pH-triggered solubility and cytotoxicity changes of malachite green derivatives incorporated in liposomes for killing cancer cells
作者:Ryoko M. Uda、Nao Yoshida、Tomoyuki Iwasaki、Keita Hayashi
DOI:10.1039/d0tb01346c
日期:——
(MG-Xs) are incorporated in liposomes. In all three cases, a substituent (X) is covalently linked to the central carbon atom, abbreviated as MG-OH, MG-OCH3, and MG-CN. The three MG-X compounds are solubilized separately in liposome membranes and become cationic (MG+) and water soluble under acidic conditions. MG+ is consequently released from the liposome to the aqueous exterior. Their release behavior
将三种不同的孔雀石绿无色衍生物(MG-Xs)掺入脂质体中。在所有三种情况下,取代基(X)与中心碳原子共价连接,缩写为MG-OH,MG-OCH 3和MG-CN。三种MG-X化合物分别溶解在脂质体膜中,在酸性条件下变为阳离子(MG +)和水溶性。因此,MG +从脂质体释放到水性外部。它们的释放行为与其电离能力相对应:MG-OH> MG-OCH 3 > MG-CN。脂质体的细胞摄取,细胞毒性作用以及MG +的位置使用衍生自结肠癌的鼠细胞(结肠26细胞)和人胚胎肾细胞(HEK 293细胞)研究了癌细胞中的细胞凋亡。对癌细胞的毒性作用与MG-Xs的电离能力有关。脂质体通过内吞途径有效递送MG +,导致含有MG-OH的脂质体的细胞毒性高于游离MG-OH和MG +的脂质体。构成脂质体膜的磷脂的差异几乎不影响MG-OH的电离率和细胞毒性。共聚焦荧光显微镜观察表明,MG +在酸性细胞区室中释放后最终被转运到细胞核中。