Abstract
This study was aimed to investigate the relationship between the expression of drebrin (DBN1) gene and resistance in colon cancer to reveal the mechanism of tumor drug resistance and provide a basis for the reversal of this drug resistance in tumor cells. The human colon carcinoma cell line HCT-8 was used, and vincristine (VCR)-resistant colon cancer cell line HCT-8/V was established by gradually increasing the concentration of VCR. Polymerase chain reaction (PCR) primers were designed for DBN1 gene. The DBN1 differential expression in colon cancer sensitive and resistant cell lines was detected by fluorescence quantitative PCR. Western blot analysis was used to study DBN1 expression in the resistant cells further. VCR resistance of HCT-8/V cell line was established. Quantitative PCR and Western blot results showed that DBN1 expression in the resistant cell line was significantly lower, the difference being statistically significant (P < 0.05). Low DBN1 gene expression may be associated with colon cancer cell resistance to VCR.
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