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Chatterjee S, Devi A, Kamboj M, Narwal A. Localization of beta catenin across the domain of odontogenic lesions: A systematic review. J Oral Pathol Med 2023; 52:904-910. [PMID: 37840228 DOI: 10.1111/jop.13487] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Revised: 08/30/2023] [Accepted: 09/13/2023] [Indexed: 10/17/2023]
Abstract
BACKGROUND CTNNB1 gene encodes beta catenin, a transcriptional activator of Wnt pathway involved in the pathogenesis of odontogenic lesions. Though located intramembranously, its translocation into cytoplasm and nucleus could trigger cell proliferation, inhibition of apoptosis, invasion and migration of the tumour cell. MATERIALS AND METHODS Five electronic databases including MEDLINE by PubMed, Google scholar, Scopus, Trip, Cochrane library and EMBASE until 1 January 2023 without period restriction were thoroughly searched. Those articles that identified CTNNB1 mutation and beta catenin in odontogenic lesions were included for review. Risk of bias was analysed for each study using QUADAS 2 tool and Review Manager 5.3 was used to output its result. RESULTS Thirty four published articles were included for data synthesis. A total of 1092 cases of odontogenic lesions were assessed for both CTNNB1 mutation and beta catenin expression. CTNNB1 mutation was observed in ameloblastoma, calcifying odontogenic cyst, calcifying cystic odontogenic tumour and all malignant odontogenic tumours. The beta catenin expression (nuclear and cytoplasmic) was maximum in odontogenic keratocyst and calcifying odontogenic cyst. The expression was variable in ameloblastomas, membranous in odontomas, calcifying cystic odontogenic tumour and nuclear in all malignant tumours. DISCUSSION AND CONCLUSION High recurrence of odontogenic keratocyst and aggressiveness of solid ameloblastoma and malignant odontogenic tumours could be associated with the nuclear translocation of beta catenin. Disparity between CTNNB1 mutation and beta catenin expression within odontogenic lesions suggests alternate routes of beta catenin activation. The review results support the unique localisation of beta catenin as a helpful diagnostic factor in the pathogenesis of odontogenic lesions.
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Affiliation(s)
- Shreya Chatterjee
- Department of Oral Pathology & Microbiology, Pt. B. D Sharma University of Health Sciences, Post Graduate Institute of Dental Sciences, Rohtak, Haryana, India
| | - Anju Devi
- Department of Oral Pathology & Microbiology, Pt. B. D Sharma University of Health Sciences, Post Graduate Institute of Dental Sciences, Rohtak, Haryana, India
| | - Mala Kamboj
- Department of Oral Pathology & Microbiology, Pt. B. D Sharma University of Health Sciences, Post Graduate Institute of Dental Sciences, Rohtak, Haryana, India
| | - Anjali Narwal
- Department of Oral Pathology & Microbiology, Pt. B. D Sharma University of Health Sciences, Post Graduate Institute of Dental Sciences, Rohtak, Haryana, India
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Molecular biology exploration and targeted therapy strategy of Ameloblastoma. Arch Oral Biol 2022; 140:105454. [DOI: 10.1016/j.archoralbio.2022.105454] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 05/09/2022] [Accepted: 05/10/2022] [Indexed: 11/19/2022]
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Expression of cytokeratin 14, cytokeratin 19 and E-Cadherin in ameloblastoma correlates with the cytodifferentiation of enamel organ. JOURNAL OF ORAL AND MAXILLOFACIAL SURGERY, MEDICINE, AND PATHOLOGY 2018. [DOI: 10.1016/j.ajoms.2017.12.003] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Carreón-Burciaga RG, González-González R, Molina-Frechero N, López-Verdín S, Pereira-Prado V, Bologna-Molina R. Differences in E-Cadherin and Syndecan-1 Expression in Different Types of Ameloblastomas. Anal Cell Pathol (Amst) 2018; 2018:9392632. [PMID: 29850393 PMCID: PMC5937611 DOI: 10.1155/2018/9392632] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2017] [Revised: 03/08/2018] [Accepted: 03/14/2018] [Indexed: 02/07/2023] Open
Abstract
Ameloblastomas are a group of benign, locally aggressive, recurrent tumors characterized by their slow and infiltrative growth. E-Cadherin and syndecan-1 are cell adhesion molecules related to the behavior of various tumors, including ameloblastomas. Ninety-nine ameloblastoma samples were studied; the expression of E-cadherin and syndecan-1 were evaluated by immunohistochemistry. E-Cadherin and epithelial syndecan-1 were more highly expressed in intraluminal/luminal unicystic ameloblastoma than in mural unicystic ameloblastoma and solid/multicystic ameloblastoma, whereas the stromal expression of syndecan-1 was higher in mural unicystic ameloblastoma and solid/multicystic ameloblastoma. Synchronicity was observed between E-cadherin and epithelial syndecan-1; the expression was correlated with intensity in all cases. There was a strong association between expression and tumor size and recurrence. The evaluation of the expression of E-cadherin and syndecan-1 are important for determining the potential aggressiveness of ameloblastoma variants. Future studies are required to understand how the expression of these markers is related to tumor aggressiveness.
