The instant invention provides for novel cationic lipids of Formula A that can be used in combination with other lipid components such as cholesterol and PEG-lipids to form lipid nanoparticles with oligonucleotides. It is an object of the instant invention to provide a cationic lipid scaffold that demonstrates enhanced efficacy along with lower liver toxicity as a result of lower lipid levels in the liver. The present invention employs low molecular weight cationic lipids with one short lipid chain coupled with inclusion of hydrolysable functionality in the lipid chains to enhance the efficiency and tolerability of in vivo delivery of siRNA.
本发明提供了一种新型的阳离子脂质A公式,可以与
胆固醇和P
EG脂质等其他脂质成分结合使用,形成含寡核苷酸的脂质纳米粒子。本发明的目的是提供一种阳离子脂质支架,其具有增强的功效,同时由于肝脏中脂质
水平降低而具有较低的肝毒性。本发明采用低分子量阳离子脂质,其中一个短脂链与脂链中的可
水解功能包括,以增强siRNA在体内传递的效率和耐受性。