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Wang MC, Chang KW, Lin SC, Hsu LH, Hung PS. Dental pulp cells cocultured with macrophages aggravate the inflammatory conditions stimulated by LPS. BMC Oral Health 2023; 23:991. [PMID: 38071305 PMCID: PMC10710708 DOI: 10.1186/s12903-023-03625-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Accepted: 11/05/2023] [Indexed: 12/18/2023] Open
Abstract
BACKGROUND Pulp inflammation is complex interactions between different types of cells and cytokines. To mimic the interactions of different types of cells in inflamed dental pulp tissues, dental pulp cells (DPCs) were cocultured with different ratios of macrophages (THP-1) or LPS treatment. METHODS DPCs were cocultured with various ratios of THP-1, then photographed cell morphology and determined cell viability by MTT assay at preset times. Total RNA was also extracted to measure the inflammation marker-IL-6 and IL-8 expressions by RT-Q-PCR. The DPCs and THP-1 were treated with 0.01 - 1μg/ml lipopolysaccharide (LPS) and extract RNA at preset times, and detected IL-6 and IL-8 expression. DPCs were cocultured with various ratios of THP-1 with 0.1 μg/mL LPS, and detected IL-6 and IL-8 expression after 24 and 48 h. The data were analyzed by unpaired t-test or Mann-Whitney test. Differences were considered statistically significant when p < 0.05. RESULTS THP-1 and DPCs coculture models did not suppress the viability of DPCs and THP-1. Cocultured with various ratios of THP-1 could increase IL-6 and IL-8 expressions of DPCs (p = 0.0056 - p < 0.0001). The expressions of IL-6 and IL-8 were stronger in higher ratio groups (p = 0.0062 - p < 0.0001). LPS treatment also induced IL-6 and IL-8 expressions of DPCs and THP-1 (p = 0.0179 - p < 0.0001 and p = 0.0189 - p < 0.0001, separately). Under the presence of 0.1 μg/mL LPS, DPCs cocultured with THP-1 for 24 h also enhanced IL-6 and IL-8 expression (p = 0.0022). After cocultured with a higher ratio of THP-1 for 48 h, IL-6 and IL-8 expressions were even stronger in the presence of LPS (p = 0.0260). CONCLUSIONS Coculturing dental pulp cells and macrophages under LPS treatment aggravate the inflammatory process. The responses of our models were more severe than traditional inflamed dental models and better represented what happened in the real dental pulp. Utilizing our models to explore the repair and regeneration in endodontics will be future goals.
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Affiliation(s)
- Min-Ching Wang
- Division of Pediatric Dentistry, Department of Dentistry, Wan Fang Hospital, Taipei Medical University, Taipei, Taiwan
- Department of Dentistry, National Yang Ming Chiao Tung University, Taipei, Taiwan
- Department of Stomatology, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Kuo-Wei Chang
- Department of Dentistry, National Yang Ming Chiao Tung University, Taipei, Taiwan
- Institute of Oral Biology, School of Dentistry, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Shu-Chun Lin
- Department of Dentistry, National Yang Ming Chiao Tung University, Taipei, Taiwan
- Institute of Oral Biology, School of Dentistry, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Ling-Hsin Hsu
- Department of Dentistry, Taipei City Hospital, Taipei, Taiwan
| | - Pei-Shih Hung
- Institute of Oral Biology, School of Dentistry, National Yang Ming Chiao Tung University, Taipei, Taiwan.
- Department of Medical Research, National Yang Ming Chiao Tung University Hospital, Yilan, Taiwan.
