P124

Publication date: November 2015 Source:European Journal of Cancer Supplements, Volume 13, Issue 1 Author(s): A. Bondar, A. Kurilshikov, E. Morozkin, M. Zaripov, M. Kabilov, V. Voytsitskiy, V. Vlassov, P. Laktionov Cancer cells display altered methylation signatures distinguishing them from normal cells. Originating from all tissues and cells of the body cell-free DNA (cfDNA) including aberrantly methylated DNA reflect epigenetic aberrations occurs not only in tumor cells but also in tumor microenvironment. Actually, aberrantly methylated cfDNA has proved to be a promising biomarker for noninvasive detection of cancer with several clinically-certified tests (Epi-pro Colon®, Epi-pro Lung®, Cologuard®). However only one test (Epi-pro Colon®) uses blood plasma – the most convenient source of cfDNA. Input of tissue and age specific methylation along with unidentified reasons lead to the presence of molecules with every conceivable cytosine-methylation patterns which decrease probability of tumor DNA identification. Among numerous variants of cfDNA methylation patterns only few reflect cancer related changes. To identify those tumor-specific profiles single nucleotide resolution of methylated cytosine locations in the individual circulating DNA molecules is obviously required. We performed target bisulfite sequencing of potential prostate cancer (PC) cfDNA markers (GSTP1; RNF219) isolated from blood plasma of 18 healthy donors (HD), 17 benign hyperplasia (...
Source: European Journal of Cancer Supplements - Category: Cancer & Oncology Source Type: research