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Affiliation(s)
- Ramón G. Carreón-Burciaga
- 1Department of Research, School of Dentistry, Juarez University of the State of Durango, Durango, DGO, Mexico
| | - Rogelio González-González
- 1Department of Research, School of Dentistry, Juarez University of the State of Durango, Durango, DGO, Mexico
| | - Nelly Molina-Frechero
- 2Department of Health Care, Xochimilco Unit, Autonomous Metropolitan University, Mexico City, Mexico
| | - Sandra López-Verdín
- 3Research Institute of Dentistry, Health Science Center, Guadalajara University, Guadalajara, JAL, Mexico
| | - Vanesa Pereira-Prado
- 4Molecular Pathology Area, School of Dentistry, University of the Republic, Montevideo, Uruguay
| | - Ronell Bologna-Molina
- 4Molecular Pathology Area, School of Dentistry, University of the Republic, Montevideo, Uruguay
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Martínez-Martínez M, Mosqueda-Taylor A, Carlos-Bregni R, Pires FR, Delgado-Azanero W, Neves-Silva R, Aldape-Barrios B, Paes-de Almeida O. Comparative histological and immunohistochemical study of ameloblastomas and ameloblastic carcinomas. Med Oral Patol Oral Cir Bucal 2017; 22:e324-e332. [PMID: 28390135 PMCID: PMC5432081 DOI: 10.4317/medoral.21901] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2017] [Accepted: 03/03/2017] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND This study aimed to compare the histological and immunohistochemical characteristics of ameloblastomas (AM) and ameloblastic carcinomas (AC). MATERIAL AND METHODS Fifteen cases of AM and 9 AC were submitted to hematoxilin and eosin (H&E) and immunohistochemical analysis with the following antibodies: cytokeratins 5,7,8,14 and 19, Ki-67, p53, p63 and the cellular adhesion molecules CD138 (Syndecan-1), E-cadherin and β-catenin. The mean score of the expression of Ki-67 and p53 labelling index (LIs) were compared between the groups using the t test. A value of p<0.05 was considered to be statistically significant. RESULTS All cases were positive for CKs 5, 14 and 19, but negative for CKs 7 and 8. CKs 5 and 19 were positive mainly in the central regions of the ameloblastic islands, while the expression in AC was variable in intensity and localization. CK14 was also variably expressed in both AM and AC. Ki-67 (P=.001) and p53 (P=.004) immunoexpression was higher in AC. All cases were positive for p63, but values were higher in AC. CD138 was mainly expressed in peripheral cells of AM, with a weak positivity in the central areas, while it was positive in most areas of ACs, except in less differentiated regions, where expression was decreased or lost. E-cadherin and β-catenin were weakly positive in both AM and AC. CONCLUSIONS These results shows that Ki-67, p53 and p63 expression was higher in AC as compared to AM, suggesting that these markers can be useful when considering diagnosis of malignancy, and perhaps could play a role in malignant transformation of AM. Pattern of expression of CKs 5 and 19 in AC were different to those found in AM, suggesting genetic alterations of these proteins in malignant cells. It was confirmed that CK19 is a good marker for benign odontogenic tumors, such as AM, but it is variably expressed in malignant cases.
