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Suppression of osteoclastogenesis signalling pathways and attenuation of ameloblastic osteolysis induced by local administration of CaP-bisphosphonate and CaP-doxycycline cements: Review of the literature and therapeutic hypothesis. ADVANCES IN ORAL AND MAXILLOFACIAL SURGERY 2022. [DOI: 10.1016/j.adoms.2021.100241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Silva BS, Silva LR, Lima KL, Dos Santos AC, Oliveira AC, Dezzen-Gomide AC, Batista AC, Yamamoto-Silva FP. SOX2 and BCL-2 Expressions in Odontogenic Keratocyst and Ameloblastoma. Med Oral Patol Oral Cir Bucal 2020; 25:e283-e290. [PMID: 31967981 PMCID: PMC7103439 DOI: 10.4317/medoral.23348] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Accepted: 12/09/2019] [Indexed: 12/23/2022] Open
Abstract
Background The purpose of this experimental study was to compare the immunohistochemical expression of SOX2 and BCL-2 in Odontogenic Keratocyst (OKC) and Ameloblastoma (AB) specimens, and to identify a possible correlation in their expression.
Material and Methods Immunohistochemical analysis was performed to evaluate SOX2 and BCL-2 expression in OKC (n = 20) and AB (n = 20). The immunoexpression was analyzed by a quantitative and qualitative scoring system. The comparison between the immunoexpression of SOX 2 and BCL-2 was assessed by the Mann-Whitney U-test. Spearman’s correlation coefficient evaluated the correlation between SOX2 and BCL-2 expressions.
Results SOX2 and BCL-2 expression was observed in all specimens of OKC in the full thickness of the epithelium lining. SOX2 immunostaining was higher in OKC, in comparison with AB samples (P<0.05). BCL-2 immunostaining between OKC and AB was not statistically significant. There was no significant correlation between SOX2 and BCL-2 in OKC and AB specimens.
Conclusions SOX2 and BCL-2 expressions in OKC may suggest their relationship with the biological behavior of this lesion, and the higher expression of SOX2 might be an upstream influence on the Hh signaling pathway. Key words:Odontogenic keratocyst; Ameloblastoma; Odontogenic tumor; SOX2; BCL-2.
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Affiliation(s)
- B-S Silva
- University of Anápolis, Department of Oral Diagnosis Av. Universitária, km 3,5. Cidade Universitária CEP 75083-515, Anápolis, Brasil
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Yang SB, Pang BX, Xue J, Yuan RT. Epigallocatechin-3-gallate inhibits proliferation and induces apoptosis in odontogenic keratocyst keratinocytes. Oral Dis 2019; 25:1175-1184. [PMID: 30811745 DOI: 10.1111/odi.13073] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2018] [Revised: 02/12/2019] [Accepted: 02/22/2019] [Indexed: 11/27/2022]
Abstract
OBJECTIVE The aim of this study was to investigate the effects of epigallocatechin-3-gallate on the proliferation and apoptosis of odontogenic keratocyst (OKC) keratinocytes in vitro. MATERIALS AND METHODS Keratinocytes isolated from the epithelial lining of the OKC were cultured in keratinocyte serum-free medium and identified by CK10, CK14, pan-cytokeratin and vimentin immunofluorescence staining. The cells were exposed to EGCG at different concentrations, and proliferation inhibition was measured by cell counting kit 8 assay. Cell cycle and apoptosis were assessed by flow cytometry, and expression of the WNT signalling pathway-related proteins FZD3 and JNK3 was detected by quantitative real-time PCR and Western blotting. Human oral keratinocytes (HOKs) were used as the control. RESULTS The OKC keratinocytes were successfully cultured. The primary cells were tile-like and expressed the epithelial biomarkers CK10, CK14 and pan-cytokeratin. Epigallocatechin-3-gallate inhibited cell proliferation in a dose- and time-dependent manner, arrested cell cycle in the G1 phase and induced apoptosis of OKC keratinocytes. FZD3 and JNK3 were overexpressed in OKC keratinocytes compared with HOKs and were downregulated by epigallocatechin-3-gallate treatment. CONCLUSION Epigallocatechin-3-gallate inhibited proliferation and induced apoptosis in OKC keratinocytes, possibly by suppressing the WNT/JNK signalling pathway. It may thus be potentially used for OKC treatment.
