Promoter DNA Methylation and mRNA Expression Level of p16 Gene in Oral Squamous Cell Carcinoma: Correlation with Clinicopathological Characteristics

The aim of this study was to investigate the relationship between p16 methylation and its expression in oral squamous cell carcinoma (OSCC). Also the contribution of clinicopathological factors, HPV infection and smoking in p16 expression and promoter methylation has been investigated. In this study...

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Veröffentlicht in:Pathology oncology research 2019-10, Vol.25 (4), p.1535-1543
Hauptverfasser: Allameh, Abdolamir, Moazeni-Roodi, Abdolkarim, Harirchi, Iraj, Ravanshad, Mehrdad, Motiee-Langroudi, Maziar, Garajei, Ata, Hamidavi, Azin, Mesbah-Namin, Seyed Alireza
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container_issue 4
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container_title Pathology oncology research
container_volume 25
creator Allameh, Abdolamir
Moazeni-Roodi, Abdolkarim
Harirchi, Iraj
Ravanshad, Mehrdad
Motiee-Langroudi, Maziar
Garajei, Ata
Hamidavi, Azin
Mesbah-Namin, Seyed Alireza
description The aim of this study was to investigate the relationship between p16 methylation and its expression in oral squamous cell carcinoma (OSCC). Also the contribution of clinicopathological factors, HPV infection and smoking in p16 expression and promoter methylation has been investigated. In this study 67 consecutive OSCC patients and 59 normal individuals were enrolled. All patients were candidates for surgery of oral cavity and fresh tumor biopsies were collected and processed for DNA and RNA extraction. Normal gingival tissues were collected from individuals referred to dentistry clinic and considered as controls. All the cases and controls were checked for HPV infection and then promoter methylation and expression of p16 gene were determined using Methylation-specific PCR (MSP) and real-time PCR (QPCR), respectively. Methylation of p16 in tumors and normal tissues were 59.7 and 38.9%, respectively. Most of hypermethylated samples (>82%) were in high grades. P16 methylation was comparable in HPV+ and HPV- patients or smokers. P16 was overexpressed (~3 fold; p  = 0.044) in HPV+ tumors, but it was significantly down-regulated in smoker patients (40% of all tumors). Comparison of P16 expression in OSCC tumors with different degrees of promoter methylation further suggest the relationship of methylation rate and down-regulation of P16 expression. The p16 methylation and expression was differentially affected in patients with HPV infection and the smoker cases. Regardless of the influence of environmental factors, it appears that P16 status is useful for classifying patients with OSCC and for influencing treatment strategies in accordance with this classification. Moreover, targeting the upregulation of p16 could be a promising therapeutic option.
doi_str_mv 10.1007/s12253-018-0542-1
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Oncol. Res</addtitle><addtitle>Pathol Oncol Res</addtitle><description>The aim of this study was to investigate the relationship between p16 methylation and its expression in oral squamous cell carcinoma (OSCC). Also the contribution of clinicopathological factors, HPV infection and smoking in p16 expression and promoter methylation has been investigated. In this study 67 consecutive OSCC patients and 59 normal individuals were enrolled. All patients were candidates for surgery of oral cavity and fresh tumor biopsies were collected and processed for DNA and RNA extraction. Normal gingival tissues were collected from individuals referred to dentistry clinic and considered as controls. All the cases and controls were checked for HPV infection and then promoter methylation and expression of p16 gene were determined using Methylation-specific PCR (MSP) and real-time PCR (QPCR), respectively. Methylation of p16 in tumors and normal tissues were 59.7 and 38.9%, respectively. Most of hypermethylated samples (&gt;82%) were in high grades. P16 methylation was comparable in HPV+ and HPV- patients or smokers. P16 was overexpressed (~3 fold; p  = 0.044) in HPV+ tumors, but it was significantly down-regulated in smoker patients (40% of all tumors). Comparison of P16 expression in OSCC tumors with different degrees of promoter methylation further suggest the relationship of methylation rate and down-regulation of P16 expression. The p16 methylation and expression was differentially affected in patients with HPV infection and the smoker cases. Regardless of the influence of environmental factors, it appears that P16 status is useful for classifying patients with OSCC and for influencing treatment strategies in accordance with this classification. 