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Shao C, Liu Y, Zhao Y, Jing Y, Li J, Lv Z, Fu T, Wang Z, Li G. DNA methyltransferases inhibitor azacitidine improves the skeletal phenotype of mild osteogenesis imperfecta by reversing the impaired osteogenesis and excessive osteoclastogenesis. Bone 2023; 170:116706. [PMID: 36822490 DOI: 10.1016/j.bone.2023.116706] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Revised: 02/06/2023] [Accepted: 02/12/2023] [Indexed: 02/24/2023]
Abstract
BACKGROUND Osteogenesis imperfecta (OI), as a disease of congenital bone dysplasia, is often accompanied by the abnormal alteration of bone absorption and bone formation. DNA methyltransferases (Dnmts) can regulate the gene expression involved in osteogenesis and osteoclastogenesis. Dnmts changes and their effects on bone cells under OI is poorly understood. METHODS The Dnmts expression in adipose derived mesenchymal stem cells (ADSCs), bone marrow derived pre-osteoclasts (pre-Ocs) and femurs of Col1a2oim/+ and Col1a1+/-365 mice, both modeling mild OI types, were determined. The effects of azacitidine (Aza) administration and Dnmt3a knockdown by ShRNA on the osteogenic differentiation of ADSCs together with osteoclasts (Ocs) production of pre-Ocs were studied in vitro. The synthesis and secretion of collagen fibers of OI derived ADSCs were examined. The therapeutic outcomes of intraperitoneal (i.p.) infused Aza (1 mg/kg/2d) for 30 days were evaluated in OI mice. RESULTS Obviously elevated expression of Dnmts, especially Dnmt3a, existed in ADSCs, pre-Ocs, and femurs isolated from OI modeled mice. Much more collagen molecules of mutant ADSCs were secreted into the extracellular medium post Aza addition. Both Aza administration and Dnmt3a knockdown effectively enhanced the bone-forming capacity of affected ADSCs and reduced Ocs formation of OI mice in vitro. Aza treatment apparently improved the femora microstructure and biomechanical properties, increased bone formation and decreased the number of Ocs in mice with OI. CONCLUSION Highly expressed Dnmt3a contributed to the impaired osteogenesis and enhanced osteoclastogenesis of collagen defect-related OI. Aza medication effectively improved the femora phenotype of the two types of OI modeled mice partly by Dnmts inhibition and modulating cell stress response. These findings facilitated understanding the role of Dnmts alteration in skeletal pathological development of mild OI and preliminary confirmed the therapeutic potential of Dnmts depressants in mild OI treatment. Still, further researches are needed to explore the specific function of Dnmts in OI bones and clarify the benefits of Aza administration in OI treatment.
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Affiliation(s)
- Chenyi Shao
- Department of Genetics, School of Basic Medical Sciences, Tianjin Medical University, Tianjin, People's Republic of China
| | - Yi Liu
- Department of Genetics, School of Basic Medical Sciences, Tianjin Medical University, Tianjin, People's Republic of China
| | - Yuxia Zhao
- Department of Genetics, School of Basic Medical Sciences, Tianjin Medical University, Tianjin, People's Republic of China
| | - Yaqing Jing
- Department of Genetics, School of Basic Medical Sciences, Tianjin Medical University, Tianjin, People's Republic of China
| | - Jiaci Li
- Department of Genetics, School of Basic Medical Sciences, Tianjin Medical University, Tianjin, People's Republic of China
| | - Zhe Lv
- Department of Genetics, School of Basic Medical Sciences, Tianjin Medical University, Tianjin, People's Republic of China
| | - Ting Fu
- Department of Genetics, School of Basic Medical Sciences, Tianjin Medical University, Tianjin, People's Republic of China
| | - Zihan Wang
- Department of Genetics, School of Basic Medical Sciences, Tianjin Medical University, Tianjin, People's Republic of China
| | - Guang Li
- Department of Genetics, School of Basic Medical Sciences, Tianjin Medical University, Tianjin, People's Republic of China.
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Targeting Agents in Biomaterial-Mediated Bone Regeneration. Int J Mol Sci 2023; 24:ijms24032007. [PMID: 36768328 PMCID: PMC9916506 DOI: 10.3390/ijms24032007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Revised: 01/13/2023] [Accepted: 01/17/2023] [Indexed: 01/21/2023] Open
Abstract
Bone diseases are a global public concern that affect millions of people. Even though current treatments present high efficacy, they also show several side effects. In this sense, the development of biocompatible nanoparticles and macroscopic scaffolds has been shown to improve bone regeneration while diminishing side effects. In this review, we present a new trend in these materials, reporting several examples of materials that specifically recognize several agents of the bone microenvironment. Briefly, we provide a subtle introduction to the bone microenvironment. Then, the different targeting agents are exposed. Afterward, several examples of nanoparticles and scaffolds modified with these agents are shown. Finally, we provide some future perspectives and conclusions. Overall, this topic presents high potential to create promising translational strategies for the treatment of bone-related diseases. We expect this review to provide a comprehensive description of the incipient state-of-the-art of bone-targeting agents in bone regeneration.
