α-Tocopherol-based cationic amphiphiles with a novel pH sensitive hybrid linker for gene delivery
作者:Venkanna Muripiti、Hari Krishnareddy Rachamalla、Rajkumar Banerjee、Srilakshmi. V. Patri
DOI:10.1039/c8ob00276b
日期:——
in vitro transfection studies were carried out in NIH3 T3, B16F10, HEK-293, and HepG2 cell lines. In vitro transfection data for the liposomes of lipids (Lp1, Lp2 and Lp3) revealed that the Lp2 lipid with a novel hybrid pH sensitive linker showed superior transfection efficiency when compared with the remaining two analogues. More importantly, Lp2 has shown a similar pattern of transfection efficiency
内体逃逸是有效脂质体基因传递的障碍之一。为了解决这个问题,并基于较早的使用生育酚阳离子脂质的令人鼓舞的结果,我们通过在生育酚,锚固部分和碱性tris之间引入了一种新型的混合pH敏感的连接基“醚-β-羟基-三唑”,对生育酚阳离子脂质进行了化学修饰。 2-羟乙基)季铵头基(Lp2)。作为对照脂质,我们设计了两种脂质(Lp1和Lp3),一种脂质仅在α-生育酚和季三(2-羟乙基)铵(Lp1)之间具有醚-β-羟基接头,另一种具有相同的新型杂化物连接器即连接的α-生育酚和季三乙基乙基铵头基(Lp3)之间的“醚-β-羟基三唑” 。脂质体由众所周知的共脂质,1,2-二油酰基-sn-甘油-3-磷酸乙醇胺(DOPE)和生物物理特性(如DNA结合,流体动力学直径和脂质体和脂质复合物的整体表面电荷)的组合配制而成评价各个脂质。在NIH3 T3,B16F10,HEK-293和HepG2细胞系中进行了细胞活力测定和体