical Sciences, The University of Western Australia, Perth, WA, Australia.
| | - Limin Rong
- Department of Spine Surgery, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou Guangdong, China. .,Guangdong Provincial Center for Quality Control of Minimally Invasive Spine Surgery, Guangzhou, China. .,Guangdong Provincial Center for Engineering and Technology Research of Minimally Invasive Spine Surgery, Guangzhou, China.
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Pang C, Wen L, Lu X, Luo S, Qin H, Zhang X, Zhu B, Luo S. Ruboxistaurin maintains the bone mass of subchondral bone for blunting osteoarthritis progression by inhibition of osteoclastogenesis and bone resorption activity. Biomed Pharmacother 2020; 131:110650. [PMID: 32882584 DOI: 10.1016/j.biopha.2020.110650] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2020] [Revised: 08/12/2020] [Accepted: 08/17/2020] [Indexed: 12/20/2022] Open
Abstract
Osteoarthritis (OA) is a common degenerative disease with a series of changes occurring in aging cartilage, such as increased oxidative stress, decreased markers of healthy cartilage and alterations in the autophagy pathway. And increasing evidence indicates that osteoarthritis affects the whole joint, including both cartilage and subchondral bone. The agents that can effectively suppress chondrocyte degradation and subchondral bone deterioration are crucial for the prevention and treatment of OA. Ruboxistaurin (RU), an orally active protein kinase C inhibitor, can reduce macrophage adhesion to endothelial cells and relieve the local inflammation when applicating in diabetes and kinds of aging-related vasculopathy, which were realized by its effects on decreasing inflammatory cytokines' expression and increasing cell anti-oxidative stress ability. However, whether ruboxistaurin protects against OA remains unknown. In this study, we investigated the therapeutic effects of ruboxistaurin in an anterior cruciate ligament transection (ACLT)-induced OA model by preventing the bone mass loss of subchondral bone. We found that ruboxistaurin can effectively alleviate ACLT-induced osteoarthritis, as demonstrated by the phenomenon of correcting pathological bone loss caused by osteoclasts overactivated in the early stage of osteoarthritis and protecting against articular cartilage degeneration. Moreover, we found that ruboxistaurin inhibited osteoclast formation and resorption activity by suppressing the expressions of osteoclast-related genes and (PKCδ/MAPKs) signaling cascade. Taken together, these results show that ruboxistaurin may be a potential therapeutic agent for rescuing abnormal subchondral bone deterioration and cartilage degradation in OA and reverses the vicious cycle related to osteoarthritis.
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Affiliation(s)
- Cong Pang
- Department of Orthopedics, The Ninth Affiliated Hospital of Guangxi Medical University, Beihai, Guangxi, China; Department of Orthopedics, Shaoxing People's Hospital (Shaoxing Hospital, Zhejiang University School of Medicine), Shaoxing, Zhejiang, China
| | - Liangbao Wen
- Department of Neurosurgery, The First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
| | - Xuanyuan Lu
- Department of Orthopedics, Shaoxing People's Hospital (Shaoxing Hospital, Zhejiang University School of Medicine), Shaoxing, Zhejiang, China
| | - Shanchao Luo
- Guangxi Postdoctoral Innovation Practice Base, The Ninth Affiliated Hospital of Guangxi Medical University, Beihai, Guangxi, China
| | - Haikuo Qin
- Department of Orthopedics, The Ninth Affiliated Hospital of Guangxi Medical University, Beihai, Guangxi, China
| | - Xuehui Zhang
- Department of Nuclear Medicine, The Ninth Affiliated Hospital of Guangxi Medical University, Beihai, Guangxi, China
| | - Bikang Zhu
- Department of Orthopedics, The Ninth Affiliated Hospital of Guangxi Medical University, Beihai, Guangxi, China
| | - Shixing Luo
- Department of Orthopedics, The Ninth Affiliated Hospital of Guangxi Medical University, Beihai, Guangxi, China.
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10
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Pang C, Wen L, Qin H, Zhu B, Lu X, Luo S. Sotrastaurin, a PKC inhibitor, attenuates RANKL-induced bone resorption and attenuates osteochondral pathologies associated with the development of OA. J Cell Mol Med 2020; 24:8452-8465. [PMID: 32652826 PMCID: PMC7412701 DOI: 10.1111/jcmm.15404] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2019] [Revised: 04/29/2020] [Accepted: 05/03/2020] [Indexed: 12/19/2022] Open
Abstract
Osteoarthritis (OA) is a common degenerative disease that affects the musculoskeletal structure of the whole joint, which is characterized by progressive destruction of both articular cartilage and subchondral bone. Treatment of the bone pathologies, particularly osteoclast‐mediated subchondral bone loss in the early stages of OA, could prevent subsequent cartilage degeneration and progression of OA. In the present study, the PKC inhibitor, Sotrastaurin, was found to inhibit RANKL‐induced osteoclast formation in vitro in a dose‐ and time‐dependent manner. In particular, SO exerted its anti‐osteoclastic effect predominantly at the early stages of RANKL stimulation, suggesting inhibitory effects on precursor cell fusion. Using mature osteoclasts cultured on bovine bone discs, we showed that SO also exerts anti‐resorptive effects on mature osteoclasts bone resorptive function. Mechanistically, SO attenuates the early activation of the p38, ERK and JNK signalling pathways, leeding to impaired induction of crucial osteoclast transcription factors c‐Jun, c‐Fos and NFATc1. We also showed that SO treatment significantly inhibited the phosphorylation of PKCδ and MARCKS, an upstream regulator of cathepsin K secretion. Finally, in animal studies, SO significantly alleviates the osteochondral pathologies of subchondral bone destruction as well as articular cartilage degeneration following DMM‐induced OA, markedly improving OARSI scores. The reduced subchondral bone loss was associated with marked reductions in TRAP(+) osteoclasts in the subchondral bone tissue. Collectively, our data provide evidence for the protective effects of SO against OA by preventing aberrant subchondral bone and articular cartilage changes. Thus, SO demonstrates potential for further development as an alternative therapeutic option against OA.
