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Polymorphism attribution of cSNPs in cancer-related genes located in loss regions with a high frequency of HCC between HBV and health groups |
| WANG Juan, NI Hong, CHEN Li, CHEN Chengbin, SONG Wenqin |
| College of Life Sciences, Nankai University, Tianjin 300071, China |
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Abstract Cancer-related genes harbored in the loss regions containing a high frequency of hepatocellular carcinoma (HCC) were selected. Related information was gathered and the coding single nucleotide polymorphism (cSNP) sequences were obtained from the single nucleotide polymorphism (SNP) database. The appropriate primers and oligonucleotide probes were then designed in accordance with the SNP sites, and subsequently, the gene chips for detecting SNPs were constructed. Genomic DNA was extracted from blood samples of healthy controls and from patients with HBV infection. The sequences, including the SNPs, were amplified via polymerase chain reaction (PCR) and labeled using digoxigenin deoxyuridine tri-phosphate (Dig-dUTP). The labeled products were then hybridized with the SNP chips. Results confirmed that the differences in allele frequencies of three SNPs EGFL3 (rs947345), Caspase9 (rs2308950), and E2F2 (rs3218171) were distinct between HBV-infected patients and controls, suggesting that these SNPs ocuring in high frequency in HBV-infected individuals may be associated with susceptibility to HCC.
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Issue Date: 05 September 2007
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