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Affiliation(s)
- M Martínez-Martínez
- Piracicaba Dental School, University of Campinas (UNICAMP), Av. Limeira 901, P.O. Box 52, 13414-903 Piracicaba, São Paulo, Brazil,
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6
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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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Differential expression of the epithelial mesenchymal transition factors Snail, Slug, Twist, TGF-β, and E-cadherin in ameloblastoma. Med Mol Morphol 2016; 50:68-75. [PMID: 27995335 DOI: 10.1007/s00795-016-0149-0] [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: 09/09/2016] [Accepted: 11/20/2016] [Indexed: 02/07/2023]
Abstract
Epithelial mesenchymal transition (EMT), the transition of epithelial cells into motile mesenchymal cells, plays an important role in embryogenesis, cancer invasion, and metastasis. Ameloblastomas are common epithelial odontogenic tumors, occurring exclusively in the mandible with locally invasive growth. Thirty-seven ameloblastoma cases were evaluated for the involvement of EMT by immunohistochemical staining and western blotting using antibodies against Slug, Snail, Twist, TGF-β, and E-cadherin. Double immunostaining was also performed. Slug and TGF-β were expressed in the nuclei of peripheral and stellate reticulum cells of ameloblastoma nests. Twenty cases of Snail, 36 of Slug, 8 of Twist, and 19 of TGF-β showed strong expression in tumor cells in follicular and plexiform patterns. Expression of Slug and TGF-β increased in regions where the expression of E-cadherin was reduced. EMT was found to be associated with the local invasive growth of ameloblastoma. These data suggest that reduced expression of E-cadherin and over-expression of Slug, Snail, and TGF-β induce EMT. Given that ameloblastomas are characterized by local invasiveness, EMT might be related to their development. Thus, strong expression of Slug and TGF-β and reduced expression of E-cadherin might be related to the local invasiveness of ameloblastoma.
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Abstract
In continuation with the previous review on “β-catenin in health”, in this review we discuss the role of β-catenin in the pathogenesis of common oral lesions in the oral and maxillofacial region- oral potentially malignant disorders, their progression to oral squamous cell carcinoma, salivary gland tumors and odontogenic tumours. This review is based on a pubmed search of all the lesions included in the review.
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Affiliation(s)
- Sharada Prakash
- Department of Oral and Maxillofacial Pathology, AECS Maaruti College of Dental Sciences and Research Center, Bengaluru, Karnataka, India
| | - Uma Swaminathan
- Department of Oral and Maxillofacial Pathology, AECS Maaruti College of Dental Sciences and Research Center, Bengaluru, Karnataka, India
| | - B R Nagamalini
- Department of Oral and Maxillofacial Pathology, AECS Maaruti College of Dental Sciences and Research Center, Bengaluru, Karnataka, India
| | - Ashwini Balkuntla Krishnamurthy
- Department of Oral and Maxillofacial Pathology, AECS Maaruti College of Dental Sciences and Research Center, Bengaluru, Karnataka, India
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Andisheh-Tadbir A, Gorgizadeh A. CD166 expression in dentigerous cyst, keratocystic odontogenic tumor and ameloblastoma. J Clin Exp Dent 2016; 8:e236-40. [PMID: 27398171 PMCID: PMC4930630 DOI: 10.4317/jced.52381] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2015] [Accepted: 01/08/2016] [Indexed: 12/29/2022] Open
Abstract
Background CD166 is a glycoprotein of an immunoglobulin super family of adhesion molecules that has been associated with aggressive characteristics and high recurrence rate of tumors. Different odontogenic lesions exhibit considerable histological variation and different clinical behavior. In an attempt to clarify the mechanisms underlying this different behavior, the present study investigates the immunohistochemical expression of CD166 in these lesions. Material and Methods In this study 69 formalin-fixed, paraffin embedded tissue blocks of odontogenic lesion consist of 15 unicystic ameloblastoma (UA), 17 solid ameloblastoma (SA), 18 keratocystic odontogenic tumors (KCOT), and 19 dentigerous cysts (DC) were reviewed by immunohistochemistry for CD166 staining. Results In this study, CD166 immune staining was evident in all specimen groups except dentigerous cyst. In positive cases, protein localization was cytoplasmic and/or membranous. CD166 expression was seen in76.5% (13) of SA, 73.5% (11) of UA, and 66.7% (12) of KCOTs. Statistical analysis showed that CD166 expression levels were significantly higher in ameloblastoma (SA and UA) and KCOTs than dentigerous cyst (P
<0.001), but there was no statistically significant difference between CD166 expression in the other groups (P>0.05). Conclusions This data demonstrates that overexpression of CD166 may have a role in the pathogenesis of ameloblastoma and KCOT. Key words:CD166, ameloblastoma, dentigerous cyst, odontogenic keratocyst.
