The instant invention provides for novel cationic lipids 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 is susceptible to hydrolytic instability that may translate into reduced liver residence times and reduced hepatocellular toxicity. The present invention employs acetals and ketals to provide a low pH sensitive chemical handle for degradation.
本发明提供了一种新型的阳离子脂质,可与其他脂质组分如
胆固醇和P
EG-脂质结合,形成与寡核苷酸一起的脂质纳米粒子。本发明的目的是提供一种易受
水解不稳定性影响的阳离子脂质支架,可能导致减少肝脏滞留时间和减少肝细胞毒性。本发明采用
缩醛和
缩酮来提供对低pH敏感的
化学处理,以进行降解。