A lipid membrane structure encapsulating an siRNA inside thereof and containing a lipid compound of the formula (I) as a lipid component (R1 and R2 represent CH3—(CH2)n—CH═CH—CH2—CH═CH—(CH2)m—, n represents an integer of 3 to 5, m represents an integer of 6 to 10, p represents an integer of 2 to 7, and R3 and R4 represent a C1-4 alkyl group or a C2-4 alkenyl group.
一种脂质膜结构,在其内部封装 siRNA,并含有式 (I) 的脂质化合物作为脂质成分(R1 和 R2 代表
CH3-(
CH2)n-CH═CH- -CH═CH-( )m-,n 代表 3 至 5 的整数,m 代表 6 至 10 的整数,p 代表 2 至 7 的整数,R3 和 R4 代表 C1-4 烷基或 C2-4 烯基)。