Abstract:
Objective To investigate the relationship between aberrant promoter CpG islands methylation status of secreted frizzled related protein 1 (SFRP1) and long intersper sed nuclear element 1 (
LINE1) gene and clinicopathologic parameters to determine their prognosis value for hepatocellular carcinoma (HCC). Methods 105 cases of HCC and 50 cases of normal people plasma were collected, and then the promoter hypermethylation status of
SFRP1 and hypormethylation status of
LINE1 were examined by methylation specific PCR (MSP); The relationship between
SFRP1/LINE1 methylation status and patients’ clinicopathologic factors was analyzed; The association between
SFRP1/LINE1 methylation status and disease-free survival and overall survival was analyzed by Kaplan-Meier curves, the log-rank test, and multivariate Cox regression. Results
SFRP1 gene promoter CpG islands hypermethylation and
LINE1 gene promoter CpG islands hypomethylation were found in 59.05% (62/105) and 66.67% (70/105) of 105 cancerous plasma cases, repectively, SFRP1 hypermethylation status and
LINE1 hypomethylation status in plasma of HCC account for 43.81%(62/105) and no positive methylation cases were detected in normal cases; The hypermethylation status of
SFRP1 and hypomethylation status of
LINE1 gene were related with HBsAg and α-fetoprotein (AFP) level; There was statistically significant difference between CpG islands hypermethylation of two genes and disease-free survival rate and overall survival rate; The group patients with
SFRP1 hypermethylation positive and
LINE1 hypomethylation positive demonstrated the worst prognosis while the group with
SFRP1 hypermethylation negative and
LINE1 hypomethylation negative had the best prognosis. Conclusion The promoter methylation of
SFRP1 and
LINE1 is correlated with the occurrence and development of HCC.
SFRP1 and
LINE1 might be potential and reliable biomarkers for predicting prognosis in HCC patients.