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do Amaral-Silva GK, Morais TMDL, Wagner VP, Martins MD, Fregnani ER, Soares FA, Rocha AC, Pontes HR, Santos-Silva AR, Vargas PA. Expression of DNMTs and H3K9ac in Ameloblastoma and Ameloblastic Carcinoma. FRONTIERS IN ORAL HEALTH 2022; 2:751162. [PMID: 35048062 PMCID: PMC8757744 DOI: 10.3389/froh.2021.751162] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2021] [Accepted: 09/14/2021] [Indexed: 12/13/2022] Open
Abstract
Objectives: DNA methyltransferases (DNMTs) and the histone modification H3K9ac are epigenetic markers. This study aimed to describe the immunohistochemical expression of DNMT1, DNMT3A, DNMT3B, and H3K9ac in the dental follicle (DF), ameloblastoma (AME), and ameloblastic carcinoma (AC), correlating these expressions with the recurrence and aggressive behavior in ameloblastoma. Study Design: Immunohistochemical reactions were performed in 10 human DFs, 38 ameloblastomas, and 6 AC samples. Another 59 ameloblastomas assembled in a tissue microarray were used to compare the immunoexpression with the clinical, radiographic, and histopathological characteristics and the presence of BRAFv600e mutation. Each slide was digitized as a high-resolution image and quantified by Aperio ScanScope Nuclear V9 software. All statistical analyzes were performed using GraphPad Prism statistical software. Results: DNMT3B expression was higher in ameloblastomas than in the DFs, while the AC overexpressed all proteins. The ameloblastomas with BRAFv600e mutation, vestibular/lingual, or vestibular/palatine bone cortical disruption and maxilla involvement showed DNMT1 overexpression, while recurrent cases had high DNMT3B levels. Conclusions: DNA methylation and histone modification might play a role in the development, clinical aggressiveness, and recurrence rates of ameloblastoma, such as the progression to AC. Further investigation about gene methylations in ameloblastomas is needed to better understand its relationship with aggressiveness and recurrence.
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Affiliation(s)
| | | | - Vivian Petersen Wagner
- Department of Oral Diagnosis, Piracicaba Dental School, University of Campinas, Piracicaba, Brazil
| | - Manoela Domingues Martins
- Department of Pathology, School of Dentistry, Federal University of Rio Grande do Sul, Porto Alegre, Brazil
| | | | | | - André Caroli Rocha
- Medical School, Clinics Hospital, University of São Paulo, São Paulo, Brazil
| | - Helder Rabelo Pontes
- Service of Buccal Pathology, João de Barros Barreto University Hospital, Federal University of Pará, Belém, Brazil
| | - Alan Roger Santos-Silva
- Department of Oral Diagnosis, Piracicaba Dental School, University of Campinas, Piracicaba, Brazil
| | - Pablo Agustin Vargas
- Department of Oral Diagnosis, Piracicaba Dental School, University of Campinas, Piracicaba, Brazil
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do Amaral-Silva GK, Pereira TDSF, Rocha AC, Mariz BALA, Prado-Ribeiro AC, Fonseca FP, Gomez RS, Vargas PA. DNA methylation status of MutS genes in ameloblastoma. Oral Dis 2021; 28:1901-1906. [PMID: 33901323 DOI: 10.1111/odi.13887] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2020] [Revised: 03/30/2021] [Accepted: 04/19/2021] [Indexed: 12/17/2022]
Abstract
OBJECTIVES Ameloblastoma is an odontogenic epithelial tumour with a low expression of mismatch repair system components. We aimed to investigate the methylation status of the genes MSH2, MSH3 and MSH6 (MutS group) in conventional ameloblastomas. MATERIALS AND METHODS The ameloblastoma and dental follicle samples (n = 10 each) were collected from 20 different patients. Each ameloblastoma sample was sectioned into two fragments: one was paraffin-embedded while the other one, likewise the dental follicle samples, was fixed in RNAlater and frozen at -196°C. All frozen samples were investigated for the MutS genes methylation levels, using the enzymatic restriction digestion and quantitative real-time PCR (qPCR) assay. The ameloblastoma paraffin-embedded samples were submitted to immunohistochemical reactions for MutS proteins detection and digitally quantification. Correlation analyses were performed between the immunohistochemical results and the respective gene methylation percentage. RESULTS There are no significant differences between the MutS genes methylation levels in the ameloblastoma and the dental follicle. However, a strong negative correlation was found between MSH2 and MSH6 gene methylation status and their respective proteins expressions evaluated by immunohistochemistry. CONCLUSION Our results show that the genes methylations is in part responsible for decreasing the expression of MSH2 and MSH6 genes in ameloblastoma.