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Affiliation(s)
- Shao-Bin Yang
- School of Stomatology, Qingdao University, Qingdao, China.,Center of Oral Medicine, Qingdao Municipal Hospital, Qingdao, China
| | - Bao-Xing Pang
- School of Stomatology, Qingdao University, Qingdao, China.,Department of Oral and Maxillofacial Surgery, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Jiao Xue
- School of Stomatology, Qingdao University, Qingdao, China.,Center of Oral Medicine, Qingdao Municipal Hospital, Qingdao, China
| | - Rong-Tao Yuan
- School of Stomatology, Qingdao University, Qingdao, China.,Center of Oral Medicine, Qingdao Municipal Hospital, Qingdao, China
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Zhao Q, Liu S. [High expression of MMP20 may be a potential prognostic factor for poor outcomes of patients with endometrial carcinoma]. NAN FANG YI KE DA XUE XUE BAO = JOURNAL OF SOUTHERN MEDICAL UNIVERSITY 2018; 38:1239-1244. [PMID: 30377136 DOI: 10.3969/j.issn.1673-4254.2018.10.14] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
OBJECTIVE To explore the expression of MMP20 in endometrial carcinoma and its clinical significance. METHODS Bioinformatics analysis was used to explore the correlation of MMP20 expression with the prognosis of the patients with endometrial carcinoma. We collected 21 pairs of fresh endometrial carcinoma and adjacent endometrial tissues to detect the expression of MMP20 mRNA using real-time PCR. We also examined MMP20 protein expressions in 134 paraffin-embedded endometrial carcinoma tissues and 34 paraffin-embedded endometrial tissues using immunohistochemistry. The correlation of MMP20 expression with the clinicopathological features and prognosis of the patients were analyzed. RESULTS Based on TCGA database analysis, the patients with endometrial carcinoma showing an increased MMP20 mRNA expression had a significantly poorer prognosis than those with a low MMP20 mRNA expression (P=0.00065). Real-time PCR analysis and immunohistochemistry confirmed the up-regulated expressions of MMP20 at both the mRNA (P=0.0062) and protein (P=0.005) levels in endometrial carcinoma tissues compared to the adjacent endometrial tissues. An elevated MMP20 protein expression was positively associated with FIGO stage of endometrial carcinoma (P=0.014) and inversely correlated with the survival time of the patients (P=0.019). The Cox regression model analysis showed that an increased MMP20 expression was an independent predictor of a poor prognosis of the patients with endometrial carcinoma (P=0.067). CONCLUSIONS High expression of MMP20 is a potential prognostic factor for poor outcomes of patients with endometrial carcinoma.
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Affiliation(s)
- Qian Zhao
- Department of Infection, Guiyang Maternal and Children's Healthcare Hospital, Guiyang 550003, China
| | - Shu Liu
- Department of Breast, Guiyang Maternal and Children's Healthcare Hospital, Guiyang 550003, China
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Diniz MG, Gomes CC, de Sousa SF, Xavier GM, Gomez RS. Oncogenic signalling pathways in benign odontogenic cysts and tumours. Oral Oncol 2017; 72:165-173. [DOI: 10.1016/j.oraloncology.2017.07.021] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2017] [Revised: 07/19/2017] [Accepted: 07/21/2017] [Indexed: 01/24/2023]
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Dutra SN, Pires FR, Armada L, Azevedo RS. Immunoexpression of Wnt/β-catenin signaling pathway proteins in ameloblastoma and calcifying cystic odontogenic tumor. J Clin Exp Dent 2017; 9:e136-e140. [PMID: 28149478 PMCID: PMC5268103 DOI: 10.4317/jced.53100] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2016] [Accepted: 08/07/2016] [Indexed: 12/13/2022] Open
Abstract
Background Wnt/β-catenin signaling pathway is essential for the beginning of odontogenesis and may be involved in the development and progression of some odontogenic tumors. Thus, the aim of this study was to comparatively evaluate the immunohistochemical expression of Wnt/β-catenin signaling pathway proteins in a series of AME and CCOT. Material and Methods Immunohistochemical reactions were performed using antibodies against Wnt1, Wnt5a and β-catenin in 17 cases of solid AME and 6 cases of CCOT. Results In the AME group, Wnt1 and Wnt5a were identified in the epithelium in most of the cases, and β-catenin was mainly identified in the cytoplasm of the tumoral cells. In the CCOT group, Wnt1 and Wnt5a were identified in the epithelium and in the ghost cells in almost all the cases, and β-catenin was mainly identified in the cytoplasm and in the nuclei of the tumoral cells. Conclusions These results contribute to support the importance of Wnt/β-catenin signaling pathway proteins in AME and CCOT tumorigenesis. The abnormal expression of cytoplasmic and/or nuclear β-catenin appears to contribute to the development of both AME and CCOT. In addition, it is possible that Wnt1 and Wnt5a expression in ghost cells can contribute to its histogenesis in CCOT. Key words:Ameloblastoma, β-catenin, calcifying cystic odontogenic tumor, immunohistochemistry, Wnt.
