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Dynamic expression of Mage-D1 in rat dental germs and potential role in mineralization of ectomesenchymal stem cells. Sci Rep 2022; 12:22615. [PMID: 36585447 PMCID: PMC9803661 DOI: 10.1038/s41598-022-27197-5] [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: 01/29/2022] [Accepted: 12/28/2022] [Indexed: 12/31/2022] Open
Abstract
Mage-D1 (MAGE family member D1) is involved in a variety of cell biological effects. Recent studies have shown that Mage-D1 is closely related to tooth development, but its specific regulatory mechanism is unclear. The purpose of this study was to investigate the expression pattern of Mage-D1 in rat dental germ development and its differential mineralization ability to ectomesenchymal stem cells (EMSCs), and to explore its potential mechanism. Results showed that the expression of Mage-D1 during rat dental germ development was temporally and spatially specific. Mage-D1 promotes the proliferation ability of EMSCs but inhibits their migration ability. Under induction by mineralized culture medium, Mage-D1 promotes osteogenesis and tooth-forming ability. Furthermore, the expression pattern of Mage-D1 at E19.5 d rat dental germ is similar to p75 neurotrophin receptor (p75NTR), distal-less homeobox 1 (Dlx1) and msh homeobox 1 (Msx1). In addition, Mage-D1 is binding to p75NTR, Dlx1, and Msx1 in vitro. These findings indicate that Mage-D1 is play an important regulatory role in normal mineralization of teeth. p75NTR, Dlx1, and Msx1 seem to be closely related to the underlying mechanism of Mage-D1 action.
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Liu P, Li Y, Wang W, Bai Y, Jia H, Yuan Z, Yang Z. Role and mechanisms of the NF-ĸB signaling pathway in various developmental processes. Biomed Pharmacother 2022; 153:113513. [DOI: 10.1016/j.biopha.2022.113513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Revised: 07/26/2022] [Accepted: 08/01/2022] [Indexed: 11/02/2022] Open
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Wu Q, Li J, Song P, Chen J, Xu Y, Qi S, Ma J, Pan Q. Knockdown of NRAGE induces odontogenic differentiation by activating NF-κB signaling in mouse odontoblast-like cells. Connect Tissue Res 2019; 60:71-84. [PMID: 29448842 DOI: 10.1080/03008207.2018.1439484] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
PURPOSE Neurotrophin receptor-interacting MAGE homologue (Nrage) plays an important role in bone development and the metabolism of normal skeletal structures. Our previous study showed that Nrage inhibited the odontogenic differentiation of mouse dental pulp cells. However, the potential roles and mechanism of Nrage in regulating odontogenic differentiation are unknown. The aim of this study was to investigate the molecular mechanism of Nrage in odontogenic differentiation of mouse odontoblast-like cells. MATERIALS AND METHODS Endogenous expression of Nrage was stably downregulated by lentivirus-mediated shRNA. Mineralized nodules formation was detected by alizarin red S staining. Dmp-1, Dspp, and ALP mRNA and protein levels were detected by qRT-PCR and western blotting, respectively. In addition, ALPase activity was detected. Confocal microscopy and co-immunoprecipitation (co-IP) were used to analyze the interactions between NRAGE and NF-κB signaling molecules. An IKK inhibitor was also used in the study. RESULTS NRAGE expression in odontoblasts was downregulated during mouse first maxillary molar development. Moreover, NRAGE expression was downregulated during odontogenic differentiation of odontoblast-like cells. NRAGE knockdown significantly upregulated DMP1 and DSP expression, increased ALPase activity, and promoted mineralized nodule formation. In addition, NRAGE knockdown increased the translocation of NF-κB1 to the nucleus and phosphorylation levels of p65. Co-IP results showed that NRAGE bound to IKKβ. Most importantly, the promoting effect of Nrage knockdown on odontoblastic differentiation was reduced after treatment with an IKK inhibitor. CONCLUSIONS Our data confirmed that NRAGE is an important regulator of odontogenic differentiation of odontoblasts by inhibiting the NF-κB signaling pathway through binding to IKKβ. ABBREVIATIONS Nrage: neurotrophin receptor-interacting MAGE homologue; DSP: dentin sialophospho protein; DMP-1: dentin matrix protein-1; BMP: bone morphogenetic protein; Wnt: wingless; NF-κB: nuclear factor of activated B cells; DAPI: 4',6-diamidino-2-phenylindole; KO: knockout; DPCs: dental pulp cells; AA: ascorbic acid; β-Gly: β-glycerophosphate; Dex: dexamethasone; co-IP: co-immunoprecipitation; IκB: inhibitor of NF-κB; IKK: IκB kinase.
