Hybrids of fibronectin-related peptides [Arg-Gly-Asp (RGD), Arg-Gly-Asp-Ser (RGDS)] and poly(ethylene glycol) (PEG) were prepared and their inhibitory effects on experimental metastasis in mice were examined. The inhibitory effect of RGD was markedly potentiated by hybrid formation with poly(ethylene glycol) #6000. As to inhibitory effect, RGD was more potent than RGDS and RGD PEG hybrids were superior to RGDS PEG hybrids. Hybrid formation with PEG #6000 was more effective than that with PEG #4000.
将整合素连接肽[精-甘-天冬 (RGD),精-甘-天冬-丝 (RGDS)] 与聚
乙二醇 (P
EG) 的缀合物制备出来,并研究了它们对小鼠实验性转移的抑制作用。与聚
乙二醇 #6000 形成的缀合物显著增强了 RGD 的抑制效果。在抑制作用方面,RGD 比 RGDS 更强,而 RGD P
EG 缀合物优于 RGDS P
EG 缀合物。与 P
EG #4000 相比,与 P
EG #6000 形成的缀合物效果更佳。