Suppression of local invasion of ameloblastoma by inhibition of matrix metalloproteinase-2 in vitro.

Abstract:

BACKGROUND:Ameloblastomas are odontogenic neoplasms characterized by local invasiveness. This study was conducted to address the role of matrix metalloproteinase-2 (MMP-2) in the invasiveness of ameloblastomas. METHODS:Plasmids containing either MMP-2 siRNA or tissue inhibitor of metalloproteinase-2 (TIMP-2) cDNA were created and subsequently transfected into primary ameloblastoma cells. Zymography, RT-PCR, and Western blots were used to assess MMP-2 activity and expression of MMP-2 and TIMP-2, as well as protein levels. RESULTS:Primary cultures of ameloblastoma cells expressed cytokeratin (CK) 14 and 16, and MMP-2, but only weakly expressed CK18 and vimentin. MMP-2 mRNA and protein levels were significantly inhibited by RNA interference (P < 0.05). Both MMP-2 siRNA and TIMP-2 overexpression inhibited MMP-2 activity and the in vitro invasiveness of ameloblastoma. CONCLUSION:These results indicate that inhibition of MMP-2 activity suppresses the local invasiveness of ameloblastoma cells. This mechanism may serve as a novel therapeutic target in ameloblastomas pursuant to additional research.

journal_name

BMC Cancer

journal_title

BMC cancer

authors

Wang A,Zhang B,Huang H,Zhang L,Zeng D,Tao Q,Wang J,Pan C

doi

10.1186/1471-2407-8-182

subject

Has Abstract

pub_date

2008-06-30 00:00:00

pages

182

issn

1471-2407

pii

1471-2407-8-182

journal_volume

8

pub_type

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