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    • 10. 发明授权
    • Polylysine conjugates
    • 聚赖氨酸共轭物
    • US5595897A
    • 1997-01-21
    • US288681
    • 1994-08-10
    • Patrick MidouxPatrick ErbacherAnnie-Claude Roche-DegremontMichel Monsigny
    • Patrick MidouxPatrick ErbacherAnnie-Claude Roche-DegremontMichel Monsigny
    • A61K47/48C12N15/87C07K1/00C07K1/107C12N15/00C12N15/88
    • C12N15/87A61K47/48315
    • The invention concerns a complex between at least one negatively charged nucleic acid and at least one positively charged polymeric conjugate, the link between the nucleic acid and the polymeric conjugate being electrostatic in nature, the polymeric conjugate containing a polymer formed from monomer components having free NH.sub.3.sup.+ functions of the aforementioned components and being as follows:--the free NH.sub.3.sup.+ functions from the aforementioned components are substituted in a ratio of at least 10%, advantageously from 45% to 70%, particularly 60%, by noncharged residues leading to a reduction of positive charges in comparison to the same nonsubstituted polymeric conjugate, facilitating the release of nucleic acid by the dissociation of the complex,--the aforementioned residues possess in addition the following properties:.fwdarw.they contain at least one hydroxyl group,.fwdarw.they do not correspond to a recognition signal recognized by a cellular membrane receptor,--the free NH.sub.3.sup.+ functions from the above mentioned components and/or the hydroxyl groups of the above mentioned residues are also able to be substituted by at least one molecule which constitutes a recognition signal recognized by a cellular membrane receptor, under the condition that the polymeric conjugate contains at least 30% free NH.sub.3.sup.+ functions.
    • 本发明涉及至少一个带负电荷的核酸和至少一个带正电荷的聚合物缀合物之间的复合物,核酸和聚合物缀合物之间的连接本质上是静电的,所述聚合物缀合物含有由具有游离NH 3+的单体组分形成的聚合物, 上述组分的功能如下: - 上述组分的游离NH 3+官能团以至少10%,有利地为45%至70%,特别是60%的比例被非电荷残基取代,导致降低 与相同的非取代的聚合物缀合物相比,正电荷有利于通过络合物的解离释放核酸,上述残基另外具有以下性质: - >它们含有至少一个羟基, - >它们不 对应于由细胞膜受体识别的识别信号, - 来自a的游离NH 3+功能 所述提及的组分和/或上述残基的羟基也能够被至少一种构成由细胞膜受体识别的识别信号的分子取代,条件是聚合物缀合物含有至少30%的游离 NH3 +功能。