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  • Title: Mode of binding of adriamycin with sulfatide-containing liposomes.
    Author: Takano M, Kojima N, Yagi K.
    Journal: Biochem Int; 1988 Jul; 17(1):77-86. PubMed ID: 3190718.
    Abstract:
    Association constants and maximum binding numbers of sulfatide- and phosphatidylserine (PS)-containing liposomes for their binding with adriamycin (ADM) were determined by the column equilibration method. Although these liposomes have two kinds of binding sites, hydrophobic and electrostatic, the majority of ADM molecules was associated with the liposomes via their latter binding sites. Since the association constant for the electrostatic binding of ADM was smaller in sulfatide-containing liposomes (3 x 10(3) M-1) than in PS-containing ones (1.1 x 10(4) M-1), high efficiency of sulfatide-containing liposomes for the entrapment of ADM might be explained by the effect of sulfatide making the liposomes rigid, thereby preventing the leakage of the entrapped ADM.
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