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Affiliation(s)
- Cong Pang
- Department of Orthopedics, The Ninth Affiliated Hospital of Guangxi Medical University, Beihai, China.,Department of Orthopedics, Shaoxing People's Hospital (Shaoxing Hospital, Zhejiang University School of Medicine), Shaoxing, China
| | - Liangbao Wen
- Department of Neurosurgery, The First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Haikuo Qin
- Department of Orthopedics, The Ninth Affiliated Hospital of Guangxi Medical University, Beihai, China
| | - Bikang Zhu
- Department of Orthopedics, The Ninth Affiliated Hospital of Guangxi Medical University, Beihai, China
| | - Xuanyuan Lu
- Department of Orthopedics, Shaoxing People's Hospital (Shaoxing Hospital, Zhejiang University School of Medicine), Shaoxing, China
| | - Shixing Luo
- Department of Orthopedics, The Ninth Affiliated Hospital of Guangxi Medical University, Beihai, China
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11
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Li S, He T, Wu D, Zhang L, Chen R, Liu B, Yuan J, Tickner J, Qin A, Xu J, Rong L. Conditional Knockout of PKC-δ in Osteoclasts Favors Bone Mass Accrual in Males Due to Decreased Osteoclast Function. Front Cell Dev Biol 2020; 8:450. [PMID: 32582715 PMCID: PMC7295979 DOI: 10.3389/fcell.2020.00450] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Accepted: 05/13/2020] [Indexed: 02/06/2023] Open
Abstract
Protein kinase C delta (PKC-δ) functions as an important regulator in bone metabolism. However, the precise involvement of PKC-δ in the regulation of osteoclasts remains elusive. We generated an osteoclast specific PKC-δ knockout mouse strain to investigate the function of PKC-δ in osteoclast biology. Bone phenotype was investigated using microcomputed tomography. Osteoclast and osteoblast parameters were assessed using bone histomorphometry, and analysis of osteoclast formation and function with osteoclastogensis and hydroxyapatite resorption assays. The molecular mechanisms by which PKC-δ regulated osteoclast function were dissected by Western Blotting, TUNEL assay, transfection and transcriptome sequencing. We found that ablation of PKC-δ in osteoclasts resulted in an increase in trabecular and cortical bone volume in male mice, however, the bone mass phenotype was not observed in female mice. This was accompanied by decreased osteoclast number and surface, and Cathepsin-K protein levels in vivo, as well as decreased osteoclast formation and resorption in vitro in a male-specific manner. PKC-δ regulated androgen receptor transcription by binding to its promoter, moreover, PKC-δ conditional knockout did not increase osteoclast apoptosis but increased MAPK signaling and enhanced androgen receptor transcription and expression, finally leding to significant alterations in gene expression and signaling changes related to extracellular matrix proteins specifically in male mice. In conclusion, PKC-δ plays an important role in osteoclast formation and function in a male-specific manner. Our work reveals a previously unknown target for treatment of gender-related bone diseases.
