Synthesis, in vitro, and in vivo characterization of an integrin αvβ3-targeted molecular probe for optical imaging of tumor
作者:Christopher A. Burnett、Jianwu Xie、Jade Quijano、Zhimin Shen、Finie Hunter、Monica Bur、King C.P. Li、S. Narasimhan Danthi
DOI:10.1016/j.bmc.2005.03.024
日期:2005.6
Integrin alpha(v)beta(3) is a widely-recognized target for the development of targeted molecular probes for imaging pathological conditions. alpha(v)beta(3) is a cell-surface receptor protein that is upregulated in various pathological conditions including osteoporosis, rheumatoid arthritis, macular degeneration, and cancer. The synthesis of an alpha(v)beta(3)-targeted optical probe 7 from compound
整联蛋白alpha(v)beta(3)是开发用于成像病理状况的靶向分子探针的广泛公认的目标。alpha(v)beta(3)是一种细胞表面受体蛋白,在各种病理状况(包括骨质疏松症,类风湿性关节炎,黄斑变性和癌症)中均被上调。描述了由化合物1合成的靶向α(v)beta(3)的光学探针7,及其体外和体内表征。合成了一系列有效的非肽整联蛋白拮抗剂1的脂肪族氨基甲酸酯衍生物,并在酶联免疫吸附测定(ELISA)和细胞粘附抑制测定中确定了对α(v)beta(3)的结合亲和力。疏水性氨基甲酸酯连接的附件将母体化合物对α(v)beta(3)的结合亲和力提高了2-20倍。与化合物1和c-RGDfV相比,该系列中的Boc保护的新戊基衍生物显示出对α(v)beta(3)(IC(50)= 0.72 nM)的最佳结合亲和力。光学探针7利用新戊基接头,并显示出增加的结合亲和力和显着的体外肿瘤细胞摄取以及体内特定的肿瘤蓄