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- W2033385058 abstract "In order to target liposomes to cells expressing at their surface a galactose-binding site we have prepared liposomes containing new synthetic galactolipids. Neo-galactosylated liposomes were prepared by covalently coupling beta-D-1-thiogalactopyranoside residues, substituted with a hydrophilic spacer-arm and functionalized with a sulfhydryl group, to preformed large unilamelar vesicles containing 4-(p-maleimidophenyl)butyryl phosphatidylethanolamine. The vesicles, having a galactose content above a threshold value of about 5 mol%, could be aggregated with Ricinus communis agglutinin. This aggregation was reversed by addition of excess free methyl beta-D-galactopyranoside, indicating that the surface glucidic moieties of these liposomes were accessible to the lectin. Compared to the control vesicles, the neo-galactosylated liposomes (containing 15 mol% galactose) presented in vitro an increased binding to cell possessing a beta-D-galactose specific receptor, i.e. resident mouse peritoneal macrophages. At 4 degrees C, the specific binding was about 2-fold, whereas at 37 degrees C it was increased to about 4-5-fold. This differential binding was largely unaffected by serum and, interestingly was much dependent on the degree of galactosylation of the liposomes, i.e. a threshold value of 5 mol% was needed to observe an increased binding of the targeted vesicles to the macrophages." @default.
- W2033385058 created "2016-06-24" @default.
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- W2033385058 date "1988-12-01" @default.
- W2033385058 modified "2023-09-25" @default.
- W2033385058 title "Preparation of neo-galactosylated liposomes and their interaction with mouse peritoneal macrophages" @default.
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- W2033385058 doi "https://doi.org/10.1016/0005-2736(88)90461-0" @default.
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