Covalent conjugates of biologically-active compounds with amino acids and amino acid derivatives for targeting to physiologically-protected sites
申请人:——
公开号:US20030087803A1
公开(公告)日:2003-05-08
This invention herein describes a method of facilitating the entry of drugs into cells and tissues at physiologically protected sites at pharmacokinetically useful levels and also a method of targeting drugs to physiologically protected sites in vivo. Also provided are drug conjugates with an amino acid or derivative thereof for facilitating such targeted drug delivery. The conjugates and methods of this invention provide an advance over other drug targeting methods known in the prior art, because the invention provides drug concentrations in such physiologically protected sites that can reach therapeutically-effective levels after administration of systemic levels much lower than are currently administered to achieve a therapeutic dose. This technology is appropriate for use with psychotropic, neurotropic, neurological, antibiotic, antibacterial, antimycotic, antiviral, antiproliferative or antineoplastic drugs, agents and conjugates, for rapid and efficient introduction of such agents across, e.g., the blood-brain barrier. Further, the invention provides means for retention and prolonged enzymatic release of such drugs, agents and conjugates comprising the conjugates of the invention, in the brain and central nervous system and other physiologically-protected sites.
本发明描述了一种促进药物进入细胞和组织的方法,在生理保护部位以药代动力学有用的水平,并且描述了一种将药物靶向到体内生理保护部位的方法。还提供了带有氨基酸或其衍生物的药物共轭物,用于促进这种靶向药物传递。本发明的共轭物和方法相对于先前已知的其他药物靶向方法具有进步性,因为该发明提供了在这些生理保护部位的药物浓度,这些浓度可以在系统水平远低于目前用于达到治疗剂量的水平后达到治疗有效水平。这项技术适用于用于精神药物、神经药物、神经学药物、抗生素、抗菌药物、抗真菌药物、抗病毒药物、抗增殖或抗肿瘤药物、药剂和共轭物,用于快速高效地引入这些药剂跨越例如血脑屏障。此外,该发明提供了在大脑和中枢神经系统以及其他生理保护部位中保留和延长这些药物、药剂和共轭物的酶释放的手段。