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Abstract
Here we investigated the roles of P28GANK in multidrug resistance of gastric cancer cells and the possible mechanisms. We constructed the siRNA vector of P28GANK and transfected it into human vincristine-resistant gastric adenocarcinoma cell line SGC7901/VCR. Down-regulation of P28GANK could enhance the sensitivity of SGC7901/VCR cells towards anticancer drugs and could decrease the capacity of cells to efflux adriamycin. P28GANK could down-regulate the expression of P-gp, but not affect MRP or GST. In vivo experiment also confirmed our above results. Further study of the biological functions of P28GANK might be helpful for understanding the mechanisms of MDR in gastric cancer.
| ABBREVIATIONS | ||
| VCR | = | vincristine |
| ADR | = | adriamycin |
| 5-Flu | = | 5-fluorouracil |
| CDDP | = | cisplatin |
| MTT | = | 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide |
| PBS | = | phosphate buffered saline |
| MDR | = | multidrug resistance |
| P-gp | = | P-glycoprotein |
| ABBREVIATIONS | ||
| VCR | = | vincristine |
| ADR | = | adriamycin |
| 5-Flu | = | 5-fluorouracil |
| CDDP | = | cisplatin |
| MTT | = | 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide |
| PBS | = | phosphate buffered saline |
| MDR | = | multidrug resistance |
| P-gp | = | P-glycoprotein |