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Wang MC, Chang KW, Lin SC, Hung PS. Biodentine but not MTA induce DSPP expression of dental pulp cells with different severity of LPS-induced inflammation. Clin Oral Investig 2023; 27:1207-1214. [PMID: 36208328 DOI: 10.1007/s00784-022-04734-0] [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: 06/03/2022] [Accepted: 10/01/2022] [Indexed: 11/03/2022]
Abstract
OBJECTIVES To explore the inflammatory and differentiation response in inflamed dental pulp cells (DPCs) induced by lipopolysaccharide (LPS) under different conditions with Biodentine and mineral trioxide aggregate (MTA) treatment. MATERIALS AND METHODS DPCs were treated with 0.001-1 µg/mL LPS for different periods to induce inflammation. Normal and inflamed DPCs were further treated with 0.14 mg/mL Biodentine or 0.13 mg/mL MTA for different periods. mRNA expression level of IL-6, IL-8 and ALP were analysed by qPCR. DSPP protein expression was detected by western blot. The data were analysed by the Mann-Whitney test, unpaired t test or two-way ANOVA. RESULTS After treatment for different times and with different concentrations of LPS, different severity of pulp inflammation was revealed by the expressions of IL-6 and IL-8. Higher concentrations of LPS induced higher IL-6 and IL-8 expressions, and these expressions first increased and then decreased (p < 0.0001). At 96 and 192 h, Biodentine significantly suppressed IL-6 expression in both normal and inflamed DPCs (p < 0.05). At 48 and 96 h, Biodentine suppressed ALP expression in both normal and inflamed DPCs (p < 0.05). At 48 and 96 h, Biodentine induced DSPP expressions in both normal and inflamed DPCs (p < 0.05). CONCLUSION Biodentine enhanced more DSPP differentiation of both normal and inflamed DPCs under different treatment durations than MTA. CLINICAL RELEVANCE The prognosis of vital pulp therapy may depend on the severity of pulp inflammation which is difficult to be determined in clinical settings. Therefore, Biodentine may enhance odontogenic differentiation in different severity of pulp inflammation imply its clinical indications.
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Affiliation(s)
- Min-Ching Wang
- Division of Dentistry, Taipei Municipal Hospital, WanFang Branch, Taipei, Taiwan.,Department of Dentistry, National Yang Ming Chiao Tung University, Taipei, Taiwan.,Department of Stomatology, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Kuo-Wei Chang
- Department of Dentistry, National Yang Ming Chiao Tung University, Taipei, Taiwan.,Institute of Oral Biology, School of Dentistry, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Shu-Chun Lin
- Department of Dentistry, National Yang Ming Chiao Tung University, Taipei, Taiwan.,Institute of Oral Biology, School of Dentistry, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Pei-Shih Hung
- Institute of Oral Biology, School of Dentistry, National Yang Ming Chiao Tung University, Taipei, Taiwan. .,Department of Medical Research, National Yang Ming Chiao Tung University Hospital, Siaoshe Road, No.169, Yilan, 26058, Taiwan.
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3
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MicroRNA and their implications in dental pulp inflammation: current trends and future perspectives. Odontology 2022:10.1007/s10266-022-00762-0. [DOI: 10.1007/s10266-022-00762-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Accepted: 10/18/2022] [Indexed: 11/25/2022]
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4
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Deng L, Qing W, Lai S, Zheng J, Liu C, Huang H, Peng P, Mu Y. Differential Expression Profiling of microRNAs in Human Placenta-Derived Mesenchymal Stem Cells Cocultured with Grooved Porous Hydroxyapatite Scaffolds. DNA Cell Biol 2022; 41:292-304. [PMID: 35180361 DOI: 10.1089/dna.2021.0850] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
Scaffold materials used for bone defect repair are often limited by osteogenic efficacy. Moreover, microRNAs (miRNAs) are involved in regulating the expression of osteogenic-related genes. In previous studies, we verified the enhancement of osteogenesis using a grooved porous hydroxyapatite scaffold (HAG). In the present study, we analyzed the contribution of HAG to the osteogenic differentiation of human placenta-derived mesenchymal stem cells (hPMSCs) from the perspective of miRNA differential expression. Furthermore, results showed that miRNAs were differentially expressed in the osteogenic differentiation of hPMSCs cocultured with HAG. In detail, 16 miRNAs were significantly upregulated and 29 miRNAs were downregulated with HAG. In addition, bioinformatics analyses showed that the differentially expressed miRNAs were enriched in a variety of biological processes, including signal transduction, cell metabolism, cell junctions, cell development and differentiation, and that they were associated with osteogenic differentiation through axon guidance, mitogen-activated protein kinase, and the transforming growth factor beta signaling pathway. Furthermore, multiple potential target genes of these miRNAs were closely related to osteogenic differentiation. Importantly, overexpression of miR-146a-5p (an upregulated miRNA) promoted the osteogenic differentiation of hPMSCs, and miR-145-5p overexpression (a downregulated miRNA) inhibited the osteogenic differentiation of hPMSCs.
