A Ras, Raf, MEK, ERK or RSK inhibitor, namely a P-glycoprotein expression inhibitor or a BCRP expression inhibitor, can be screened by utilizing the MAPK signaling activity as an indicator. It becomes possible to provide an anticancer agent which is reduced in resistance acquisition, and also provide an agent for preventing the resistance against an anticancer agent, which can enhance the therapeutic effect of the anticancer agent against cancer.
利用
MAPK 信号活性作为指标,可以筛选出 Ras、Raf、MEK、ERK 或 RSK
抑制剂,即 P 糖蛋白表达
抑制剂或 BCRP 表达
抑制剂。这样就有可能提供一种减少抗药性产生的抗癌剂,还可以提供一种防止抗癌剂产生抗药性的药剂,从而提高抗癌剂对癌症的治疗效果。