Tricyclic isoxazoles are novel inhibitors of the multidrug resistance protein (MRP1)
作者:Bryan H. Norman、Joseph M. Gruber、Sean P. Hollinshead、Joseph W. Wilson、James J. Starling、Kevin L. Law、Tracy D. Self、Linda B. Tabas、Daniel C. Williams、Donald C. Paul、Margaret M. Wagner、Anne H. Dantzig
DOI:10.1016/s0960-894x(02)00051-3
日期:2002.3
MRP1-mediated LTC(4) uptake into membrane vesicles prepared from the MRP1-overexpressing HeLa-T5 cells (EC(50)=1.8 microM). LY 402913 also shows selectivity ( approximately 22-fold) against the related transporter, P-glycoprotein, in HL60/Adr and HL60/Vinc cells. Finally, when dosed in combination with the oncolytic MRP1 substrate vincristine, LY 402913 delays the growth of MRP1-overexpressing tumors in
从筛选中鉴定出三环异恶唑为一类新型的选择性多药耐药蛋白(MRP1)抑制剂。从筛选线索来看,SAR的努力导致制备了LY 402913(9h),该化合物抑制Hela-T5细胞(EC(50)= 0.90 microM)中的MRP1并逆转对阿霉素等MRP1底物的耐药性,同时显示没有固有的细胞毒性。此外,LY 402913抑制从过表达MRP1的HeLa-T5细胞(EC(50)= 1.8 microM)制备的膜囊泡中吸收ATP依赖的MRP1介导的LTC(4)。LY 402913还显示了在HL60 / Adr和HL60 / Vinc细胞中对相关转运蛋白P糖蛋白的选择性(约22倍)。最后,当与溶瘤性MRP1底物长春新碱联合给药时,LY 402913会延迟体内过表达MRP1的肿瘤的生长。