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Affiliation(s)
- Li Deng
- Stomatology Department, Sichuan Provincial People's Hospital, School of Medicine, University of Electronic and Technology of China, Chengdu, China
| | - Wei Qing
- School of Stomatology, Southwest Medical University, Luzhou, China
| | - Shuang Lai
- Stomatology Department, Sichuan Provincial People's Hospital, School of Medicine, University of Electronic and Technology of China, Chengdu, China
| | - Jiajun Zheng
- School of Stomatology, Southwest Medical University, Luzhou, China
| | - Cong Liu
- Stomatology Department, Sichuan Provincial People's Hospital, School of Medicine, University of Electronic and Technology of China, Chengdu, China
| | - Hao Huang
- Key Laboratory of Advanced Technologies of Materials (Ministry of Education), School of Materials Science and Engineering, Southwest Jiaotong University, Chengdu, China
| | - Pairan Peng
- School of Stomatology, Southwest Medical University, Luzhou, China
| | - Yandong Mu
- Stomatology Department, Sichuan Provincial People's Hospital, School of Medicine, University of Electronic and Technology of China, Chengdu, China
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Portland Cement: An Overview as a Root Repair Material. BIOMED RESEARCH INTERNATIONAL 2022; 2022:3314912. [PMID: 35036431 PMCID: PMC8758263 DOI: 10.1155/2022/3314912] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/29/2021] [Accepted: 12/08/2021] [Indexed: 01/08/2023]
Abstract
Portland cement (PC) is used in challenging endodontic situations in which preserving the health and functionality of pulp tissue is of considerable importance. PC forms the main component of mineral trioxide aggregate (MTA) and demonstrates similar desirable properties as an orthograde or retrograde filling material. PC is able to protect pulp against bacterial infiltration, induce reparative dentinogenesis, and form dentin bridge during the pulp healing process. The biocompatibility, bioactivity, and physical properties of PC have been investigated in vitro and in animal models, as well as in some limited clinical trials. This paper reviews Portland cement's structure and its characteristics and reaction in various environments and eventually accentuates the present concerns with this material. This bioactive endodontic cement has shown promising success rates compared to MTA; however, considerable modifications are required in order to improve its characteristics and expand its application scope as a root repair material. Hence, the extensive chemical modifications incorporated into PC composition to facilitate preparation and handling procedures are discussed. It is still important to further address the applicability, reliability, and cost-effectiveness of PC before transferring into day-to-day clinical practice.
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Flanagan D. Extraction and replantation of a periapically infected tooth. Clin Case Rep 2022; 10:e05278. [PMID: 35106162 PMCID: PMC8787722 DOI: 10.1002/ccr3.5278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Accepted: 11/10/2021] [Indexed: 11/30/2022] Open
Abstract
At times, an infected tooth that may be deemed unrestorable may be salvaged by atraumatic removal, an in-hand apicoectomy and retrograde seal, then replantation. This patient was referred to this author for an extraction and implant treatment of the maxillary left second premolar. After a discussion, the patient preferred to salvage the tooth if possible. The tooth was successfully atraumatically removed, and an in-hand apicoectomy and retrograde amalgam seal was placed. The tooth was immediately replaced into its socket and was stable. The occlusal surface was flattened to prevent and off axial loading. A bis-acryl brace was applied to the facial and lingual aspect to prevent an overload while the tooth was healing. The patient was admonished to maintain a soft diet. After 3 weeks, the braces were removed, and the tooth was found to be stable. After 8 weeks, the tooth was asymptomatic, and the patient was able to revert to her normal diet without pain. While extraction, placing an apical seal and replantation of teeth is not a new modality; nonetheless, clinicians may need to be reminded of this procedure to increase the number of options presented to patients.
