Human Serum Albumin-Delivered [Au(PEt<sub>3</sub>)]<sup>+</sup> Is a Potent Inhibitor of T Cell Proliferation
作者:Tyler C. Dean、Mu Yang、Mingyong Liu、Jason M. Grayson、Anthony W. DeMartino、Cynthia S. Day、Jingyun Lee、Cristina M. Furdui、Ulrich Bierbach
DOI:10.1021/acsmedchemlett.7b00142
日期:2017.5.11
assays, 90 cationic complexes [AuPL] n+ (P = phosphine ligand; L = thiourea derivative or chloride) were studied for their antiproliferative activity in CD8+ T lymphocyte cells. The activity of the compounds correlates with the steric bulk of the phosphine ligands. Thiourea serves as a leaving group that is readily replaced by cysteine thiol (NMR, ESI-MS). Taking advantage of selective thiourea ligand
使用模块化库格式结合细胞生存力(MTS)和流式细胞术分析,研究了90种阳离子复合物[AuPL] n +(P =膦配体; L =硫脲衍生物或氯化物)在CD8 + T淋巴细胞中的抗增殖活性。化合物的活性与膦配体的空间体积有关。硫脲是一个离去基团,很容易被半胱氨酸巯基取代(NMR,ESI-MS)。利用选择性硫脲配体交换,化合物1和2中的[Au(PEt3)] +和[Au(JohnPhos)] +(JohnPhos = 1,1'-联苯-2-基)二叔丁基膦的片段将其转移至重组人血清白蛋白(rHSA)。PEt3促进了HSA(HSA-1)中Cys34的有效修饰,而使用庞大的JohnPhos作为载体配体会导致血清蛋白被多个金加合物(HSA-2)进行非特异性修饰(Ellman检验,ESI-TOF MS)。HSA-1(而不是HSA-2)以纳摩尔剂量强烈抑制T细胞增殖。讨论了HSA作为递送载体在基于黄金的自身免疫性疾病治疗中的潜在作用。