申请人:Nitto Denko Corporation
公开号:US07048925B2
公开(公告)日:2006-05-23
Polyacetals comprising a recurring units represented by a formula selected from the group consisting of formula (I) and (II):
wherein A comprises at least one acetal group; B is selected from the group consisting of —CH—, —CH(CH3)—, CH2CH—, —CH2C(CH3)—, —CH(CH3)CH—, and —CHCH(CH3)CH(CH3)—; Z is selected from the group consisting of C(O)OR1, C(O)SR1, C(O)NR1R2, and VU; V is a linker group; U is selected from the group consisting of poly(ethyleneimine), poly(propyleneimine), poly(lysine), PAMAM dendrimer, octaamine dendrimer, hexadecaamine dendrimer, enhancer, and targeting receptor; R1 and R2 are each individually selected from the group consisting of hydrogen, C1 to C10 alkyl, and C6 to C10 aryl; D is a linkage selected from the group consisting of carboxylic amide, carboxylic ester, urea, and urethane; and G is selected from the group consisting of C4 to C20 alkyl, C6-C10 aryl, and —(OCH2CH2)n—, where n is in the range of 1 to about 250, are useful in nucleic acid delivery applications. In preferred embodiments, complexes formed between polyacetals of the formulae (I) or (II) and polynucleotides are useful as transfection reagents.
聚缩醛包括由以下公式中所选的重复单元组成:其中A包括至少一个缩醛基团;B从以下组中选择:—CH—,—CH(CH3)—,CH2CH—,—CH2C(CH3)—,—CH(CH3)CH—和—CHCH(CH3)CH(CH3)—;Z从以下组中选择:C(O)OR1,C(O)SR1,C(O)NR1R2和VU;V是连接基团;U从聚乙烯亚胺,聚丙烯亚胺,聚赖氨酸,PAMAM树枝状聚合物,八胺树枝状聚合物,十六胺树枝状聚合物,增强剂和靶向受体的组中选择;R1和R2分别从氢,C1至C10烷基和C6至C10芳基的组中选择;D是从羧酰胺,羧酯,脲和脲醚的组中选择的连接;G从C4至C20烷基,C6-C10芳基和—(OCH2CH2)n—中选择,其中n在约1到250范围内,对核酸传递应用有用。在优选实施例中,由公式(I)或(II)的聚缩醛与多核苷酸形成的复合物可作为转染试剂使用。