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Affiliation(s)
| | | | - André Caroli Rocha
- Medical School, Clinics Hospital, University of São Paulo, São Paulo, Brazil
| | | | | | - Felipe Paiva Fonseca
- Department of Oral Surgery and Pathology, School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Ricardo Santiago Gomez
- Department of Oral Surgery and Pathology, School of Dentistry, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Pablo Agustin Vargas
- Department of Oral Diagnosis, Piracicaba Dental School, University of Campinas, Piracicaba, Brazil
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Santos ES, Rodrigues-Fernandes CI, Cabral JC, Fonseca FP, Leme AFP. Epigenetic alterations in ameloblastomas: A literature review. J Clin Exp Dent 2021; 13:e295-e302. [PMID: 33680332 PMCID: PMC7920560 DOI: 10.4317/jced.56191] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Accepted: 08/10/2020] [Indexed: 12/18/2022] Open
Abstract
Background Ameloblastoma is a locally aggressive tumor, originated from odontogenic epithelium, and affects the jawbones with an elevated recurrence rate. The molecular mechanisms involved with the pathogenesis of this tumor remain undetermined. This review aimed to describe the current data regarding epigenetic alterations in ameloblastoma. Material and Methods A systematized electronic search was performed in the English-language literature in three databases, combining the following keywords: ameloblastoma, epigenetic, methylation, noncoding RNA, histone acetylation. Results According to the gathered results of 11 studies in this review, epigenetic alterations could induce the development and progression of ameloblastoma. DNA methylation has been the most assessed mechanism in ameloblastomas. Conclusions Current literature data indicate that epigenetic events can be involved in the etiopathogenesis of ameloblastomas. Key words:Ameloblastoma, epigenetic, methylation, noncoding RNA, histone acetylation.
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Affiliation(s)
- Erison-Santana Santos
- Department of Oral Diagnosis, Piracicaba Dental School, University of Campinas, Piracicaba, Brazil
| | | | - Joab-Cabral Cabral
- Department of Oral Diagnosis, Piracicaba Dental School, University of Campinas, Piracicaba, Brazil
| | - Felipe-Paiva Fonseca
- Department of Oral Surgery and Pathology, School of Dentistry, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - Adriana-Franco-Paes Leme
- Brazilian Biosciences National Laboratory, The Brazilian Center for Research in Energy and Materials, Campinas, Brazil
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de França GM, Pinheiro JC, de Melo Fernandes Almeida DR, da Silva GG, de Lima KC, de Andrade Santos PP, Galvão HC. Analysis of Protein Immunoexpression and Its Interrelationship in the Pathogenesis of Odontomas and Ameloblastic Fibro-Odontomas: A Systematic Review. Head Neck Pathol 2021; 15:955-966. [PMID: 33394370 PMCID: PMC8384987 DOI: 10.1007/s12105-020-01260-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Accepted: 11/21/2020] [Indexed: 10/22/2022]
Abstract
Odontomas and ameloblastic fibro-odontomas (AFOs) are the result of a developmental anomaly of odontogenic tissues. A literature review of proteins immunoexpressed in odontomas and AFOs was conducted in order to determine which proteins are involved in the pathogenesis of these lesions. AFO was changed to early odontoma in the 2017 WHO classification and will also be discussed in this article. A literature search was performed in the following electronic databases: PubMed/MEDLINE, Web of Science, Scopus, EMBASE, Lilacs, Cochrane Collaboration Library, and Science Direct. The research question was developed according to the population, intervention, comparison, and outcome (PICO) framework: Which proteins are related to the differentiation of odontomas and what is their interrelationship with AFOs? Thirty articles met all inclusion criteria and were selected for this systematic review, totaling 355 cases of odontomas and 43 cases of AFO. Similar immunoexpression was observed in odontomas and AFOs. Immunoexpression of proteins involved in cell differentiation was higher in compound odontomas than in complex odontomas. Proteins involved in histodifferentiation and enamel formation were more frequent in odontomas. The immunoexpression of enamel matrix proteins differs between odontomas and tooth germs, with their persistence being related to the development of odontomas. Compound odontomas exhibit the highest immunoexpression of proteins involved in cellular histodifferentiation and the Wnt/beta-catenin pathway is involved in tumor formation.
