申请人:KYOWA HAKKO KIRIN CO., LTD.
公开号:US20140045913A1
公开(公告)日:2014-02-13
The present invention provides a lipid nano-particles, which allow nucleic acids to be easily introduced into cells, comprising a cationic lipid represented by formula (I)
(wherein: R
1
and R
2
are, the same or different, alkenyl, etc, and
X
3
is absent or is alkyl, etc,
X
1
and X
2
are hydrogen atoms, or are combined together to form a single bond or alkylene, and
Y
1
is absent or anion,
L
1
is a single bond, etc,
R
3
is alkyl, etc), and
a cationic lipid represented by formula (II)
(wherein: R
4
and R
5
are, the same or different, alkenyl, etc, and
X
4
and X
5
are hydrogen atoms, or are combined together to form a single bond or alkylene, and
X
6
is absent or is alkyl, etc,
Y
2
is absent or anion,
a and b are, the same or different, 0 to 3, and
L
4
is a single bond, etc,
R
6
is alkyl, etc,
L
2
and L
3
are —O—, —CO—O— or —O—CO—), and the like.
本发明提供了一种脂质纳米粒子,可以使核酸轻松地进入细胞,包括由式(I)表示的阳离子脂质(其中:R1和R2是相同或不同的烯基等,X3不存在或是烷基等,X1和X2是氢原子,或结合在一起形成单键或亚烷基,Y1不存在或是阴离子,L1是单键等,R3是烷基等),以及由式(II)表示的阳离子脂质(其中:R4和R5是相同或不同的烯基等,X4和X5是氢原子,或结合在一起形成单键或亚烷基,X6不存在或是烷基等,Y2不存在或是阴离子,a和b是相同或不同的0到3,L4是单键等,R6是烷基等,L2和L3是—O—,—CO—O—或—O—CO—)等。