To find a more sensitive and earlier diagnostic marker for hepatocellular carcinoma, methylation-profils of CpG islands in the promoter of eleven genes in hepatocellular carcinoma（HCC） carcinoma and pericarcinoma ti...To find a more sensitive and earlier diagnostic marker for hepatocellular carcinoma, methylation-profils of CpG islands in the promoter of eleven genes in hepatocellular carcinoma（HCC） carcinoma and pericarcinoma tissues from ten patients were examined by using methylation-specific PCR （MSP） method. MSP was used to detect the methylation of p16, p53, Secreted frizzled-related protein 1 （SFRP 1） and SFRP2 promoters. Meanwhile, plasma alpha-fetoprotein （AFP） levels in 53 patients were also determined. The results showed that HCC was closely correlated to methylation in promoter of tumor-suppressing gene p16, p53, SFRP1 and SFRP2. The results suggest that methylation of SFRP2 promoter is possible a better marker for diagnosis of HCC than plasma Alpha-fetoprotein （AFP） levels. The false negative of SFRP1 and SFRP2 are perfectly complementary. If SFRP1 and SFRP2 were both considered as a complementary positive marker at the same time, the accurate rate for diagnosis of HCC is 100%.展开更多
基金Suported by the Scientific and Technology Bureau of Hubei Province Foundation (2005AA301C26)
文摘To find a more sensitive and earlier diagnostic marker for hepatocellular carcinoma, methylation-profils of CpG islands in the promoter of eleven genes in hepatocellular carcinoma（HCC） carcinoma and pericarcinoma tissues from ten patients were examined by using methylation-specific PCR （MSP） method. MSP was used to detect the methylation of p16, p53, Secreted frizzled-related protein 1 （SFRP 1） and SFRP2 promoters. Meanwhile, plasma alpha-fetoprotein （AFP） levels in 53 patients were also determined. The results showed that HCC was closely correlated to methylation in promoter of tumor-suppressing gene p16, p53, SFRP1 and SFRP2. The results suggest that methylation of SFRP2 promoter is possible a better marker for diagnosis of HCC than plasma Alpha-fetoprotein （AFP） levels. The false negative of SFRP1 and SFRP2 are perfectly complementary. If SFRP1 and SFRP2 were both considered as a complementary positive marker at the same time, the accurate rate for diagnosis of HCC is 100%.