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Chitosan-Based Accelerated Portland Cement Promotes Dentinogenic/Osteogenic Differentiation and Mineralization Activity of SHED. Polymers (Basel) 2021; 13:polym13193358. [PMID: 34641172 PMCID: PMC8512062 DOI: 10.3390/polym13193358] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Revised: 09/05/2021] [Accepted: 09/25/2021] [Indexed: 01/26/2023] Open
Abstract
Calcium silicate-based cements (CSCs) are widely used in various endodontic treatments to promote wound healing and hard tissue formation. Chitosan-based accelerated Portland cement (APC-CT) is a promising and affordable material for endodontic use. This study investigated the effect of APC-CT on apoptosis, cell attachment, dentinogenic/osteogenic differentiation and mineralization activity of stem cells from human exfoliated deciduous teeth (SHED). APC-CT was prepared with various concentrations of chitosan (CT) solution (0%, 0.625%, 1.25% and 2.5% (w/v)). Cell attachment was determined by direct contact analysis using field emission scanning electron microscopy (FESEM); while the material extracts were used for the analyses of apoptosis by flow cytometry, dentinogenic/osteogenic marker expression by real-time PCR and mineralization activity by Alizarin Red and Von Kossa staining. The cells effectively attached to the surfaces of APC and APC-CT, acquiring flattened elongated and rounded-shape morphology. Treatment of SHED with APC and APC-CT extracts showed no apoptotic effect. APC-CT induced upregulation of DSPP, MEPE, DMP-1, OPN, OCN, OPG and RANKL expression levels in SHED after 14 days, whereas RUNX2, ALP and COL1A1 expression levels were downregulated. Mineralization assays showed a progressive increase in the formation of calcium deposits in cells with material containing higher CT concentration and with incubation time. In conclusion, APC-CT is nontoxic and promotes dentinogenic/osteogenic differentiation and mineralization activity of SHED, indicating its regenerative potential as a promising substitute for the commercially available CSCs to induce dentin/bone regeneration.
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Song W, Li S, Tang Q, Chen L, Yuan Z. In vitro biocompatibility and bioactivity of calcium silicate‑based bioceramics in endodontics (Review). Int J Mol Med 2021; 48:128. [PMID: 34013376 PMCID: PMC8136140 DOI: 10.3892/ijmm.2021.4961] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Accepted: 03/19/2021] [Indexed: 12/26/2022] Open
Abstract
Calcium silicate-based bioceramics have been applied in endodontics as advantageous materials for years. In addition to excellent physical and chemical properties, the biocompatibility and bioactivity of calcium silicate-based bioceramics also serve an important role in endodontics according to previous research reports. Firstly, bioceramics affect cellular behavior of cells such as stem cells, osteoblasts, osteoclasts, fibroblasts and immune cells. On the other hand, cell reaction to bioceramics determines the effect of wound healing and tissue repair following bioceramics implantation. The aim of the present review was to provide an overview of calcium silicate-based bioceramics currently applied in endodontics, including mineral trioxide aggregate, Bioaggregate, Biodentine and iRoot, focusing on their in vitro biocompatibility and bioactivity. Understanding their underlying mechanism may help to ensure these materials are applied appropriately in endodontics.