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Affiliation(s)
- Azadeh Andisheh-Tadbir
- Associate Professor. Prevention of Oral and Dental Disease Research Center, Department of Oral and Maxillofacial Pathology, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Ali Gorgizadeh
- Undergraduate Student. School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran
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10
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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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Abstract
β catenin belongs to the armadillo family of proteins. It plays a crucial role in developmental and homeostatic processes. Wnts are a family of 19 secreted glycoproteins that transduce multiple signaling cascades, including the canonical Wnt/β catenin pathway, Wnt/Ca(2+) pathway and the Wnt/polarity pathway. This is a review on β catenin, Wnt proteins and their secretion, the signaling pathway, the associated factors and the crucial role of β catenin in odontogenesis.
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Affiliation(s)
- Sharada Prakash
- Department of Oral and Maxillofacial Pathology, AECS Maaruti College of Dental Sciences, Bengaluru, Karnataka, India
| | - Uma Swaminathan
- Department of Oral and Maxillofacial Pathology, AECS Maaruti College of Dental Sciences, Bengaluru, Karnataka, India
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12
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Porto LPA, dos Santos JN, Ramalho LMP, Figueiredo AL, Carneiro Júnior B, Gurgel CA, Paiva KBS, Xavier FCA. E-cadherin regulators are differentially expressed in the epithelium and stroma of keratocystic odontogenic tumors. J Oral Pathol Med 2015; 45:302-11. [PMID: 26525778 DOI: 10.1111/jop.12382] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/30/2015] [Indexed: 12/12/2022]
Abstract
BACKGROUND The epithelial-mesenchymal transition (EMT) is the process where cells lose their epithelial features and acquire properties of typical mesenchymal cells. The dissociation of tumor cells due to changes in cell-cell adhesion is one of the key principles of tumor invasion and EMT. Thus, the knowledge of the molecular features of EMT in keratocyst odontogenic tumor (KOT) can provide useful markers to aid in the diagnosis and prognosis and perhaps contribute to an alternative therapeutic approach as it shows an aggressive clinical behavior and high recurrence rates. This study aimed to evaluate the EMT in KOT by the immunoexpression of E-cadherin, N-cadherin, Snail, and Slug and comparing to radicular cysts and dental follicles. METHODS Thirty-two KOTs, 15 radicular cysts, and 08 dental follicles were used for immunohistochemistry, evaluating the extent, intensity, labeling pattern, cellular compartment in the epithelium and stroma, and the presence of inflammation. RESULTS E-cadherin was preserved in most cases of keratocystic odontogenic tumor. N-cadherin was increased in the tumor epithelium, a result that was positively correlated with the heterogeneous and nuclear immunoexpression of Slug in the epithelium; Slug also correlated with high Snail immunoexpression. N-cadherin was positively correlated with Slug in the stroma of keratocystic odontogenic tumors. CONCLUSIONS The high immunoexpression of Snail and nuclear Slug in keratocystic odontogenic tumors suggests these proteins as transcription factors without necessarily participating in 'cadherin switching'. However, the knowledge of their induction of the epithelial-mesenchymal transition in odontogenic tumors is still limited.