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Affiliation(s)
- Shangfu Li
- Department of Spine Surgery, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China.,Guangdong Provincial Center for Quality Control of Minimally Invasive Spine Surgery, Guangzhou, China.,Guangdong Provincial Center for Engineering and Technology Research of Minimally Invasive Spine Surgery, Guangzhou, China
| | - Tianwei He
- Department of Spine Surgery, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China.,Guangdong Provincial Center for Quality Control of Minimally Invasive Spine Surgery, Guangzhou, China.,Guangdong Provincial Center for Engineering and Technology Research of Minimally Invasive Spine Surgery, Guangzhou, China
| | - Depeng Wu
- Department of Spine Surgery, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China.,Guangdong Provincial Center for Quality Control of Minimally Invasive Spine Surgery, Guangzhou, China.,Guangdong Provincial Center for Engineering and Technology Research of Minimally Invasive Spine Surgery, Guangzhou, China
| | - Liangming Zhang
- Department of Spine Surgery, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China.,Guangdong Provincial Center for Quality Control of Minimally Invasive Spine Surgery, Guangzhou, China.,Guangdong Provincial Center for Engineering and Technology Research of Minimally Invasive Spine Surgery, Guangzhou, China
| | - Ruiqiang Chen
- Department of Spine Surgery, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China.,Guangdong Provincial Center for Quality Control of Minimally Invasive Spine Surgery, Guangzhou, China.,Guangdong Provincial Center for Engineering and Technology Research of Minimally Invasive Spine Surgery, Guangzhou, China
| | - Bin Liu
- Department of Spine Surgery, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China.,Guangdong Provincial Center for Quality Control of Minimally Invasive Spine Surgery, Guangzhou, China.,Guangdong Provincial Center for Engineering and Technology Research of Minimally Invasive Spine Surgery, Guangzhou, China
| | - Jinbo Yuan
- School of Biomedical Sciences, The University of Western Australia, Perth, WA, Australia
| | - Jennifer Tickner
- School of Biomedical Sciences, The University of Western Australia, Perth, WA, Australia
| | - An Qin
- Shanghai Key Laboratory of Orthopedic Implants, Department of Orthopedic Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jiake Xu
- School of Biomedical Sciences, The University of Western Australia, Perth, WA, Australia
| | - Limin Rong
- Department of Spine Surgery, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, China.,Guangdong Provincial Center for Quality Control of Minimally Invasive Spine Surgery, Guangzhou, China.,Guangdong Provincial Center for Engineering and Technology Research of Minimally Invasive Spine Surgery, Guangzhou, China
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12
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Zhang X, Pan L, Yu J, Huang H. One recombinant C-type lectin (LvLec) from white shrimp Litopenaeus vannamei affected the haemocyte immune response in vitro. FISH & SHELLFISH IMMUNOLOGY 2019; 89:35-42. [PMID: 30890430 DOI: 10.1016/j.fsi.2019.03.029] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2018] [Revised: 03/12/2019] [Accepted: 03/12/2019] [Indexed: 06/09/2023]
Abstract
C-type lectin has received widespread attention in animal immunomodulation functions since it was discovered, but it is still limited in crustaceans. The present study is to explore effects of one recombinant C-type lectin (LvLec protein) on haemocyte immune response in Litopenaeus vannamei (L. vannamei). The methods of keeping haemocyte immune activity were optimised by the Key Laboratory of Mariculture. The experiment was divided into four groups: control group, recombinant protein group (LvLec protein, 1.0 mg mL-1), Lipopolysaccharide group (LPS, 1.0 mg mL-1), and LPS combine with LvLec protein group (LPS + LvLec protein, 1.0 mg mL-1 + 1.0 mg mL-1), while each group processes 0, 3, 6, 9, 12, and 24 h respectively. The results showed that the haemocyte count reduced, while the exocytosis PO activity, hemagglutinating activity and phagocytic activity promoted, and the concentration of cGMP and PKA increased after LvLec protein treatment. However, the levels of antibacterial activity and bacteriolytic activity as well as the concentrations of cAMP and PKG did not change significantly after treating with LvLec protein, LPS or LPS + LvLec protein. Therefore, these results suggest that LvLec protein can stimulate the exocytosis PO activity through cGMP-PKA pathway to affect the phagocytic activity and hemagglutinating activity of L. vannamei haemocytes in vitro.
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Affiliation(s)
- Xin Zhang
- The Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao, 266003, PR China
| | - Luqing Pan
- The Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao, 266003, PR China.
| | - Jinhong Yu
- The Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao, 266003, PR China
| | - Hui Huang
- The Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao, 266003, PR China
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13
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Feng W, Li J, Liao S, Ma S, Li F, Zhong C, Li G, Wei Y, Huang H, Wei Q, Yao J, Liu Y. Gö6983 attenuates titanium particle-induced osteolysis and RANKL mediated osteoclastogenesis through the suppression of NFκB/JNK/p38 pathways. Biochem Biophys Res Commun 2018; 503:62-70. [PMID: 29856998 DOI: 10.1016/j.bbrc.2018.05.177] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2018] [Accepted: 05/26/2018] [Indexed: 10/14/2022]
Abstract
Osteoclast activation by wear particles has caused major difficulties for surgeons. Wear particles are the main causes of aseptic prosthetic loosening. Gö6983, a protein kinase C inhibitor, inhibits five subtypes of protein kinase C family members. Here, we found that Gö6983 had an obviously inhibitory effect on wear-particles-induced osteolysis in vivo. In vitro, Gö6983 inhibited RANKL-stimulated osteoclast formation and function by inhibiting the RANKL-stimulated nuclear factor-κB/JNK/p38 signaling pathway. We also observed that Go6983 had no effect on the differentiation of osteoblasts and osteoblast-associated genes expression. According to our data, Gö6983 has potential therapeutic effects for aseptic prosthetic loosening caused by osteoclast activation.
