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Kim JH, Kim K, Kim I, Seong S, Koh JT, Kim N. Nodal negatively regulates osteoclast differentiation by inducing STAT1 phosphorylation. J Cell Physiol 2024; 239:e31268. [PMID: 38577903 DOI: 10.1002/jcp.31268] [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: 01/10/2024] [Revised: 03/05/2024] [Accepted: 03/20/2024] [Indexed: 04/06/2024]
Abstract
Several members of the transforming growth factor beta (TGF-β) superfamily regulate the proliferation, differentiation, and function of bone-forming osteoblasts and bone-resorbing osteoclasts. However, it is still unknown whether Nodal, a member of the TGF-β superfamily, serves a function in bone cells. In this study, we found that Nodal did not have any function in osteoblasts but instead negatively regulated osteoclast differentiation. Nodal inhibited RANKL-induced osteoclast differentiation by downregulating the expression of pro-osteoclastogenic genes, including c-fos, Nfatc1, and Blimp1, and upregulating the expression of antiosteoclastogenic genes, including Bcl6 and Irf8. Nodal activated STAT1 in osteoclast precursor cells, and STAT1 downregulation significantly reduced the inhibitory effect of Nodal on osteoclast differentiation. These findings indicate that Nodal activates STAT1 to downregulate or upregulate the expression of pro-osteoclastogenic or antiosteoclastogenic genes, respectively, leading to the inhibition of osteoclast differentiation. Moreover, the inhibitory effect of Nodal on osteoclast differentiation contributed to the reduction of RANKL-induced bone loss in vivo.
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Affiliation(s)
- Jung Ha Kim
- Department of Pharmacology, Chonnam National University Medical School, Gwangju, South Korea
- Hard-Tissue Biointerface Research Center, School of Dentistry, Chonnam National University, Gwangju, South Korea
| | - Kabsun Kim
- Department of Pharmacology, Chonnam National University Medical School, Gwangju, South Korea
| | - Inyoung Kim
- Department of Pharmacology, Chonnam National University Medical School, Gwangju, South Korea
| | - Semun Seong
- Department of Pharmacology, Chonnam National University Medical School, Gwangju, South Korea
- Hard-Tissue Biointerface Research Center, School of Dentistry, Chonnam National University, Gwangju, South Korea
| | - Jeong-Tae Koh
- Hard-Tissue Biointerface Research Center, School of Dentistry, Chonnam National University, Gwangju, South Korea
- Department of Pharmacology and Dental Therapeutics, School of Dentistry, Chonnam National University, Gwangju, South Korea
| | - Nacksung Kim
- Department of Pharmacology, Chonnam National University Medical School, Gwangju, South Korea
- Hard-Tissue Biointerface Research Center, School of Dentistry, Chonnam National University, Gwangju, South Korea
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2
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Kim C. Extracellular Signal-Regulated Kinases Play Essential but Contrasting Roles in Osteoclast Differentiation. Int J Mol Sci 2023; 24:15342. [PMID: 37895023 PMCID: PMC10607827 DOI: 10.3390/ijms242015342] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Revised: 10/16/2023] [Accepted: 10/17/2023] [Indexed: 10/29/2023] Open
Abstract
Bone homeostasis is regulated by the balanced actions of osteoblasts that form the bone and osteoclasts (OCs) that resorb the bone. Bone-resorbing OCs are differentiated from hematopoietic monocyte/macrophage lineage cells, whereas osteoblasts are derived from mesenchymal progenitors. OC differentiation is induced by two key cytokines, macrophage colony-stimulating factor (M-CSF), a factor essential for the proliferation and survival of the OCs, and receptor activator of nuclear factor kappa-B ligand (RANKL), a factor for responsible for the differentiation of the OCs. Mitogen-activated protein kinases (MAPKs), including extracellular signal-regulated kinases (ERKs), p38, and c-Jun N-terminal kinases, play an essential role in regulating the proliferation, differentiation, and function of OCs. ERKs have been known to play a critical role in the differentiation and activation of OCs. In most cases, ERKs positively regulate OC differentiation and function. However, several reports present conflicting conclusions. Interestingly, the inhibition of OC differentiation by ERK1/2 is observed only in OCs differentiated from RAW 264.7 cells. Therefore, in this review, we summarize the current understanding of the conflicting actions of ERK1/2 in OC differentiation.
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Affiliation(s)
- Chaekyun Kim
- BK21 Program in Biomedical Science & Engineering, Laboratory for Leukocyte Signaling Research, Department of Pharmacology, College of Medicine, Inha University, Incheon 22212, Republic of Korea
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3
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Hoang Dong N, Audrey L, Leopold MN, Javier M, Hugues A, Luigi B, Gilles B, Scott MS, Sophie R. Osteoclast microRNA Profiling in Rheumatoid Arthritis to Capture the Erosive Factor. JBMR Plus 2023; 7:e10776. [PMID: 37614303 PMCID: PMC10443079 DOI: 10.1002/jbm4.10776] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/19/2023] [Revised: 05/04/2023] [Accepted: 05/16/2023] [Indexed: 08/25/2023] Open
Abstract
In rheumatoid arthritis (RA), only a subset of patients develop irreversible bone destruction. Our aim was to identify a microRNA (miR)-based osteoclast-related signature predictive of erosiveness in RA. Seventy-six adults with erosive (E) or nonerosive (NE) seropositive RA and 43 sex- and age-matched healthy controls were recruited. Twenty-five miRs from peripheral blood mononuclear cell (PBMC)-derived osteoclasts selected from RNA-Seq (discovery cohort) were assessed by qPCR (replication cohort), as were 33 target genes (direct targets or associated with regulated pathways). The top five miRs found differentially expressed in RA osteoclasts were either decreased (hsa-miR-34a-3p, 365b-3p, 374a-3p, and 511-3p [E versus NE]) or increased (hsa-miR-193b-3p [E versus controls]). In vitro, inhibition of miR-34a-3p had an impact on osteoclast bone resorption. An integrative network analysis of miRs and their targets highlighted correlations between mRNA and miR expression, both negative (CD38, CD80, SIRT1) and positive (MITF), and differential gene expression between NE versus E (GXYLT1, MITF) or versus controls (CD38, KLF4). Machine-learning models were used to evaluate the value of miRs and target genes, in combination with clinical data, to predict erosion. One model, including a set of miRs (predominantly 365b-3p) combined with rheumatoid factor titer, provided 70% accuracy (area under the curve [AUC] 0.66). Adding genes directly targeted or belonging to related pathways improved the predictive power of the model for the erosive phenotype (78% accuracy, AUC 0.85). This proof-of-concept study indicates that identification of RA subjects at risk of erosions may be improved by studying miR expression in PBMC-derived osteoclasts, suggesting novel approaches toward personalized treatment. © 2023 The Authors. JBMR Plus published by Wiley Periodicals LLC on behalf of American Society for Bone and Mineral Research.
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Affiliation(s)
- Nguyen Hoang Dong
- Department of Biochemistry and Functional GenomicsUniversity of Sherbrooke and Research Centre of the Centre Intégré Universitaire de Santé et Services Sociaux de l'Estrie – Centre Hospitalier Universitaire de Sherbrooke (CIUSSSE‐CHUS)SherbrookeCanada
| | - Lortie Audrey
- Division of Rheumatology, Department of Medicine, Faculty of Medicine and Health SciencesUniversity of Sherbrooke and Research Centre of the Centre Intégré Universitaire de Santé et Services Sociaux de l'Estrie – Centre Hospitalier Universitaire de Sherbrooke (CIUSSSE‐CHUS)SherbrookeCanada
| | - Mbous Nguimbus Leopold
- Division of Rheumatology, Department of Medicine, Faculty of Medicine and Health SciencesUniversity of Sherbrooke and Research Centre of the Centre Intégré Universitaire de Santé et Services Sociaux de l'Estrie – Centre Hospitalier Universitaire de Sherbrooke (CIUSSSE‐CHUS)SherbrookeCanada
| | - Marrugo Javier
- Division of Rheumatology, Department of Medicine, Faculty of Medicine and Health SciencesUniversity of Sherbrooke and Research Centre of the Centre Intégré Universitaire de Santé et Services Sociaux de l'Estrie – Centre Hospitalier Universitaire de Sherbrooke (CIUSSSE‐CHUS)SherbrookeCanada
| | - Allard‐Chamard Hugues
- Division of Rheumatology, Department of Medicine, Faculty of Medicine and Health SciencesUniversity of Sherbrooke and Research Centre of the Centre Intégré Universitaire de Santé et Services Sociaux de l'Estrie – Centre Hospitalier Universitaire de Sherbrooke (CIUSSSE‐CHUS)SherbrookeCanada
| | - Bouchard Luigi
- Department of Biochemistry and Functional GenomicsUniversity of Sherbrooke and Research Centre of the Centre Intégré Universitaire de Santé et Services Sociaux de l'Estrie – Centre Hospitalier Universitaire de Sherbrooke (CIUSSSE‐CHUS)SherbrookeCanada
- Department of Medical BiologyCIUSS du Saguenay‐Lac‐Saint‐Jean Hôpital Universitaire de ChicoutimiSaguenayCanada
| | - Boire Gilles
- Division of Rheumatology, Department of Medicine, Faculty of Medicine and Health SciencesUniversity of Sherbrooke and Research Centre of the Centre Intégré Universitaire de Santé et Services Sociaux de l'Estrie – Centre Hospitalier Universitaire de Sherbrooke (CIUSSSE‐CHUS)SherbrookeCanada
| | - Michelle S Scott
- Department of Biochemistry and Functional GenomicsUniversity of Sherbrooke and Research Centre of the Centre Intégré Universitaire de Santé et Services Sociaux de l'Estrie – Centre Hospitalier Universitaire de Sherbrooke (CIUSSSE‐CHUS)SherbrookeCanada
| | - Roux Sophie
- Division of Rheumatology, Department of Medicine, Faculty of Medicine and Health SciencesUniversity of Sherbrooke and Research Centre of the Centre Intégré Universitaire de Santé et Services Sociaux de l'Estrie – Centre Hospitalier Universitaire de Sherbrooke (CIUSSSE‐CHUS)SherbrookeCanada
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4
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Alkhathami AG, Abdullah MR, Ahmed M, Hassan Ahmed H, Alwash SW, Muhammed Mahdi Z, Alsaikhan F, Dera AA. Bone morphogenetic protein (BMP)9 in cancer development: mechanistic, diagnostic, and therapeutic approaches? J Drug Target 2023:1-11. [PMID: 37461888 DOI: 10.1080/1061186x.2023.2236330] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Revised: 06/09/2023] [Accepted: 07/08/2023] [Indexed: 07/21/2023]
Abstract
Bone morphogenetic protein (BMP)-9 is considered a member of the transforming growth factor (TGF)β superfamily. It was first found as an inducer of bone and cartilage formation and then discovered that this factor mediates several physiologic functions and hemostasis. Besides physiological conditions, BMP9 has also been elucidated that it is involved in several pathological situations, especially cancer. In various cancers, dysregulation of BMP9 has raised the issue that BMP9 might play a conflicting role in tumour development. BMP9 binding to its receptors (BMPRs), including ALKs and BMPRII, induces canonical SMAD-dependent and non-canonical PI3K/AKT and MAPK signalling pathways in tumour cells. BMP9, via inducing apoptosis, inhibiting tumour-promoting cell signalling pathways, suppressing epithelial-mesenchymal transition (EMT) process, blocking angiogenesis, and preventing cross-talk in the tumour microenvironment, mainly exerts tumour-suppressive functions. In contrast, BMP9 triggers tumour-supportive signalling pathways, promotes EMT, and enhances angiogenesis, suggesting that BMP9 is also involved in tumour development. It has been demonstrated that modulating BMP9 expression and functions might be a promising approach to cancer treatment. It has also been indicated that evaluating BMP9 expression in cancers might be a biomarker for predicting cancer prognosis. Overall, BMP9 would provide a promising target in cancer management.