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Affiliation(s)
- Lia Pontes Arruda Porto
- Pos-graduate Program of Dentistry and Health, School of Dentistry, Federal University of Bahia, Salvador, Brazil
| | - Jean Nunes dos Santos
- Surgical Pathology Laboratory, Department of Propaedeutics and Integrated Clinical Practicum, School of Dentistry, Federal University of Bahia, Salvador, Brazil
| | - Luciana Maria Pedreira Ramalho
- Department of Propaedeutics and Integrated Clinical Practicum, School of Dentistry, Federal University of Bahia, Salvador, Brazil
| | - Andreia Leal Figueiredo
- Department of Social and Pediatric Dentistry, School of Dentistry, Federal University of Bahia, Salvador, Brazil
| | - Bráulio Carneiro Júnior
- Pos-graduate Program of Dentistry and Health, School of Dentistry, Federal University of Bahia, Salvador, Brazil
| | - Clarissa Araújo Gurgel
- Department of Propaedeutics and Integrated Clinical Practicum, School of Dentistry, Federal University of Bahia, Salvador, Brazil
| | - Katiúcia Batista Silva Paiva
- Extracellular Matrix Biology and Cellular Interaction Laboratory, Department of Anatomy, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Flávia Caló Aquino Xavier
- Surgical Pathology Laboratory, Department of Propaedeutics and Integrated Clinical Practicum, School of Dentistry, Federal University of Bahia, Salvador, Brazil
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Andisheh-Tadbir A, Pardis S, Ranjbaran P. Twist expression in dentigerous cyst, odontogenic keratocyst, and ameloblastoma. Oral Maxillofac Surg 2015; 19:103-107. [PMID: 25088731 DOI: 10.1007/s10006-014-0459-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2014] [Accepted: 07/25/2014] [Indexed: 06/03/2023]
Abstract
Epithelial-mesenchymal transition (EMT) is a process which is associated with a loss of intercellular adhesion, acquired mesenchymal shape, and increased motility by epithelial cells. Twist is one of the key regulators of EMT.In view of the distinct clinical behavior of odontogenic lesions, the objective of the present study was to investigate the immunohistochemical expression of Twist in these lesions. In this study, 70 formalin-fixed, paraffin-embedded tissue blocks of odontogenic lesion consisting of 16 unicystic ameloblastomas (UA), 17 solid ameloblastomas (SA), 18 odontogenic keratocysts (OKC), and 19 dentigerous cysts (DC) were reviewed using immunohistochemistry for Twist staining. In this study, Twist immunostaining was evident in all groups of the specimens except the dentigerous cyst group. Twist expression was seen in 58.8 % (10/17) of SA, 50 % (8/16) of UA, and 44.4 % (8/18) of OKCs. 23.5 % of SA, 18.8 % of UA, and 16.7 % of OKCs showed Twist expression in more than 50 % of cells. Statistical analysis showed that Twist expression levels were significantly higher in ameloblastomas (SA and UA) and OKCs than dentigerous cysts (P = 0.002). There were no significant differences between Twist expression in SAs, UAs, and OKCs (P > 0.05). The results of this study propose that the high expression rate of Twist plays a role in the pathogenesis of ameloblastomas and OKCs and might be one of the reasons for the aggressive behavior of ameloblastomas and high recurrence of OKCs and could reinforce the classification of OKC as an odontogenic tumor.