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Affiliation(s)
- Wenyu Feng
- Departments of Orthopedics, The First Affliated Hospital of Guangxi Medical University, Nanning, Guangxi, China; Research Centre for Regenerative Medicine, Guangxi Key Laboratory of Regenerative Medicine, Guangxi Medical University, Nanning, Guangxi, China
| | - Jia Li
- Departments of Pathology, The First Affliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
| | - Shijie Liao
- Departments of Orthopedics, The First Affliated Hospital of Guangxi Medical University, Nanning, Guangxi, China; Research Centre for Regenerative Medicine, Guangxi Key Laboratory of Regenerative Medicine, Guangxi Medical University, Nanning, Guangxi, China
| | - Shiting Ma
- Departments of Orthopedics, The First Affliated Hospital of Guangxi Medical University, Nanning, Guangxi, China; Research Centre for Regenerative Medicine, Guangxi Key Laboratory of Regenerative Medicine, Guangxi Medical University, Nanning, Guangxi, China
| | - Feicui Li
- Departments of General Medicine, The First Affliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
| | - Chaoyi Zhong
- Research Centre for Regenerative Medicine, Guangxi Key Laboratory of Regenerative Medicine, Guangxi Medical University, Nanning, Guangxi, China
| | - Guodong Li
- Research Centre for Regenerative Medicine, Guangxi Key Laboratory of Regenerative Medicine, Guangxi Medical University, Nanning, Guangxi, China
| | - Yan Wei
- Departments of Pathology, The First Affliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
| | - Huading Huang
- Departments of Cardiothoracic Surgery, The First Affliated Hospital of Guangxi Medical University, Nanning, Guangxi, China
| | - Qingjun Wei
- Departments of Orthopedics, The First Affliated Hospital of Guangxi Medical University, Nanning, Guangxi, China; Research Centre for Regenerative Medicine, Guangxi Key Laboratory of Regenerative Medicine, Guangxi Medical University, Nanning, Guangxi, China.
| | - Jun Yao
- Departments of Orthopedics, The First Affliated Hospital of Guangxi Medical University, Nanning, Guangxi, China; Research Centre for Regenerative Medicine, Guangxi Key Laboratory of Regenerative Medicine, Guangxi Medical University, Nanning, Guangxi, China.
| | - Yun Liu
- Departments of Orthopedics, The First Affliated Hospital of Guangxi Medical University, Nanning, Guangxi, China; Research Centre for Regenerative Medicine, Guangxi Key Laboratory of Regenerative Medicine, Guangxi Medical University, Nanning, Guangxi, China.
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14
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Cheng J, Zhou L, Liu Q, Tickner J, Tan Z, Li X, Liu M, Lin X, Wang T, Pavlos NJ, Zhao J, Xu J. Cyanidin Chloride inhibits ovariectomy-induced osteoporosis by suppressing RANKL-mediated osteoclastogenesis and associated signaling pathways. J Cell Physiol 2018; 233:2502-2512. [PMID: 28771720 DOI: 10.1002/jcp.26126] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2016] [Accepted: 08/01/2017] [Indexed: 12/24/2022]
Abstract
Over-production and activation of osteoclasts is a common feature of osteolytic conditions such as osteoporosis, tumor-associated osteolysis, and inflammatory bone erosion. Cyanidin Chloride, a subclass of anthocyanin, displays antioxidant and anti-carcinogenesis properties, but its role in osteoclastic bone resorption and osteoporosis is not well understood. In this study, we showed that Cyanidin Chloride inhibits osteoclast formation, hydroxyapatite resorption, and receptor activator of NF-κB ligand (RANKL)-induced osteoclast marker gene expression; including ctr, ctsk, and trap. Further investigation revealed that Cyanidin Chloride inhibits RANKL-induced NF-κB activation, suppresses the degradation of IκB-α and attenuates the phosphorylation of extracellular signal-regulated kinases (ERK). In addition, Cyanidin Chloride abrogated RANKL-induced calcium oscillations, the activation of nuclear factor of activated T cells calcineurin-dependent 1 (NFATc1), and the expression of c-Fos. Further, we showed that Cyanidin Chloride protects against ovariectomy-induced bone loss in vivo. Together our findings suggest that Cyanidin Chloride is capable of inhibiting osteoclast formation, hydroxyapatite resorption and RANKL-induced signal pathways in vitro and OVX-induced bone loss in vivo, and thus might have therapeutic potential for osteolytic diseases.