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Affiliation(s)
- Ali G Alkhathami
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, King Khalid University, Abha, Saudi Arabia
| | | | - Muhjaha Ahmed
- Medical Technical college, Al-Farahidi University, Iraq
| | | | - Sarab W Alwash
- Medical Laboratory Techniques Department, Al-Mustaqbal University College, Babylon, Iraq Hillah
| | | | - Fahad Alsaikhan
- College of Pharmacy, Prince Sattam Bin Abdulaziz University, Alkharj, Saudi Arabia
| | - Ayed A Dera
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, King Khalid University, Abha, Saudi Arabia
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5
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Lu Y, Ma ZX, Deng R, Jiang HT, Chu L, Deng ZL. The SIRT1 activator SRT2104 promotes BMP9-induced osteogenic and angiogenic differentiation in mesenchymal stem cells. Mech Ageing Dev 2022; 207:111724. [PMID: 35985370 DOI: 10.1016/j.mad.2022.111724] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Revised: 08/11/2022] [Accepted: 08/12/2022] [Indexed: 10/15/2022]
Abstract
Bone defects resulting from trauma, bone tumors, infections and skeletal abnormalities are a common osteoporotic condition with respect to clinical treatment. Of the known bone morphogenetic proteins (BMPs), BMP9 has the strongest osteogenic differentiation potential, which could be beneficial in the construction of tissue-engineered bone. Silent mating type information regulator 2 homolog-1 (SIRT1) is a highly conserved nicotinamide adenine dinucleotide-dependent deacetylase that deacetylates and modulates histone or non-histone substrates. However, the role of SIRT1 in BMP9-induced osteogenic differentiation of stem cells has not been studied. Furthermore, it is unclear whether SIRT1 interacts with the BMP/Smad and BMP/MAPK pathways in stem cells. We found that SIRT1 expression decreased gradually in a time-dependent manner during BMP9-induced osteogenic differentiation of MSCs. Interactions between SIRT1 and Smad7 promoted degradation of Smad7 and increased Smad1/5/8 phosphorylation. SRT2104, an activator of SIRT, enhanced the expression of osteogenic- and angiogenic-related proteins in BMP9-induced MSCs. In addition, we found that activation of the BMP/MAPK pathway led to osteogenic and angiogenic differentiation of MSCs. Our study demonstrated that SIRT1 expression decreased during BMP9-induced differentiation. The SIRT1 activator SRT2104 promoted BMP9-induced osteogenic and angiogenic differentiation of MSCs through the BMP/Smad and BMP/MAPK signaling pathways.
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Affiliation(s)
- Yang Lu
- Department of Orthopaedics, The Second Affiliated Hospital of Chongqing Medical University, 76 Linjiang Road, Yuzhong District, Chongqing 400010, China
| | - Zhao-Xin Ma
- Department of Orthopaedic Surgery, The First Affiliated Hospital of Chongqing Medical University, 1 Youyi Road, Yuzhong, Chongqing 400016, China
| | - Rui Deng
- Department of Orthopaedics, The Second Affiliated Hospital of Chongqing Medical University, 76 Linjiang Road, Yuzhong District, Chongqing 400010, China
| | - Hai-Tao Jiang
- Department of Orthopaedics, The Second Affiliated Hospital of Chongqing Medical University, 76 Linjiang Road, Yuzhong District, Chongqing 400010, China
| | - Lei Chu
- Department of Orthopaedics, The Second Affiliated Hospital of Chongqing Medical University, 76 Linjiang Road, Yuzhong District, Chongqing 400010, China.
| | - Zhong-Liang Deng
- Department of Orthopaedics, The Second Affiliated Hospital of Chongqing Medical University, 76 Linjiang Road, Yuzhong District, Chongqing 400010, China.
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6
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Bordukalo-Nikšić T, Kufner V, Vukičević S. The Role Of BMPs in the Regulation of Osteoclasts Resorption and Bone Remodeling: From Experimental Models to Clinical Applications. Front Immunol 2022; 13:869422. [PMID: 35558080 PMCID: PMC9086899 DOI: 10.3389/fimmu.2022.869422] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Accepted: 03/28/2022] [Indexed: 11/18/2022] Open
Abstract
In response to mechanical forces and the aging process, bone in the adult skeleton is continuously remodeled by a process in which old and damaged bone is removed by bone-resorbing osteoclasts and subsequently is replaced by new bone by bone-forming cells, osteoblasts. During this essential process of bone remodeling, osteoclastic resorption is tightly coupled to osteoblastic bone formation. Bone-resorbing cells, multinuclear giant osteoclasts, derive from the monocyte/macrophage hematopoietic lineage and their differentiation is driven by distinct signaling molecules and transcription factors. Critical factors for this process are Macrophage Colony Stimulating Factor (M-CSF) and Receptor Activator Nuclear Factor-κB Ligand (RANKL). Besides their resorption activity, osteoclasts secrete coupling factors which promote recruitment of osteoblast precursors to the bone surface, regulating thus the whole process of bone remodeling. Bone morphogenetic proteins (BMPs), a family of multi-functional growth factors involved in numerous molecular and signaling pathways, have significant role in osteoblast-osteoclast communication and significantly impact bone remodeling. It is well known that BMPs help to maintain healthy bone by stimulating osteoblast mineralization, differentiation and survival. Recently, increasing evidence indicates that BMPs not only help in the anabolic part of bone remodeling process but also significantly influence bone catabolism. The deletion of the BMP receptor type 1A (BMPRIA) in osteoclasts increased osteoblastic bone formation, suggesting that BMPR1A signaling in osteoclasts regulates coupling to osteoblasts by reducing bone-formation activity during bone remodeling. The dual effect of BMPs on bone mineralization and resorption highlights the essential role of BMP signaling in bone homeostasis and they also appear to be involved in pathological processes in inflammatory disorders affecting bones and joints. Certain BMPs (BMP2 and -7) were approved for clinical use; however, increased bone resorption rather than formation were observed in clinical applications, suggesting the role BMPs have in osteoclast activation and subsequent osteolysis. Here, we summarize the current knowledge of BMP signaling in osteoclasts, its role in osteoclast resorption, bone remodeling, and osteoblast–osteoclast coupling. Furthermore, discussion of clinical application of recombinant BMP therapy is based on recent preclinical and clinical studies.
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Affiliation(s)
- Tatjana Bordukalo-Nikšić
- Laboratory for Mineralized Tissues, Center for Translational and Clinical Research, University of Zagreb School of Medicine, Zagreb, Croatia
| | - Vera Kufner
- Laboratory for Mineralized Tissues, Center for Translational and Clinical Research, University of Zagreb School of Medicine, Zagreb, Croatia
| | - Slobodan Vukičević
- Laboratory for Mineralized Tissues, Center for Translational and Clinical Research, University of Zagreb School of Medicine, Zagreb, Croatia
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7
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Genetics and Vascular Biology of Brain Vascular Malformations. Stroke 2022. [DOI: 10.1016/b978-0-323-69424-7.00012-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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8
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Fujioka-Kobayashi M, Marjanowski SD, Kono M, Hino S, Saulacic N, Schaller B. Osteoinductive potential of recombinant BMP-9 in bone defects of mice treated with antiresorptive agents. Int J Oral Maxillofac Surg 2021; 51:566-575. [PMID: 34454793 DOI: 10.1016/j.ijom.2021.08.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Revised: 05/19/2021] [Accepted: 08/12/2021] [Indexed: 11/26/2022]
Abstract
The aim of the present study was to investigate the effects of recombinant human (rh)BMP-9 on bone regenerative potential in a mouse model of antibody-mediated antiresorptive therapy (AMART). A monoclonal anti-murine receptor activator of nuclear factor-kappa B ligand (RANKL) antibody (mAb) was used to create an AMART model in mice. rhBMP-9 combined with collagen membrane was implanted in calvarial defects in mAb-treated mice. After 4 weeks, the bone formative potential in the defects was evaluated by micro-computed tomography and histological approaches. The groups implanted with rhBMP-9-containing collagen membranes demonstrated substantial osteopromotive potential, with significantly greater new bone volume (Sham + BMP-9 group; 0.86 ± 0.29 mm3 and mAb + BMP-9 group; 0.64 ± 0.16 mm3) than control PBS-membranes (Sham + PBS group; 0.44 ± 0.29 mm3 and mAb + PBS group; 0.24 ± 0.12 mm3) in both sham and mAb-treated mice. In line with in vivo study, bone marrow cells isolated from both sham and mAb-treated mice confirmed greater osteogenic potential upon stimulation with rhBMP-9 in vitro. These findings suggest for the first time that local rhBMP-9 administration might be a strategy to accelerate bone regeneration in the context of AMART.
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Affiliation(s)
- M Fujioka-Kobayashi
- Department of Cranio-Maxillofacial Surgery, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland; Department of Oral and Maxillofacial Surgery, School of Life Dentistry at Tokyo, The Nippon Dental University, Tokyo, Japan.
| | - S D Marjanowski
- Department of Cranio-Maxillofacial Surgery, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - M Kono
- Department of Cranio-Maxillofacial Surgery, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland; Department of Oral and Maxillofacial Surgery, Tokyo Medical University, Tokyo, Japan
| | - S Hino
- Department of Cranio-Maxillofacial Surgery, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland; Department of Oral and Maxillofacial Surgery, Saitama Medical Center, Saitama Medical University, Saitama, Japan
| | - N Saulacic
- Department of Cranio-Maxillofacial Surgery, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - B Schaller
- Department of Cranio-Maxillofacial Surgery, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
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9
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Heubel B, Nohe A. The Role of BMP Signaling in Osteoclast Regulation. J Dev Biol 2021; 9:24. [PMID: 34203252 PMCID: PMC8293073 DOI: 10.3390/jdb9030024] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Revised: 06/02/2021] [Accepted: 06/18/2021] [Indexed: 12/12/2022] Open
Abstract
The osteogenic effects of Bone Morphogenetic Proteins (BMPs) were delineated in 1965 when Urist et al. showed that BMPs could induce ectopic bone formation. In subsequent decades, the effects of BMPs on bone formation and maintenance were established. BMPs induce proliferation in osteoprogenitor cells and increase mineralization activity in osteoblasts. The role of BMPs in bone homeostasis and repair led to the approval of BMP2 by the Federal Drug Administration (FDA) for anterior lumbar interbody fusion (ALIF) to increase the bone formation in the treated area. However, the use of BMP2 for treatment of degenerative bone diseases such as osteoporosis is still uncertain as patients treated with BMP2 results in the stimulation of not only osteoblast mineralization, but also osteoclast absorption, leading to early bone graft subsidence. The increase in absorption activity is the result of direct stimulation of osteoclasts by BMP2 working synergistically with the RANK signaling pathway. The dual effect of BMPs on bone resorption and mineralization highlights the essential role of BMP-signaling in bone homeostasis, making it a putative therapeutic target for diseases like osteoporosis. Before the BMP pathway can be utilized in the treatment of osteoporosis a better understanding of how BMP-signaling regulates osteoclasts must be established.
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Affiliation(s)
- Brian Heubel
- Department of Biological Sciences, University of Delaware, Newark, DE 19716, USA
| | - Anja Nohe
- Department of Biological Sciences, University of Delaware, Newark, DE 19716, USA
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Xu Y, Yang Y, Hua Z, Li S, Yang Z, Liu Q, Fu G, Ji P, Wu Q. BMP2 immune complexes promote new bone formation by facilitating the direct contact between osteoclasts and osteoblasts. Biomaterials 2021; 275:120890. [PMID: 34130144 DOI: 10.1016/j.biomaterials.2021.120890] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Revised: 04/22/2021] [Accepted: 05/06/2021] [Indexed: 11/17/2022]
Abstract
BMP2 antibody is proposed as a promising replacement for rhBMP2 in bone tissue engineering. Although studies have demonstrated its osteoinductive efficacy, the underlying osteogenic mechanism and adverse reactions of specific BMP2 antibody are not clarified yet, making it difficult to optimize the antibody for future application. By establishing BMP2 immune complexes (BMP2-ICs) ex vivo, we were able to introduce BMP2-ICs directly in vivo and found that BMP2-ICs promoted bone formation while suppressing osteoclastogenesis. However, ex vivo osteoclastogenic assays showed that BMP2-ICs promoted osteoclastogenesis by binding FcγR and activating PLCγ2 phosphorylation. Given that BMP2-ICs react with osteoblast and osteoclast lineage cells by the conjugated BMP2 domain and the Fc domain respectively, we introduced BMP2-ICs into coculture system of the two lineage cells and found that BMP2-ICs promoted osteogenesis while suppressing osteoclastogenesis by facilitating osteoblast-osteoclast contact and activating the EphrinB2-EphB4 signaling. This bidirectional function of BMP2-ICs was reproduced in the cranial bone resorption model, where osteoblast and osteoclast lineage cells co-localized. This study excluded the hidden problem of osteoclast overactivation that usually comes with rhBMP2 and clarified the first evidence of the mechanism of antibody-mediated bone regeneration, suggesting BMP2-ICs may present a promising therapy for bone diseases related with disrupted osteoclast-osteoblast interaction.