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Affiliation(s)
- Glória Maria de França
- grid.411233.60000 0000 9687 399XPostgraduate Program in Dental Science, Department of Dentistry, Federal University of Rio Grande do Norte, Av. Senador Salgado Filho, 1787, Lagoa Nova, Natal, RN CEP 59056-000 Brazil
| | - Juliana Campos Pinheiro
- grid.411233.60000 0000 9687 399XPostgraduate Program in Dental Science, Department of Dentistry, Federal University of Rio Grande do Norte, Av. Senador Salgado Filho, 1787, Lagoa Nova, Natal, RN CEP 59056-000 Brazil
| | - Dennys Ramon de Melo Fernandes Almeida
- grid.411233.60000 0000 9687 399XPostgraduate Program in Dental Science, Department of Dentistry, Federal University of Rio Grande do Norte, Av. Senador Salgado Filho, 1787, Lagoa Nova, Natal, RN CEP 59056-000 Brazil
| | - Gabriel Gomes da Silva
- grid.411233.60000 0000 9687 399XDepartment of Dentistry, Federal University of Rio Grande do Norte, Natal, Brazil
| | - Kênio Costa de Lima
- grid.411233.60000 0000 9687 399XPostgraduate Program in Public Health, Department of Dentistry, Federal University of Rio Grande do Norte, Natal, Brazil
| | - Pedro Paulo de Andrade Santos
- grid.411233.60000 0000 9687 399XPostgraduate Program in Dental Science, Department of Dentistry, Federal University of Rio Grande do Norte, Av. Senador Salgado Filho, 1787, Lagoa Nova, Natal, RN CEP 59056-000 Brazil
| | - Hébel Cavalcanti Galvão
- grid.411233.60000 0000 9687 399XPostgraduate Program in Dental Science, Department of Dentistry, Federal University of Rio Grande do Norte, Av. Senador Salgado Filho, 1787, Lagoa Nova, Natal, RN CEP 59056-000 Brazil
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Pongpanich M, Sanguansin S, Kengkarn S, Chaiwongkot A, Klongnoi B, Kitkumthorn N. An integrative analysis of genome-wide methylation and expression in ameloblastoma: A pilot study. Oral Dis 2020; 27:1455-1467. [PMID: 33022811 DOI: 10.1111/odi.13666] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2019] [Revised: 08/31/2020] [Accepted: 09/26/2020] [Indexed: 11/30/2022]
Abstract
OBJECTIVE DNA methylation regulates the expression of various genes involved in tumorigenesis. Ameloblastoma is a benign odontogenic jaw tumor. It is locally aggressive with a high level of recurrence. A delay in treatment can lead to severe facial disfigurement. To the best of our knowledge, this is the first integrated analysis of DNA methylation and gene expression in ameloblastoma with the aim to identify genes that may be regulated by DNA methylation. MATERIALS AND METHODS We used an Infinium MethylationEPIC array to measure genome-wide methylation and the Illumina HiSeq platform to obtain gene expression data in ameloblastoma tissues from five patients and dental follicles from three healthy subjects. An integration analysis was performed using City of Hope CpG Island Analysis Pipeline software. RESULTS We identified 25,255 differentially methylated CpG sites and 17 differentially methylated CpG islands; six of the islands were negatively correlated with the expression of BAIAP2, DUSP6, FGFR2, FOXF2, NID2, and PAK6. Pyrosequencing and immunostaining techniques were further used to validate FGFR2, NID2, and PAK6. CONCLUSIONS This analysis identifies a group of novel genes that may be regulated by DNA methylation and will possibly lead to new insights into the pathology and invasion mechanism of ameloblastoma.
