Improvement of Targeted Gene Delivery to Human Cancer Cells by a Novel Trifunctional Crosslinker
作者:Maki Shiota、Lahman Shamsur、Shun-ichi Kawahara、Renu Wadhwa、Yutaka Ikeda
DOI:10.1002/asia.200900129
日期:2009.8.3
an immunoconjugate which displays targeting ligands, such as antibody fragments, with a high density is reported. For this purpose, we synthesized a novel trifunctional crosslinking reagent. By the use of this reagent, ligands targeting the specific cell can be displayed on the surface of the drug carrier with a high density. In this study, we display HER2 (human epidermal growth‐factor receptor‐2)
报道了一种构建免疫偶联物的简便方法,该免疫偶联物显示出高密度的靶向配体,例如抗体片段。为此,我们合成了一种新型的三官能交联剂。通过使用该试剂,可以将靶向特定细胞的配体高密度地显示在药物载体的表面上。在这项研究中,我们在支链聚乙烯亚胺(PEI)上显示了HER2(人类表皮生长因子受体2)结合配体,该配体可与质粒DNA形成多链体。与HER2的胞外域结合的动力学分析表明,与低密度的PEI展示的配体相比,表现出高密度的配体的PEI与靶标的结合更牢固。基因载体上显示的HER2配体密度的增加有助于提高转染效率。该方法可以应用于其他药物输送系统,包括脂质体,胶束等。