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Affiliation(s)
- Yamei Xu
- Stomatological Hospital of Chongqing Medical University, Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, 401147, China
| | - Yao Yang
- Stomatological Hospital of Chongqing Medical University, Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, 401147, China
| | - Ziyi Hua
- Stomatological Hospital of Chongqing Medical University, Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, 401147, China
| | - Shuang Li
- Stomatological Hospital of Chongqing Medical University, Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, 401147, China
| | - Zhenyu Yang
- Stomatological Hospital of Chongqing Medical University, Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, 401147, China
| | - Qianzi Liu
- Stomatological Hospital of Chongqing Medical University, Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, 401147, China
| | - Gang Fu
- Stomatological Hospital of Chongqing Medical University, Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, 401147, China; Department of Oral Implantology, Stomatological Hospital of Chongqing Medical University, Chongqing, 401147, China
| | - Ping Ji
- Stomatological Hospital of Chongqing Medical University, Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, 401147, China
| | - Qingqing Wu
- Stomatological Hospital of Chongqing Medical University, Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing, 401147, China; Department of Oral Implantology, Stomatological Hospital of Chongqing Medical University, Chongqing, 401147, China.
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11
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Wang Y, Sima X, Ying Y, Huang Y. Exogenous BMP9 promotes lung fibroblast HFL-1 cell activation via ALK1/Smad1/5 signaling in vitro. Exp Ther Med 2021; 22:728. [PMID: 34007337 PMCID: PMC8120641 DOI: 10.3892/etm.2021.10160] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Accepted: 06/24/2020] [Indexed: 12/13/2022] Open
Abstract
Bone morphogenetic protein 9 (BMP9) has recently been described as a crucial regulator in modulating fibroblast-type cell activation. Activin receptor-like kinase 1 (ALK1) is a high affinity receptor for BMP9 that exerts its role via Smad1/5. However, the functional roles of BMP9 in activating lung fibroblasts and the underlying signaling pathway are not completely understood. The present study aimed to explore the effect of exogenous BMP9 on human lung fibroblast HFL-1 cell proliferation and differentiation, as well as the potential role of the ALK1/Smad1/5 signaling pathway. In the present study, fibroblast proliferation was assessed using Cell Counting Kit-8 and colony formation assays, and the mRNA and protein expression of target genes was examined using reverse transcription-quantitative PCR and western blot assays, respectively. Compared with the control group, BMP9 treatment increased HFL-1 cell proliferation, mRNA and protein expression of differentiated markers, including α-smooth muscle actin, type I collagen and type III collagen, and the expression of ALK1 and phosphorylated Smad1/5 expression. Furthermore, the effects of BMP9 were partially rescued by dorsomorphin-1, an inhibitor of ALK1. The results indicated that BMP9 may serve as a key inducer of lung fibroblast activation and ALK1/Smad1/5 signaling might be associated with BMP9-mediated effects in HFL-1 cells. Therefore, the present study highlighted that the potential role of the BMP9/ALK1/Smad1/5 signaling pathway in the development of pulmonary fibrosis requires further investigation.
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Affiliation(s)
- Yaqun Wang
- Department of Pathophysiology, Basic Medical College, Nanchang University, Nanchang, Jiangxi 330006, P.R. China.,Graduate College, Nanchang University, Nanchang, Jiangxi 330006, P.R. China
| | - Xiaonan Sima
- Nanchang Joint Program, Queen Mary School, Nanchang University, Nanchang, Jiangxi 330031, P.R. China
| | - Ying Ying
- Department of Pathophysiology, Basic Medical College, Nanchang University, Nanchang, Jiangxi 330006, P.R. China
| | - Yonghong Huang
- Department of Pathophysiology, Basic Medical College, Nanchang University, Nanchang, Jiangxi 330006, P.R. China
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12
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Povoroznyuk VV, Dedukh NV, Bystrytska MA, Shapovalov VS. Bone remodeling stages under physiological conditions and glucocorticoid in excess: Focus on cellular and molecular mechanisms. REGULATORY MECHANISMS IN BIOSYSTEMS 2021. [DOI: 10.15421/022130] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
This review provides a rationale for the cellular and molecular mechanisms of bone remodeling stages under physiological conditions and glucocorticoids (GCs) in excess. Remodeling is a synchronous process involving bone resorption and formation, proceeding through stages of: (1) resting bone, (2) activation, (3) bone resorption, (4) reversal, (5) formation, (6) termination. Bone remodeling is strictly controlled by local and systemic regulatory signaling molecules. This review presents current data on the interaction of osteoclasts, osteoblasts and osteocytes in bone remodeling and defines the role of osteoprogenitor cells located above the resorption area in the form of canopies and populating resorption cavities. The signaling pathways of proliferation, differentiation, viability, and cell death during remodeling are presented. The study of signaling pathways is critical to understanding bone remodeling under normal and pathological conditions. The main signaling pathways that control bone resorption and formation are RANK / RANKL / OPG; M-CSF – c-FMS; canonical and non-canonical signaling pathways Wnt; Notch; MARK; TGFβ / SMAD; ephrinB1/ephrinB2 – EphB4, TNFα – TNFβ, and Bim – Bax/Bak. Cytokines, growth factors, prostaglandins, parathyroid hormone, vitamin D, calcitonin, and estrogens also act as regulators of bone remodeling. The role of non-encoding microRNAs and long RNAs in the process of bone cell differentiation has been established. MicroRNAs affect many target genes, have both a repressive effect on bone formation and activate osteoblast differentiation in different ways. Excess of glucocorticoids negatively affects all stages of bone remodeling, disrupts molecular signaling, induces apoptosis of osteocytes and osteoblasts in different ways, and increases the life cycle of osteoclasts. Glucocorticoids disrupt the reversal stage, which is critical for the subsequent stages of remodeling. Negative effects of GCs on signaling molecules of the canonical Wingless (WNT)/β-catenin pathway and other signaling pathways impair osteoblastogenesis. Under the influence of excess glucocorticoids biosynthesis of biologically active growth factors is reduced, which leads to a decrease in the expression by osteoblasts of molecules that form the osteoid. Glucocorticoids stimulate the expression of mineralization inhibitor proteins, osteoid mineralization is delayed, which is accompanied by increased local matrix demineralization. Although many signaling pathways involved in bone resorption and formation have been discovered and described, the temporal and spatial mechanisms of their sequential turn-on and turn-off in cell proliferation and differentiation require additional research.
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13
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Qian S, Tang Y, Tang QQ. Adipose tissue plasticity and the pleiotropic roles of BMP signaling. J Biol Chem 2021; 296:100678. [PMID: 33872596 PMCID: PMC8131923 DOI: 10.1016/j.jbc.2021.100678] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2020] [Revised: 04/11/2021] [Accepted: 04/15/2021] [Indexed: 12/15/2022] Open
Abstract
Adipose tissues, including white, beige, and brown adipose tissue, have evolved to be highly dynamic organs. Adipose tissues undergo profound changes during development and regeneration and readily undergo remodeling to meet the demands of an everchanging metabolic landscape. The dynamics are determined by the high plasticity of adipose tissues, which contain various cell types: adipocytes, immune cells, endothelial cells, nerves, and fibroblasts. There are numerous proteins that participate in regulating the plasticity of adipose tissues. Among these, bone morphogenetic proteins (BMPs) were initially found to regulate the differentiation of adipocytes, and they are being reported to have pleiotropic functions by emerging studies. Here, in the first half of the article, we summarize the plasticity of adipocytes and macrophages, which are two groups of cells targeted by BMP signaling in adipose tissues. We then review how BMPs regulate the differentiation, death, and lipid metabolism of adipocytes. In addition, the potential role of BMPs in regulating adipose tissue macrophages is considered. Finally, the expression of BMPs in adipose tissues and their metabolic relevance are discussed.
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Affiliation(s)
- Shuwen Qian
- The Key Laboratory of Metabolism and Molecular Medicine of the Ministry of Education, Department of Biochemistry and Molecular Biology of School of Basic Medical Sciences, and Department of Endocrinology and Metabolism of Zhongshan Hospital, Fudan University, Shanghai, China
| | - Yan Tang
- The Key Laboratory of Metabolism and Molecular Medicine of the Ministry of Education, Department of Biochemistry and Molecular Biology of School of Basic Medical Sciences, and Department of Endocrinology and Metabolism of Zhongshan Hospital, Fudan University, Shanghai, China
| | - Qi-Qun Tang
- The Key Laboratory of Metabolism and Molecular Medicine of the Ministry of Education, Department of Biochemistry and Molecular Biology of School of Basic Medical Sciences, and Department of Endocrinology and Metabolism of Zhongshan Hospital, Fudan University, Shanghai, China.
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14
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Roy M, Stephens E, Bouhour S, Roux S. RabGAP TBC1D25 is involved in human osteoclast activity. Eur J Cell Biol 2020; 100:151145. [PMID: 33353759 DOI: 10.1016/j.ejcb.2020.151145] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Revised: 12/06/2020] [Accepted: 12/08/2020] [Indexed: 01/01/2023] Open
Abstract
The osteoclast cell polarization and the ruffled border formation during bone resorption are major vesicle trafficking events. Rab GTPases have been shown to be involved in these processes, however very little is known about their regulators, such as Rab GTPase activating proteins (RabGAPs). In osteoclasts, we previously identified two spliced isoforms of TBC1D25, encoding a RabGAP which had never been studied in these cells. Using in vitro cultures, we evaluated the expression of TBC1D25 in human osteoclasts. TBC1D25 was expressed at the sealing zone co-localizing with F-actin, with an annular distribution, and also at the ruffled membrane with a less intense colocalization with LAMP2 and cathepsin K, but none with Rab7 or V-ATPase. Inhibiting TBC1D25 expression significantly decreased bone resorption, as well as the formation of multinucleated cells and the number of nuclei per cell. These results suggest that TBC1D25 has a role in bone resorption via the regulation of osteoclast polarization and resorption, and multinucleation as well.
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Affiliation(s)
- Michèle Roy
- Division of Rheumatology, Department of Medicine, Faculty of Medicine and Health Sciences, University of Sherbrooke, 3001, 12th Avenue North, Sherbrooke, PQ, Canada
| | - Elizabeth Stephens
- Division of Rheumatology, Department of Medicine, Faculty of Medicine and Health Sciences, University of Sherbrooke, 3001, 12th Avenue North, Sherbrooke, PQ, Canada
| | - Sophie Bouhour
- Division of Rheumatology, Department of Medicine, Faculty of Medicine and Health Sciences, University of Sherbrooke, 3001, 12th Avenue North, Sherbrooke, PQ, Canada
| | - Sophie Roux
- Division of Rheumatology, Department of Medicine, Faculty of Medicine and Health Sciences, University of Sherbrooke, 3001, 12th Avenue North, Sherbrooke, PQ, Canada.
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15
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Lademann F, Hofbauer LC, Rauner M. The Bone Morphogenetic Protein Pathway: The Osteoclastic Perspective. Front Cell Dev Biol 2020; 8:586031. [PMID: 33178699 PMCID: PMC7597383 DOI: 10.3389/fcell.2020.586031] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Accepted: 09/29/2020] [Indexed: 12/29/2022] Open
Abstract
Bone health crucially relies on constant bone remodeling and bone regeneration, both tightly controlled processes requiring bone formation and bone resorption. Plenty of evidence identifies bone morphogenetic proteins (BMP) as major players in osteoblast differentiation and thus, bone formation. However, in recent past years, researchers also increasingly reported on the pivotal role of these multi-functional growth factors in osteoclast formation and activity. This review aims to summarize the current knowledge of BMP signaling within the osteoclast lineage, its role in bone resorption, and osteoblast-osteoclast coupling. Furthermore, subsequent clinical implications for recombinant BMP therapy will be discussed in view of recent preclinical and clinical studies.