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Ekambaram R, Dharmalingam S. Design and development of biomimetic electrospun sulphonated polyether ether ketone nanofibrous scaffold for bone tissue regeneration applications: in vitro and in vivo study. JOURNAL OF BIOMATERIALS SCIENCE. POLYMER EDITION 2022; 33:947-975. [PMID: 34985405 DOI: 10.1080/09205063.2022.2025637] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Revised: 12/30/2021] [Accepted: 01/02/2022] [Indexed: 06/14/2023]
Abstract
Bone defect restoration remains challenging in orthopedic medical practices. In this study an attempt is carried out to probe the use of new biomimetic SPEEK (sulfonated polyether ether ketone) based nanofibrous scaffold to deliver amine functionalized hydroxyapatite nanoparticles loaded resveratrol for its potent functionality in osteogenic differentiation. SPEEK polymer with reactive functional group SO3H was synthesized through process of sulphonation reaction. Amine functionalized nanoparticles with protonated amino groups revamp the molecular interaction by the formation of hydrogen bonds that in turn intensify the bioactivity of the nanofibrous scaffold. Osteoconductive functionalized nanohydroxyapatite enhances the cell proliferation and osteogenicity with improved cell attachment and spreading. The results of FT-IR, XRD, Carbon-Silica NMR and EDX analysis confirmed the amine functionalization of the hydroxyapatite nanoparticles. Surface morphological analysis of the fabricated nanofibers through SEM and AFM analysis shows vastly interconnected porous structure that mimics the bone extracellular matrix, which enhances the cell compatibility. Cell adhesion and live dead assay of the nanoscaffolds express less cytotoxicity. Mineralization and alkaline phosphatase assay establish the osteogenic differentiation of the nanofibrous scaffold. The in vitro biocompatibility studies reveal that the fabricated scaffold was osteo-compatible with MG63 cell lines. Hemocompatibility study further proved that the designed biomimetic nanofibrous scaffold was highly suitable for bone tissue engineering. The results of in vivo analysis in zebrafish model for the fabricated nanofibers demonstrated significant increase in the caudal fin regeneration indicating mineralization of osteoblast. Thus, the commending results obtained instigate the potentiality of the composite nanofibrous scaffold as an effective biomimetic substrate for bone tissue regeneration.
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Liu Y, Cheng W, Zhao Y, Gao L, Chang Y, Tong Z, Li H, Jing J. Cyclic Mechanical Strain Regulates Osteoblastic Differentiation of Mesenchymal Stem Cells on TiO 2 Nanotubes Through GCN5 and Wnt/β-Catenin. Front Bioeng Biotechnol 2021; 9:735949. [PMID: 34869255 PMCID: PMC8634263 DOI: 10.3389/fbioe.2021.735949] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2021] [Accepted: 09/30/2021] [Indexed: 02/03/2023] Open
Abstract
Bone marrow mesenchymal stem cells (BMSCs) play a critical role in bone formation and are extremely sensitive to external mechanical stimuli. Mechanical signals can regulate the biological behavior of cells on the surface of titanium-related prostheses and inducing osteogenic differentiation of BMSCs, which provides the integration of host bone and prosthesis benefits. But the mechanism is still unclear. In this study, BMSCs planted on the surface of TiO2 nanotubes were subjected to cyclic mechanical stress, and the related mechanisms were explored. The results of alkaline phosphatase staining, real-time PCR, and Western blot showed that cyclic mechanical stress can regulate the expression level of osteogenic differentiation markers in BMSCs on the surface of TiO2 nanotubes through Wnt/β-catenin. As an important member of the histone acetyltransferase family, GCN5 exerted regulatory effects on receiving mechanical signals. The results of the ChIP assay indicated that GCN5 could activate the Wnt promoter region. Hence, we concluded that the osteogenic differentiation ability of BMSCs on the surface of TiO2 nanotubes was enhanced under the stimulation of cyclic mechanical stress, and GCN5 mediated this process through Wnt/β-catenin.
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Affiliation(s)
- Yanchang Liu
- Department of Orthopaedics, The Second Hospital of Anhui Medical University, Hefei, China
| | - Wendan Cheng
- Department of Orthopaedics, The Second Hospital of Anhui Medical University, Hefei, China
| | - Yao Zhao
- Department of Orthopaedics, The Second Hospital of Anhui Medical University, Hefei, China
| | - Liang Gao
- Sino Euro Orthopaedics Network, Berlin, Germany
| | - Yongyun Chang
- Shanghai Key Laboratory of Orthopaedic Implants, Department of Orthopaedics, Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Zhicheng Tong
- Shanghai Key Laboratory of Orthopaedic Implants, Department of Orthopaedics, Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Huiwu Li
- Shanghai Key Laboratory of Orthopaedic Implants, Department of Orthopaedics, Shanghai Ninth People's Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Juehua Jing
- Department of Orthopaedics, The Second Hospital of Anhui Medical University, Hefei, China
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Adipocyte-induced transdifferentiation of osteoblasts and its potential role in age-related bone loss. PLoS One 2021; 16:e0245014. [PMID: 33497412 PMCID: PMC7837466 DOI: 10.1371/journal.pone.0245014] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Accepted: 12/18/2020] [Indexed: 12/23/2022] Open
Abstract
Our preliminary findings have lead us to propose bone marrow adipocyte secretions as new contributors to bone loss. Indeed, using a coculture model based on human bone marrow stromal cells, we previously showed that soluble factors secreted by adipocytes induced the conversion of osteoblasts towards an adipocyte-like phenotype. In this study, microarray gene expression profiling showed profound transcriptomic changes in osteoblasts following coculture and confirmed the enrichment of the adipocyte gene signature. Double immunofluorescence microscopic analyses demonstrated the coexpression of adipogenic and osteoblastic specific markers in individual cells, providing evidence for a transdifferentiation event. At the molecular level, this conversion was associated with upregulated expression levels of reprogramming genes and a decrease in the DNA methylation level. In line with these in vitro results, preliminary immunohistochemical analysis of bone sections revealed adipogenic marker expression in osteoblasts from elderly subjects. Altogether, these data suggest that osteoblast transdifferentiation could contribute to decreased bone mass upon ageing.
