This work was supported by a grant from The Shanghai Science and Technology Committee, Biomedicine Foundation to Yxu (024319120).
肿瘤靶向分子的筛选一直是肿瘤治疗和早期诊断的研究热点 . 表皮生长因子受体 (EGFR) 在很多肿瘤细胞表面过量表达,是一个理想的药物输送靶点 . 选择了 EGFR 表面不同于表皮生长因子 (EGF) 结合位点的一个凹陷部位作为计算机模拟筛选的结合位点,然后使用 DOCK 软件包对 DTP-Plated 有机小分子数据库进行了两遍筛选,最后选择了 7 个有机小分子作为可能的靶向分子 . BIAcore 体外结合实验对所选择的小分子样品进行了进一步的验证,结果表明,小分子 NSC51186 能特异地与 EGFR 结合 . 小分子 NSC51186 和 EGFR 之间的动力学常数也得到进一步的测定 . 新的靶向分子和药物、纳米粒子或者基因载体相连,将有可能用于靶向于 EGFR 的肿瘤治疗和诊断 .
For the development of new targeted drug delivery vectors and molecular imaging reagents, it is essential to find the appropriate ligand that is both safe and efficient. Ligands against EGFR are highly sought after since it is highly expressed on many kinds of tumor cells and considered as a good target in cancer therapy. A new binding site based on EGFR 3D structure was proposed and DTP-Plated small molecule database was screened using the DOCK program. The selected molecules were further evaluated for their in vitro binding capacity using the BIAcore technique. It was shown that the molecule NSC51186 may be a novel small molecule targeting ligand for EGFR. Further studies are warranted to investigate its potential in targeted drug delivery and gene delivery, as well as molecular diagnosis applications.
邓宏伟,郭 妍,孙 烨,徐宇虹.靶向表皮生长因子受体的全新小分子配体筛选[J].生物化学与生物物理进展,2005,32(2):180-186
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