Dual Photo- and pH-Responsive Supramolecular Nanocarriers Based on Water-Soluble Pillar[6]arene and Different Azobenzene Derivatives for Intracellular Anticancer Drug Delivery
作者:Xiao-Yu Hu、Keke Jia、Yu Cao、Yan Li、Shan Qin、Fan Zhou、Chen Lin、Dongmei Zhang、Leyong Wang
DOI:10.1002/chem.201405095
日期:2015.1.12
Two novel types of supramolecular nanocarriers fabricated by the amphiphilic host–guest inclusion complex formed from water‐soluble pillar[6]arene (WP6) and azobenzene derivatives G1 or G2 have been developed, in which G1 is structurally similar to G2 but has an extra phenoxy group in its hydrophobic region. Supramolecular micelles can be initially formed by WP6 with G1, which gradually transform into
已经开发了由水溶性支柱[6]芳烃(WP6)和偶氮苯衍生物G1或G2形成的两亲主体-客体包合物形成的两种新型超分子纳米载体,其中G1在结构上与G2类似,但具有额外的结构。在其疏水区域的苯氧基。超分子胶束最初可以由具有G1的WP6形成,然后逐渐转变为具有液晶特性的分层结构,而稳定的超分子囊泡则由WP6和G2获得,它们表现出光和pH的双重响应。值得注意的是,结果WP6 ⊃ G2囊泡可以有效地封装抗癌药米托蒽醌(MTZ),从而获得载有MTZ的囊泡,该囊泡在模拟的正常生理环境中保持良好的稳定性,而在与肿瘤细胞类似的酸性环境中或在外部紫外线照射下,囊封的药物迅速已发布。更重要的是,细胞毒性试验表明这种囊泡具有良好的生物相容性,并且载有MTZ的囊泡具有与游离MTZ相当的抗癌活性,尤其是在附加紫外线刺激下,而其对正常细胞的细胞毒性则显着降低。流式细胞仪分析进一步证实了载有MTZ的囊泡引起的癌细胞死亡与细胞凋亡有关。所以,