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Affiliation(s)
- Azadeh Andisheh-Tadbir
- Department of Oral and Maxillofacial Pathology, School of Dentistry, Shiraz University of Medical Sciences, Shiraz, Iran,
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Martínez Martínez M, Romero CS, Piña AR, Palma Guzmán JM, de Almeida OP. Pigmented ameloblastic fibro-odontoma: clinical, histological, and immunohistochemical profile. Int J Surg Pathol 2014; 23:52-60. [PMID: 25339415 DOI: 10.1177/1066896914553663] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Ameloblastic fibro-odontoma (AFO) is a slow-growing, expansive, benign odontogenic tumor, composed of ameloblastic epithelium embedded in an ectomesenchymal stroma resembling dental papilla, containing hard dental tissue in variable degrees of maturation, including enamel, dentin, and sometimes cementum. AFO typically affects the posterior mandible, causing bony expansion. We report a case of pigmented AFO in a 5-year-old boy, comprising clinical and histological features illustrated by immunohistochemistry using a large panel of antibodies, polarized light microscopy and scanning electron microscopy.
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Siar CH, Ishak I, Ng KH. Podoplanin, E-cadherin, β-catenin, and CD44v6 in recurrent ameloblastoma: their distribution patterns and relevance. J Oral Pathol Med 2014; 44:51-8. [DOI: 10.1111/jop.12203] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/08/2014] [Indexed: 01/08/2023]
Affiliation(s)
- Chong Huat Siar
- Department of Oro-Maxillofacial Surgical and Medical Sciences; Faculty of Dentistry; University of Malaya; Kuala Lumpur Malaysia
| | - Ismadi Ishak
- Department of Oro-Maxillofacial Surgical and Medical Sciences; Faculty of Dentistry; University of Malaya; Kuala Lumpur Malaysia
| | - Kok Han Ng
- Formerly; Unit of Stomatology; Cancer Research Centre; Institute for Medical Research; Kuala Lumpur Malaysia
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Lei Y, Jaradat JM, Owosho A, Adebiyi KE, Lybrand KS, Neville BW, Müller S, Bilodeau EA. Evaluation of SOX2 as a potential marker for ameloblastic carcinoma. Oral Surg Oral Med Oral Pathol Oral Radiol 2014; 117:608-616.e1. [DOI: 10.1016/j.oooo.2014.01.017] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2013] [Revised: 01/05/2014] [Accepted: 01/09/2014] [Indexed: 12/20/2022]
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González-González R, Molina-Frechero N, Damian-Matsumura P, Bologna-Molina R. Molecular markers of cell adhesion in ameloblastomas. An update. Med Oral Patol Oral Cir Bucal 2014; 19:e8-e14. [PMID: 23986011 PMCID: PMC3909437 DOI: 10.4317/medoral.19071] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2013] [Accepted: 05/19/2013] [Indexed: 02/07/2023] Open
Abstract
Ameloblastoma is the most common odontogenic tumor of epithelial origin, and though it is of a benign nature, it frequently infiltrates the bone, has a high rate of recurrence and could potentially become malignant. Cellular adhesion potentially plays an important role in the manifestation of these characteristics and in the tumor biology of ameloblastomas. Losses of cell-cell and extracellular matrix adhesion and cohesion are among the first events that occur in the invasion and growth of tumors of epithelial origin. The present review includes a description of the molecules that are involved in cell adhesion as reported for various types of ameloblastomas and discusses the possible roles of these molecules in the biological behaviors of this odontogenic tumor. Knowledge of the complex mechanisms in which these molecules play a role is critical for the research and discovery of future therapeutic targets.