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Affiliation(s)
- Qi Wu
- a Department of Clinical Laboratory , Shanghai 10th People's Hospital of Tongji University , Shanghai , P. R. China.,b Department of Laboratory Medicine, Shanghai Children's Medical Center , Shanghai Jiaotong University School of Medicine , Shanghai , China
| | - Jing Li
- c Department of Clinical Laboratory , Maternal and Child Health Care of Zaozhuang , Shandong , P. R. China
| | - Pingping Song
- d Department of Clinical Laboratory , Liaocheng People's Hospital , Liaocheng , China
| | - Jing Chen
- e Department of Clinical Laboratory , Luoyang Orthopedic Hospital , Luoyang , Henan , P. R. China
| | - Yuanzhi Xu
- f Department of Stomatology , Shanghai 10th People's Hospital of Tongji University , Shanghai , P. R. China
| | - Shengcai Qi
- f Department of Stomatology , Shanghai 10th People's Hospital of Tongji University , Shanghai , P. R. China
| | - Ji Ma
- b Department of Laboratory Medicine, Shanghai Children's Medical Center , Shanghai Jiaotong University School of Medicine , Shanghai , China.,g Central Laboratory , Shanghai 10th People's Hospital of Tongji University , Shanghai , P. R. China
| | - Qiuhui Pan
- b Department of Laboratory Medicine, Shanghai Children's Medical Center , Shanghai Jiaotong University School of Medicine , Shanghai , China
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Yan L, Sun S, Qu L. Insulin-like growth factor-1 promotes the proliferation and odontoblastic differentiation of human dental pulp cells under high glucose conditions. Int J Mol Med 2017; 40:1253-1260. [PMID: 28902344 DOI: 10.3892/ijmm.2017.3117] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2016] [Accepted: 08/07/2017] [Indexed: 12/24/2022] Open
Abstract
Insulin-like growth factor-1 (IGF-1) promotes human dental pulp stem cell proliferation and osteogenic differentiation. However, the effects of IGF-1 on the proliferation, apoptosis and odontoblastic differentiation (mineralization) of dental pulp cells (DPCs) under high glucose (GLU) conditions remain unclear. In this study, isolated primary human DPCs were treated with various concentrations of high GLU. Cell proliferation and apoptosis were determined by Cell Counting Kit-8 and Annexin V-FITC/PI assays, respectively. The cells were cultured in odontoblastic induction medium containing various concentrations of high GLU. Odontoblastic differentiation was determined by alkaline phosphatase (ALP) activity assay. Mineralization formation was evaluated by von Kossa staining. The expression levels of IGF family members were measured by western blot analysis and RT-qPCR during proliferation and differentiation. The cells were then exposed to 25 mM GLU and various concentrations of IGF-1. Cell proliferation, apoptosis, ALP activity, mineralization formation and the levels of mineralization-related proteins were then evaluated. Our results revealed that high GLU significantly inhibited cell proliferation and promoted cell apoptosis. GLU (25 and 50 mM) markedly reduced ALP activity and mineralization on days 7 and 14 after differentiation. The levels of IGF family members were markedly decreased by high GLU during proliferation and differentiation. However, IGF-1 significantly reversed the effects of high GLU on cell proliferation and apoptosis. Additionally, IGF-1 markedly restored the reduction of ALP activity and mineralization induced by high GLU. Our findings thus indicate that IGF-1 attenuates the high GLU-induced inhibition of DPC proliferation, differentiation and mineralization.
