申请人:Zalipsky Samuel
公开号:US20050191344A1
公开(公告)日:2005-09-01
A neutral cationic lipid and liposomes prepared from the neutral cationic lipid are described. Liposomes comprised of the lipid are suitable for delivery of a polyanionic compound, such as a nucleic acid. The delivery can be performed in vivo or ex vivo. The neutral cationic lipid, which is neutral in charge at physiologic pH and positively charged at pH values less than physiologic pH, contains a polar head group that imparts solubility of the lipid and permits its packing into a liposomal lipid bilayer.
本文描述了一种中性阳离子脂质和用该中性阳离子脂质制备的脂质体。由该脂质组成的脂质体适用于递送多阴离子化合物,如核酸。输送可在体内或体外进行。中性阳离子脂质在生理 pH 值下带中性电荷,而在 pH 值低于生理 pH 值时则带正电荷,它含有一个极性头基,可增加脂质的溶解性,并使其能够填入脂质体脂质双分子层。