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Chen R, Qiu H, Tong Y, Liao F, Hu X, Qiu Y, Liao Y. MiRNA-19a-3p alleviates the progression of osteoporosis by targeting HDAC4 to promote the osteogenic differentiation of hMSCs. Biochem Biophys Res Commun 2019; 516:666-672. [PMID: 31248594 DOI: 10.1016/j.bbrc.2019.06.083] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2019] [Accepted: 06/16/2019] [Indexed: 01/08/2023]
Abstract
To clarify the function of microRNA-19a-3p (miRNA-19a-3p) in the osteogenic differentiation of human-derived mesenchymal stem cells (hMSCs) and the potential mechanism. Serum levels of miRNA-19a-3p, RUNX2 and OCN in osteoporosis patients and controls were determined by quantitative real-time polymerase chain reaction (qRT-PCR). Alkaline phosphatase (ALP) content and calcification ability during the process of osteogenic differentiation were examined by ALP staining and alizarin red staining, respectively. After altering miRNA-19a-3p level by transfection of miRNA-19a-3p mimic or inhibitor, we detected relative levels of miRNA-19a-3p, RUNX2 and OCN in hMSCs by qRT-PCR. The binding relationship between miRNA-19a-3p and HDAC4 was predicted by TargetScan and further verified by dual-luciferase reporter gene assay. Relative expression of HDAC4 was detected by Western blot and qRT-PCR in hMSCs transfected with miRNA-19a-3p mimic or inhibitor. Regulatory effects of miRNA-19a-3p/HDAC4 axis on osteogenic differentiation of hMSCs were evaluated. MiRNA-19a-3p was downregulated in osteoporosis patients. Its level gradually increased in hMSCs with the prolongation of osteogenic differentiation. Overexpression of miRNA-19a-3p upregulated levels of RUNX2 and OCN, and enhanced ALP activity. Knockdown of miRNA-19a-3p obtained the opposite trends. Dual-luciferase reporter gene assay verified that miRNA-19a-3p could target to 3'UTR of HDAC4. Protein level of HDAC4 was negatively regulated by miRNA-19a-3p in hMSCs. More importantly, co-overexpression of miRNA-19a-3p and HDAC4 could reverse the regulatory effects of miRNA-19a-3p on enhancing ALP activity and upregulating RUNX2 and OCN. MiRNA-19a-3p promotes the osteogenic differentiation of hMSCs by inhibiting HDAC4 expression, thus alleviating the progression of osteoporosis.
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Affiliation(s)
- Rijiang Chen
- Department of Orthopaedics, Longyan First Hospital Affiliated to Fujian Medical University, Longyan, China
| | - Hanmin Qiu
- Department of Orthopaedics, Longyan First Hospital Affiliated to Fujian Medical University, Longyan, China
| | - Yan Tong
- Department of Endocrine, Longyan First Hospital Affiliated to Fujian Medical University, Longyan, China
| | - Fake Liao
- Department of Orthopaedics, Longyan First Hospital Affiliated to Fujian Medical University, Longyan, China
| | - Xiunian Hu
- Department of Orthopaedics, Longyan First Hospital Affiliated to Fujian Medical University, Longyan, China
| | - Yongrong Qiu
- Department of Orthopaedics, Longyan First Hospital Affiliated to Fujian Medical University, Longyan, China
| | - Yuanjun Liao
- Department of Orthopaedics, Longyan First Hospital Affiliated to Fujian Medical University, Longyan, China.
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Lawlor L, Yang XB. Harnessing the HDAC-histone deacetylase enzymes, inhibitors and how these can be utilised in tissue engineering. Int J Oral Sci 2019; 11:20. [PMID: 31201303 PMCID: PMC6572769 DOI: 10.1038/s41368-019-0053-2] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2018] [Revised: 05/02/2019] [Accepted: 05/05/2019] [Indexed: 02/07/2023] Open
Abstract
There are large knowledge gaps regarding how to control stem cells growth and differentiation. The limitations of currently available technologies, such as growth factors and/or gene therapies has led to the search of alternatives. We explore here how a cell's epigenome influences determination of cell type, and potential applications in tissue engineering. A prevalent epigenetic modification is the acetylation of DNA core histone proteins. Acetylation levels heavily influence gene transcription. Histone deacetylase (HDAC) enzymes can remove these acetyl groups, leading to the formation of a condensed and more transcriptionally silenced chromatin. Histone deacetylase inhibitors (HDACis) can inhibit these enzymes, resulting in the increased acetylation of histones, thereby affecting gene expression. There is strong evidence to suggest that HDACis can be utilised in stem cell therapies and tissue engineering, potentially providing novel tools to control stem cell fate. This review introduces the structure/function of HDAC enzymes and their links to different tissue types (specifically bone, cardiac, neural tissues), including the history, current status and future perspectives of using HDACis for stem cell research and tissue engineering, with particular attention paid to how different HDAC isoforms may be integral to this field.
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Affiliation(s)
- Liam Lawlor
- Department of Oral Biology, University of Leeds, Wellcome Trust Brenner Building, St. James's University Hospital, Leeds, LS9 7TF, UK
- Doctoral Training Centre in Tissue Engineering and Regenerative Medicine, Institute of Medical and Biological Engineering, School of Mechanical Engineering, University of Leeds, Leeds, UK
| | - Xuebin B Yang
- Department of Oral Biology, University of Leeds, Wellcome Trust Brenner Building, St. James's University Hospital, Leeds, LS9 7TF, UK.
- Doctoral Training Centre in Tissue Engineering and Regenerative Medicine, Institute of Medical and Biological Engineering, School of Mechanical Engineering, University of Leeds, Leeds, UK.
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Soares IMV, Fernandes GVDO, Larissa Cordeiro C, Leite YKPDC, Bezerra DDO, Carvalho MAMD, Carvalho CMRS. The influence of Aloe vera with mesenchymal stem cells from dental pulp on bone regeneration: characterization and treatment of non-critical defects of the tibia in rats. J Appl Oral Sci 2019; 27:e20180103. [PMID: 30994771 PMCID: PMC6459225 DOI: 10.1590/1678-7757-2018-0103] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2018] [Accepted: 07/29/2018] [Indexed: 12/15/2022] Open
Abstract
OBJECTIVE This study aimed to evaluate the inflammatory effect and bone formation in sterile surgical failures after implantation of a collagen sponge with mesenchymal stem cells from human dental pulp (hDPSCs) and Aloe vera. MATERIAL AND METHODS Rattus norvegicus (n=75) were divided into five experimental groups according to treatment: G1) control (blood clot); G2) Hemospon®; G3) Hemospon® in a culture medium enriched with 8% Aloe vera; G4) Hemospon® in a culture medium containing hDPSCs and G5) Hemospon® in a culture medium enriched with 8% Aloe vera and hDPSCs. On days 7, 15 and 30, the animals were euthanized, and the tibia was dissected for histological, immunohistochemistry and immunofluorescence analyses. The results were analyzed using nonparametric Kruskal-Wallis test and Dunn's post-test. RESULTS On days 7 and 15, the groups with Aloe vera had less average acute inflammatory infiltrate compared to the control group and the group with Hemospon® (p<0.05). No statistically significant difference was found between the groups regarding bone formation at the three experimental points in time. Osteopontin expression corroborated the intensity of bone formation. Fluorescence microscopy revealed positive labeling with Q-Tracker® in hDPSCs before transplantation and tissue repair. CONCLUSION The results suggest that the combination of Hemospon®, Aloe vera and hDPSCs is a form of clinical treatment for the repair of non-critical bone defects that reduces the inflammatory cascade's effects.
