[Inhibitory effect of MT1-MMP antisense nucleotide on invasion of human highly metastatic ovarian cancer cell line SW626].

Abstract

BACKGROUND & OBJECTIVE:

Membrane-type 1 matrix metalloproteinase (MT1-MMP/MMP-14) is a newly discovered enzyme, which plays a key role in tumor metastasis. This study was to observe inhibitory effect of MT1-MMP antisense nucleotide on proliferation and invasive potential of human highly metastatic ovarian carcinoma cell line SW626.

METHODS:

Reverse transcriptase-polymerase chain reaction (RT-PCR) was used to amplify MT1-MMP cDNA fragments with 2 different restriction sites at its 5c-end. RT-PCR products were cloned into plasmid pcDNA3.1 in antisense direction. The recombinant pMMP14as was transfected into SW626 cells. Changes of cell proliferation, MT1-MMP protein expression, activities of MMP-2 and MMP-9, and cell invasion ability were detected by MTT assay, Western blot, optimized gelatin zymography, and matrigel in vitro invasion assay, respectively.

RESULTS:

Antisense MT1-MMP eukaryotic expression vector pMMP14as was constructed successfully. After 48-h transfection with pMMP14as, proliferation of pMMP14as-transfected SW626 cells was significantly lower than that of control cells. Compared with control cells, the expression of endogenous MT1-MMP protein in pMMP14as-transfected cells was decreased with a inhibition rate of 65.8%. The activation of proMMP-2 was remarkably inhibited, and the mean invasive cell percentage was (63.3+/-5.8)% in pMMP14as-transfected cells, which was far less than (97.6+/-7.5)% in control cells (P< 0.05).

CONCLUSION:

Both cell proliferation and invasive potential of SW626 cells were inhibited effectively by antisense MT1-MMP, suggesting that MT1-MMP may be a proper molecular target of anti-invasion therapy for human ovarian cancer.

• Authors: Ming-Fu Wu, Guo-Ning Liao, Ping Jia, Ling Xi, Yun-Ping Lu, Ding Ma
• Journal: Ai zheng = Aizheng = Chinese journal of cancer (Ai Zheng) Vol. 23 Issue 11 Pg. 1263-6 (Nov 2004) China
• PMID: 15522170 (Publication Type: English Abstract, Journal Article, Research Support, Non-U.S. Gov't)

Chemical References

• Oligonucleotides, Antisense
• Recombinant Proteins
• Matrix Metalloproteinases, Membrane-Associated
• Metalloendopeptidases
• Matrix Metalloproteinase 2

Topics

• Cell Line, Tumor
• Cell Proliferation
• Female
• Humans
• Matrix Metalloproteinase 2 (metabolism)
• Matrix Metalloproteinases, Membrane-Associated
• Metalloendopeptidases (biosynthesis, genetics)
• Neoplasm Invasiveness
• Oligonucleotides, Antisense
• Ovarian Neoplasms (metabolism, pathology)
• Plasmids
• Recombinant Proteins (biosynthesis, genetics)
• Transfection