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Affiliation(s)
- Jianwen Cheng
- Research Center for Regenerative Medicine, and Guangxi Key Laboratory of Regenerative Medicine, Guangxi Medical University, Guangxi, China
- Department of Orthopaedic Surgery, the First Affiliated Hospital of Guangxi Medical University, Guangxi, China
- School of Pathology and Laboratory Medicine, The University of Western Australia, Perth, Western Australia, Australia
| | - Lin Zhou
- School of Pathology and Laboratory Medicine, The University of Western Australia, Perth, Western Australia, Australia
| | - Qian Liu
- Research Center for Regenerative Medicine, and Guangxi Key Laboratory of Regenerative Medicine, Guangxi Medical University, Guangxi, China
| | - Jennifer Tickner
- School of Pathology and Laboratory Medicine, The University of Western Australia, Perth, Western Australia, Australia
| | - Zhen Tan
- Research Center for Regenerative Medicine, and Guangxi Key Laboratory of Regenerative Medicine, Guangxi Medical University, Guangxi, China
- Department of Orthopaedic Surgery, the First Affiliated Hospital of Guangxi Medical University, Guangxi, China
| | - Xiaofeng Li
- Research Center for Regenerative Medicine, and Guangxi Key Laboratory of Regenerative Medicine, Guangxi Medical University, Guangxi, China
- Department of Orthopaedic Surgery, the First Affiliated Hospital of Guangxi Medical University, Guangxi, China
| | - Mei Liu
- Jiangsu Key Laboratory for Molecular and Medical Biotechnology and College of Life Sciences, Nanjing Normal University, Nanjing, China
| | - Xixi Lin
- Research Center for Regenerative Medicine, and Guangxi Key Laboratory of Regenerative Medicine, Guangxi Medical University, Guangxi, China
| | - Tao Wang
- Research Center for Regenerative Medicine, and Guangxi Key Laboratory of Regenerative Medicine, Guangxi Medical University, Guangxi, China
| | - Nathan J Pavlos
- School of Surgery, The University of Western Australia, Perth, Western Australia, Australia
| | - Jinmin Zhao
- Research Center for Regenerative Medicine, and Guangxi Key Laboratory of Regenerative Medicine, Guangxi Medical University, Guangxi, China
- Department of Orthopaedic Surgery, the First Affiliated Hospital of Guangxi Medical University, Guangxi, China
- Guangxi Collaborative Innovation Center for Biomedicine, Guangxi Medical University, Guangxi, China
| | - Jiake Xu
- Research Center for Regenerative Medicine, and Guangxi Key Laboratory of Regenerative Medicine, Guangxi Medical University, Guangxi, China
- School of Pathology and Laboratory Medicine, The University of Western Australia, Perth, Western Australia, Australia
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15
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Iwazaki K, Tanaka T, Hozumi Y, Okada M, Tsuchiya R, Iseki K, Topham MK, Kawamae K, Takagi M, Goto K. DGKζ Downregulation Enhances Osteoclast Differentiation and Bone Resorption Activity Under Inflammatory Conditions. J Cell Physiol 2016; 232:617-624. [DOI: 10.1002/jcp.25461] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2016] [Accepted: 06/15/2016] [Indexed: 11/10/2022]
Affiliation(s)
- Kiyoshi Iwazaki
- Department of Anatomy and Cell Biology; Yamagata University School of Medicine; Yamagata Japan
- Department of Orthopaedic; Yamagata University School of Medicine; Yamagata Japan
| | - Toshiaki Tanaka
- Department of Anatomy and Cell Biology; Yamagata University School of Medicine; Yamagata Japan
| | - Yasukazu Hozumi
- Department of Anatomy and Cell Biology; Yamagata University School of Medicine; Yamagata Japan
| | - Masashi Okada
- Department of Anatomy and Cell Biology; Yamagata University School of Medicine; Yamagata Japan
| | - Rieko Tsuchiya
- Department of Anatomy and Cell Biology; Yamagata University School of Medicine; Yamagata Japan
| | - Ken Iseki
- Department of Emergency and Critical Care Medicine; Yamagata University School of Medicine; Yamagata Japan
| | - Matthew K. Topham
- Department of Oncological Sciences, Huntsman Cancer Institute; University of Utah; Salt Lake City Utah
| | - Kaneyuki Kawamae
- Department of Anesthesiology; Yamagata University School of Medicine; Yamagata Japan
| | - Michiaki Takagi
- Department of Orthopaedic; Yamagata University School of Medicine; Yamagata Japan
| | - Kaoru Goto
- Department of Anatomy and Cell Biology; Yamagata University School of Medicine; Yamagata Japan
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16
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Morc3 mutant mice exhibit reduced cortical area and thickness, accompanied by altered haematopoietic stem cells niche and bone cell differentiation. Sci Rep 2016; 6:25964. [PMID: 27188231 PMCID: PMC4870562 DOI: 10.1038/srep25964] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2016] [Accepted: 04/18/2016] [Indexed: 01/31/2023] Open
Abstract
Morc3, a member of a highly conserved nuclear matrix protein super-family plays an important part in chromatin remodeling, DNA repair, epigenetic regulation and cellular senescence. However, its role in bone homeostasis is not known. In the present study, a phenotype-driven ENU mouse mutagenesis screen revealed that Morc3mut +/− mice exhibit reduced cortical area and thickness with increased cortical porosity. Morc3mut +/− mice displayed reduced osteoclast numbers and surface per bone surface as well as osteocyte numbers, concomitant with altered gene expressions such as Rankl/Opg and Sost in ex vivo long bones. In vitro experiments revealed a significant increase in the number of Sca-1+/c-kit+ haematopoietic stem cells (HSCs), and a significant reduction in senescence associated β-galactosidase activity in bone marrow macrophages (BMMs). In addition, we observed a decrease in osteoclastogenesis and bone resorption accompanied by upregulation of STAT1 expression in osteoclast lineage cells. Strikingly, Morc3 protein localization within the nuclear membrane was shifted to the cytoplasm in Morc3mut +/− osteoclasts. Further, Morc3mut +/− mice displayed increased osteoblast differentiation and altered gene expression. Collectively, our data show that Morc3 is a previously unreported regulator of cortical bone homeostasis and haematopoietic stem cells niche, accompanied by altered bone cell differentiation.
