Salivary microRNAs in oral cancer
Date
2015
Journal Title
Journal ISSN
Volume Title
Type
Article
Publisher
Blackwell Publishing Ltd
Series Info
Oral Diseases
21
21
Scientific Journal Rankings
Abstract
Objective: This study investigated the use of three salivary microRNAs (miRNA-21, miRNA-184, and miRNA-145) as possible markers for malignant transformation in oral mucosal lesions. Materials and methods: Salivary whole unstimulated samples were collected from a study group of 100 subjects, consisting of 20 clinically healthy controls, 40 patients with oral potentially malignant disorders (PMDs) [20 with dysplastic lesions and 20 without dysplasia], 20 with biopsy-confirmed oral squamous cell carcinoma (OSCC), and 20 with recurrent aphthous stomatitis (RAS) as disease controls. Total RNA was isolated and purified from saliva samples using the microRNA Isolation Kit (Qiagen, UL). miRNA expression analysis was performed using qRT-PCR (Applied Biosystems). Results: There was a highly significant increase in salivary miRNA-21 and miRNA-184 in OSCC and PMD (with and without dysplasia) when compared to healthy and disease controls (P�<�0.001). Conversely, miRNA-145 levels showed a highly significant decrease in OSCC and PMD overall (P�<�0.001). RAS cases showed no significant difference from normal controls in any measured miRNA (P�>�0.05). The only microRNA to discriminate between OSCC and PMD with dysplasia was miRNA-184. When receiver operating characteristic curves were designed for the three miRNAs, cutoff points delineating the occurrence of malignant change were a fourfold increase in miRNA-21 with specificity 65% and sensitivity 65%, a 0.6 decrease in miRNA-145, with specificity 70% and sensitivity 60%, and a threefold increase of miRNA-184, with specificity 75% and sensitivity 80%. Calculating the area under the curve revealed that miRNA-184 was the only one among the studied miRNAs that provided good diagnostic value. Conclusion: Salivary determination of the miRNAs tested might furnish a noninvasive, rapid adjunctive aid for revealing malignant transformation in oral mucosal lesions, particularly miRNA-184. � 2015 John Wiley & Sons A/S.
Description
Scopus
Keywords
October University for Modern Sciences and Arts, جامعة أكتوبر للعلوم الحديثة والآداب, University of Modern Sciences and Arts, MSA University, MicroRNA, MiRNA salivary biomarkers, MiRNA-145, MiRNA-184, MiRNA-21, Oral cancer, Oral malignant transformation, Potentially malignant disorders, microRNA, microRNA 145, microRNA 184, microRNA 21, unclassified drug, microRNA, MIRN145 microRNA, human, MIRN184 microRNA, human, MIRN21 microRNA, human, tumor marker, adult, aged, aphthous stomatitis, Article, controlled study, dysplasia, female, human, major clinical study, male, malignant transformation, mouth cancer, mouth squamous cell carcinoma, oral biopsy, oral mucosal disease, priority journal, protein expression, saliva analysis, saliva level, Carcinoma, Squamous Cell, case control study, chemistry, genetics, middle aged, Mouth Neoplasms, pathology, precancer, receiver operating characteristic, saliva, Adult, Aged, Biomarkers, Tumor, Carcinoma, Squamous Cell, Case-Control Studies, Female, Humans, Male, MicroRNAs, Middle Aged, Mouth Neoplasms, Precancerous Conditions, ROC Curve, Saliva, Stomatitis, Aphthous