多药耐药（MDR）是原发性肝癌（HCC)临床治疗失败的重要原因之一。研究证实，MRP1/ABCC1基因过度表达可导致MDR，且MRP1/ABCC1基因SNP与个体对药物的敏感性有密切的关系，但HCC中MRP1/ABCC1基因SNP能否影响miRNA对肿瘤细胞药物敏感性的调控目前仍不清楚。本项目拟结合生物信息学技术和实验生物学方法，较系统地识别原发性肝癌中与肝癌耐药性密切相关的MRP1/ABCC1基因的SNP，分析相关miRNA调控MRP1/ABCC1基因SNP对肝癌细胞药物敏感性的影响。本项目将进一步阐明HCC中MRP1/ABCC1基因SNP作用及miRNA调控肝癌细胞耐药的机理，为肝癌的个体化治疗提供新思路。

The multidrug resistance (MDR) is one important reason of the failure for clinical treatment to the primary Hepatocellular Carcinoma (HCC). The study confirmed that MRP1/ABCC1 overexpression can lead to MDR, MRP1/ABCC1 gene SNP which is closely related to individual sensitivity to drugs, but MRP1/ABCC1 gene SNP in HCC can influence miRNA on regulating drug sensitivity of tumor cells or not remaining unclear. This project is combined with bioinformatics technology and experimental biology methods to systematically identify ABCC1 gene SNP which is closely related to drug-resistant hepatocellular carcinoma in primary hepatocellular carcinoma, and analysis the correlated miRNA that influenced on hepatocellular carcinoma drug sensitivity through regulating MRP1/ABCC1 gene SNP. This project will further clarify the function of MRP1/ABCC1 gene SNP of hepatocellular carcinoma, and reveal miRNA regulation drug-resistant mechanism of hepatocellular carcinoma, and provide the new ideas for individual therapy of hepatocellular carcinoma.