Whole genome DNA methylation profiling of oral cancer in ethnic population of Meghalaya,North East India reveals novel genes |
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| Authors: | Shngainlang Khongsti Frederick A. Lamare Neizekhotuo Brian Shunyu Sahana Ghosh Arindam Maitra Srimoyee Ghosh |
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| Affiliation: | 1. Department of Zoology, North Eastern Hill University (NEHU), Shillong, India;2. Department of Otorhinolaryngology (ENT), North Eastern Indira Gandhi Regional Institute of Health and Medical Sciences (NEIGRIHMS), Shillong, India;3. National Institute of Biomedical Genomics (NIBMG), Kalyani, West Bengal, India |
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| Abstract: | Oral Squamous Cell Carcinoma (OSCC) is a serious and one of the most common and highly aggressive malignancies. Epigenetic factors such as DNA methylation have been known to be implicated in a number of cancer etiologies. The main objective of this study was to investigate physiognomies of Promoter DNA methylation patterns associated with oral cancer epigenome with special reference to the ethnic population of Meghalaya, North East India. The present study identifies 27,205 CpG sites and 3811 regions that are differentially methylated in oral cancer when compared to matched normal. 45 genes were found to be differentially methylated within the promoter region, of which 38 were hypermethylated and 7 hypomethylated. 14 of the hypermethylated genes were found to be similar to that of the TCGA-HNSCC study some of which are TSGs and few novel genes which may serve as candidate methylation biomarkers for OSCC in this poorly characterized ethnic group. |
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