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17
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Yang X, Teguh D, Wu JP, He B, Kirk TB, Qin S, Li S, Chen H, Xue W, Ng B, Chim SM, Tickner J, Xu J. Protein kinase C delta null mice exhibit structural alterations in articular surface, intra-articular and subchondral compartments. Arthritis Res Ther 2015; 17:210. [PMID: 26279273 PMCID: PMC4538913 DOI: 10.1186/s13075-015-0720-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2015] [Accepted: 07/17/2015] [Indexed: 12/15/2022] Open
Abstract
Introduction Structural alterations in intra-articular and subchondral compartments are hallmarks of osteoarthritis, a degenerative disease that causes pain and disability in the aging population. Protein kinase C delta (PKC-δ) plays versatile functions in cell growth and differentiation, but its role in the articular cartilage and subchondral bone is not known. Methods Histological analysis including alcian blue, safranin O staining and fluorochrome labeling were used to reveal structural alterations at the articular cartilage surface and bone–cartilage interface in PKC-δ knockout (KO) mice. The morphology and organization of chondrocytes were studied using confocal microscopy. Glycosaminoglycan content was studied by micromass culture of chondrocytes of PKC-δ KO mice. Results We uncovered atypical structural demarcation between articular cartilage and subchondral bone of PKC-δ KO mice. Histology analyses revealed a thickening of the articular cartilage and calcified bone–cartilage interface, and decreased safranin O staining accompanied by an increase in the number of hypertrophic chondrocytes in the articular cartilage of PKC-δ KO mice. Interestingly, loss of demarcation between articular cartilage and bone was concomitant with irregular chondrocyte morphology and arrangement. Consistently, in vivo calcein labeling assay showed an increased intensity of calcein labeling in the interface of the growth plate and metaphysis in PKC-δ KO mice. Furthermore, in vitro culture of chondrocyte micromass showed a decreased alcian blue staining of chondrocyte micromass in the PKC-δ KO mice, indicative of a reduced level of glycosaminoglycan production. Conclusions Our data imply a role for PKC-δ in the osteochondral plasticity of the interface between articular cartilage and the osteochondral junction. Electronic supplementary material The online version of this article (doi:10.1186/s13075-015-0720-4) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Xiaohong Yang
- Guangzhou Institute of Traumatic Surgery, the Fourth Affiliated Hospital of Medical College, Jinan University, Guangzhou, 510220, China.
| | - Dian Teguh
- School of Pathology and Laboratory Medicine, University of Western Australia, Perth, WA, 6009, Australia.
| | - Jian-Ping Wu
- Department of Mechanical Engineering, Curtin University, Perth, WA, 6102, Australia.
| | - Bo He
- School of Pathology and Laboratory Medicine, University of Western Australia, Perth, WA, 6009, Australia. .,Present address: Harry Perkins Institute of Medical Research, The University of Western Australia, Nedlands, Perth, WA, 6009, Australia.
| | - Thomas Brett Kirk
- Department of Mechanical Engineering, Curtin University, Perth, WA, 6102, Australia.
| | - Shengnan Qin
- Guangzhou Institute of Traumatic Surgery, the Fourth Affiliated Hospital of Medical College, Jinan University, Guangzhou, 510220, China.
| | - Siming Li
- Guangzhou Institute of Traumatic Surgery, the Fourth Affiliated Hospital of Medical College, Jinan University, Guangzhou, 510220, China.
| | - Honghui Chen
- Guangzhou Institute of Traumatic Surgery, the Fourth Affiliated Hospital of Medical College, Jinan University, Guangzhou, 510220, China.
| | - Wei Xue
- Department of Biomedical Engineering, Key Laboratory of Biomaterials of Guangdong Higher Education Institutes, Jinan University, Guangzhou, 510632, China.
| | - Benjamin Ng
- School of Pathology and Laboratory Medicine, University of Western Australia, Perth, WA, 6009, Australia.
| | - Shek Man Chim
- School of Pathology and Laboratory Medicine, University of Western Australia, Perth, WA, 6009, Australia.
| | - Jennifer Tickner
- School of Pathology and Laboratory Medicine, University of Western Australia, Perth, WA, 6009, Australia.
| | - Jiake Xu
- Guangzhou Institute of Traumatic Surgery, the Fourth Affiliated Hospital of Medical College, Jinan University, Guangzhou, 510220, China. .,School of Pathology and Laboratory Medicine, University of Western Australia, Perth, WA, 6009, Australia.
