The present invention provides a micelle comprising an amphiphilic block copolymer, said amphiphilic block copolymer consisting of (a) a hydrophobic polymer attached to the 5' end of a first nucleic acid molecule, wherein said first nucleic acid molecule is hybridized with a second nucleic acid molecule, wherein a targeting unit capable of selectively binding to a specific cell type and/or tissue is attached to the 5' end of said second nucleic acid molecule; and/or (b) a hydrophobic polymer attached to the 3' end of a first nucleic acid molecule, wherein said first nucleic acid molecule is hybridized with a second nucleic acid molecule, wherein a targeting unit capable of selectively binding to a specific cell type and/or tissue is attached to the 3' end of said second nucleic acid molecule.
本发明提供了一种包含两亲嵌段共聚物的胶束,所述两亲嵌段共聚物包括(a)连接到第一核酸分子5'端的疏
水性聚合物,其中所述第一核酸分子与第二核酸分子杂交,其中能够选择性结合到特定细胞类型和/或组织的靶向单元连接到所述第二核酸分子的5'端;和/或 (b) 连接到第一核酸分子 3' 端的疏
水聚合物,其中所述第一核酸分子与第二核酸分子杂交,能够选择性结合到特定细胞类型和/或组织的靶向单元连接到所述第二核酸分子的 3' 端。