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The signature of liver cancer in immune cells DNA methylation.


ABSTRACT: Background:The idea that changes to the host immune system are critical for cancer progression was proposed a century ago and recently regained experimental support. Results:Herein, the hypothesis that hepatocellular carcinoma (HCC) leaves a molecular signature in the host peripheral immune system was tested by profiling DNA methylation in peripheral blood mononuclear cells (PBMC) and T cells from a discovery cohort (n?=?69) of healthy controls, chronic hepatitis, and HCC using Illumina 450K platform and was validated in two validation sets (n?=?80 and n?=?48) using pyrosequencing. Conclusions:The study reveals a broad signature of hepatocellular carcinoma in PBMC and T cells DNA methylation which discriminates early HCC stage from chronic hepatitis B and C and healthy controls, intensifies with progression of HCC, and is highly enriched in immune function-related genes such as PD-1, a current cancer immunotherapy target. These data also support the feasibility of using these profiles for early detection of HCC.

SUBMITTER: Zhang Y 

PROVIDER: S-EPMC5774119 | biostudies-literature | 2018

REPOSITORIES: biostudies-literature

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The signature of liver cancer in immune cells DNA methylation.

Zhang Yonghong Y   Petropoulos Sophie S   Liu Jinhua J   Cheishvili David D   Zhou Rudy R   Dymov Sergiy S   Li Kang K   Li Ning N   Szyf Moshe M  

Clinical epigenetics 20180118


<h4>Background</h4>The idea that changes to the host immune system are critical for cancer progression was proposed a century ago and recently regained experimental support.<h4>Results</h4>Herein, the hypothesis that hepatocellular carcinoma (HCC) leaves a molecular signature in the host peripheral immune system was tested by profiling DNA methylation in peripheral blood mononuclear cells (PBMC) and T cells from a discovery cohort (<i>n</i> = 69) of healthy controls, chronic hepatitis, and HCC u  ...[more]

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