Methylation status of DLEC1 promoter in colorectal cancer patients and its clinical relevance / 第二军医大学学报

Objective To detect the methylation status of DLEC1 promoter in the tissue and serum of colorectal cancer(CRC) patients and to evaluate its clinical relevance.Methods Genomic DNA was extracted from the tissues(cancer tissue and corresponding adjacent normal tissue) and sera of 71 CRC patients;serum genomic DNA was also obtained from 20 patients with benign gastrointestinal diseases and 20 healthy donors.Promoter methylation status of DLEC1 gene was detected by methylation-specific polymerase chain reaction(MSP).Results The incidence of aberrant methylation of DLEC1 promoter was 45.1%(32/71) in CRC tissues,which was significantly higher than that in the adjacent normal tissues(7.1%,4/56)(P