申请人:Genzyme Corporation
公开号:US05747471A1
公开(公告)日:1998-05-05
Novel cationic amphiphiles are provided that facilitate transport of biologically active (therapeutic) molecules into cells. The amphiphiles contain lipophilic groups derived from steroids, from mono or dialkylamines, or from ether or ester-linked alkyl groups, and cationic groups, protonatable at physiological pH, derived from amines, alkylamines or polyalkylamines. There are provided also therapeutic compositions prepared typically by contacting a dispersion of one or more cationic amphiphiles with the therapeutic molecules. Therapeutic molecules that can be delivered into cells according to the practice of the invention include DNA, RNA, and polypeptides. Representative uses of the therapeutic compositions of the invention include providing gene therapy, and delivery of antisense polynucleotides or biologically active polypeptides to cells. With respect to therapeutic compositions for gene therapy, the DNA is provided typically in the form of a plasmid for complexing with the cationic amphiphile. Novel and highly effective plasmid constructs are also disclosed, including those that are particularly effective at providing gene therapy for clinical conditions complicated by inflammation.
提供了一种新型的阳离子两性分子,可以促进生物活性(治疗性)分子进入细胞。这些两性分子包含从类固醇、单或双烷胺基、醚或酯键连接的烷基基团中衍生的亲脂基团,以及阳离子基团,可在生理pH下质子化,来自胺、烷胺或多烷基胺。还提供了通常通过将一个或多个阳离子两性分子的分散液与治疗分子接触而制备的治疗组合物。根据本发明的实践,可以将DNA、RNA和多肽等治疗分子输送到细胞中。本发明的治疗组合物的代表性用途包括提供基因治疗,以及将反义多核苷酸或生物活性多肽输送到细胞中。对于用于基因治疗的治疗组合物,DNA通常以质粒的形式提供,以与阳离子两性分子结合。还公开了新型且高效的质粒构建物,包括那些在为临床炎症并发症复杂的情况提供基因治疗方面特别有效的构建物。