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Affiliation(s)
- Franziska Lademann
- Department of Medicine III, Technische Universität Dresden, Dresden, Germany
- Center for Healthy Aging, Technische Universität Dresden, Dresden, Germany
| | - Lorenz C. Hofbauer
- Department of Medicine III, Technische Universität Dresden, Dresden, Germany
- Center for Healthy Aging, Technische Universität Dresden, Dresden, Germany
| | - Martina Rauner
- Department of Medicine III, Technische Universität Dresden, Dresden, Germany
- Center for Healthy Aging, Technische Universität Dresden, Dresden, Germany
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16
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Influence of the TGF-β Superfamily on Osteoclasts/Osteoblasts Balance in Physiological and Pathological Bone Conditions. Int J Mol Sci 2020; 21:ijms21207597. [PMID: 33066607 PMCID: PMC7589189 DOI: 10.3390/ijms21207597] [Citation(s) in RCA: 63] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Revised: 10/09/2020] [Accepted: 10/10/2020] [Indexed: 12/19/2022] Open
Abstract
The balance between bone forming cells (osteoblasts/osteocytes) and bone resorbing cells (osteoclasts) plays a crucial role in tissue homeostasis and bone repair. Several hormones, cytokines, and growth factors-in particular the members of the TGF-β superfamily such as the bone morphogenetic proteins-not only regulate the proliferation, differentiation, and functioning of these cells, but also coordinate the communication between them to ensure an appropriate response. Therefore, this review focuses on TGF-β superfamily and its influence on bone formation and repair, through the regulation of osteoclastogenesis, osteogenic differentiation of stem cells, and osteoblasts/osteoclasts balance. After introducing the main types of bone cells, their differentiation and cooperation during bone remodeling and fracture healing processes are discussed. Then, the TGF-β superfamily, its signaling via canonical and non-canonical pathways, as well as its regulation by Wnt/Notch or microRNAs are described and discussed. Its important role in bone homeostasis, repair, or disease is also highlighted. Finally, the clinical therapeutic uses of members of the TGF-β superfamily and their associated complications are debated.
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17
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Tang N, Rao S, Ying Y, Huang Y. New insights into BMP9 signaling in organ fibrosis. Eur J Pharmacol 2020; 882:173291. [DOI: 10.1016/j.ejphar.2020.173291] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Revised: 05/15/2020] [Accepted: 06/16/2020] [Indexed: 12/13/2022]
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18
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Activation of TGF-β Canonical and Noncanonical Signaling in Bovine Lactoferrin-Induced Osteogenic Activity of C3H10T1/2 Mesenchymal Stem Cells. Int J Mol Sci 2019; 20:ijms20122880. [PMID: 31200471 PMCID: PMC6627184 DOI: 10.3390/ijms20122880] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Revised: 05/26/2019] [Accepted: 05/31/2019] [Indexed: 01/14/2023] Open
Abstract
Lactoferrin (LF) is known to modulate the bone anabolic effect. Previously, we and others reported that the effects of LF on the bone may be conferred by the stimulation of transforming growth factor β (TGF-β) signaling in the preosteoblast. However, the underlying molecular mechanisms of LF-induced osteogenic differentiation of mesenchymal stem cells (MSCs) has not been identified. In this study, we tested the hypothesis that the effects of LF on osteogenesis of MSCs required mediation by TGF-β Receptors and activating TGF-β signaling pathway. Using siRNA silencing technology, the knockdown of TGF-β Receptor II (TβRII) could significantly attenuate LF’s effect on the proliferation rate and alkaline phosphatase (ALP) activity of MSCs. It indicated that LF induced osteogenic activity that is dependent on TβRII in C3H10T1/2. Subsequently, it was shown that LF activated Smad2. Downregulating TGF-β Receptor I (TβRI) with SB431542 attenuated the expression of p-Smad2 and p-P38, also the LF-induced the osteogenic activity. Besides, the stimulation by LF on the expression of Osteocalcin (OCN), Osteopontin (OPN), Collagen-2a1 (Col2a1), and Fibroblast Growth Factor 2 (FGF2) were abolished by SB431542. These results confirmed that LF induced osteogenic activity though the TGF-β canonical and noncanonical signaling pathway. This study provided the first evidence of the signaling mechanisms of LF’s effect on osteogenesis in MSCs.
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Bone morphogenetic proteins: Their role in regulating osteoclast differentiation. Bone Rep 2019; 10:100207. [PMID: 31193008 PMCID: PMC6513777 DOI: 10.1016/j.bonr.2019.100207] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/06/2018] [Revised: 04/09/2019] [Accepted: 05/02/2019] [Indexed: 02/07/2023] Open
Abstract
The ability to create recombinant bone morphogenetic proteins (BMPs) in recent years has led to their rise as a common clinical adjuvant. Their application varies, from spinal fixation to repairing palatal clefts, to coating implants for osseointegration. In recent years questions have been raised as to the efficacy of BMPs in several of these procedures. These questions are due to the unwanted side effect of BMPs on other cell types, such as osteoclasts which can resorb bone at the graft/implant site. However, most BMP research focuses on the anabolic osteoinductive effects of BMPs on osteoblasts rather than its counterpart- stimulation of the osteoclasts, which are cells responsible for resorbing bone. In this review, we discuss the data available from multiple in-vitro and in-vivo BMP-related knockout models to elucidate the different functions BMPs have on osteoclast differentiation and activity. BMPs can act directly on osteoclasts to regulate differentiation and activity. Osteoclasts express multiple BMP signaling components. BMPs signal through both SMAD independent and dependent mechanisms in osteoclasts. SMAD dependent BMP signaling regulates osteoclast-osteoblast coupling factors.
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20
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Abstract
Bone morphogenetic proteins (BMPs) constitute the largest subdivision of the transforming growth factor-β family of ligands. BMPs exhibit widespread utility and pleiotropic, context-dependent effects, and the strength and duration of BMP pathway signaling is tightly regulated at numerous levels via mechanisms operating both inside and outside the cell. Defects in the BMP pathway or its regulation underlie multiple human diseases of different organ systems. Yet much remains to be discovered about the BMP pathway in its original context, i.e., the skeleton. In this review, we provide a comprehensive overview of the intricacies of the BMP pathway and its inhibitors in bone development, homeostasis, and disease. We frame the content of the review around major unanswered questions for which incomplete evidence is available. First, we consider the gene regulatory network downstream of BMP signaling in osteoblastogenesis. Next, we examine why some BMP ligands are more osteogenic than others and what factors limit BMP signaling during osteoblastogenesis. Then we consider whether specific BMP pathway components are required for normal skeletal development, and if the pathway exerts endogenous effects in the aging skeleton. Finally, we propose two major areas of need of future study by the field: greater resolution of the gene regulatory network downstream of BMP signaling in the skeleton, and an expanded repertoire of reagents to reliably and specifically inhibit individual BMP pathway components.
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Affiliation(s)
- Jonathan W Lowery
- Division of Biomedical Science, Marian University College of Osteopathic Medicine , Indianapolis, Indiana ; and Department of Developmental Biology, Harvard School of Dental Medicine , Boston, Massachusetts
| | - Vicki Rosen
- Division of Biomedical Science, Marian University College of Osteopathic Medicine , Indianapolis, Indiana ; and Department of Developmental Biology, Harvard School of Dental Medicine , Boston, Massachusetts
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21
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Lee K, Seo I, Choi MH, Jeong D. Roles of Mitogen-Activated Protein Kinases in Osteoclast Biology. Int J Mol Sci 2018; 19:ijms19103004. [PMID: 30275408 PMCID: PMC6213329 DOI: 10.3390/ijms19103004] [Citation(s) in RCA: 154] [Impact Index Per Article: 25.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2018] [Revised: 09/20/2018] [Accepted: 09/27/2018] [Indexed: 01/20/2023] Open
Abstract
Bone undergoes continuous remodeling, which is homeostatically regulated by concerted communication between bone-forming osteoblasts and bone-degrading osteoclasts. Multinucleated giant osteoclasts are the only specialized cells that degrade or resorb the organic and inorganic bone components. They secrete proteases (e.g., cathepsin K) that degrade the organic collagenous matrix and establish localized acidosis at the bone-resorbing site through proton-pumping to facilitate the dissolution of inorganic mineral. Osteoporosis, the most common bone disease, is caused by excessive bone resorption, highlighting the crucial role of osteoclasts in intact bone remodeling. Signaling mediated by mitogen-activated protein kinases (MAPKs), including extracellular signal-regulated kinase (ERK), c-Jun N-terminal kinase (JNK), and p38, has been recognized to be critical for normal osteoclast differentiation and activation. Various exogenous (e.g., toll-like receptor agonists) and endogenous (e.g., growth factors and inflammatory cytokines) stimuli contribute to determining whether MAPKs positively or negatively regulate osteoclast adhesion, migration, fusion and survival, and osteoclastic bone resorption. In this review, we delineate the unique roles of MAPKs in osteoclast metabolism and provide an overview of the upstream regulators that activate or inhibit MAPKs and their downstream targets. Furthermore, we discuss the current knowledge about the differential kinetics of ERK, JNK, and p38, and the crosstalk between MAPKs in osteoclast metabolism.
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Affiliation(s)
- Kyunghee Lee
- Department of Microbiology, Laboratory of Bone Metabolism and Control, Yeungnam University College of Medicine, Daegu 42415, Korea.
| | - Incheol Seo
- Department of Microbiology, Laboratory of Bone Metabolism and Control, Yeungnam University College of Medicine, Daegu 42415, Korea.
| | - Mun Hwan Choi
- Department of Microbiology, Laboratory of Bone Metabolism and Control, Yeungnam University College of Medicine, Daegu 42415, Korea.
| | - Daewon Jeong
- Department of Microbiology, Laboratory of Bone Metabolism and Control, Yeungnam University College of Medicine, Daegu 42415, Korea.
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22
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FAK and BMP-9 synergistically trigger osteogenic differentiation and bone formation of adipose derived stem cells through enhancing Wnt-β-catenin signaling. Biomed Pharmacother 2018; 105:753-757. [DOI: 10.1016/j.biopha.2018.04.185] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2018] [Revised: 04/26/2018] [Accepted: 04/29/2018] [Indexed: 12/11/2022] Open
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23
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Li Y, Wang J, Ren F, Zhang W, Zhang H, Zhao L, Zhang M, Cui W, Wang X, Guo H. Lactoferrin Promotes Osteogenesis through TGF-β Receptor II Binding in Osteoblasts and Activation of Canonical TGF-β Signaling in MC3T3-E1 Cells and C57BL/6J Mice. J Nutr 2018; 148:1285-1292. [PMID: 29931165 DOI: 10.1093/jn/nxy097] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2018] [Accepted: 05/24/2018] [Indexed: 01/21/2023] Open
Abstract
Background Lactoferrin (LF), as a major functional protein in dairy products, is known to modulate bone anabolic effects. However, the underlying molecular mechanisms remain unclear; the receptor of LF in osteoblast differentiation has not been identified. Objective The aims of the study were to 1) illuminate whether the receptor of LF in osteoblast differentiation is transforming growth factor-β (TGF-β) receptor (TβR) II and 2) determine whether the TGF-β signaling pathway is activated by LF in promoting osteogenesis in vitro and in vivo, in addition to P38 and extracellular signal-regulated kinase (ERK) pathways. Methods We utilized co-immunoprecipitation to detect any binding of LF to TβRII. Subsequently, the role of the TGF-β signaling pathway involved in LF-induced osteoblast proliferation and differentiation was determined by inhibition of TβRI activity by inhibition and knockout of TβRII expression by small guide RNA (sgRNAs) in MC3T3-E1 cells. In addition, 4-wk-old male C57BL/6J mice were orally administered 100 mg LF/kg body weight for 16 wk, after which any activation of the TGF-β signaling pathway in vivo was measured by Western blots. Results LF was shown to directly interact with the TβRII protein and to activate the TGF-β signaling pathway in MC3T3-E1 cells. Inhibition of TβRI activity and knockout TβRII expression both attenuated the stimulation of LF in osteoblast proliferation and differentiation by 30-50%. LF-induced activation of TGF-β canonical signaling resulted in upregulation of osteogenic factors. Moreover, the expression of phosphorylated-drosophila mothers against decapentaplegic protein 2 (SMAD2) was increased by 1-fold after LF treatment in the femoral tissue of mice. Conclusions This study provides evidence identifying TβRII as an LF receptor in LF-induced osteoblast differentiation. In addition, the TβRII-dependent TGF-β canonical signaling pathways were proven to play an important role in mediating LF-induced osteogenesis both in MC3T3-E1 cells and in C57BL/6J mice.