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Yang Y, Wang X, Miron RJ, Zhang X. The interactions of dendritic cells with osteoblasts on titanium surfaces: an in vitro investigation. Clin Oral Investig 2019; 23:4133-4143. [PMID: 30850859 DOI: 10.1007/s00784-019-02852-w] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Accepted: 02/13/2019] [Indexed: 12/20/2022]
Abstract
OBJECTIVES Osteoimmune interactions possess a critical part in the integration of materials and hosts. Dendritic cells (DCs) are the most common members of osteoimmune cells family. The titanium surfaces of dental implants tend to promote a mature dendritic cell phenotype with increased proinflammatory secretion. However, very little is known to the effects of this microenvironment on the behaviors of cells around implants, especially osteoblasts, and how the tissue integrations take place on such biomaterial surfaces. Therefore, the present study was to investigate the interactions of DCs with osteoblasts on titanium surfaces. DCs seeded on PT and SLA titanium surfaces were compared by assays for the proliferations, surface markers, and inflammatory genes expressions. MATERIALS AND METHODS DCs seeded on PT and SLA titanium surfaces were compared by assays for the proliferations, surface markers, and inflammatory genes expressions. Next, we harvested the dendritic cell-conditioned medium (CM) and investigated the effects of CM on MC3T3-E1. RESULTS The results showed an increase in CD86 and proinflammatory expressions of DCs seeded on PT and SLA surfaces, as well as a decrease in anti-inflammatory cytokines. The CM from titanium surfaces inhibited the osteoblast differentiation with reduced expression of osteogenic genes RUNX2, COL1, ALP, and OCN and decreased ALP activity as well as Alizarin red staining. CONCLUSION These findings suggested that titanium surfaces switch DCs toward maturation phenotypes and thus inhibit the differentiation and mineralization of osteoblasts. CLINICAL RELEVANCE Knowing the significant impact of immune cells on osteogenesis behaviors, some efforts to decrease the immune reaction might be of clinical significance. Favorable immune environments can increase the dental implants survival rate in patients.
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Affiliation(s)
- Yang Yang
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, China.,Department of Oral Implantology, Guangdong Provincial Key Laboratory of Stomatology, Guanghua School of Stomatology, Sun Yat-Sen University, 510055, Guangzhou, People's Republic of China
| | - Xuzhu Wang
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, China
| | - Richard J Miron
- Department of Periodontology, College of Dental Medicine, Nova Southeastern University, Fort Lauderdale, FL, 33328, USA
| | - Xiaoxin Zhang
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, China.
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10
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Xu SS, Xu LG, Yuan C, Li SN, Chen T, Wang W, Li C, Cao L, Rao H. FKBP8 inhibits virus-induced RLR-VISA signaling. J Med Virol 2019; 91:482-492. [PMID: 30267576 DOI: 10.1002/jmv.25327] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2018] [Accepted: 09/25/2018] [Indexed: 12/19/2022]
Abstract
The mitochondrial antiviral signal protein mitochondrial antiviral signaling protein, also known as virus-induced signaling adaptor (VISA), plays a key role in regulating host innate immune signaling pathways. This study identifies FK506 binding protein 8 (FKBP8) as a candidate interacting protein of VISA through the yeast two-hybrid technique. The interaction of FKBP8 with VISA, retinoic acid inducible protein 1 (RIG-I), and IFN regulatory factor 3 (IRF3) was confirmed during viral infection in mammalian cells by coimmunoprecipitation. Overexpression of FKBP8 using a eukaryotic expression plasmid significantly attenuated Sendai virus-induced activation of the promoter interferons β (IFN-β), and transcription factors nuclear factor κ-light chain enhancer of activated B cells (NF-κB) and IFN-stimulated response element (ISRE). Overexpression of FKBP8 also decreased dimer-IRF3 activity, but enhanced virus replication. Conversely, knockdown of FKBP8 expression by RNA interference showed opposite effects. Further studies indicated that FKBP8 acts as a negative interacting partner to regulate RLR-VISA signaling by acting on VISA and TANK binding kinase 1 (TBK1). Additionally, FKBP8 played a negative role on virus-induced signaling by inhibiting the formation of TBK1-IRF3 and VISA-TRAF3 complexes. Notably, FKBP8 also promoted the degradation of TBK1, RIG-I, and TRAF3 resulting from FKBP8 reinforced Sendai virus-induced endogenous polyubiquitination of RIG-I, TBK1, and TNF receptor-associated factor 3 (TRAF3). Therefore, a novel function of FKBP8 in innate immunity antiviral signaling regulation was revealed in this study.
