申请人:FUJIFILM Corporation
公开号:US20220096381A1
公开(公告)日:2022-03-31
An object of the present invention is to provide a lipid composition making it possible to achieve excellent delivery of nucleic acids. According to the present invention, there is provided a lipid composition containing a lipid represented by Formula (1) or a salt thereof, a nonionic lipid, a lipid having a nonionic hydrophilic polymer structure, and a nucleic acid, in which the lipid composition contains or does not contain a zwitterionic lipid, and in a case where (A) represents a molar ratio in percentage of the lipid represented by Formula (1) or a salt thereof to total lipids constituting the lipid composition and (B) represents a molar ratio in percentage of the zwitterionic lipid to total lipids constituting the lipid composition, (A) and (B) satisfy 40<(A)−(B)≤90.
In the formula, X represents —NR
1
— or —O—, R
1
represents a hydrogen atom, a hydrocarbon group, or the like, R
2
and R
3
each independently represent a hydrogen atom, a hydrocarbon group, or the like, R
4
, R
5
, R
6
, R
7
, R
8
, R
9
, R
10
, R
11
, and R
12
each independently represent a hydrogen atom or an alkyl group, groups in any one or more pairs among R
4
and R
5
, R
10
and R
5
, R
5
and R
12
, R
4
and R
6
, R
5
and R
6
, R
6
and R
7
, R
6
and R
10
, R
12
and R
7
, and R
7
and R
8
may be linked to each other to form a 4- to 7-membered ring which may contain an O atom, a, b, c, and d are each independently represent an integer of 0 to 3, a+b is 1 or more, and c+d is 1 or more.
本发明的目的是提供一种脂质组合物,使得核酸的传递能够实现优异。根据本发明,提供一种脂质组合物,其中包含式(1)或其盐所代表的脂质、非离子脂质、具有非离子亲水性聚合物结构的脂质和核酸,所述脂质组合物包含或不包含一个带电离子脂质,且当(A)代表式组成脂质组合物中式(1)或其盐所代表的脂质的摩尔比例百分比,(B)代表式组成脂质组合物中带电离子脂质的摩尔比例百分比时,(A)和(B)满足40 < (A) - (B) ≤ 90。在式中,X代表—NR1—或—O—,R1代表氢原子、烃基或类似物,R2和R3各自独立地代表氢原子、烃基或类似物,R4、R5、R6、R7、R8、R9、R10、R11和R12各自独立地代表氢原子或烷基,R4和R5、R10和R5、R5和R12、R4和R6、R5和R6、R6和R7、R6和R10、R12和R7以及R7和R8中的任意一个或多个成对的基团可以连接在一起形成一个含氧原子的4-7环,a、b、c和d各自独立地代表0到3的整数,a+b≥1,c+d≥1。