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Affiliation(s)
- Yixuan Li
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China
| | - Jingxuan Wang
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China.,Key Laboratory of Functional Dairy, China Agricultural University, Beijing, China
| | - Fazheng Ren
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China.,Key Laboratory of Functional Dairy, China Agricultural University, Beijing, China
| | - Wei Zhang
- Key Laboratory of Functional Dairy, China Agricultural University, Beijing, China
| | - Hao Zhang
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China
| | - Liang Zhao
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China
| | - Ming Zhang
- Key Laboratory of Functional Dairy, China Agricultural University, Beijing, China
| | - Wei Cui
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China.,Institute of Reproductive and Developmental Biology, Department of Surgery and Cancer, Imperial College London, London, United Kingdom
| | - Xiaobin Wang
- Department of Population, Family, and Reproductive Health, Johns Hopkins University Bloomberg School of Public Health, Baltimore, MD
| | - Huiyuan Guo
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, China.,Key Laboratory of Functional Dairy, China Agricultural University, Beijing, China
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24
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Yu FY, Xie CQ, Sun JT, Peng W, Huang XW. Overexpressed miR-145 inhibits osteoclastogenesis in RANKL-induced bone marrow-derived macrophages and ovariectomized mice by regulation of Smad3. Life Sci 2018; 202:11-20. [PMID: 29577879 DOI: 10.1016/j.lfs.2018.03.042] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Revised: 03/12/2018] [Accepted: 03/21/2018] [Indexed: 12/21/2022]
Abstract
BACKGROUND MicroRNAs (miRs) play an important role in osteoclastogenesis. However, no study has investigated the underlying molecular mechanisms of miR-145 in this process. The purpose of the present study was to investigate the role of miR-145 and its post-transcriptional mechanism in the progression of osteoclast differentiation. METHODS Macrophage colony stimulating factor (M-CSF) and receptor activator of nuclear factor-kB ligand (RANKL) were used to induce osteoclastogenesis originated from bone marrow-derived macrophages (BMMs). Female C57BL/6J mice were divided into sham, OVX, OVX + NC-agomir and OVX + miR-145-agomir groups. Tartrate-resistant acid phosphatase (TRAP) staining was performed to identify osteoclasts in-vitro and in-vivo. The mRNA and protein levels in osteoclast and tibia were assayed by qRT-PCR and western blotting, respectively. RESULTS miR-145 expression was inhibited in RANKL-induced osteoclastogenesis, whereas overexpression of miR-145 attenuated it. We further found that Smad3 is a direct target gene of miR-145 by binding with its 3'-UTR. Overexpression of miR-145 significantly suppressed Smad3 mRNA and protein expression. In-vivo, miR-145 agomir treatment inhibited osteoclast activity in OVX mice by inhibiting Smad3 expression. CONCLUSION We provide the evidence that over-expression of miR-145 could inhibit osteoclast differentiation, at least partially, by decreasing Smad3 expression.
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Affiliation(s)
- Fang-Yuan Yu
- Department of Orthopedic, the 309th Hospital of PLA, Beijing 100091, China
| | - Cong-Qin Xie
- Department of Orthopedic, the 309th Hospital of PLA, Beijing 100091, China
| | - Ji-Tong Sun
- Department of Orthopedic, the 309th Hospital of PLA, Beijing 100091, China
| | - Wei Peng
- Department of Orthopedic, the 309th Hospital of PLA, Beijing 100091, China
| | - Xun-Wu Huang
- Department of Orthopedic, the 309th Hospital of PLA, Beijing 100091, China.
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25
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Pirosa A, Gottardi R, Alexander PG, Tuan RS. Engineering in-vitro stem cell-based vascularized bone models for drug screening and predictive toxicology. Stem Cell Res Ther 2018; 9:112. [PMID: 29678192 PMCID: PMC5910611 DOI: 10.1186/s13287-018-0847-8] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
The production of veritable in-vitro models of bone tissue is essential to understand the biology of bone and its surrounding environment, to analyze the pathogenesis of bone diseases (e.g., osteoporosis, osteoarthritis, osteomyelitis, etc.), to develop effective therapeutic drug screening, and to test potential therapeutic strategies. Dysregulated interactions between vasculature and bone cells are often related to the aforementioned pathologies, underscoring the need for a bone model that contains engineered vasculature. Due to ethical restraints and limited prediction power of animal models, human stem cell-based tissue engineering has gained increasing relevance as a candidate approach to overcome the limitations of animals and to serve as preclinical models for drug testing. Since bone is a highly vascularized tissue, the concomitant development of vasculature and mineralized matrix requires a synergistic interaction between osteogenic and endothelial precursors. A number of experimental approaches have been used to achieve this goal, such as the combination of angiogenic factors and three-dimensional scaffolds, prevascularization strategies, and coculture systems. In this review, we present an overview of the current models and approaches to generate in-vitro stem cell-based vascularized bone, with emphasis on the main challenges of vasculature engineering. These challenges are related to the choice of biomaterials, scaffold fabrication techniques, and cells, as well as the type of culturing conditions required, and specifically the application of dynamic culture systems using bioreactors.
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Affiliation(s)
- Alessandro Pirosa
- Center for Cellular and Molecular Engineering, Department of Orthopaedic Surgery, University of Pittsburgh School of Medicine, 450 Technology Drive, Pittsburgh, PA 15219 USA
| | - Riccardo Gottardi
- Center for Cellular and Molecular Engineering, Department of Orthopaedic Surgery, University of Pittsburgh School of Medicine, 450 Technology Drive, Pittsburgh, PA 15219 USA
- Ri.MED Foundation, Via Bandiera 11, Palermo, 90133 Italy
| | - Peter G. Alexander
- Center for Cellular and Molecular Engineering, Department of Orthopaedic Surgery, University of Pittsburgh School of Medicine, 450 Technology Drive, Pittsburgh, PA 15219 USA
| | - Rocky S. Tuan
- Center for Cellular and Molecular Engineering, Department of Orthopaedic Surgery, University of Pittsburgh School of Medicine, 450 Technology Drive, Pittsburgh, PA 15219 USA
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26
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Zylbersztejn F, Flores-Violante M, Voeltzel T, Nicolini FE, Lefort S, Maguer-Satta V. The BMP pathway: A unique tool to decode the origin and progression of leukemia. Exp Hematol 2018; 61:36-44. [PMID: 29477370 DOI: 10.1016/j.exphem.2018.02.005] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2017] [Revised: 02/08/2018] [Accepted: 02/13/2018] [Indexed: 12/25/2022]
Abstract
The microenvironment (niche) governs the fate of stem cells (SCs) by balancing self-renewal and differentiation. Increasing evidence indicates that the tumor niche plays an active role in cancer, but its important properties for tumor initiation progression and resistance remain to be identified. Clinical data show that leukemic stem cell (LSC) survival is responsible for disease persistence and drug resistance, probably due to their sustained interactions with the tumor niche. Bone morphogenetic protein (BMP) signaling is a key pathway controlling stem cells and their niche. BMP2 and BMP4 are important in both the normal and the cancer context. Several studies have revealed profound alterations of the BMP signaling in cancer SCs, with major deregulations of the BMP receptors and their downstream signaling elements. This was illustrated in the hematopoietic system by pioneer studies in chronic myelogenous leukemia that may now be expanded to acute myeloid leukemia and lymphoid leukemia, as reviewed here. At diagnosis, cells from the leukemic microenvironment are the major providers of soluble BMPs. Conversely, LSCs display altered receptors and downstream BMP signaling elements accompanied by altered functional responses to BMPs. These studies reveal the role of BMPs in tumor initiation, in addition to their known effects in later stages of transformation and progression. They also reveal the importance of BMPs in fueling cell transformation and expansion by overamplifying a natural SC response. This mechanism may explain the survival of LSCs independently of the initial oncogenic event and therefore may be involved in resistance processes.
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Affiliation(s)
- Florence Zylbersztejn
- Centre National de la Recherche Scientifique Unité Mixte de Recherche 5286, Centre de Recherche en Cancérologie de Lyon, 69000 Lyon, France; Inserm U1052, Centre de Recherche en Cancérologie de Lyon, 69000 Lyon, France; Université de Lyon, 69000, Lyon, France; Department of Signaling of Tumor Escape, Lyon, France
| | - Mario Flores-Violante
- Centre National de la Recherche Scientifique Unité Mixte de Recherche 5286, Centre de Recherche en Cancérologie de Lyon, 69000 Lyon, France; Inserm U1052, Centre de Recherche en Cancérologie de Lyon, 69000 Lyon, France; Université de Lyon, 69000, Lyon, France; Department of Signaling of Tumor Escape, Lyon, France
| | - Thibault Voeltzel
- Centre National de la Recherche Scientifique Unité Mixte de Recherche 5286, Centre de Recherche en Cancérologie de Lyon, 69000 Lyon, France; Inserm U1052, Centre de Recherche en Cancérologie de Lyon, 69000 Lyon, France; Université de Lyon, 69000, Lyon, France; Department of Signaling of Tumor Escape, Lyon, France
| | - Franck-Emmanuel Nicolini
- Centre National de la Recherche Scientifique Unité Mixte de Recherche 5286, Centre de Recherche en Cancérologie de Lyon, 69000 Lyon, France; Inserm U1052, Centre de Recherche en Cancérologie de Lyon, 69000 Lyon, France; Université de Lyon, 69000, Lyon, France; Department of Signaling of Tumor Escape, Lyon, France; Centre Léon Bérard, 69000 Lyon, France
| | - Sylvain Lefort
- Centre National de la Recherche Scientifique Unité Mixte de Recherche 5286, Centre de Recherche en Cancérologie de Lyon, 69000 Lyon, France; Inserm U1052, Centre de Recherche en Cancérologie de Lyon, 69000 Lyon, France; Université de Lyon, 69000, Lyon, France; Department of Signaling of Tumor Escape, Lyon, France
| | - Véronique Maguer-Satta
- Centre National de la Recherche Scientifique Unité Mixte de Recherche 5286, Centre de Recherche en Cancérologie de Lyon, 69000 Lyon, France; Inserm U1052, Centre de Recherche en Cancérologie de Lyon, 69000 Lyon, France; Université de Lyon, 69000, Lyon, France; Department of Signaling of Tumor Escape, Lyon, France.