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Affiliation(s)
- Sabrina-Nogueira Dutra
- PhD, Oral Pathology, Piracicaba Dental School, State University of Campinas, Piracicaba/SP, Brazil
| | - Fábio-Ramôa Pires
- Professor, Oral Pathology, School of Dentistry, State University of Rio de Janeiro, Brazil; Professor, Post-graduate program in Dentistry, Estácio de Sá University, Rio de Janeiro/RJ, Brazil
| | - Luciana Armada
- Professor, Post-graduate program in Dentistry, Estácio de Sá University, Rio de Janeiro/RJ, Brazil
| | - Rebeca-Souza Azevedo
- Professor, Patologia Oral, Faculdade de Odontologia, Universidade Federal Fluminense, Nova Friburgo, Rio de Janeiro/RJ, Brazil
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Ohta K, Naruse T, Ishida Y, Shigeishi H, Nakagawa T, Fukui A, Nishi H, Sasaki K, Ogawa I, Takechi M. TNF-α-induced IL-6 and MMP-9 expression in immortalized ameloblastoma cell line established by hTERT. Oral Dis 2016; 23:199-209. [PMID: 27868311 DOI: 10.1111/odi.12594] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2015] [Revised: 09/27/2016] [Accepted: 10/04/2016] [Indexed: 11/30/2022]
Abstract
OBJECTIVE Ameloblastoma (AM) shows locally invasive behaviour. However, biological investigations regarding regulation of gene expression associated with AM pathological features are difficult to perform, because AM cells can be passaged for a few generations due to senescence. We report a newly established immortalized AM cell line, AMB cells, by transfection with human telomerase reverse transcriptase (hTERT). Furthermore, we examined whether TNF-α modulates bone resorption-related genes, IL-6 and MMP-9 in cooperation with TGF-β or IFN-γ. MATERIALS AND METHODS Following transfection of an hTERT expression vector into AM cells using a non-viral method, the effects of cytokines on the expressions of IL-6 and MMP-9 mRNA were examined using real-time PCR. TNF-α-induced NF-κB activity was examined by western blotting and transcription factor assays. RESULTS AMB cells continued to grow for more than 100 population doublings. Stimulation with TNF-α increased IL-6 and MMP-9 mRNA expressions, as well as NF-κB activation. Furthermore, TGF-β and IFN-γ dramatically increased TNF-α-mediated expressions of MMP-9 and IL-6 mRNA, respectively, while those responses were suppressed by NF-κB inhibitor. CONCLUSION We established an immortalized AM cell line by hTERT transfection. TNF-α-mediated regulation of MMP-9 and IL-6 via NF-κB may play an important role in the pathological behaviour of AMs, such as bone resorption.
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Affiliation(s)
- K Ohta
- Department of Oral and Maxillofacial Surgery, Division of Cervico-Gnathostmatology, Programs for Applied Biomedicine, Graduate School of Biomedical Sciences, Hiroshima University, Hiroshima, Japan
| | - T Naruse
- Department of Oral and Maxillofacial Surgery, Division of Cervico-Gnathostmatology, Programs for Applied Biomedicine, Graduate School of Biomedical Sciences, Hiroshima University, Hiroshima, Japan
| | - Y Ishida
- Department of Oral and Maxillofacial Surgery, Division of Cervico-Gnathostmatology, Programs for Applied Biomedicine, Graduate School of Biomedical Sciences, Hiroshima University, Hiroshima, Japan
| | - H Shigeishi
- Department of Oral and Maxillofacial Surgery, Division of Cervico-Gnathostmatology, Programs for Applied Biomedicine, Graduate School of Biomedical Sciences, Hiroshima University, Hiroshima, Japan
| | - T Nakagawa
- Department of Oral and Maxillofacial Surgery, Division of Cervico-Gnathostmatology, Programs for Applied Biomedicine, Graduate School of Biomedical Sciences, Hiroshima University, Hiroshima, Japan
| | - A Fukui
- Department of Oral and Maxillofacial Surgery, Division of Cervico-Gnathostmatology, Programs for Applied Biomedicine, Graduate School of Biomedical Sciences, Hiroshima University, Hiroshima, Japan
| | - H Nishi
- Department General Dentistry, Hiroshima University Hospital, Hiroshima, Japan
| | - K Sasaki
- Department of Oral and Maxillofacial Surgery, Division of Cervico-Gnathostmatology, Programs for Applied Biomedicine, Graduate School of Biomedical Sciences, Hiroshima University, Hiroshima, Japan
| | - I Ogawa
- Center of Oral Clinical Examination, Hiroshima University Hospital, Hiroshima, Japan
| | - M Takechi
- Department of Oral and Maxillofacial Surgery, Division of Cervico-Gnathostmatology, Programs for Applied Biomedicine, Graduate School of Biomedical Sciences, Hiroshima University, Hiroshima, Japan
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Abstract
Several molecular pathways have been shown to play critical roles in the pathogenesis of odontogenic tumors. These neoplasms arise from the epithelial or mesenchymal cells of the dental apparatus in the jaw or oral mucosa. Next generation genomic sequencing has identified gene mutations or single nucleotide polymorphisms associated with many of these tumors. In this review, we focus on two of the most common odontogenic tumor subtypes: ameloblastoma and keratocystic odontogenic tumors. We highlight gene expression and protein immunohistological findings and known genetic alterations in the hedgehog, BRAF/Ras/MAPK, epidermal growth factor receptor, Wnt and Akt signaling pathways relevant to these tumors. These various pathways are explored to potentially target odontogenic tumors cells and prevent growth and recurrence of disease. Through an understanding of these signaling pathways and their crosstalk, molecular diagnostics may emerge as well as the ability to exploit identified molecular differences to develop novel molecular therapeutics for the treatment of odontogenic tumors.
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