Lipid vesicles comprising a lipid bilayer which includes analogs of cell-surface receptors such as dicetyl phosphate; stearylamine; 6-(5-cholesten-3.beta.-yloxy) hexyl 1-thio-.beta.-L-fucopyranoside; 6-(5-cholesten-3.beta.-yloxy) hexyl 1-thio-.beta.-D-galactopyranoside; 6-(5-cholesten-3.beta.-yloxy)hexyl 1-thio-.alpha.-D-mannopyranoside; 6-(5-cholesten-3-yloxy)hexyl 2-acetamido-2-deoxy-1-thio-.beta.-D-galactopyranoside; 6-(5-cholesten-3.beta.-yloxy)hexyl 6-amino-6-deoxy-1-thio-.beta.-D-galactopyranoside; or 6-(5-cholesten-3.beta.-yloxy)hexyl 6-amino-6-deoxy-1-thio-.alpha.-D-mannopyranoside; cholesterol and distearoyl phospatidylcholine, and an effective amount of physiologically compatible radioactive tracer, cytotoxic or therapeutic agent as a part of the vesicles. The vesicles of this invention can be administered to the human host and have been found to release the contents of the vesicles in a predetermined manner, i.e., controlled release, and in some cases, to be rapidly concentrated in the lymphatic system and/or liver, lungs or spleen of the host.
脂质囊泡包含一个脂质双层,其中包括细胞表面受体的类似物,如
二十二烷基
磷酸; 硬脂酰胺; 6-(5-胆甾-3-β-氧基)己基1-
硫代-β-
L-岩藻糖苷; 6-(5-胆甾-3-β-氧基)己基1-
硫代-β-
D-半乳糖苷; 6-(5-胆甾-3-β-氧基)己基1-
硫代-α-
D-甘露糖苷; 6-(5-胆甾-3-氧基)己基2-乙酰
氨基-2-脱氧-1-
硫代-β-
D-半乳糖苷; 6-(5-胆甾-3-β-氧基)己基6-
氨基-6-脱氧-1-
硫代-β-
D-半乳糖苷; 或6-(5-胆甾-3-β-氧基)己基6-
氨基-6-脱氧-1-
硫代-α-
D-甘露糖苷;
胆固醇和
二十二烷酰
磷脂酰
胆碱,以及生理兼容的放射性示踪剂、细胞毒性或治疗剂量作为囊泡的一部分。这种发明的囊泡可以被用于人体宿主,并已经发现以预定的方式释放囊泡的内容,即控制释放,并且在某些情况下,在宿主的淋巴系统和/或肝脏、肺或脾脏中迅速浓缩。