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Affiliation(s)
- Rogelio González-González
- Research Department, School of Dentistry, Universidad Juárez del Estado de Durango (UJED), Predio Canoas S n, 34000 Durango, México,
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Calcifying epithelial odontogenic tumor (CEOT): a clinicopathologic and immunohistochemical study and comparison with dental follicles containing CEOT-like areas. Oral Surg Oral Med Oral Pathol Oral Radiol 2013; 116:759-68. [DOI: 10.1016/j.oooo.2013.08.023] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2013] [Revised: 08/01/2013] [Accepted: 08/26/2013] [Indexed: 11/21/2022]
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Lee SK, Kim YS. Current concepts and occurrence of epithelial odontogenic tumors: I. Ameloblastoma and adenomatoid odontogenic tumor. KOREAN JOURNAL OF PATHOLOGY 2013; 47:191-202. [PMID: 23837011 PMCID: PMC3701814 DOI: 10.4132/koreanjpathol.2013.47.3.191] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/19/2013] [Accepted: 04/25/2013] [Indexed: 01/10/2023]
Abstract
Ameloblastomas and adenomatoid odontogenic tumors (AOTs) are common epithelial tumors of odontogenic origin. Ameloblastomas are clinico-pathologically classified into solid/multicystic, unicystic, desmoplastic, and peripheral types, and also divided into follicular, plexiform, acanthomatous, granular types, etc., based on their histological features. Craniopharyngiomas, derived from the remnants of Rathke's pouch or a misplaced enamel organ, are also comparable to the odontogenic tumors. The malignant transformation of ameloblastomas results in the formation of ameloblastic carcinomas and malignant ameloblastomas depending on cytological dysplasia and metastasis, respectively. AOTs are classified into follicular, extrafollicular, and peripheral types. Ameloblastomas are common, have an aggressive behavior and recurrent course, and are rarely metastatic, while AOTs are hamartomatous benign lesions derived from the complex system of the dental lamina or its remnants. With advances in the elucidation of molecular signaling mechanisms in cells, the cytodifferentiation of epithelial tumor cells in ameloblastomas and AOTs can be identified using different biomarkers. Therefore, it is suggested that comprehensive pathological observation including molecular genetic information can provide a more reliable differential diagnosis for the propagation and prognosis of ameloblastomas and AOTs. This study aimed to review the current concepts of ameloblastomas and AOTs and to discuss their clinico-pathological features relevant to tumorigenesis and prognosis.
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Affiliation(s)
- Suk Keun Lee
- Department of Oral Pathology, College of Dentistry, Gangneung-Wonju National University, Gangneung, Korea
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Sathi GA, Tsujigiwa H, Ito S, Siar CH, Katase N, Tamamura R, Harada H, Nagatsuka H. Osteogenic genes related to the canonic WNT pathway are down-regulated in ameloblastoma. Oral Surg Oral Med Oral Pathol Oral Radiol 2013; 114:771-7. [PMID: 23159115 DOI: 10.1016/j.oooo.2012.08.453] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2012] [Revised: 08/11/2012] [Accepted: 08/28/2012] [Indexed: 11/26/2022]
Abstract
OBJECTIVE The aim of this study was to determine the expression of essential osteogenic genes related to the canonic WNT pathway, i.e., WDR5, sFRP-2, and their downstream genes, in ameloblastoma and to clarify their biologic impact on this neoplasm. STUDY DESIGN Forty-six paraffin-embedded ameloblastoma samples and ameloblastic (AM-1) and preosteoblastic (KUSA/A1) cell lines were used. Immunohistochemistry, Western blot, reverse-transcription polymerase chain reaction, and alkaline phosphatase (ALP) activity assay were performed. RESULTS WDR5, essential for osteoblast differentiation and canonic WNT pathway activation, was negative in most ameloblastoma cases and weakly expressed in AM-1 cells. Conversely, sFRP-2s was overexpressed. RUNX2 and C-MYC, downstream inductions of canonic WNT pathway activation, demonstrated weak mRNA expressions in ameloblastoma, suggesting WNT pathway impairment and WDR5 functional inactivity. Recombinant WDR5 weakly induced ALP activity of KUSA/A1 cells cultured in AM-1 conditioned medium. CONCLUSIONS These findings suggest that WNT-related bone-forming genes are down-regulated in ameloblastoma. Concurrent sFRP-2 overexpression suggests that both bone-forming and bone-inhibiting genes equally contributed to reduced bone formation in this neoplasm.