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Affiliation(s)
- Wencheng Song
- Department of Stomatology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430022, P.R. China
| | - Shue Li
- Department of Stomatology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430022, P.R. China
| | - Qingming Tang
- Department of Stomatology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430022, P.R. China
| | - Lili Chen
- Department of Stomatology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430022, P.R. China
| | - Zhenglin Yuan
- Department of Stomatology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430022, P.R. China
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9
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Wang MC, Tu HF, Chang KW, Lin SC, Yeh LY, Hung PS. The molecular functions of Biodentine and mineral trioxide aggregate in lipopolysaccharide-induced inflamed dental pulp cells. Int Endod J 2021; 54:1317-1327. [PMID: 33711171 DOI: 10.1111/iej.13513] [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: 05/26/2020] [Accepted: 03/08/2021] [Indexed: 11/26/2022]
Abstract
AIM To explore the proliferation, adhesion and differentiation response and the underlying mechanisms that occur in lipopolysaccharide (LPS)-induced inflamed dental pulp cells (DPCs) in contact with Biodentine and mineral trioxide aggregate (MTA). METHODOLOGY The DPCs were isolated from three healthy donors and named DPC-H1 to DPC-H3. The DPCs were pre-cultured with 2 or 5 μg mL-1 LPS for 24 h to induce inflammation. The expression of inflammation marker miR-146a was detected by q-PCR. The normal and LPS-induced DPCs were further treated with 0.14 mg mL-1 Biodentine or 0.13 mg mL-1 MTA for 24 h. MTT assay and adhesion assay were used to analyse the changes of cell phenotypes. DSPP, AKT and ERK expressions were detected by Western blotting. The data were analysed by Mann-Whitney test or two-way anova. Differences were considered statistically significant when P < 0.05. RESULTS In LPS-induced DPCs, Biodentine and MTA treatment neither induced nor aggravated LPS-induced inflammation, but their presence did increase the expression of the odontogenic differentiation marker DSPP. Under 2 or 5 μg mL-1 LPS-induced inflammation, Biodentine and MTA promoted the proliferation of DPC cells, and significantly in DPC-H2 (P < 0.0001 for both reagents). With the treatment of 2 μg mL-1 LPS, the cell adhesion of DPCs on the fibronectin-coated culture plates was increased significantly by Biodentine (P = 0.0413) and MTA (P < 0.0001). Biodentine and MTA regulated cell adhesion on the fibronectin-coated culture plates (P < 0.0001 for both reagents) and proliferation (P < 0.0001 for both reagents) via the AKT pathway. However, the AKT pathway was not involved in the expression of DSPP induced by Biodentine and MTA. CONCLUSION Biodentine and MTA enhanced the proliferation, adhesion and differentiation of LPS-induced DPCs. The proliferation and adhesion process induced by Biodentine and MTA was via the AKT pathway. However, the cellular differentiation process might not use the same pathway, and this needs to be explored in future studies.
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Affiliation(s)
- M C Wang
- Department of Dentistry, National Yang Ming Chiao Tung University, Taipei, Taiwan.,Department of Stomatology, Taipei Veterans General Hospital, Taipei, Taiwan.,Division of Dentistry, Heping Fuyou Branch, Taipei City Hospital, Taipei, Taiwan.,Taipei Municipal WanFang Hospital, Taipei, Taiwan
| | - H F Tu
- Department of Dentistry, National Yang Ming Chiao Tung University, Taipei, Taiwan.,Department of Dentistry, National Yang Ming Chiao Tung University Hospital, Yilan, Taiwan
| | - K W Chang
- Department of Dentistry, National Yang Ming Chiao Tung University, Taipei, Taiwan.,Department of Stomatology, Taipei Veterans General Hospital, Taipei, Taiwan.,Institute of Oral Biology, School of Dentistry, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - S C Lin