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27
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Feng Y, Hu Y. Bone morphogenetic protein 9 serves a protective role in response to ischemic‑reperfusion in the brain by promoting ERK activation. Mol Med Rep 2017; 17:2845-2852. [PMID: 29257291 PMCID: PMC5783498 DOI: 10.3892/mmr.2017.8253] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2017] [Accepted: 09/11/2017] [Indexed: 02/06/2023] Open
Abstract
The aim of the present study was to investigate the expression and function mechanism of bone morphogenetic protein 9 (BMP9) in cerebral ischemia-reperfusion (I/R) injuries in vivo and in vitro. A total of 40 Sprague-Dawley rats were randomly divided into four groups (n=10): i) Normal control; ii) sham surgery group, the procedure without occlusion; iii) I/R group, right middle cerebral artery occlusion (MCAO) followed by reperfusion; and iv) adenoviral vector (Ad)-BMP9 + I/R group, Ad-BMP9 intracerebroventricular injection was performed 2 days prior to MCAO. Neurological deficit score and infarct volume were measured at 24 h following reperfusion. To further test the mechanism of BMP9, astrocytes were isolated and treated with Ad-BMP9, Ad-BMP9 + extracellular signal-regulated kinase (ERK) inhibitor PD098059, Ad-BMP9 + c-Jun N-terminal kinase inhibitor SP600125 and Ad-BMP9 + p38 inhibitor SB203580 for 24 h, followed by undergoing oxygen-glucose deprivation and reoxygenation (OGD/R) treatment. Cell viability and death were assessed by 3-(4,5-dimethylthiazol-2yl)-5-(3-carboxymethoxyphenyl)-(4-sulfophenyl)-2H-tetrazolium and lactate dehydrogenase release, respectively. Gene expression was determined by quantitative polymerase chain reaction and western blotting. BMP9 was identified to be upregulated at mRNA and protein levels in cerebral I/R animal and cell models. BMP9 pretreatment significantly reduced the neurological score and infarct volume compared with I/R rats. In astrocytes, overexpression of BMP9 significantly decreased cell death and improved cell viability, an effect which may be mediated by the ERK signaling pathway, as ERK was activated by BMP9 and the use of PD098059 partially reversed the protective effect of BMP9. Pretreatment with BMP-9 may be a promising treatment option for prevention of cerebral I/R injuries.
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Affiliation(s)
- Yinling Feng
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, P.R. China
| | - Yida Hu
- Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, P.R. China
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Li H, Zhao D, Wang S, Ding J, Zhao L. Bone morphogenetic protein‑9 promotes the differentiation of mouse spleen macrophages into osteoclasts via the ALK1 receptor and ERK 1/2 pathways in vitro. Mol Med Rep 2016; 14:4545-4550. [PMID: 27748860 PMCID: PMC5101994 DOI: 10.3892/mmr.2016.5803] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2015] [Accepted: 09/12/2016] [Indexed: 12/16/2022] Open
Abstract
It has been confirmed that bone morphogenetic protein-9 (BMP-9) promotes the differentiation of osteoblasts. However, the ways in which BMP-9 exerts its effects on the differentiation of osteoclasts and bone resorption remain to be elucidated. The present study was designed to investigate the roles and the molecular mechanism of BMP-9 on the proliferation and differentiation of osteoclast precursors in vitro. Mouse spleen macrophages (RAW 264.7 cells) were cultured in the presence of receptor activator for nuclear factor-κb ligand (RANKL) in vitro. Following treatment with different concentrations of BMP-9, a number of parameters were quantitatively monitored. Cell proliferation was determined using an MTT assay. The expression levels of cell BMP receptor-IA (BMPR-IA), BMPR-IB, BMPR-II and anaplastic lymphoma kinase 1 (ALK1) receptor were detected by ELISA, the small mothers against decapentaplegic pathway, extracellular signal-regulated kinase (ERK)1/2 pathways and markers of osteoclast differentiation were detected by western blotting. The results showed that treatment with BMP-9 alone promoted mouse spleen macrophage proliferation, and the differentiation into osteoclasts occurred only in the presence of RANK. The promoting effect of BMP-9 on cell proliferation and osteoclast differentiation occurred in dose-dependent manner. In addition, BMP-9 significantly upregulated the expression of the ALK1 receptor and inhibited the ERK1/2 pathway. The inhibition of the ERK1/2 pathways was ameliorated by transfection with small interfering (si)RNA ALK1. The effect of BMP-9 on osteoclast differentiation was reduced by transfection with siRNA ALK1, however, the effect was enhanced by the ERK1/2 pathway inhibitor, U0126. The results of the present study demonstrated that BMP-9 promoted the osteoclast differentiation of osteoclast precursors via binding to the ALK1 receptor on the cell surface, and inhibiting the ERK1/2 signaling pathways in the cell.
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Affiliation(s)
- Hai Li
- Department of Pediatric Orthopaedics, Xin‑Hua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200092, P.R. China
| | - Dahang Zhao
- Department of Pediatric Orthopaedics, Xin‑Hua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200092, P.R. China
| | - Shengjing Wang
- Department of Pediatric Orthopaedics, Xin‑Hua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200092, P.R. China
| | - Jing Ding
- Department of Pediatric Orthopaedics, Xin‑Hua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200092, P.R. China
| | - Li Zhao
- Department of Pediatric Orthopaedics, Xin‑Hua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200092, P.R. China
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29
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Lauzon MA, Drevelle O, Daviau A, Faucheux N. Effects of BMP-9 and BMP-2 on the PI3K/Akt Pathway in MC3T3-E1 Preosteoblasts. Tissue Eng Part A 2016; 22:1075-85. [PMID: 27477105 DOI: 10.1089/ten.tea.2016.0151] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
The bone morphogenetic proteins (BMPs), which are involved in bone formation and repair, play an important role in tissue engineering. For example, BMP-9 and BMP-2, which are members of different BMP subfamilies, are osteoinductive factors. However, several studies have recently shown that BMP-9 is more osteogenic than BMP-2. We have previously shown that fetal bovine serum (FBS) strongly enhances the osteoblast differentiation of murine preosteoblasts (MC3T3-E1) to BMP-9 but not to BMP-2. This effect is mimicked by IGF-2, which primarily activates the PI3K/Akt pathway, but how Akt phosphorylation sites are implicated in such differentiation is unclear. The effects of BMP-9 and BMP-2 with or without FBS or IGF-2 on Akt phosphorylation sites and subsequent osteoblastic differentiation were determined, respectively, by western blot analysis and alkaline phosphatase activity measurements. The involvement of phosphorylated Akt at Thr308 and/or Ser473 on BMP-mediated osteoblast differentiation was further studied using specific inhibitors. In MC3T3-E1 incubated with or without FBS, BMP-9 and BMP-2 activate Akt on Ser473 and Thr308 very differently in a time and dose-dependent manner. Using inhibitors specific to each Akt phosphorylation site, we showed that both Ser473 and Thr308 must be phosphorylated for BMP-9 and/or IGF-2-induced osteoblast differentiation, whereas BMP-2 requires phosphorylation of only Ser473. Furthermore, cells stimulated with BMP-2 in the presence of FBS require the phosphorylation of Akt at Ser473 and the dephosphorylation of Akt at Thr308 to increase the osteoblast differentiation with alkaline phosphatase activity similar to that of BMP-9 plus FBS. These results provide a better understanding into how BMP-9 induces osteoblast differentiation and its synergy with IGF-2 at the signaling level. This knowledge is essential for preparing the serum-free osteogenic media required for bone tissue engineering or developing growth factor delivery systems to improve bone formation.
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Affiliation(s)
- Marc-Antoine Lauzon
- 1 Department of Chemical and Biotechnological Engineering, Université de Sherbrooke , Sherbrooke, Canada
| | - Olivier Drevelle
- 1 Department of Chemical and Biotechnological Engineering, Université de Sherbrooke , Sherbrooke, Canada .,2 Department of Chemical Engineering, École Polytechnique de Montréal , Montréal, Canada
| | - Alex Daviau
- 1 Department of Chemical and Biotechnological Engineering, Université de Sherbrooke , Sherbrooke, Canada
| | - Nathalie Faucheux
- 1 Department of Chemical and Biotechnological Engineering, Université de Sherbrooke , Sherbrooke, Canada
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Detsch R, Rübner M, Strissel PL, Mohn D, Strasser E, Stark WJ, Strick R, Boccaccini AR. Nanoscale bioactive glass activates osteoclastic differentiation of RAW 264.7 cells. Nanomedicine (Lond) 2016; 11:1093-105. [PMID: 27092984 DOI: 10.2217/nnm.16.20] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND There is limited knowledge regarding differentiation of osteoclasts in the presence of nanoscale bioactive glass (nBG). This investigation examined increasing concentrations of 45S5 nBG and their influence on osteoclast differentiation. MATERIALS & METHODS Different concentrations of 45S5 nBG were cultured up to 14 days with the murine RAW264.7 cell line and human primary monocytes cultured with M-CSF and RANKL. RESULTS Culturing cells for 14 days with 500 μg/ml nBG showed a viability of 100%; however DNA synthesis was reduced, supporting differentiation into osteoclast-like cells. Using RAW cells, activation of nine genes, including cell fusion genes, occurred in an nBG concentration dependent manner. Low concentrations of nBG increased expression of genes involved in commitment to cell fusion, whereas high concentrations increased gene expression supporting osteoclast-like differentiation. CONCLUSION nBG enhances both RAW264.7 and human osteoclast differentiation. nBG controlled gene expression in a concentration dependent manner could reflect normal regulation during bone growth.
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Affiliation(s)
- Rainer Detsch
- Department of Materials Science & Engineering, Institute of Biomaterials, University of Erlangen-Nuremberg, Cauerstraße 6, 91058 Erlangen, Germany
| | - Matthias Rübner
- Department of Gynaecology & Obstetrics, Laboratory for Molecular Medicine, Friedrich-Alexander University Erlangen-Nürnberg (FAU), University-Clinic Erlangen, Universitätsstraße 21-23, 91054 Erlangen, Germany
| | - Pamela L Strissel
- Department of Gynaecology & Obstetrics, Laboratory for Molecular Medicine, Friedrich-Alexander University Erlangen-Nürnberg (FAU), University-Clinic Erlangen, Universitätsstraße 21-23, 91054 Erlangen, Germany
| | - Dirk Mohn
- Institute for Chemical & Bioengineering, ETH Zurich, Vladimir-Prelog-Weg 1, 8093 Zurich, Switzerland.,Clinic of Preventive Dentistry, Periodontology & Cariology, University of Zurich, Center of Dental Medicine, Plattenstraße 11, 8032 Zurich, Switzerland
| | - Erwin Strasser
- Department of Transfusion Medicine & Haemostaseology, University-Clinic Erlangen, Krankenhausstraße 12, 91054 Erlangen, Germany
| | - Wendelin J Stark
- Institute for Chemical & Bioengineering, ETH Zurich, Vladimir-Prelog-Weg 1, 8093 Zurich, Switzerland
| | - Reiner Strick
- Department of Gynaecology & Obstetrics, Laboratory for Molecular Medicine, Friedrich-Alexander University Erlangen-Nürnberg (FAU), University-Clinic Erlangen, Universitätsstraße 21-23, 91054 Erlangen, Germany
| | - Aldo R Boccaccini
- Department of Materials Science & Engineering, Institute of Biomaterials, University of Erlangen-Nuremberg, Cauerstraße 6, 91058 Erlangen, Germany
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31
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Tasca A, Stemig M, Broege A, Huang B, Davydova J, Zwijsen A, Umans L, Jensen ED, Gopalakrishnan R, Mansky KC. Smad1/5 and Smad4 expression are important for osteoclast differentiation. J Cell Biochem 2016; 116:1350-60. [PMID: 25711193 DOI: 10.1002/jcb.25092] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2014] [Accepted: 01/23/2015] [Indexed: 01/11/2023]
Abstract
To investigate the necessity of the canonical BMP pathway during osteoclast differentiation, we created osteoclasts with a conditional gene deletion for Smad1 and Smad5 (SMAD1/5), or Smad4 using adenovirus expressing CRE recombinase (Ad-CRE). Reduction of either Smad4 or Smad1/5 expression resulted in fewer and smaller multinuclear cells compared to control cells. We also detected changes in osteoclast enriched genes, demonstrated by decreased Dc-stamp and cathepsin K expression in both Smad4 and Smad1/5 Ad-CRE osteoclasts, and changes in c-fos and Nfatc1 expression in only Smad4 Ad-CRE cells. Lastly we also detected a significant decrease in resorption pits and area resorbed in both the Smad4 and Smad1/5 Ad-CRE osteoclasts. Because we inhibited osteoclast differentiation with loss of either Smad4 or Smad1/5 expression, we assessed whether BMPs affected osteoclast activity in addition to BMP's effects on differentiation. Therefore, we treated mature osteoclasts with BMP2 or with dorsomorphin, a chemical inhibitor that selectively suppresses canonical BMP signaling. We demonstrated that BMP2 stimulated resorption in mature osteoclasts whereas treatment with dorsomorphin blocks osteoclast resorption. These results indicate that the BMP canonical signaling pathway is important for osteoclast differentiation and activity.
