Impact of viral and host DNA methylations on HPV16-related cervical cancer pathogenesis
| Autor: | Shrinka Sen, Paramita Mandal, Amrapali Bhattacharya, Sudip Kundu, Rahul Roy Chowdhury, Nidhu Ranjan Mondal, Tanmay Chatterjee, Biman Chakravarty, Sudipta Roy, Sharmila Sengupta |
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| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: | |
| Zdroj: | Tumor Biology, Vol 39 (2017) |
| Druh dokumentu: | article |
| ISSN: | 1423-0380 10104283 |
| DOI: | 10.1177/1010428317699799 |
| Popis: | Epigenetic alterations within human papillomavirus (HPV) and host cellular genomes are known to occur during cervical carcinogenesis. Our objective was to analyse the influence of (1) methylation within two immunostimulatory CpG motifs within HPV16 E6 and E7 genes around the viral late promoter and their correlation, if any, with expression deregulation of host receptor (TLR9) and DNA methyltransferases (DNMT1, DNMT3A and DNMT3B) and (2) global DNA methylation levels within CpGs of the repetitive Alu sequences, on cervical cancer (CaCx) pathogenesis. Significantly higher proportions of CaCx samples portrayed methylation in immunostimulatory CpG motifs, compared to HPV16-positive non-malignant samples, with cases harbouring episomal HPV16 showing decreased methylation compared to those with viral integration. A significant linear trend of TLR9 upregulation was recorded in the order of HPV–negative controls |
| Databáze: | Directory of Open Access Journals |
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