Acylsulfonamide-Functionalized Zwitterionic Gold Nanoparticles for Enhanced Cellular Uptake at Tumor pH
作者:Tsukasa Mizuhara、Krishnendu Saha、Daniel F. Moyano、Chang Soo Kim、Bo Yan、Young-Kwan Kim、Vincent M. Rotello
DOI:10.1002/anie.201411615
日期:2015.5.26
A nanoparticle design featuring pH‐responsive alkoxyphenyl acylsulfonamide ligands is reported herein. As a result of ligand structure, this nanoparticle is neutral at pH 7.4, becoming positively charged at tumor pH (<6.5). The particle uptake and cytotoxicity increase over this pH range. This pH‐controlled uptake and toxicity makes this particle a promising tool for tumor selective therapy.
本文报道了一种具有 pH 响应性烷氧基苯基酰基磺酰胺配体的纳米粒子设计。由于配体结构,该纳米颗粒在 pH 7.4 时呈中性,在肿瘤 pH (<6.5) 时带正电。在此 pH 范围内,颗粒摄取和细胞毒性会增加。这种 pH 值控制的摄取和毒性使该颗粒成为肿瘤选择性治疗的有前途的工具。