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Affiliation(s)
- Lu Yan
- Department of Endodontics, School of Stomatology, China Medical University, Shenyang, Liaoning 110002, P.R. China
| | - Shangmin Sun
- Department of Periodontics, School of Stomatology, China Medical University, Shenyang, Liaoning 110002, P.R. China
| | - Liu Qu
- Department of Endodontics, School of Stomatology, China Medical University, Shenyang, Liaoning 110002, P.R. China
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NRAGE induces β-catenin/Arm O-GlcNAcylation and negatively regulates Wnt signaling. Biochem Biophys Res Commun 2017; 487:433-437. [PMID: 28427939 DOI: 10.1016/j.bbrc.2017.04.080] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2017] [Revised: 03/31/2017] [Accepted: 04/15/2017] [Indexed: 01/17/2023]
Abstract
The Wnt pathway is crucial for animal development, as well as tumor formation. Understanding the regulation of Wnt signaling will help to elucidate the mechanism of the cell cycle, cell differentiation and tumorigenesis. It is generally accepted that in response to Wnt signals, β-catenin accumulates in the cytoplasm and is imported into the nucleus where it recruits LEF/TCF transcription factors to activate the expression of target genes. In this study, we report that human NRAGE, a neurotrophin receptor p75 (p75NTR) binding protein, markedly suppresses the expression of genes activated by the Wnt pathway. Consistent with this finding, loss of function of NRAGE by RNA interference (RNAi) activates the Wnt pathway. Moreover, NRAGE suppresses the induction of axis duplication by microinjected β-catenin in Xenopus embryos. To our surprise, NRAGE induces nuclear localization of β-catenin and increases its DNA binding ability. Further studies reveal that NRAGE leads to the modification of β-catenin/Arm with O-linked beta-N-acetylglucosamine (O-GlcNAc), and failure of the association between β-catenin/Arm and pygopus(pygo) protein, which is required for transcriptional activation of Wnt target genes. Therefore, our findings suggest a novel mechanism for regulating Wnt signaling.
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Qi S, Yan Y, Wen Y, Li J, Wang J, Chen F, Tang X, Shang G, Xu Y, Wang R. The effect of delta-like 1 homologue on the proliferation and odontoblastic differentiation in human dental pulp stem cells. Cell Prolif 2017; 50. [PMID: 28205268 DOI: 10.1111/cpr.12335] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2016] [Accepted: 01/03/2017] [Indexed: 01/09/2023] Open
Abstract
INTRODUCTION This study aimed to investigate the functions of delta-like homologue 1 (DLK1) in the proliferation and differentiation of human dental pulp stem cells (hDPSCs). METHODS Immunohistochemical analysis was used to determine the expression of alkaline phosphatase (ALP), dentin sialophosphoprotein (DSPP), DLK1, NOTCH1 and p-ERK1/2 in the mouse first maxillary molar. Recombinant lentivirus was constructed to overexpress DLK1 stably in hDPSCs. The cell viability and proliferation of hDPSCs were examined by CCK8 and EdU incorporation assay respectively. The odontoblastic differentiation of hDPSCs was determined by detection of ALPase activity assay, ALP and alizarin red staining and the expression of mineralization-related genes including ALP, DSPP and dental matrix protein. The mRNA and protein levels of DLK1 and p-ERK1/2 protein expression were detected. ERK inhibitor was used to test the differentiation effect of DLK1 on hDPSCs. RESULTS Delta-like homologue 1 was highly expressed on the odontoblasts and dental pulp cells on the first maxillary molar; the expression of p-ERK1/2 is similar with the DLK1 in the same process. The expression level of DLK1 increased significantly after the odontoblastic induction of hDPSCs. DLK1 overexpression increased the proliferation ability of hDPSCs and inhibited odontoblastic differentiation of hDPSCs. The protein level of p-ERK1/2 significantly increased in hDPSCs/dlk1-oe group. ERK signalling pathway inhibitor reversed the odontoblastic differentiation effects of DLK1 on hDPSCs. CONCLUSIONS The proliferation of hDPSCs was promoted after DLK1 overexpression. DLK1 inhibited the odontoblastic differentiation of hDPSCs, which maybe through ERK signalling pathway.
