Tumor Targeting with Novel Pyridyl 6-Substituted Pyrrolo[2,3-<i>d</i>]Pyrimidine Antifolates via Cellular Uptake by Folate Receptor α and the Proton-Coupled Folate Transporter and Inhibition of <i>De Novo</i> Purine Nucleotide Biosynthesis
作者:Manasa Ravindra、Adrianne Wallace-Povirk、Mohammad A. Karim、Mike R. Wilson、Carrie O’Connor、Kathryn White、Juiwanna Kushner、Lisa Polin、Christina George、Zhanjun Hou、Larry H. Matherly、Aleem Gangjee
DOI:10.1021/acs.jmedchem.7b01708
日期:2018.3.8
analogues of 1, where the phenyl side-chain is replaced by 3′,6′ (5, 8), 2′,5′ (6, 9), and 2′,6′ (7, 10) pyridyls, were analyzed. Proliferation inhibition of isogenic Chinese hamster ovary (CHO) cells expressing folate receptors (FRs) α and β were in rank order, 6 > 9 > 5 > 7 > 8, with 10 showing no activity, and 6 > 9 > 5 > 8, with 10 and 7 being inactive, respectively. Antiproliferative effects toward
6-取代吡咯并[2,3的肿瘤靶向特异性d ]嘧啶类似物1,其中苯基侧链被替换3',6'(5,8),2',5'(6,9),和2',6'(7,10)pyridyls,进行了分析。表达叶酸受体(FR)的α同基因的中国仓鼠卵巢的细胞增殖抑制(CHO)细胞和β分别在排列顺序,6 > 9 > 5 > 7 > 8,用10表示没有活动,和6 > 9 > 5 >与图8相同,其中10和7分别处于非活动状态。对与表达FRα和FRβ的细胞的抗增殖作用反映在与[ 3 H]叶酸的竞争性结合中。只有化合物6对表达质子偶联叶酸受体(PCFT)的CHO细胞具有活性(效力比1高约4倍),并抑制PCFT吸收[ 3 H]甲氨蝶呤。在KB和IGROV1肿瘤细胞中,有6个细胞显示<1 nM IC 50,效力比1强约2-3倍。化合物6在从头嘌呤生物合成中抑制了甘氨酰胺核糖核苷酸甲酰基转移酶并显示出有效的作用SCID小鼠皮下IGROV1肿瘤异种移植的体内功效。