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18
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Yao J, Li J, Zhou L, Cheng J, Chim SM, Zhang G, Quinn JMW, Tickner J, Zhao J, Xu J. Protein kinase C inhibitor, GF109203X attenuates osteoclastogenesis, bone resorption and RANKL-induced NF-κB and NFAT activity. J Cell Physiol 2015; 230:1235-42. [PMID: 25363829 DOI: 10.1002/jcp.24858] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2014] [Accepted: 10/28/2014] [Indexed: 12/14/2022]
Abstract
Osteolytic bone diseases are characterized by excessive osteoclast formation and activation. Protein kinase C (PKC)-dependent pathways regulate cell growth, differentiation and apoptosis in many cellular systems, and have been implicated in cancer development and osteoclast formation. A number of PKC inhibitors with anti-cancer properties have been developed, but whether they might also influence osteolysis (a common complication of bone invading cancers) is unclear. We studied the effects of the PKC inhibitor compound, GF109203X on osteoclast formation and activity, processes driven by receptor activator of NFκB ligand (RANKL). We found that GF109203X strongly and dose dependently suppresses osteoclastogenesis and osteoclast activity in RANKL-treated primary mouse bone marrow cells. Consistent with this GF109203X reduced expression of key osteoclastic genes, including cathepsin K, calcitonin receptor, tartrate resistant acid phosphatase (TRAP) and the proton pump subunit V-ATPase-d2 in RANKL-treated primary mouse bone marrow cells. Expression of these proteins is dependent upon RANKL-induced NF-κB and NFAT transcription factor actions; both were reduced in osteoclast progenitor populations by GF109203X treatment, notably NFATc1 levels. Furthermore, we showed that GF109203X inhibits RANKL-induced calcium oscillation. Together, this study shows GF109203X may block osteoclast functions, suggesting that pharmacological blockade of PKC-dependent pathways has therapeutic potential in osteolytic diseases.
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Affiliation(s)
- Jun Yao
- Department of Orthopaedic Surgery, Research Centre for Regenerative Medicine, The First Affiliated Hospital of Guangxi Medical University, Guangxi, China; School of Pathology and Laboratory Medicine, The University of Western Australia, Perth, Western Australia, Australia
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Kular J, Tickner JC, Pavlos NJ, Viola HM, Abel T, Lim BS, Yang X, Chen H, Cook R, Hool LC, Zheng MH, Xu J. Choline kinase β mutant mice exhibit reduced phosphocholine, elevated osteoclast activity, and low bone mass. J Biol Chem 2014; 290:1729-42. [PMID: 25451916 DOI: 10.1074/jbc.m114.567966] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
The maintenance of bone homeostasis requires tight coupling between bone-forming osteoblasts and bone-resorbing osteoclasts. However, the precise molecular mechanism(s) underlying the differentiation and activities of these specialized cells are still largely unknown. Here, we identify choline kinase β (CHKB), a kinase involved in the biosynthesis of phosphatidylcholine, as a novel regulator of bone homeostasis. Choline kinase β mutant mice (flp/flp) exhibit a systemic low bone mass phenotype. Consistently, osteoclast numbers and activity are elevated in flp/flp mice. Interestingly, osteoclasts derived from flp/flp mice exhibit reduced sensitivity to excessive levels of extracellular calcium, which could account for the increased bone resorption. Conversely, supplementation of cytidine 5'-diphosphocholine in vivo and in vitro, a regimen that bypasses CHKB deficiency, restores osteoclast numbers to physiological levels. Finally, we demonstrate that, in addition to modulating osteoclast formation and function, loss of CHKB corresponds with a reduction in bone formation by osteoblasts. Taken together, these data posit CHKB as a new modulator of bone homeostasis.