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Affiliation(s)
- Shan-Shan Xu
- Key Laboratory of Functional Small Organic Molecules, Ministry of Education and College of Life Science, Jiangxi Normal University, Nanchang, China
| | - Liang-Guo Xu
- Key Laboratory of Functional Small Organic Molecules, Ministry of Education and College of Life Science, Jiangxi Normal University, Nanchang, China
| | - Cailei Yuan
- Jiangxi Key Laboratory of Nanomaterials and Sensors, School of Physics, Communication and Electronics, Jiangxi Normal University, Nanchang, China
| | - Sheng-Na Li
- Key Laboratory of Functional Small Organic Molecules, Ministry of Education and College of Life Science, Jiangxi Normal University, Nanchang, China
| | - Tian Chen
- Key Laboratory of Functional Small Organic Molecules, Ministry of Education and College of Life Science, Jiangxi Normal University, Nanchang, China
| | - Weiying Wang
- Key Laboratory of Functional Small Organic Molecules, Ministry of Education and College of Life Science, Jiangxi Normal University, Nanchang, China
| | - Changsheng Li
- Key Laboratory of Functional Small Organic Molecules, Ministry of Education and College of Life Science, Jiangxi Normal University, Nanchang, China
| | - Lingzhen Cao
- Key Laboratory of Functional Small Organic Molecules, Ministry of Education and College of Life Science, Jiangxi Normal University, Nanchang, China
| | - Hua Rao
- Key Laboratory of Functional Small Organic Molecules, Ministry of Education and College of Life Science, Jiangxi Normal University, Nanchang, China
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A multi-omics analysis of the regulatory changes induced by miR-223 in a monocyte/macrophage cell line. Biochim Biophys Acta Mol Basis Dis 2018; 1864:2664-2678. [PMID: 29778662 DOI: 10.1016/j.bbadis.2018.05.010] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2018] [Accepted: 05/15/2018] [Indexed: 02/06/2023]
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12
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Saito A, Nagaishi K, Iba K, Mizue Y, Chikenji T, Otani M, Nakano M, Oyama K, Yamashita T, Fujimiya M. Umbilical cord extracts improve osteoporotic abnormalities of bone marrow-derived mesenchymal stem cells and promote their therapeutic effects on ovariectomised rats. Sci Rep 2018; 8:1161. [PMID: 29348535 PMCID: PMC5773568 DOI: 10.1038/s41598-018-19516-6] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2017] [Accepted: 01/04/2018] [Indexed: 02/06/2023] Open
Abstract
Bone marrow-derived mesenchymal stem cells (BM-MSCs) are the most valuable source of autologous cells for transplantation and tissue regeneration to treat osteoporosis. Although BM-MSCs are the primary cells responsible for maintaining bone metabolism and homeostasis, their regenerative ability may be attenuated in postmenopausal osteoporosis patients. Therefore, we first examined potential abnormalities of BM-MSCs in an oestrogen-deficient rat model constructed by ovariectomy (OVX-MSCs). Cell proliferation, mobilisation, and regulation of osteoclasts were downregulated in OVX-MSCs. Moreover, therapeutic effects of OVX-MSCs were decreased in OVX rats. Accordingly, we developed a new activator for BM-MSCs using human umbilical cord extracts, Wharton’s jelly extract supernatant (WJS), which improved cell proliferation, mobilisation and suppressive effects on activated osteoclasts in OVX-MSCs. Bone volume, RANK and TRACP expression of osteoclasts, as well as proinflammatory cytokine expression in bone tissues, were ameliorated by OVX-MSCs activated with WJS (OVX-MSCs-WJ) in OVX rats. Fusion and bone resorption activity of osteoclasts were suppressed in macrophage-induced and primary mouse bone marrow cell-induced osteoclasts via suppression of osteoclast-specific genes, such as Nfatc1, Clcn7, Atp6i and Dc-stamp, by co-culture with OVX-MSCs-WJ in vitro. In this study, we developed a new activator, WJS, which improved the functional abnormalities and therapeutic effects of BM-MSCs on postmenopausal osteoporosis.
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Affiliation(s)
- Akira Saito
- Department of Orthopaedic Surgery, Sapporo Medical University, Sapporo, Japan
| | - Kanna Nagaishi
- Second Department of Anatomy, Sapporo Medical University, Sapporo, Japan. .,Department of Diabetic Cellular Therapeutics, Sapporo Medical University, Sapporo, Japan.
| | - Kousuke Iba
- Department of Orthopaedic Surgery, Sapporo Medical University, Sapporo, Japan
| | - Yuka Mizue
- Second Department of Anatomy, Sapporo Medical University, Sapporo, Japan.,Department of Diabetic Cellular Therapeutics, Sapporo Medical University, Sapporo, Japan
| | - Takako Chikenji
- Second Department of Anatomy, Sapporo Medical University, Sapporo, Japan.,Department of Diabetic Cellular Therapeutics, Sapporo Medical University, Sapporo, Japan
| | - Miho Otani
- Department of Diabetic Cellular Therapeutics, Sapporo Medical University, Sapporo, Japan
| | - Masako Nakano
- Second Department of Anatomy, Sapporo Medical University, Sapporo, Japan
| | - Kazusa Oyama
- Second Department of Anatomy, Sapporo Medical University, Sapporo, Japan
| | - Toshihiko Yamashita
- Department of Orthopaedic Surgery, Sapporo Medical University, Sapporo, Japan
| | - Mineko Fujimiya
- Second Department of Anatomy, Sapporo Medical University, Sapporo, Japan.,Department of Diabetic Cellular Therapeutics, Sapporo Medical University, Sapporo, Japan
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Li KC, Chang YH, Hsu MN, Lo SC, Li WH, Hu YC. Baculovirus-Mediated miR-214 Knockdown Shifts Osteoporotic ASCs Differentiation and Improves Osteoporotic Bone Defects Repair. Sci Rep 2017; 7:16225. [PMID: 29176755 PMCID: PMC5701180 DOI: 10.1038/s41598-017-16547-3] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Accepted: 11/14/2017] [Indexed: 12/14/2022] Open
Abstract
Osteoporotic patients often suffer from bone fracture but its healing is compromised due to impaired osteogenesis potential of bone marrow-derived mesenchymal stem cells (BMSCs). Here we aimed to exploit adipose-derived stem cells from ovariectomized rats (OVX-ASCs) for bone healing. We unraveled that OVX-ASCs highly expressed miR-214 and identified 2 miR-214 targets: CTNNB1 (β-catenin) and TAB2. We demonstrated that miR-214 targeting of these two genes blocked the Wnt pathway, led to preferable adipogenesis and hindered osteogenesis. As a result, OVX-ASCs implantation into OVX rats failed to heal critical-size metaphyseal bone defects. We further engineered the OVX-ASCs with a novel Cre/loxP-based hybrid baculovirus vector that conferred prolonged expression of miR-214 sponge. Gene delivery for miR-214 sponge expression successfully downregulated miR-214 levels, activated the Wnt pathway, upregulated osteogenic factors β-catenin/Runx2, downregulated adipogenic factors PPAR-γ and C/EBP-α, shifted the differentiation propensity towards osteogenic lineage, enhanced the osteogenesis of co-cultured OVX-BMSCs, elevated BMP7/osteoprotegerin secretion and hindered exosomal miR-214/osteopontin release. Consequently, implanting the miR-214 sponge-expressing OVX-ASCs tremendously improved bone healing in OVX rats. Co-expression of miR-214 sponge and BMP2 further synergized the OVX-ASCs-mediated bone regeneration in OVX rats. This study implicates the potential of suppressing miR-214 by baculovirus-mediated gene delivery in osteoporotic ASCs for regenerative medicine.