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Affiliation(s)
- Gulsan A Sathi
- Department of Oral Pathology and Medicine, Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences, Okayama University, Okayama, Japan
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Kibe T, Fuchigami T, Kishida M, Iijima M, Ishihata K, Hijioka H, Miyawaki A, Semba I, Nakamura N, Kiyono T, Kishida S. A novel ameloblastoma cell line (AM-3) secretes MMP-9 in response to Wnt-3a and induces osteoclastogenesis. Oral Surg Oral Med Oral Pathol Oral Radiol 2013; 115:780-8. [DOI: 10.1016/j.oooo.2013.03.005] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2012] [Revised: 02/28/2013] [Accepted: 03/07/2013] [Indexed: 11/17/2022]
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Huat Siar C, Ng KH. Differential expression of transcription factors Snail, Slug, SIP1, and Twist in ameloblastoma. J Oral Pathol Med 2013; 43:45-52. [DOI: 10.1111/jop.12065] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/07/2013] [Indexed: 12/23/2022]
Affiliation(s)
- Chong Huat Siar
- Department of Oral Pathology; Oral Medicine and Periodontology; Faculty of Dentistry; University of Malaya; Kuala Lumpur Malaysia
| | - Kok Han Ng
- Formerly Unit of Stomatology; Cancer Research Centre; Institute for Medical Research; Kuala Lumpur Malaysia
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Mello LA, Figueiredo AL, Ramos EAG, Gurgel CAS, Martins MD, de Figueiredo CRLV, Cury PR, de Albuquerque Júnior RLC, Ramalho LMP, Santos JND. CD1a-positive Langerhans cells and their relationship with E-cadherin in ameloblastomas and keratocystic odontogenic tumors. J Oral Pathol Med 2012; 42:454-61. [PMID: 23278770 DOI: 10.1111/jop.12033] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/17/2012] [Indexed: 11/30/2022]
Abstract
BACKGROUND Ameloblastomas and keratocystic odontogenic tumors (KOTs) are lesions that are characterized by locally invasive growth and cause extensive bone destruction. In addition, it is known that E-cadherin influences the adhesion of Langerhans cells (LCs) to keratinocytes. OBJECTIVE AND METHODS The aim of this study was to investigate, using immunohistochemistry, the distribution of CD1a-positive cells in ameloblastomas and KOTs and their relationship with E-cadherin, in comparison to calcifying cystic odontogenic tumor (CCOT). RESULTS The CD1a-positive LCs were observed in 11 ameloblastomas and KOTs. All of the cases of CCOT showed CD1a-positive LCs and a significant difference was found when this tumor was compared with ameloblastomas (P < 0.05, Mann-Whitney test). A statistically significant difference was also noted when comparing CD1a-positive LCs between CCOTs and KOTs (P < 0.05, Mann-Whitney test). Lower expression of E-cadherin in ameloblastomas (AMs) in relation to KOTs and CCOTs (P < 0.05, Fisher test) was observed. There was no correlation between E-cadherin and CD1a-positive LCs between all odontogenic tumors that were studied (P > 0.05, Spearman test). CONCLUSION A quantitative difference of CD1a-positive cells between AMs and KOTs in comparison to CCOTs was observed. This permits to speculate that a depletion of CD1a-positive LCs might influence the local invasiveness of ameloblastomas and KOTs. Furthermore, it is suggested that E-cadherin mediates cell adhesion in these tumors.
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Affiliation(s)
- Leonardo Araújo Mello
- Laboratory of Oral Surgical Pathology, Department of Oral Pathology, School of Dentistry, Federal University of Bahia, Salvador, Bahia, Brazil
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Said F, Ghoul-Mazgar S, Khemiss F, El Ayeb H, Saidane D, Berdal A, Ruhin-Poncet B. The Effect of Etidronate on the Periodontium of Ovariectomized Rats. J Periodontol 2012; 83:1063-8. [DOI: 10.1902/jop.2011.110242] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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25
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Siar CH, Nagatsuka H, Han PP, Buery RR, Tsujigiwa H, Nakano K, Ng KH, Kawakami T. Differential expression of canonical and non-canonical Wnt ligands in ameloblastoma. J Oral Pathol Med 2011; 41:332-9. [PMID: 22077561 DOI: 10.1111/j.1600-0714.2011.01104.x] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Chong Huat Siar
- Department of Oral Pathology, Oral Medicine & Periodontology, Faculty of Dentistry, University of Malaya, Kuala Lumpur, Malaysia.
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