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Affiliation(s)
- Jasreen Kular
- From the School of Pathology and Laboratory Medicine
| | | | | | | | - Tamara Abel
- Centre for Microscopy, Characterization and Analysis, University of Western Australia, Nedlands 6009, Western Australia, Australia and
| | - Bay Sie Lim
- From the School of Pathology and Laboratory Medicine
| | - Xiaohong Yang
- the Guangzhou Institute of Traumatic Surgery, the Fourth Affiliated Hospital of Medical College, Jinan University, Guangzhou 510182, China
| | - Honghui Chen
- the Guangzhou Institute of Traumatic Surgery, the Fourth Affiliated Hospital of Medical College, Jinan University, Guangzhou 510182, China
| | - Robert Cook
- From the School of Pathology and Laboratory Medicine
| | - Livia C Hool
- School of Anatomy, Physiology and Human Biology, and
| | | | - Jiake Xu
- From the School of Pathology and Laboratory Medicine,
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Lee S, Cho HY, Bui HTT, Kang D. The osteogenic or adipogenic lineage commitment of human mesenchymal stem cells is determined by protein kinase C delta. BMC Cell Biol 2014; 15:42. [PMID: 25420887 PMCID: PMC4258059 DOI: 10.1186/s12860-014-0042-4] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2014] [Accepted: 11/05/2014] [Indexed: 01/08/2023] Open
Abstract
BACKGROUND Mesenchymal stem cells (MSCs) have the potential to differentiate into specialized cell lineages such as osteoblasts and adipocytes in vitro. There exists a reciprocal relationship between osteogenic and adipogenic differentiation of MSCs that an osteogenic phenotype occurs at the expense of an adipogenic phenotype and vice versa, which in turn influence one another's phenotype through negative feedback loops. Thus, it is important to understand what signaling molecules modulate the lineage commitment of MSCs. Protein kinase C (PKC) plays a central role in cellular signal transduction for mediating diverse biological functions, and dysregulation of PKC activity is involved in various metabolic diseases including cancer, diabetes, and heart disease. Although the role of individual PKC isoforms has been investigated in various fields, the potential role of PKC in bone metabolism is not completely understood. In this study, we investigated the potential role of PKCδ in osteogenic lineage commitment of human bone marrow-derived mesenchymal stem cells (hBMSCs). RESULTS We observed that expression and phosphorylation of PKCδ were increased during osteogenic differentiation of hBMSCs. Pharmacological inhibition and genetic ablation of PKCδ in hBMSCs resulted in a significant attenuation of osteogenic differentiation as evidenced by reduced ALP activity and ECM mineralization, as well as down-regulation of the expression of osteoblast-specific genes. These effects were also accompanied by induction of adipogenic differentiation and up-regulation of the expression of adipocyte-specific genes involved in lipid synthesis in osteogenic induction of hBMSCs. Additionally, the activation of AMPK, which is a key cellular energy sensor, induced osteogenesis of hBMSCs. However, the inhibition of AMPK activity by compound C did not affect the activation of PKCδ at all, indicating that there is no direct correlation between AMPK and PKCδ in osteogenesis of hBMSCs. CONCLUSIONS These results suggest that PKCδ is a critical regulator for the balance between osteogenesis and adipogenesis of hBMSCs and thus has a potential novel therapeutic target for the treatment of metabolic bone diseases.
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Zhai ZJ, Li HW, Liu GW, Qu XH, Tian B, Yan W, Lin Z, Tang TT, Qin A, Dai KR. Andrographolide suppresses RANKL-induced osteoclastogenesis in vitro and prevents inflammatory bone loss in vivo. Br J Pharmacol 2014; 171:663-75. [PMID: 24125472 DOI: 10.1111/bph.12463] [Citation(s) in RCA: 92] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2013] [Revised: 09/25/2013] [Accepted: 09/27/2013] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND AND PURPOSE Osteoclasts play a pivotal role in diseases such as osteoporosis, rheumatoid arthritis and tumour bone metastasis. Thus, searching for natural compounds that may suppress osteoclast formation and/or function is promising for the treatment of osteoclast-related diseases. Here, we examined changes in osteoclastogenesis and LPS-induced osteolysis in response to andrographolide (AP), a diterpenoid lactone isolated from the traditional Chinese and Indian medicinal plant Andrographis paniculata. EXPERIMENTAL APPROACH Effects of AP on osteoclast differentiation and bone resorption were measured in vitro. Western blots and RT-PCR techniques were used to examine the underlying molecular mechanisms. The bone protective activity of AP in vivo was assessed in a mouse model of osteolysis. KEY RESULTS AP concentration-dependently suppressed RANKL-mediated osteoclast differentiation and bone resorption in vitro and reduced the expression of osteoclast-specific markers, including tartrate-resistant acid phosphatase, calcitonin receptors and cathepsin K. Further molecular analysis revealed that AP impaired RANKL-induced NF-κB signalling by inhibiting the phosphorylation of TGF-β-activated kinase 1, suppressing the phosphorylation and degradation of IκBα, and subsequently preventing the nuclear translocation of the NF-κB p65 subunit. AP also inhibited the ERK/MAPK signalling pathway without affecting p38 or JNK signalling. CONCLUSIONS AND IMPLICATIONS AP suppressed RANKL-induced osteoclastogenesis through attenuating NF-κB and ERK/MAPK signalling pathways in vitro, thus preventing bone loss in vivo. These data indicated that AP is a promising natural compound for the treatment of osteoclast-related bone diseases.
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Affiliation(s)
- Z J Zhai
- Shanghai Key Laboratory of Orthopaedic Implants, Department of Orthopaedics, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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Role of vesicular trafficking in skeletal dynamics. Curr Opin Pharmacol 2014; 16:7-14. [PMID: 24566133 DOI: 10.1016/j.coph.2014.01.003] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2014] [Accepted: 01/27/2014] [Indexed: 01/06/2023]
Abstract
Vesicular trafficking is critical for the function of bone cells, exemplified by bone diseases such as osteopetrosis, which frequently results from defects in this process. Recent work has further dissected the role of the endolysosomal system in both bone formation by osteoblasts and bone resorption by osteoclasts. This pathway also plays an important role in the communication between these and other cells in bone, through trafficking and degradation of growth factors and their receptors, and microvesicle release. In addition, a crucial role for autophagy in bone remodelling and bone disease is beginning to emerge. These insights into the molecular control of bone remodelling raise the possibility of developing novel therapeutics for bone diseases designed to target specific aspects of this process.
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