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Affiliation(s)
- Shengcai Qi
- Department of Stomatology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Yanhong Yan
- Department of Pediatric Dentistry, School & Hospital of Stomatology, Tongji University, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai, China
| | - Yue Wen
- Institute of Stomatology, Hospital of Stomatology, Nanjing Medical University, Nanjing, China
| | - Jialiang Li
- Institute of Stomatology, Hospital of Stomatology, Nanjing Medical University, Nanjing, China
| | - Jing Wang
- Department of Stomatology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Fubo Chen
- Department of Stomatology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Xiaoshan Tang
- Department of Stomatology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Guangwei Shang
- Department of Stomatology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Yuanzhi Xu
- Department of Stomatology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Raorao Wang
- Department of Stomatology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
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Yang K, Wang Y, Ju Y, Li G, Liu C, Liu J, Liu Q, Wen X, Liu LC. p75 neurotrophin receptor regulates differential mineralization of rat ectomesenchymal stem cells. Cell Prolif 2016; 50. [PMID: 27672006 DOI: 10.1111/cpr.12290] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2016] [Accepted: 07/30/2016] [Indexed: 12/13/2022] Open
Abstract
OBJECTIVES The aim of this study was to investigate whether p75NTR (p75 neurotrophin receptor) regulates differential mineralization capacity of rEMSCs (rat ectomesenchymal stem cells) and underlying mechanisms associated with Mage-D1 (melanoma-associated antigens-D1). MATERIALS AND METHODS Immunohistochemical staining of p75NTR in developing tooth germs was performed on E12.5d (embryonic 12.5 days) and E19.5d (embryonic 19.5 days). E12.5d EMSCs and E19.5d EMSCs were isolated in the same pregnant Sprague-Dawley rats from embryonic maxillofacial processes and tooth germs. p75NTR small-interfering RNA, p75NTR overexpression plasmid, Mage-D1 small-interfering RNA and recombined rat NGF were used to transfect cells. RESULTS p75NTR was expressed in epithelial-mesenchymal interaction areas at E12.5d and E19.5d tooth germ development stages. E19.5d EMSCs had higher p75NTR expression levels and differential mineralization capacity but lower levels of cell proliferation. Under induction by mineralized culture medium, the potential of differential mineralization had identical trends in regulation of p75NTR in EMSCs; Mage-D1 did not fluctuate and TrkA was not expressed. Binding of p75NTR and Mage-D1 were detected. Mage-D1 knockdown significantly down-regulated expression of related genes, which NGF could not rescue. CONCLUSION p75NTR participated in tooth germ development stages and mediated differential mineralization of EMSCs. p75NTR played a critical role in regulating the potential of differential mineralization of EMSCs. Mage-D1 seemed to act as a bridge in the underlying mechanism of effects of p75NTR.