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Affiliation(s)
- Amy Tasca
- Department of Diagnostic and Biological Sciences, University of Minnesota, Minneapolis, Minnesota, 55455
| | - Melissa Stemig
- Department of Diagnostic and Biological Sciences, University of Minnesota, Minneapolis, Minnesota, 55455
| | - Aaron Broege
- Department of Diagnostic and Biological Sciences, University of Minnesota, Minneapolis, Minnesota, 55455
| | - Brandon Huang
- Department of Developmental and Surgical Sciences, University of Minnesota, Minneapolis, Minnesota, 55455
| | - Julia Davydova
- Department of Surgery, University of Minnesota Medical School, Minneapolis, Minnesota, 55455
| | - An Zwijsen
- VIB Center for the Biology of Disease, VIB, KU Leuven Department of Human Genetics, Leuven, 3000, Belgium
| | - Lieve Umans
- Stem Cell Biology and Embryology, KU Leuven, Leuven, 3000, Belgium
| | - Eric D Jensen
- Department of Diagnostic and Biological Sciences, University of Minnesota, Minneapolis, Minnesota, 55455
| | - Raj Gopalakrishnan
- Department of Diagnostic and Biological Sciences, University of Minnesota, Minneapolis, Minnesota, 55455
| | - Kim C Mansky
- Department of Developmental and Surgical Sciences, University of Minnesota, Minneapolis, Minnesota, 55455
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Kim H, Pawlikowska L, Su H, Young WL. Genetics and Vascular Biology of Angiogenesis and Vascular Malformations. Stroke 2016. [DOI: 10.1016/b978-0-323-29544-4.00012-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Sánchez-Duffhues G, Hiepen C, Knaus P, Ten Dijke P. Bone morphogenetic protein signaling in bone homeostasis. Bone 2015; 80:43-59. [PMID: 26051467 DOI: 10.1016/j.bone.2015.05.025] [Citation(s) in RCA: 125] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/22/2014] [Revised: 04/11/2015] [Accepted: 05/20/2015] [Indexed: 01/06/2023]
Abstract
Bone morphogenetic proteins (BMPs) are cytokines belonging to the transforming growth factor-β (TGF-β) superfamily. They play multiple functions during development and tissue homeostasis, including regulation of the bone homeostasis. The BMP signaling pathway consists in a well-orchestrated manner of ligands, membrane receptors, co-receptors and intracellular mediators, that regulate the expression of genes controlling the normal functioning of the bone tissues. Interestingly, BMP signaling perturbation is associated to a variety of low and high bone mass diseases, including osteoporosis, bone fracture disorders and heterotopic ossification. Consistent with these findings, in vitro and in vivo studies have shown that BMPs have potent effects on the activity of cells regulating bone function, suggesting that manipulation of the BMP signaling pathway may be employed as a therapeutic approach to treat bone diseases. Here we review the recent advances on BMP signaling and bone homeostasis, and how this knowledge may be used towards improved diagnosis and development of novel treatment modalities. This article is part of a Special Issue entitled "Muscle Bone Interactions".
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Affiliation(s)
- Gonzalo Sánchez-Duffhues
- Department of Molecular Cell Biology and Cancer Genomics Centre Netherlands, Leiden University Medical Center, The Netherlands
| | - Christian Hiepen
- Institute for Chemistry and Biochemistry, Freie Universität Berlin, Berlin, Germany; Berlin Brandenburg School of Regenerative Therapies (BSRT), Charité Universitätsmedizin, Berlin, Germany
| | - Petra Knaus
- Institute for Chemistry and Biochemistry, Freie Universität Berlin, Berlin, Germany; Berlin Brandenburg School of Regenerative Therapies (BSRT), Charité Universitätsmedizin, Berlin, Germany.
| | - Peter Ten Dijke
- Department of Molecular Cell Biology and Cancer Genomics Centre Netherlands, Leiden University Medical Center, The Netherlands.
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34
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The role of the bone morphogenetic proteins in leukaemic stem cell persistence. Biochem Soc Trans 2015; 42:809-15. [PMID: 25109962 DOI: 10.1042/bst20140037] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
CML (chronic myeloid leukaemia) is characterized by the presence of the oncogenic tyrosine kinase fusion protein BCR (breakpoint cluster region)-Abl, responsible for driving the disease. Current TKI (tyrosine kinase inhibitor) therapies effectively inhibit BCR-Abl to control CML in the majority of patients, but do not eliminate the LSC (leukaemic stem cell) population, which becomes quiescent following treatment. Patients require long-term treatment to sustain remission; alternative strategies are therefore required, either alone or in combination with TKIs to eliminate the LSCs and provide a cure. The embryonic morphogenetic pathways play a key role in haemopoiesis with recent evidence suggesting LSCs are more dependent on these signals following chemotherapy than normal HSCs (haemopoietic stem cells). Recent evidence in the literature and from our group has revealed that the BMP (bone morphogenetic protein) pathway is differentially expressed in CML patients compared with normal donors. In the present review, we explore the role that BMP signalling plays in oesteoblast differentiation, HSC maintenance and the implication of altered BMP signalling on LSC persistence in the BM (bone marrow) niche. Overall, we highlight the BMP pathway as a potential target for developing LSC-directed therapies in CML in the future.
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35
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Potential roles of bone morphogenetic protein (BMP)-9 in human liver diseases. Int J Mol Sci 2014; 15:5199-220. [PMID: 24670474 PMCID: PMC4013558 DOI: 10.3390/ijms15045199] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2014] [Revised: 03/07/2014] [Accepted: 03/17/2014] [Indexed: 01/01/2023] Open
Abstract
Bone morphogenetic proteins (BMP-2 to BMP-15) belong to the Transforming Growth Factor (TGF)-β superfamily and, besides their well-documented roles during embryogenesis and bone formation, some of them have recently been described to be involved in the pathogenesis of different organs, including the liver. The role of BMPs in liver damage responses including hepatocellular carcinoma (HCC) development has only begun to be addressed and strong evidence supports the concept of a pro-tumorigenic role of BMP signaling in HCC cells. BMP-9 (also termed Growth and Differentiation Factor (GDF)-2) represents the most recently discovered member of the BMP family. We have previously demonstrated that in HCC patient samples BMP-9 expression was positively associated with the tumor seize (“T stage”) and that it enhanced cell migration and induced epithelial to mesenchymal transition (EMT) in HCC cells in vitro. In another study we recently found that BMP-9 promotes growth in HCC cells, but not in non-transformed hepatocytes. Published as well as unpublished results obtained with primary hepatocytes support the concept of a dual function of BMP-9 in the liver: while in primary, non-malignant cells BMP-9 stabilizes the epithelial phenotype and inhibits proliferation, in HCC cells it induces cell growth and the acquisition of a migratory phenotype. In this review article we summarize current knowledge about BMPs in liver diseases, with special focus on the role of BMP-9 in HCC development and progression, that may provide new clues for a better understanding of the contribution of BMP-signaling to chronic liver diseases.
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Olsen OE, Wader KF, Misund K, Våtsveen TK, Rø TB, Mylin AK, Turesson I, Størdal BF, Moen SH, Standal T, Waage A, Sundan A, Holien T. Bone morphogenetic protein-9 suppresses growth of myeloma cells by signaling through ALK2 but is inhibited by endoglin. Blood Cancer J 2014; 4:e196. [PMID: 24658374 PMCID: PMC3972702 DOI: 10.1038/bcj.2014.16] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2014] [Revised: 02/10/2014] [Accepted: 02/12/2014] [Indexed: 12/28/2022] Open
Abstract
Multiple myeloma is a malignancy of plasma cells predominantly located in the bone marrow. A number of bone morphogenetic proteins (BMPs) induce apoptosis in myeloma cells in vitro, and with this study we add BMP-9 to the list. BMP-9 has been found in human serum at concentrations that inhibit cancer cell growth in vitro. We here show that the level of BMP-9 in serum was elevated in myeloma patients (median 176 pg/ml, range 8–809) compared with healthy controls (median 110 pg/ml, range 8–359). BMP-9 was also present in the bone marrow and was able to induce apoptosis in 4 out of 11 primary myeloma cell samples by signaling through ALK2. BMP-9-induced apoptosis in myeloma cells was associated with c-MYC downregulation. The effects of BMP-9 were counteracted by membrane-bound (CD105) or soluble endoglin present in the bone marrow microenvironment, suggesting a mechanism for how myeloma cells can evade the tumor suppressing activity of BMP-9 in multiple myeloma.
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Affiliation(s)
- O E Olsen
- KG Jebsen Center for Myeloma Research, Norwegian University of Science and Technology, Trondheim, Norway
| | - K F Wader
- 1] KG Jebsen Center for Myeloma Research, Norwegian University of Science and Technology, Trondheim, Norway [2] Department of Oncology, St Olav's University Hospital, Trondheim, Norway
| | - K Misund
- KG Jebsen Center for Myeloma Research, Norwegian University of Science and Technology, Trondheim, Norway
| | - T K Våtsveen
- KG Jebsen Center for Myeloma Research, Norwegian University of Science and Technology, Trondheim, Norway
| | - T B Rø
- 1] KG Jebsen Center for Myeloma Research, Norwegian University of Science and Technology, Trondheim, Norway [2] Department of Pediatrics, St Olav's University Hospital, Trondheim, Norway
| | - A K Mylin
- Department of Haematology, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark
| | - I Turesson
- Department of Hematology and Coagulation Disorders, Skane University Hospital, Malmö, Sweden
| | - B F Størdal
- KG Jebsen Center for Myeloma Research, Norwegian University of Science and Technology, Trondheim, Norway
| | - S H Moen
- KG Jebsen Center for Myeloma Research, Norwegian University of Science and Technology, Trondheim, Norway
| | - T Standal
- 1] KG Jebsen Center for Myeloma Research, Norwegian University of Science and Technology, Trondheim, Norway [2] CEMIR (Centre of Molecular Inflammation Research), Department of Cancer Research and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
| | - A Waage
- 1] KG Jebsen Center for Myeloma Research, Norwegian University of Science and Technology, Trondheim, Norway [2] Department of Hematology, St Olav's University Hospital, Trondheim, Norway
| | - A Sundan
- 1] KG Jebsen Center for Myeloma Research, Norwegian University of Science and Technology, Trondheim, Norway [2] CEMIR (Centre of Molecular Inflammation Research), Department of Cancer Research and Molecular Medicine, Norwegian University of Science and Technology, Trondheim, Norway
| | - T Holien
- KG Jebsen Center for Myeloma Research, Norwegian University of Science and Technology, Trondheim, Norway
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Yue L, Haroun S, Parent JL, de Brum-Fernandes AJ. Prostaglandin D(2) induces apoptosis of human osteoclasts through ERK1/2 and Akt signaling pathways. Bone 2014; 60:112-21. [PMID: 24345643 DOI: 10.1016/j.bone.2013.12.011] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/11/2013] [Revised: 12/06/2013] [Accepted: 12/09/2013] [Indexed: 11/20/2022]
Abstract
In a recent study we have shown that prostaglandin D2 (PGD2) induces human osteoclast (OC) apoptosis through the activation of the chemoattractant receptor homologous molecule expressed on T-helper type 2 cell (CRTH2) receptor and the intrinsic apoptotic pathway. However, the molecular mechanisms underlying this response remain elusive. The objective of this study is to investigate the intracellular signaling pathways mediating PGD2-induced OC apoptosis. OCs were generated by in vitro differentiation of human peripheral blood mononuclear cells (PBMCs), and then treated with or without the selective inhibitors of mitogen-activated protein kinase-extracellular signal-regulated kinase (ERK) kinase, (MEK)-1/2, phosphatidylinositol3-kinase (PI3K) and NF-κB/IκB kinase-2 (IKK2) prior to the treatments of PGD2 as well as its agonists and antagonists. Fluorogenic substrate assay and immunoblotting were performed to determine the caspase-3 activity and key proteins involved in Akt, ERK1/2 and NF-κB signaling pathways. Treatments with both PGD2 and a CRTH2 agonist decreased ERK1/2 (Thr202/Tyr204) and Akt (Ser473) phosphorylation, whereas both treatments increased β-arrestin-1 phosphorylation (Ser412) in the presence of naproxen, which was used to eliminate endogenous prostaglandin production. In the absence of naproxen, treatment with a CRTH2 antagonist increased both ERK1/2 and Akt phosphorylations, and reduced the phosphorylation of β-arrestin-1. Treatment of OCs with a selective MEK-1/2 inhibitor increased caspase-3 activity and OC apoptosis induced by both PGD2 and a CRTH2 agonist. Moreover, a CRTH2 antagonist diminished the selective MEK-1/2 inhibitor-induced increase in caspase-3 activity in the presence of endogenous prostaglandins. In addition, treatment of OCs with a selective PI3K inhibitor decreased ERK1/2 (Thr202/Tyr204) phosphorylation caused by PGD2, whereas increased ERK1/2 (Thr202/Tyr204) phosphorylation by a CRTH2 antagonist was attenuated with a PI3K inhibitor treatment. The DP receptor was not implicated in any of the parameters evaluated. Treatment of OCs with PGD2 as well as its receptor agonists and antagonists did not alter the phosphorylation of RelA/p65 (Ser536). Moreover, the caspase-3 activity was not altered in OCs treated with a selective IKK2/NF-κB inhibitor. In conclusion, endogenous or exogenous PGD2 induces CRTH2-dependent apoptosis in human differentiated OCs; β-arrestin-1, ERK1/2, and Akt, but not IKK2/NF-κB are probably implicated in the signaling pathways of this receptor in the model studied.