- Department of Dentistry, National Yang Ming Chiao Tung University, Taipei, Taiwan.,Department of Stomatology, Taipei Veterans General Hospital, Taipei, Taiwan.,Institute of Oral Biology, School of Dentistry, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - L Y Yeh
- Institute of Oral Biology, School of Dentistry, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - P S Hung
- Institute of Oral Biology, School of Dentistry, National Yang Ming Chiao Tung University, Taipei, Taiwan.,Department of Medical Research, National Yang Ming Chiao Tung University Hospital, Yilan, Taiwan
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Yeh LY, Yang CC, Wu HL, Kao SY, Liu CJ, Chen YF, Lin SC, Chang KW. The miR-372-ZBTB7A Oncogenic Axis Suppresses TRAIL-R2 Associated Drug Sensitivity in Oral Carcinoma. Front Oncol 2020; 10:47. [PMID: 32083004 PMCID: PMC7005910 DOI: 10.3389/fonc.2020.00047] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Accepted: 01/10/2020] [Indexed: 01/31/2023] Open
Abstract
miR-372 has been shown a potent oncogenic miRNA in the pathogenesis of oral squamous cell carcinoma (OSCC). The zinc finger and BTB domain containing 7A protein (ZBTB7A) is a transcriptional regulator that is involved in a great diversity of physiological and oncogenic regulation. However, the modulation of ZBTB7A in OSCC remains unclear. Tissue analysis identifies a reverse correlation in expression between miR-372 and ZBTB7A in OSCC tumors. When OSCC cells have stable knockdown of ZBTB7A, their oncogenic potential and drug resistance is increased. By way of contrast, such an increase is attenuated by expression of ZBTB7A. Screening and validation confirms that ZBTB7A is able to modulate expression of the death receptors TRAIL-R1, TRAIL-R2, Fas and p53 phosphorylated at serine-15. In addition, ZBTB7A transactivates TRAIL-R2, which sensitizes cells to cisplatin-induced apoptosis. The ZBTB7A-TRAIL-R2 cascade is involved in both the extrinsic and intrinsic cisplatin-induced pathways of apoptosis. Database analysis indicates that the expression level of and the copy status of ZBTB7A and TRAIL-R2 are important survival predictors for head and neck cancers. Collectively, this study indicates the importance of the miR-372-ZBTB7A-TRAIL-R2 axis in mediating OSCC pathogenesis and in controlling OSCC drug resistance. Therefore, silencing miR-372 and/or upregulating ZBTB7A would seem to be promising strategies for enhancing the sensitivity of OSCC to cisplatin therapy.
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Affiliation(s)
- Li-Yin Yeh
- Department of Dentistry, School of Dentistry, Institute of Oral Biology, National Yang-Ming University, Taipei, Taiwan
| | - Cheng-Chieh Yang
- Department of Dentistry, School of Dentistry, Institute of Oral Biology, National Yang-Ming University, Taipei, Taiwan.,Department of Dentistry, National Yang-Ming University, Taipei, Taiwan.,Department of Stomatology, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Hsiao-Li Wu
- Department of Dentistry, School of Dentistry, Institute of Oral Biology, National Yang-Ming University, Taipei, Taiwan
| | - Shou-Yen Kao
- Department of Dentistry, National Yang-Ming University, Taipei, Taiwan.,Department of Stomatology, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Chung-Ji Liu
- Department of Dentistry, National Yang-Ming University, Taipei, Taiwan.,Department of Dentistry, MacKay Memorial Hospital, Taipei, Taiwan
| | - Yi-Fen Chen
- Department of Dentistry, School of Dentistry, Institute of Oral Biology, National Yang-Ming University, Taipei, Taiwan
| | - Shu-Chun Lin
- Department of Dentistry, School of Dentistry, Institute of Oral Biology, National Yang-Ming University, Taipei, Taiwan.,Department of Dentistry, National Yang-Ming University, Taipei, Taiwan.,Department of Stomatology, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Kuo-Wei Chang
- Department of Dentistry, School of Dentistry, Institute of Oral Biology, National Yang-Ming University, Taipei, Taiwan.,Department of Dentistry, National Yang-Ming University, Taipei, Taiwan.,Department of Stomatology, Taipei Veterans General Hospital, Taipei, Taiwan
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