Objective: To study the effects of angiostatin (AS) gene mediated by liposome on human pancreatic cancer cell line SW1990. Methods: Angiostatin gene was cloned into the eu- karyotic expression vector pRC/CMV. The recombi- nant of pRC/CMV-AS was introduced into the pan- creatic cancer cell line, SW1990. The mechanism of anti-tumor was studied and tested. Results: The eukaryotic expression vector pRC/ CMV-AS was identified by the restriction digest. pRC/CMV-AS was stably integrated into the target cells and expressed by Western blot and drug-sensi- tivity tests, and inhibited the vascular endothelial cells proliferation in vitro. In addition, the effects of the angiostatin vector on reducing the volume of tumors implanted in nude mouse models were also noted. Conclusion: This study demonstrated that the recom- binant pRC/CMV-AS mediated by liposome may play a potential role in the treatment of pancreatic cancer in the future.
