Conjugation of sialic acid to cholesterol-substituted polysaccharides has been carried out. Liposomes, which are coated with sialic acid-modified polysaccharide, were significantly aggregated by sialic acid-specific lectin, and inhibition of phagocytosis of the liposomes by phagocytic cells was observed. Appropriate treatment of the liposomes with a neuraminidase made the efficient removal of sialic acid from the polysaccharide on the liposomal surface.
已将
唾液酸与
胆固醇取代的
多糖结合。涂覆有
唾液酸修饰
多糖的脂质体被
唾液酸特异性凝集素显著聚集,并观察到吞噬细胞对脂质体的吞噬作用受到抑制。对脂质体进行适当的
神经氨酸酶处理,可以有效去除脂质体表面
多糖上的
唾液酸。