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Affiliation(s)
- Kun Yang
- Department of Stomatology, Daping Hospital of the Third Military Medical University, Chongqing, China
| | - Yingying Wang
- Department of Stomatology, Daping Hospital of the Third Military Medical University, Chongqing, China
| | - Yingxin Ju
- Department of Stomatology, Daping Hospital of the Third Military Medical University, Chongqing, China
| | - Gang Li
- Department of Stomatology, Daping Hospital of the Third Military Medical University, Chongqing, China
| | - Chang Liu
- Department of Stomatology, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Junyu Liu
- Department of Stomatology, Xinqiao Hospital of the Third Military Medical University, Chongqing, China
| | - Qi Liu
- Department of Stomatology, The Affiliated Hospital of Zunyi Medical University, Guizhou, China
| | - Xiujie Wen
- Department of Stomatology, Daping Hospital of the Third Military Medical University, Chongqing, China
| | - Lu Chuan Liu
- Department of Stomatology, Daping Hospital of the Third Military Medical University, Chongqing, China
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Wu Q, Qi S, Ma J, Chen F, Chen J, Li J, Zhang X, Xu Y, Pan Q, Wang R. The Effect of NRAGE on cell cycle and apoptosis of human dental pulp cells and MDPC-23. Int J Clin Exp Med 2015; 8:10657-10667. [PMID: 26379857 PMCID: PMC4565240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2015] [Accepted: 06/21/2015] [Indexed: 06/05/2023]
Abstract
OBJECTIVES Neurotrophin receptor-mediated melanoma antigen-encoding gene homology (NRAGE) is an important regulator of proliferation, cell cycle arrest and apoptosis. Our previous study showed that NRAGE is an important regulator of proliferation and odontogenic differentiation of mouse dental pulp cells. This study aimed to investigate the effects of NRAGE on the cell cycle and apoptosis on human dental pulp cells (hDPCs) and MDPC-23. MATERIALS AND METHODS Cells were infected by recombinant lentivirus to stably knockdown the expression of NRAGE, then the biological effects of NRAGE on the MDPC-23 was detected. The cell cycle distributions and apoptosis of hDPCs and MCPC-23 were performed by flow cytometric analysis. Simultaneously, the cell cycle and apoptosis were also detected after cells treated with IKK inhibitor. RESULTS The mRNA and protein levels of NRAGE decreased significantly after infected by recombinant lentivirus. Knockdown of NRAGE inhibited the apoptosis in hDPCs and MCPC-23. Knockdown of NRAGE show significantly G0G1 arrest in hDPCs, while no significantly difference in MDPC-23. Meanwhile, Knockdown of NRAGE activated the NF-κB signaling pathway. After treated with IKK inhibitor, the effect of NRAGE knockdown on apoptosis was reversed in both hDPCs and MDPC-23. CONCLUSION NRAGE is a potent regulator for cell cycle and apoptosis of hDPCs. Knockdown of NRAGE inhibited apoptosis of hDPCs and MDPC-23 through the NF-κB signaling pathway.
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Affiliation(s)
- Qi Wu
- Department of Clinical Laboratory, Shanghai Tenth People’s Hospital, Tongji UniversityShanghai, China
| | - Shengcai Qi
- Department of Stomatology, Shanghai Tenth People’s Hospital, Tongji UniversityShanghai, China
| | - Ji Ma
- Department of Central Laboratory, Shanghai Tenth People’s Hospital, Tongji UniversityShanghai, China
| | - Fubo Chen
- Department of Stomatology, Shanghai Tenth People’s Hospital, Tongji UniversityShanghai, China
| | - Jing Chen
- Department of Clinical Laboratory, Shanghai Tenth People’s Hospital, Tongji UniversityShanghai, China
| | - Jing Li
- Department of Clinical Laboratory, Shanghai Tenth People’s Hospital, Tongji UniversityShanghai, China
| | - Xu Zhang
- Department of Stomatology, Shanghai Tenth People’s Hospital, Tongji UniversityShanghai, China
| | - Yuanzhi Xu
- Department of Stomatology, Shanghai Tenth People’s Hospital, Tongji UniversityShanghai, China
| | - Qiuhui Pan
- Department of Central Laboratory, Shanghai Tenth People’s Hospital, Tongji UniversityShanghai, China
| | - Raorao Wang
- Department of Stomatology, Shanghai Tenth People’s Hospital, Tongji UniversityShanghai, China
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