Amino Acids and Peptides. XXVI. Laminin-Related Peptide Poly(Ethylene Glycol) Hybrids and Their Inhibitory Effect on Experimental Metastasis.
作者:Koichi KAWASAKI、Machiko NAMIKAWA、Toyohiko MIZUTA、Sachie INOUE、Mitsuko MAEDA、Masa KAKIUCHI、Yasuhiro IZUNO、Susumu YAMAMOTO、Yasuo TSUTSUMI、Shinsaku NAKAGAWA、Tadanori MAYUMI
DOI:10.1248/bpb.18.1714
日期:——
Laminin-related peptide poly (ethylene glycol) hybrid, Tyr-Ile-Gly-Ser-Arg-aminopoly (ethylene glycol) was prepared by the solution method and carboxylated poly (ethylene glycol)-Tyr-Ile-Gly-Ser-Arg was prepared by the solid phase method. Their inhibitory effects on experimental tumor metastasis were examined in mice. The inhibitory effect of Tyr-Ile-Gly-Ser-Arg was significantly potentiated by hybrid formation with poly (ethylene glycol) either at amino- or carboxyl terminals of the peptide. Of the hybrids, Tyr-Ile-Gly-Ser-Arg-amino (polyethylene glycol) #6000 hybrid exhibited about 10 times more potent anti-metastatic effect than the peptide itself. The inhibitory effect of a mixture of the carboxylated poly (ethylene glycol) hybrid and Arg-Gly-Asp-aminopoly (ethylene glycol) hybrid also exhibited an inhibitory effect.
通过溶液法合成了层粘连素相关肽聚乙二醇杂化物,酪氨酸-异亮氨酸-甘氨酸-丝氨酸-精氨酸-氨基聚乙二醇;通过固相法合成了羧基化聚乙二醇-酪氨酸-异亮氨酸-甘氨酸-丝氨酸-精氨酸。在小鼠中检测了它们对实验性肿瘤转移的抑制作用。酪氨酸-异亮氨酸-甘氨酸-丝氨酸-精氨酸与聚乙二醇在肽的氨基或羧基末端形成杂化物,其抑制作用显著增强。在杂化物中,酪氨酸-异亮氨酸-甘氨酸-丝氨酸-精氨酸-氨基(聚乙二醇)#6000杂化物显示出比肽本身强约10倍的抗转移作用。羧基化聚乙二醇杂化物和精氨酸-甘氨酸-天冬氨酸-氨基聚乙二醇杂化物的混合物也显示出抑制作用。