申请人:Burstein Laboratories, Inc.
公开号:US05718915A1
公开(公告)日:1998-02-17
Complexes are prepared containing two or more different effector molecules joined to each other by a joining component. At least one of the effector molecules can bind to a target molecule and at least one of the other effector molecules has therapeutic properties. The joining component can be liposomes, proteins and organic polymers including dendrimer polymers, and can be of sufficient length and/or flexibility to permit the therapeutic effector molecule to interact with a target at the same time as the binding molecules. An antiviral liposome is prepared by coupling to a liposome outer surface a hydrolytic enzyme capable of digesting a viral component and a target-binding moiety which may be a polypeptide, glycoprotein or glycoprotein fragment having specificity for viruses such as HIV-1, influenza virus and hepatitis virus. The hydrolytic enzyme may be a glycosidase, phospholipase, lipase, cholesterol esterase, nuclease or protease. A second hydrolytic enzyme and target-binding moiety may also be present, and albumin may be coupled to the liposome surface. Within the liposome may be an internal hydrolytic enzyme capable of digesting a viral component.
制备了含有两种或更多不同效应分子的复合物,这些分子通过连接组分连接在一起。至少一种效应分子可以结合到目标分子,而其他效应分子中至少一种具有治疗特性。连接组分可以是脂质体、蛋白质和有机聚合物,包括树状聚合物,可以具有足够的长度和/或柔性,以允许治疗效应分子与结合分子同时与目标分子相互作用。通过将能够消化病毒成分和具有针对HIV-1、流感病毒和肝炎病毒等病毒特异性的多肽、糖蛋白或糖蛋白片段的目标结合基团耦合到脂质体外表面,制备了一种抗病毒脂质体。水解酶可以是糖苷酶、磷脂酶、脂肪酶、胆固醇酯酶、核酸酶或蛋白酶。第二种水解酶和目标结合基团也可能存在,并且白蛋白可以耦合到脂质体表面。在脂质体内部可能含有能够消化病毒成分的内部水解酶。