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Affiliation(s)
- Kuei-Chang Li
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu, 300, Taiwan
| | - Yu-Han Chang
- Center for Tissue Engineering, Chang Gung Memorial Hospital, Taoyuan, 333, Taiwan
- Department of Orthopaedic, Chang Gung Memorial Hospital, Taoyuan, 333, Taiwan
| | - Mu-Nung Hsu
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu, 300, Taiwan
| | - Shih-Chun Lo
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu, 300, Taiwan
| | - Wan-Hua Li
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu, 300, Taiwan
| | - Yu-Chen Hu
- Department of Chemical Engineering, National Tsing Hua University, Hsinchu, 300, Taiwan.
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14
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How to manage rheumatoid arthritis according to classic biomarkers and polymorphisms? ACTA ACUST UNITED AC 2017. [DOI: 10.1007/s11515-017-1452-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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15
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Xu D, Gao Y, Hu N, Wu L, Chen Q. miR-365 Ameliorates Dexamethasone-Induced Suppression of Osteogenesis in MC3T3-E1 Cells by Targeting HDAC4. Int J Mol Sci 2017; 18:ijms18050977. [PMID: 28471397 PMCID: PMC5454890 DOI: 10.3390/ijms18050977] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2017] [Revised: 04/27/2017] [Accepted: 04/28/2017] [Indexed: 12/25/2022] Open
Abstract
Glucocorticoid administration is the leading cause of secondary osteoporosis. In this study, we tested the hypotheses that histone deacetylase 4 (HDAC4) is associated with glucocorticoid-induced bone loss and that HDAC4 dependent bone loss can be ameliorated by miRNA-365. Our previous studies showed that miR-365 mediates mechanical stimulation of chondrocyte proliferation and differentiation by targeting HDAC4. However, it is not clear whether miR-365 has an effect on glucocorticoid-induced osteoporosis. We have shown that, in MC3T3-E1 osteoblasts, dexamethasone (DEX) treatment decreased the expression of miR-365, which is accompanied by the decrease of cell viability in a dose-dependent manner. Transfection of miR-365 ameliorated DEX-induced inhibition of MC3T3-E1 cell viability and alkaline phosphatase activity, and attenuated the suppressive effect of DEX on runt-related transcription factor 2 (Runx2), osteopontin (OPN), and collagen 1a1 (Col1a1) osteogenic gene expression. In addition, miR-365 decreased the expression of HDAC4 mRNA and protein by direct targeting the 3′-untranslated regions (3′-UTR) of HDAC4 mRNA in osteoblasts. MiR-365 increased Runx2 expression and such stimulatory effect could be reversed by HDAC4 over-expression in osteoblasts. Collectively, our findings indicate that miR-365 ameliorates DEX-induced suppression of cell viability and osteogenesis by regulating the expression of HDAC4 in osteoblasts, suggesting miR-365 might be a novel therapeutic agent for treatment of glucocorticoid-induced osteoporosis.
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Affiliation(s)
- Daohua Xu
- Department of Pharmacology, Guangdong Medical University, Dongguan 523808, China.
- Department of Orthopaedics, Warren Alpert Medical School of Brown University/Rhode Island Hospital, Providence, RI 02903, USA.
| | - Yun Gao
- Department of Orthopaedics, Warren Alpert Medical School of Brown University/Rhode Island Hospital, Providence, RI 02903, USA.
| | - Nan Hu
- Department of Orthopaedics, Warren Alpert Medical School of Brown University/Rhode Island Hospital, Providence, RI 02903, USA.
- Department of Rheumatology, the First Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710061, China.
| | - Longhuo Wu
- Department of Orthopaedics, Warren Alpert Medical School of Brown University/Rhode Island Hospital, Providence, RI 02903, USA.
- College of Pharmacy, Gannan Medical University, Ganzhou 341000, China.
| | - Qian Chen
- Department of Orthopaedics, Warren Alpert Medical School of Brown University/Rhode Island Hospital, Providence, RI 02903, USA.
- Bone and Joint Research Center, the First Affiliated Hospital and Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an 710061, China.
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16
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Treatment of Femoral Head Necrosis With Bone Marrow Mesenchymal Stem Cells Expressing Inducible Hepatocyte Growth Factor. Am J Ther 2017; 23:e1602-e1611. [PMID: 26164021 DOI: 10.1097/mjt.0000000000000276] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Our study assessed the effect of bone marrow mesenchymal stem cells (BMSCs) expressing inducible hepatocyte growth factor (HGF) on the recovery of femoral head necrosis (FHN). BMSCs were isolated by density gradient centrifugation. A recombinant AdTRE-HGF was constructed as the response plasmid and Adeno-X Tet-on as the regulator vector. The regulator and the response vectors were coinfected into BMSCs and induced at 0, 200, 500, 1000, and 1200 ng/mL doxycycline (Dox). After 3 days, the concentration of HGF was determined using enzyme-linked immunosorbent assay. Forty rabbits were selected to establish the FHN model and divided into 4 experimental groups. After the rabbits were killed by ketamine overdose, the restoration of FHN was assessed. The distribution of HGF-positive cells was observed by immunohistochemical method. Enzyme-linked immunosorbent assay results showed that 1000 ng/mL Dox induced the highest HGF expression level, even higher than the 1200 ng/mL Dox induction. The highest osteonecrosis incidence and empty lacunae percentage were found in group A compared with all the other groups (all P < 0.05). Furthermore, dramatically lower osteonecrosis incidence and empty lacunae percentage were found in group C compared with those of groups B and D (all P < 0.05). A significantly higher level of HGF protein was detected in group C compared with the other groups (all P < 0.05). Our study successfully developed the AdTRE-HGF, a recombinant adenovirus carrying HGF gene, for high expression of HGF in BMSCs. Importantly, introduction of BMSCs expressing HGF successfully produced the desired therapeutic effect in reversing FHN, in a Dox-dependent manner.