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Affiliation(s)
- Monnat Pongpanich
- Department of Mathematics and Computer Science, Faculty of Science, Chulalongkorn University, Bangkok, Thailand.,Omics Sciences and Bioinformatics Center, Faculty of Science, Chulalongkorn University, Bangkok, Thailand
| | - Sirima Sanguansin
- Department of Oral Biology, Faculty of Dentistry, Mahidol University, Bangkok, Thailand
| | - Sudaporn Kengkarn
- Faculty of Medical Technology, Rangsit University, Pathumthani, Thailand
| | - Arkom Chaiwongkot
- Applied Medical Virology Research Unit, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand.,Department of Microbiology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand
| | - Boworn Klongnoi
- Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Mahidol University, Bangkok, Thailand
| | - Nakarin Kitkumthorn
- Department of Oral Biology, Faculty of Dentistry, Mahidol University, Bangkok, Thailand
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6
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Sandoval-Basilio J, González-González R, Bologna-Molina R, Isiordia-Espinoza M, Leija-Montoya G, Alcaraz-Estrada SL, Serafín-Higuera I, González-Ramírez J, Serafín-Higuera N. Epigenetic mechanisms in odontogenic tumors: A literature review. Arch Oral Biol 2018; 87:211-217. [PMID: 29310033 DOI: 10.1016/j.archoralbio.2017.12.029] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2017] [Revised: 12/23/2017] [Accepted: 12/28/2017] [Indexed: 02/07/2023]
Abstract
OBJECTIVE Epigenetic mechanisms, such as DNA methylation, regulate important biological processes as gene expression and it was suggested that these phenomena play important roles in the carcinogenesis and tumor biology. The aim of this review is to provide the current state of knowledge about epigenetic alterations, focusing mainly on DNA methylation, reported in odontogenic tumors. DESIGN Literatures were searched based in the combination of the following keywords: odontogenic tumors, epigenetics, DNA methylation, histone modifications, non-coding RNA, microRNA, DNA methyltransferases. Electronic databases (Medline/PubMed, Scopus and Web of Science) were screened. RESULTS The analysis of epigenetic alterations in different tumors has rapidly increased; however, limited information is available about epigenetic mechanisms involved in the formation of odontogenic tumors. DNA methylation is the most studied epigenetic modification in these tumors and the participation of non-coding RNA's in odontogenic tumors has been recently addressed. Differential expression of DNA methyltransferases, altered DNA methylation patterns and aberrant expression of non-coding RNA's were reported in odontogenic tumors. CONCLUSIONS Current studies suggest epigenetics as an emerging mechanism, possibly implicated in etiopathogenesis of odontogenic tumors. Deeper understanding of the epigenetic abnormalities in these tumors could show potential applications as biomarkers or therapeutic possibilities in the future.
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Affiliation(s)
| | | | - Ronell Bologna-Molina
- Departamento de Investigación, Facultad Odontología, Universidad de la República. (UDELAR), Montevideo, Uruguay
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Costa SFS, Pereira NB, Pereira KMA, Campos K, de Castro WH, Diniz MG, Gomes CC, Gomez RS. DNA methylation pattern of apoptosis-related genes in ameloblastoma. Oral Dis 2017; 23:779-783. [DOI: 10.1111/odi.12661] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2016] [Revised: 02/08/2017] [Accepted: 02/24/2017] [Indexed: 02/07/2023]
Affiliation(s)
- SFS Costa
- Department of Oral Surgery and Pathology; School of Dentistry; Universidade Federal de Minas Gerais; Belo Horizonte Brazil
| | - NB Pereira
- Department of Oral Surgery and Pathology; School of Dentistry; Universidade Federal de Minas Gerais; Belo Horizonte Brazil
| | - KMA Pereira
- School of Dentistry; Universidade Federal do Ceará; Sobral Brazil
| | - K Campos
- Department of Oral Surgery and Pathology; School of Dentistry; Universidade Federal de Minas Gerais; Belo Horizonte Brazil
| | - WH de Castro
- Department of Oral Surgery and Pathology; School of Dentistry; Universidade Federal de Minas Gerais; Belo Horizonte Brazil
| | - MG Diniz
- Department of Oral Surgery and Pathology; School of Dentistry; Universidade Federal de Minas Gerais; Belo Horizonte Brazil
| | - CC Gomes
- Department of Pathology; Biological Sciences Institute; Universidade Federal de Minas Gerais; Belo Horizonte Brazil
| | - RS Gomez
- Department of Oral Surgery and Pathology; School of Dentistry; Universidade Federal de Minas Gerais; Belo Horizonte Brazil
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8
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Reichart PA, Philipsen HP, Khongkhunthian P, Sciubba JJ. Immunoprofile of the adenomatoid odontogenic tumor. Oral Dis 2016; 23:731-736. [DOI: 10.1111/odi.12572] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2016] [Revised: 08/04/2016] [Accepted: 08/12/2016] [Indexed: 01/01/2023]
Affiliation(s)
- PA Reichart
- Department of Oral Medicine, Dental Radiology and Oral Surgery, CC03; Charité-Universitaetsmedizin Berlin; Berlin Germany
| | | | - P Khongkhunthian
- Faculty of Dentistry; Center of Excellence for Dental Implantology; Chiang Mai University; Chiang Mai Thailand
| | - JJ Sciubba
- The Milton J. Dance Head and Neck Center; The Greater Baltimore Medical Center; Baltimore USA
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