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Moazeni-Roodi, Abdolkarim ; Harirchi, Iraj ; Ravanshad, Mehrdad ; Motiee-Langroudi, Maziar ; Garajei, Ata ; Hamidavi, Azin ; Mesbah-Namin, Seyed Alireza</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c400t-7d868cf88a0dd7dc8b2913edfd7ae38f0b896280c1801d38148a9d181ea09a833</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2019</creationdate><topic>Adult</topic><topic>Aged</topic><topic>Biomarkers, Tumor - genetics</topic><topic>Biomarkers, Tumor - metabolism</topic><topic>Biomedical and Life Sciences</topic><topic>Biomedicine</topic><topic>Cancer Research</topic><topic>Carcinoma, Squamous Cell - genetics</topic><topic>Carcinoma, Squamous Cell - metabolism</topic><topic>Carcinoma, Squamous Cell - pathology</topic><topic>Carcinoma, Squamous Cell - virology</topic><topic>Case-Control Studies</topic><topic>Cyclin-Dependent Kinase Inhibitor p16 - genetics</topic><topic>Cyclin-Dependent Kinase Inhibitor p16 - metabolism</topic><topic>Dentistry</topic><topic>Deoxyribonucleic acid</topic><topic>DNA</topic><topic>DNA Methylation</topic><topic>Environmental factors</topic><topic>Female</topic><topic>Follow-Up Studies</topic><topic>Gene expression</topic><topic>Gene Expression Regulation, Neoplastic</topic><topic>Human papillomavirus</topic><topic>Humans</topic><topic>Immunology</topic><topic>Infections</topic><topic>Male</topic><topic>Middle Aged</topic><topic>Mouth Neoplasms - genetics</topic><topic>Mouth Neoplasms - metabolism</topic><topic>Mouth Neoplasms - pathology</topic><topic>Oncology</topic><topic>Oral cancer</topic><topic>Oral cavity</topic><topic>Oral squamous cell carcinoma</topic><topic>Original Article</topic><topic>p16 Protein</topic><topic>Papillomaviridae - isolation &amp; purification</topic><topic>Papillomavirus Infections - complications</topic><topic>Papillomavirus Infections - virology</topic><topic>Pathology</topic><topic>Patients</topic><topic>Polymerase chain reaction</topic><topic>Prognosis</topic><topic>Promoter Regions, Genetic</topic><topic>Smoking</topic><topic>Squamous cell carcinoma</topic><topic>Surgery</topic><topic>Tissues</topic><topic>Tumors</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Allameh, Abdolamir</creatorcontrib><creatorcontrib>Moazeni-Roodi, Abdolkarim</creatorcontrib><creatorcontrib>Harirchi, Iraj</creatorcontrib><creatorcontrib>Ravanshad, Mehrdad</creatorcontrib><creatorcontrib>Motiee-Langroudi, Maziar</creatorcontrib><creatorcontrib>Garajei, Ata</creatorcontrib><creatorcontrib>Hamidavi, Azin</creatorcontrib><creatorcontrib>Mesbah-Namin, Seyed Alireza</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>ProQuest Central (Corporate)</collection><collection>Nursing &amp; 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Oncol. Res</stitle><addtitle>Pathol Oncol Res</addtitle><date>2019-10-01</date><risdate>2019</risdate><volume>25</volume><issue>4</issue><spage>1535</spage><epage>1543</epage><pages>1535-1543</pages><issn>1219-4956</issn><eissn>1532-2807</eissn><abstract>The aim of this study was to investigate the relationship between p16 methylation and its expression in oral squamous cell carcinoma (OSCC). Also the contribution of clinicopathological factors, HPV infection and smoking in p16 expression and promoter methylation has been investigated. In this study 67 consecutive OSCC patients and 59 normal individuals were enrolled. All patients were candidates for surgery of oral cavity and fresh tumor biopsies were collected and processed for DNA and RNA extraction. Normal gingival tissues were collected from individuals referred to dentistry clinic and considered as controls. All the cases and controls were checked for HPV infection and then promoter methylation and expression of p16 gene were determined using Methylation-specific PCR (MSP) and real-time PCR (QPCR), respectively. Methylation of p16 in tumors and normal tissues were 59.7 and 38.9%, respectively. Most of hypermethylated samples (&gt;82%) were in high grades. P16 methylation was comparable in HPV+ and HPV- patients or smokers. P16 was overexpressed (~3 fold; p  = 0.044) in HPV+ tumors, but it was significantly down-regulated in smoker patients (40% of all tumors). Comparison of P16 expression in OSCC tumors with different degrees of promoter methylation further suggest the relationship of methylation rate and down-regulation of P16 expression. The p16 methylation and expression was differentially affected in patients with HPV infection and the smoker cases. Regardless of the influence of environmental factors, it appears that P16 status is useful for classifying patients with OSCC and for influencing treatment strategies in accordance with this classification. Moreover, targeting the upregulation of p16 could be a promising therapeutic option.</abstract><cop>Dordrecht</cop><pub>Springer Netherlands</pub><pmid>30511108</pmid><doi>10.1007/s12253-018-0542-1</doi><tpages>9</tpages></addata></record>
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subjects Adult
Aged
Biomarkers, Tumor - genetics
Biomarkers, Tumor - metabolism
Biomedical and Life Sciences
Biomedicine
Cancer Research
Carcinoma, Squamous Cell - genetics
Carcinoma, Squamous Cell - metabolism
Carcinoma, Squamous Cell - pathology
Carcinoma, Squamous Cell - virology
Case-Control Studies
Cyclin-Dependent Kinase Inhibitor p16 - genetics
Cyclin-Dependent Kinase Inhibitor p16 - metabolism
Dentistry
Deoxyribonucleic acid
DNA
DNA Methylation
Environmental factors
Female
Follow-Up Studies
Gene expression
Gene Expression Regulation, Neoplastic
Human papillomavirus
Humans
Immunology
Infections
Male
Middle Aged
Mouth Neoplasms - genetics
Mouth Neoplasms - metabolism
Mouth Neoplasms - pathology
Oncology
Oral cancer
Oral cavity
Oral squamous cell carcinoma
Original Article
p16 Protein
Papillomaviridae - isolation & purification
Papillomavirus Infections - complications
Papillomavirus Infections - virology
Pathology
Patients
Polymerase chain reaction
Prognosis
Promoter Regions, Genetic
Smoking
Squamous cell carcinoma
Surgery
Tissues
Tumors
title Promoter DNA Methylation and mRNA Expression Level of p16 Gene in Oral Squamous Cell Carcinoma: Correlation with Clinicopathological Characteristics
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