PMID- 11783013 OWN - NLM STAT- MEDLINE DCOM- 20020226 LR - 20081121 IS - 0253-3766 (Print) IS - 0253-3766 (Linking) VI - 23 IP - 2 DP - 2001 Mar TI - [Experimental study of anti-metastasis effect of urokinase amino-terminal fragment gene on human breast cancer cells]. PG - 115-7 AB - OBJECTIVE: To explore the suppressive effects of urokinase amino-terminal fragment (ATF) gene on metastatic potential of human breast cancer cell line MCF-7. METHODS: A pcDNA3-ATF plasmid containing ATF cDNA under CMV promotor/enhancer control was constructed and transfected into MCF-7 cells by lipofectin. The expression of of uPA/uPAR and ATF in MCF-7 cells were analyzed by RT-PCR and Western blot. The effect of ATF expression on invasiveness in vitro, tumorigenesis and metastasis in vivo of MCF-7 cell was investigated. RESULTS: MCF-7 cells displayed an overexpression of uPA/uPAR. Expression of ATF was detected after ATF gene-transfection. The invasive capacity of ATF gene-transfected MCF-7 cells was decreased significantly. Although the tumorigenesis was not affected, the in vivo metastasis of ATF gene-transfected MCF-7 cells was remarkably inhibited. CONCLUSION: Suppression of invasiveness and metastasis of ATF-transfected MCF-7 cells is perhaps due to a competitive inhibition of interaction with endogenous uPA/uPAR. FAU - Zhu, F AU - Zhu F AD - Beijing Institute of Radiation Medicine, Beijing 100850, China. FAU - Xing, G AU - Xing G FAU - He, F AU - He F LA - chi PT - English Abstract PT - Journal Article PL - China TA - Zhonghua Zhong Liu Za Zhi JT - Zhonghua zhong liu za zhi [Chinese journal of oncology] JID - 7910681 RN - 0 (DNA, Complementary) RN - 0 (PLAUR protein, human) RN - 0 (Peptide Fragments) RN - 0 (Plaur protein, mouse) RN - 0 (Receptors, Cell Surface) RN - 0 (Receptors, Urokinase Plasminogen Activator) RN - 0 (Recombinant Fusion Proteins) RN - EC 3.4.21.73 (Urokinase-Type Plasminogen Activator) SB - IM MH - 3T3 Cells MH - Animals MH - Breast Neoplasms/genetics/pathology/*therapy MH - DNA, Complementary/genetics MH - Gene Expression Regulation, Neoplastic MH - Humans MH - Mice MH - Mice, Inbred BALB C MH - Mice, Nude MH - Neoplasm Invasiveness MH - Neoplasm Metastasis/genetics/*prevention & control MH - Neoplasm Transplantation MH - Peptide Fragments/genetics MH - Receptors, Cell Surface/genetics MH - Receptors, Urokinase Plasminogen Activator MH - Recombinant Fusion Proteins/genetics MH - Transfection MH - Tumor Cells, Cultured MH - Urokinase-Type Plasminogen Activator/chemistry/*genetics MH - Xenograft Model Antitumor Assays EDAT- 2002/01/11 10:00 MHDA- 2002/02/28 10:01 CRDT- 2002/01/11 10:00 PHST- 2002/01/11 10:00 [pubmed] PHST- 2002/02/28 10:01 [medline] PHST- 2002/01/11 10:00 [entrez] PST - ppublish SO - Zhonghua Zhong Liu Za Zhi. 2001 Mar;23(2):115-7.