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Li D, Li K, Chen G, Xia J, Yang T, Cai P, Yao C, Yang Y, Yan S, Zhang R, Chen H. S100B suppresses the differentiation of C3H/10T1/2 murine embryonic mesenchymal cells into osteoblasts. Mol Med Rep 2016; 14:3878-86. [DOI: 10.3892/mmr.2016.5697] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2015] [Accepted: 08/09/2016] [Indexed: 11/05/2022] Open
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18
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Spina A, Montella R, Liccardo D, De Rosa A, Laino L, Mitsiadis TA, La Noce M. NZ-GMP Approved Serum Improve hDPSC Osteogenic Commitment and Increase Angiogenic Factor Expression. Front Physiol 2016; 7:354. [PMID: 27594842 PMCID: PMC4990559 DOI: 10.3389/fphys.2016.00354] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2016] [Accepted: 08/04/2016] [Indexed: 12/29/2022] Open
Abstract
Human dental pulp stem cells (hDPSCs), selected from the stromal-vascular fraction of dental pulp, are ecto-mesenchymal stem cells deriving from neural crests, successfully used in human bone tissue engineering. For their use in human therapy GMP procedures are required. For instance, the use of fetal bovine serum (FBS) is strongly discouraged in clinical practice due to its high risk of prions and other infections for human health. Alternatively, clinical grade sera have been suggested, including the New Zealand FBS (NZ-FBS). Therefore, the aim of this study was to evaluate the behavior of hDPSCs expanded in culture medium containing NZ-FBS. Since it was widely demonstrated hDPSCs display relevant capabilities to differentiate into osteogenic and angiogenic lineages, we performed a comparative study to assess if these features are also retained by cultivating the cells with a safer serum never tested on this cell line. hDPSCs were grown using NZ-FBS and conventional (C-FBS) for 7, 14, and 21 days, in both 2D and 3D cultures. Growth curves, expression of bone-related markers, calcification and angiogenesis were evaluated. NZ-FBS induced significant cell growth with respect to C-FBS and promoted an earlier increase expression of osteogenic markers, in particular of those involved in the formation of mineralized matrix (BSP and OPN) within 14 days. In addition, hDPSCs cultured in presence of NZ-FBS were found to produce higher mRNA levels of the angiogenic factors, such as VEGF and PDGFA. Taken together, our results highlight that hDPSCs proliferate, enhance their osteogenic commitment and increase angiogenic factors in NZ-FBS containing medium. These features have also been found when hDPSC were seeded on the clinical-grade collagen I scaffold (Bio-Gide®), leading to the conclusion that for human therapy some procedures and above all the use of GMP-approved materials have no negative impact.
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Affiliation(s)
- Anna Spina
- Sezione di Biotecnologie, Dipartimento di Medicina Sperimentale, Istologia Medica e Biologia Molecolare, Seconda Università degli Studi di Napoli Napoli, Italy
| | - Roberta Montella
- Sezione di Biotecnologie, Dipartimento di Medicina Sperimentale, Istologia Medica e Biologia Molecolare, Seconda Università degli Studi di Napoli Napoli, Italy
| | - Davide Liccardo
- Sezione di Biotecnologie, Dipartimento di Medicina Sperimentale, Istologia Medica e Biologia Molecolare, Seconda Università degli Studi di Napoli Napoli, Italy
| | - Alfredo De Rosa
- Sezione di Odontostomatologia, Dipartimento Multidisciplinare Medico-chirurgico, Seconda Università degli Studi di Napoli Napoli, Italy
| | - Luigi Laino
- Dipartimento di Medicina Clinica e Sperimentale, Università degli Studi di Foggia Foggia, Italy
| | - Thimios A Mitsiadis
- Orofacial Development and Regeneration, ZZM, Institute of Oral Biology, University of Zurich Zurich, Switzerland
| | - Marcella La Noce
- Sezione di Biotecnologie, Dipartimento di Medicina Sperimentale, Istologia Medica e Biologia Molecolare, Seconda Università degli Studi di Napoli Napoli, Italy
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19
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Duan P, Bonewald LF. The role of the wnt/β-catenin signaling pathway in formation and maintenance of bone and teeth. Int J Biochem Cell Biol 2016; 77:23-29. [PMID: 27210503 DOI: 10.1016/j.biocel.2016.05.015] [Citation(s) in RCA: 228] [Impact Index Per Article: 28.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2016] [Revised: 05/16/2016] [Accepted: 05/17/2016] [Indexed: 02/05/2023]
Abstract
The Wnt signaling pathway is known as one of the important molecular cascades that regulate cell fate throughout lifespan. The Wnt signaling pathway is further separated into the canonical signaling pathway that depends on the function of β-catenin (Wnt/β-catenin pathway) and the noncanonical pathways that operate independently of β-catenin (planar cell polarity pathway and Wnt/Ca(2+) pathway). The Wnt/β-catenin signaling pathway is complex and consists of numerous receptors, inhibitors, activators, modulators, phosphatases, kinases and other components. However, there is one central, critical molecule to this pathway, β-catenin. While there are at least 3 receptors, LRP 4, 5 and 6, and over twenty activators known as the wnts, and several inhibitors such as sclerostin, dickkopf and secreted frizzled-related protein, these all target β-catenin. These regulators/modulators function to target β-catenin either to the proteasome for degradation or to the nucleus to regulate gene expression. Therefore, the interaction of β-catenin with different factors and Wnt/β-catenin signaling pathway will be the subject of this review with a focus on how this pathway relates to and functions in the formation and maintenance of bone and teeth based on mainly basic and pre-clinical research. Also in this review, the role of this pathway in osteocytes, bone cells embedded in the mineralized matrix, is covered in depth. This pathway is not only important in mineralized tissue growth and development, but for modulation of the skeleton in response to loading and unloading and the viability and health of the adult and aging skeleton.
