Abstract: The integrin is a family of membrane receptor proteins,which is composed of heterologous dimer,and can identify the sequence RGD.Integrin excessive expressed in tumor cells and angiogenesis.Using their special relationship among them,the RGD as the carrier,combined with the radioactive tracer, antineoplastic drugs and other substances,which has tumoraffin imaging,targeted anticancer therapy,anti-inflammatory,anti depression effect and bone and nerve repair, and so on.

Key words: Arg-Gly-Asp, Integrin, Molecular image, antineoplastic, Anti-inflammatory