The present invention provides a reagent for introducing a protein or gene into a cell. The reagent of the present invention is, for example, a reagent for introducing a protein or gene into a cell, which comprises a composition comprising a cationic amino acid type lipid represented by the following formula (I)-1:
(wherein in formula (I)-1: L is a single bond, —CONH—, or —S—S—; M
1
is —(CH
2
)
k
— or —(CH
2
CH
2
O)
k
— (wherein k is an integer between 0 and 14); and m1 and m2 are each independently an integer between 11 and 21 (in this regard, when providing a reagent for introducing a gene into a cell, the case where both m1 and m2 are 15 is excluded)).
本发明提供了一种用于将蛋白质或
基因引入细胞的试剂。本发明的试剂例如是一种用于将蛋白质或
基因引入细胞的试剂,包括以下式(I)-1所表示的阳离子
氨基酸型脂质的组合物:(其中在式(I)-1中,L是单键,-CONH-或-S-S-;M1是-(
CH2)k-或-( O)k-(其中k是0至14之间的整数);m1和m2各自独立地是11至21之间的整数(在这方面,当提供一种用于将
基因引入细胞的试剂时,排除m1和m2都为15的情况)。