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Affiliation(s)
- Peipei Duan
- State Key Laboratory of Oral Diseases, Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China; Department of Oral and Craniofacial Sciences, School of Dentistry, University of Missouri-Kansas City, Kansas City, MO, USA
| | - L F Bonewald
- Department of Oral and Craniofacial Sciences, School of Dentistry, University of Missouri-Kansas City, Kansas City, MO, USA.
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20
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Yang JE, Song MS, Shen Y, Ryu PD, Lee SY. The Role of KV7.3 in Regulating Osteoblast Maturation and Mineralization. Int J Mol Sci 2016; 17:407. [PMID: 26999128 PMCID: PMC4813262 DOI: 10.3390/ijms17030407] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2016] [Revised: 03/02/2016] [Accepted: 03/10/2016] [Indexed: 11/19/2022] Open
Abstract
KCNQ (KV7) channels are voltage-gated potassium (KV) channels, and the function of KV7 channels in muscles, neurons, and sensory cells is well established. We confirmed that overall blockade of KV channels with tetraethylammonium augmented the mineralization of bone-marrow-derived human mesenchymal stem cells during osteogenic differentiation, and we determined that KV7.3 was expressed in MG-63 and Saos-2 cells at the mRNA and protein levels. In addition, functional KV7 currents were detected in MG-63 cells. Inhibition of KV7.3 by linopirdine or XE991 increased the matrix mineralization during osteoblast differentiation. This was confirmed by alkaline phosphatase, osteocalcin, and osterix in MG-63 cells, whereas the expression of Runx2 showed no significant change. The extracellular glutamate secreted by osteoblasts was also measured to investigate its effect on MG-63 osteoblast differentiation. Blockade of KV7.3 promoted the release of glutamate via the phosphorylation of extracellular signal-regulated kinase 1/2-mediated upregulation of synapsin, and induced the deposition of type 1 collagen. However, activation of KV7.3 by flupirtine did not produce notable changes in matrix mineralization during osteoblast differentiation. These results suggest that KV7.3 could be a novel regulator in osteoblast differentiation.
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Affiliation(s)
- Ji Eun Yang
- Laboratory of Veterinary Pharmacology, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 151-742, Korea.
| | - Min Seok Song
- Laboratory of Veterinary Pharmacology, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 151-742, Korea.
| | - Yiming Shen
- Laboratory of Veterinary Pharmacology, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 151-742, Korea.
| | - Pan Dong Ryu
- Laboratory of Veterinary Pharmacology, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 151-742, Korea.
| | - So Yeong Lee
- Laboratory of Veterinary Pharmacology, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 151-742, Korea.
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21
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Meng Y, Li X, Li Z, Liu C, Zhao J, Wang J, Liu Y, Yuan X, Cui Z, Yang X. Surface Functionalization of Titanium Alloy with miR-29b Nanocapsules To Enhance Bone Regeneration. ACS APPLIED MATERIALS & INTERFACES 2016; 8:5783-5793. [PMID: 26887789 DOI: 10.1021/acsami.5b10650] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Titanium and its alloys have been widely used over the past 3 decades as implants for healing bone defects. Nevertheless, the bioinert property of titanium alloy limits its clinical application and surface modification method is frequently performed to improve the biological and chemical properties. Recently, the delivery of microRNA with osteogenesis capability has been recognized as a promising tool to enhance bone regeneration of implants. Here, we developed a biodegradable coating to modify the titanium surface in order to enhance osteogenic bioactivity. The previous developed nanocapsules were used as the building blocks, and then a bioactive titanium coating was designed to entrap the miR-29b nanocapsules. This coating was not only favorable for cell adhesion and growth but also provided sufficient microRNA transfection efficacy and osteoinductive potential, resulting in a significant enhancement of bone regeneration on the surface of bioinert titanium alloy.
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Affiliation(s)
- Yubin Meng
- Tianjin Key Laboratory of Composite and Functional Materials, School of Materials Science & Engineering, Tianjin University , Tianjin 300072, China
| | - Xue Li
- Department of Clinical Microbiology, School of Laboratory Medicine, Tianjin Medical University , Tianjin 300203, China
| | - Zhaoyang Li
- Tianjin Key Laboratory of Composite and Functional Materials, School of Materials Science & Engineering, Tianjin University , Tianjin 300072, China
| | - Chaoyong Liu
- Tianjin Key Laboratory of Composite and Functional Materials, School of Materials Science & Engineering, Tianjin University , Tianjin 300072, China
| | - Jin Zhao
- Tianjin Key Laboratory of Composite and Functional Materials, School of Materials Science & Engineering, Tianjin University , Tianjin 300072, China
| | - Jianwei Wang
- Tianjin Key Laboratory of Composite and Functional Materials, School of Materials Science & Engineering, Tianjin University , Tianjin 300072, China
| | - Yunde Liu
- Department of Clinical Microbiology, School of Laboratory Medicine, Tianjin Medical University , Tianjin 300203, China
| | - Xubo Yuan
- Tianjin Key Laboratory of Composite and Functional Materials, School of Materials Science & Engineering, Tianjin University , Tianjin 300072, China
| | - Zhenduo Cui
- Tianjin Key Laboratory of Composite and Functional Materials, School of Materials Science & Engineering, Tianjin University , Tianjin 300072, China
| | - Xianjin Yang
- Tianjin Key Laboratory of Composite and Functional Materials, School of Materials Science & Engineering, Tianjin University , Tianjin 300072, China
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