Novel amidine analogue of melphalan as a specific multifunctional inhibitor of growth and metabolism of human breast cancer cells
作者:Krzysztof Bielawski、Anna Bielawska、Katarzyna Sosnowska、Wojciech Miltyk、Katarzyna Winnicka、Jerzy Pałka
DOI:10.1016/j.bcp.2006.04.028
日期:2006.7
A novel amidine analogue of melphalan (AB4) was compared to its parent drug, melphalan in respect to cytotoxicity, DNA and collagen biosynthesis in MDA-MB-231 and MCF-7 human breast cancer cells. It was found that AB4 was more active inhibitor of DNA and collagen synthesis as well more cytotoxic agent than melphalan. The topoisomerase I/II inhibition assay indicated that AB4 is a potent catalytic inhibitor
在MDA-MB-231和MCF-7人乳腺癌细胞的细胞毒性,DNA和胶原生物合成方面,比较了一种新型的melphalan am类似物(AB4)与它的母体melphalan。已经发现,AB4比美法仑更有效地抑制DNA和胶原蛋白的合成,并具有更多的细胞毒性剂。拓扑异构酶I / II抑制试验表明AB4是拓扑异构酶II的有效催化抑制剂。乙锭置换试验的数据表明,AB4插入DNA的AT序列的小沟中。与melphalan相比,发现AB4抑制胶原蛋白合成的效力更高,同时对蛋白酶活性和表达的抑制作用更强。该现象与由AB4引起的β(1)-整合素和IGF-I受体介导的信号转导的抑制有关。在20℃孵育24小时的细胞中,β(1)整合素受体以及Sos-1和磷酸化的MAPK,ERK(1)和ERK(2)的表达明显降低,而FAK,Shc和Grb-2的表达却没有明显降低。 microM AB4与未处理的对照细胞相比,而在相同条