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Affiliation(s)
- Li Yue
- Department of Pharmacology, Faculté de médecine et des sciences de la santé, Université de Sherbrooke, 3001 12e Avenue Nord, Sherbrooke, Quebec J1H 5N4, Canada; Division of Rheumatology, Faculté de médecine et des sciences de la santé, Université de Sherbrooke, 3001 12e Avenue Nord, Sherbrooke, Quebec J1H 5N4, Canada.
| | - Sonia Haroun
- Division of Rheumatology, Faculté de médecine et des sciences de la santé, Université de Sherbrooke, 3001 12e Avenue Nord, Sherbrooke, Quebec J1H 5N4, Canada.
| | - Jean-Luc Parent
- Department of Pharmacology, Faculté de médecine et des sciences de la santé, Université de Sherbrooke, 3001 12e Avenue Nord, Sherbrooke, Quebec J1H 5N4, Canada; Division of Rheumatology, Faculté de médecine et des sciences de la santé, Université de Sherbrooke, 3001 12e Avenue Nord, Sherbrooke, Quebec J1H 5N4, Canada.
| | - Artur J de Brum-Fernandes
- Department of Pharmacology, Faculté de médecine et des sciences de la santé, Université de Sherbrooke, 3001 12e Avenue Nord, Sherbrooke, Quebec J1H 5N4, Canada; Division of Rheumatology, Faculté de médecine et des sciences de la santé, Université de Sherbrooke, 3001 12e Avenue Nord, Sherbrooke, Quebec J1H 5N4, Canada.
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Lee JH, Ryu MY, Baek HR, Lee HK, Seo JH, Lee KM, Lee AY, Zheng GB, Chang BS, Lee CK. The Effects of Recombinant Human Bone Morphogenetic Protein-2-Loaded Tricalcium Phosphate Microsphere-Hydrogel Composite on the Osseointegration of Dental Implants in Minipigs. Artif Organs 2014; 38:149-58. [DOI: 10.1111/aor.12275] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Jae Hyup Lee
- Department of Orthopedic Surgery; College of Medicine; SMG-SNU Boramae Medical Center; Seoul National University; Seoul Korea
- Institute of Medical and Biological Engineering; Seoul National University Medical Research Center; Seoul Korea
| | | | - Hae-Ri Baek
- Institute of Medical and Biological Engineering; Seoul National University Medical Research Center; Seoul Korea
| | - Hyun-Kyung Lee
- Department of Orthopedic Surgery; College of Medicine; SMG-SNU Boramae Medical Center; Seoul National University; Seoul Korea
- Institute of Medical and Biological Engineering; Seoul National University Medical Research Center; Seoul Korea
| | | | - Kyung Mee Lee
- Department of Orthopedic Surgery; College of Medicine; SMG-SNU Boramae Medical Center; Seoul National University; Seoul Korea
| | | | - Guang Bin Zheng
- Department of Orthopedic Surgery; College of Medicine; SMG-SNU Boramae Medical Center; Seoul National University; Seoul Korea
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Detsch R, Boccaccini AR. The role of osteoclasts in bone tissue engineering. J Tissue Eng Regen Med 2014; 9:1133-49. [PMID: 24478169 DOI: 10.1002/term.1851] [Citation(s) in RCA: 85] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2013] [Revised: 09/18/2013] [Accepted: 10/20/2013] [Indexed: 12/13/2022]
Abstract
The success of scaffold-based bone regeneration approaches strongly depends on the performance of the biomaterial utilized. Within the efforts of regenerative medicine towards a restitutio ad integrum (i.e. complete reconstruction of a diseased tissue), scaffolds should be completely degraded within an adequate period of time. The degradation of synthetic bone substitute materials involves both chemical dissolution (physicochemical degradation) and resorption (cellular degradation by osteoclasts). Responsible for bone resorption are osteoclasts, cells of haematopoietic origin. Osteoclasts play also a crucial role in bone remodelling, which is essential for the regeneration of bone defects. There is, however, surprisingly limited knowledge about the detailed effects of osteoclasts on biomaterials degradation behaviour. This review covers the relevant fundamental knowledge and progress made in the field of osteoclast activity related to biomaterials used for bone regeneration. In vitro studies with osteoclastic precursor cells on synthetic bone substitute materials show that there are specific parameters that inhibit or enhance resorption. Moreover, analyses of the bone-material interface reveal that biomaterials composition has a significant influence on their degradation in contact with osteoclasts. Crystallinity, grain size, surface bioactivity and density of the surface seem to have a less significant effect on osteoclastic activity. In addition, the topography of the scaffold surface can be tailored to affect the development and spreading of osteoclast cells. The present review also highlights possible areas on which future research is needed and which are relevant to enhance our understanding of the complex role of osteoclasts in bone tissue engineering.
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Affiliation(s)
- Rainer Detsch
- Institute of Biomaterials, University of Erlangen-Nuremberg, Germany
| | - Aldo R Boccaccini
- Institute of Biomaterials, University of Erlangen-Nuremberg, Germany
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Gunaratnam K, Vidal C, Boadle R, Thekkedam C, Duque G. Mechanisms of palmitate-induced cell death in human osteoblasts. Biol Open 2013; 2:1382-9. [PMID: 24285710 PMCID: PMC3863423 DOI: 10.1242/bio.20136700] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Lipotoxicity is an overload of lipids in non-adipose tissues that affects function and induces cell death. Lipotoxicity has been demonstrated in bone cells in vitro using osteoblasts and adipocytes in coculture. In this condition, lipotoxicity was induced by high levels of saturated fatty acids (mostly palmitate) secreted by cultured adipocytes acting in a paracrine manner. In the present study, we aimed to identify the underlying mechanisms of lipotoxicity in human osteoblasts. Palmitate induced autophagy in cultured osteoblasts, which was preceded by the activation of autophagosomes that surround palmitate droplets. Palmitate also induced apoptosis though the activation of the Fas/Jun kinase (JNK) apoptotic pathway. In addition, osteoblasts could be protected from lipotoxicity by inhibiting autophagy with the phosphoinositide kinase inhibitor 3-methyladenine or by inhibiting apoptosis with the JNK inhibitor SP600125. In summary, we have identified two major molecular mechanisms of lipotoxicity in osteoblasts and in doing so we have identified a new potential therapeutic approach to prevent osteoblast dysfunction and death, which are common features of age-related bone loss and osteoporosis.
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Affiliation(s)
- Krishanthi Gunaratnam
- Ageing Bone Research Program, Sydney Medical School Nepean, The University of Sydney, Penrith, NSW 2750, Australia
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Broege A, Pham L, Jensen ED, Emery A, Huang TH, Stemig M, Beppu H, Petryk A, O'Connor M, Mansky K, Gopalakrishnan R. Bone morphogenetic proteins signal via SMAD and mitogen-activated protein (MAP) kinase pathways at distinct times during osteoclastogenesis. J Biol Chem 2013; 288:37230-40. [PMID: 24235143 DOI: 10.1074/jbc.m113.496950] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
To investigate the role of bone morphogenetic protein (BMP) signaling in osteoclastogenesis in vivo, we eliminated BMPRII in osteoclasts by creating a BMPRII(fl/fl);lysM-Cre mouse strain. Conditional knock-out (cKO) mice are osteopetrotic when compared with WT controls due to a decrease in osteoclast activity. Bone marrow macrophages (BMMs) isolated from cKO mice are severely inhibited in their capacity to differentiate into mature osteoclasts in the presence of M-CSF and receptor activator of NF-κB (RANK) ligand. We also show that BMP noncanonical (MAPK) and canonical (SMAD) pathways are utilized at different stages of osteoclast differentiation. BMP2 induces p38 phosphorylation in pre-fusion osteoclasts and increases SMAD phosphorylation around osteoclast precursor fusion. Phosphorylation of MAPKs was decreased in differentiated BMMs from cKO animals. Treating BMMs with the SMAD inhibitor dorsomorphin confirms the requirement for the canonical pathway around the time of fusion. These results demonstrate the requirement for BMP signaling in osteoclasts for proper bone homeostasis and also explore the complex signaling mechanisms employed by BMP signaling during osteoclast differentiation.
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Affiliation(s)
- Aaron Broege
- From the Departments of Diagnostic and Biological Sciences
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Hawinkels LJ, Garcia de Vinuesa A, Ten Dijke P. Activin receptor-like kinase 1 as a target for anti-angiogenesis therapy. Expert Opin Investig Drugs 2013; 22:1371-83. [PMID: 24053899 DOI: 10.1517/13543784.2013.837884] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
INTRODUCTION Formation of blood vessels from pre-existing ones, also termed angiogenesis, is of crucial importance for the outgrowth of tumours beyond 1 - 2 mm³. Therefore, anti-angiogenic therapies, mainly focussing on inhibition of vascular endothelial growth factor (VEGF) are used in clinical therapy. However, although initially reducing tumour size, therapy resistance occurs frequently and new targets are needed. A possible target is activin receptor-like kinase (ALK)-1, a transforming growth factor (TGF)-β type-I receptor, which binds bone morphogenetic protein (BMP)-9 and -10 with high affinity and has an important role in regulating angiogenesis. AREAS COVERED Several approaches to interfere with ALK1 signalling have been developed, that is, ALK1 neutralising antibodies and a soluble ALK1 extracellular domain/Fc fusion protein (ALK1-Fc), acting as a ligand trap. In this review, we discuss the involvement of ALK1 in angiogenesis, in a variety of diseases and the current status of the development of ALK1 inhibitors for cancer therapy. EXPERT OPINION Based on current, mainly preclinical studies on inhibition of ALK1 signalling by ligand traps and neutralising antibodies, targeting ALK1 seems very promising. Both ALK1-Fc and neutralising antibodies strongly inhibit angiogenesis in vitro and in vivo. The results from the first Phase I clinical trials are to be reported soon and multiple Phase II studies are ongoing.
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Affiliation(s)
- Lukas Jac Hawinkels
- Leiden University Medical Centre, Cancer Genomics Centre Netherlands and Centre for BioMedical Genetics, Department of Molecular Cell Biology , Building-2, S1-P, PO box 9600, 2300 RC Leiden , The Netherlands +31 71 526 9272 ; +31 71 526 8270 ;
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Leblanc E, Drouin G, Grenier G, Faucheux N, Hamdy R. From skeletal to non skeletal: The intriguing roles of BMP-9: A literature review. ACTA ACUST UNITED AC 2013. [DOI: 10.4236/abb.2013.410a4004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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