A Selective and Slowly Reversible Inhibitor of <scp>l</scp>-Type Amino Acid Transporter 1 (LAT1) Potentiates Antiproliferative Drug Efficacy in Cancer Cells
作者:Kristiina M. Huttunen、Mikko Gynther、Johanna Huttunen、Elena Puris、Julie A. Spicer、William A. Denny
DOI:10.1021/acs.jmedchem.6b00190
日期:2016.6.23
The L-type amino acid transporter 1 (LAT1) is a transmembrane protein carrying bulky and neutral amino acids into cells. LAT1 is over-expressed in several types of tumors and its inhibition can result in reduced cancer cell growth. However, known LAT1 inhibitors lack selectivity over other transporters. In the present study, we designed and synthesized a novel selective LAT1 inhibitor (1), which inhibited
L型氨基酸转运蛋白1(LAT1)是一种跨膜蛋白,可将大而中性的氨基酸携带到细胞中。LAT1在几种类型的肿瘤中过表达,其抑制作用可能导致癌细胞生长减少。但是,已知的LAT1抑制剂缺乏对其他转运蛋白的选择性。在本研究中,我们设计并合成了一种新型的选择性LAT1抑制剂(1),该抑制剂可抑制LAT1底物,L-亮氨酸的摄取以及细胞的生长。即使在低浓度(25 microM)下,它也显着增强了Bestatin和顺铂的疗效。抑制作用是缓慢可逆的,因为该抑制剂能够从细胞表面和血脑屏障中分离出来。而且,该抑制剂在代谢上是稳定的,并且对LAT1具有选择性。