RNAi-mediated MMP-9 silencing inhibits mouse melanoma cell invasion and migration in vitro and in vivo.

Abstract:

:MMP-9 participates in tumour growth, invasion, metastasis and vascularisation. Thus, inhibition of MMP-9 may be involved in the process of tumourigenesis. We have investigated the effect of RNAi-mediated MMP-9 silencing on inhibiting invasion and migration of mouse melanoma cell B16. A specific and optimised siRNA vector was used to target MMP-9 mRNA synthesis in B16 cells. Changes of invasion and migration capability of B16 cell were examined after transfection at different time, and a footpad tumour model was performed to measure the effect of MMP-9 siRNA on melanoma tumourigenesis in vivo. In vitro, down-regulation of MMP-9 expression significantly inhibited B16 cell invasion and migration. In vivo, intratumoural injection of plasmid DNA expressing MMP-9 siRNA every 3 days for three times remarkably inhibited melanoma growth and also suppressed tumour metastasis. The results indicate that RNA-mediated targeting of MMP-9 may have promising applications for the treatment of melanoma.

journal_name

Cell Biol Int

authors

Tang ZY,Liu Y,Liu LX,Ding XY,Zhang H,Fang LQ

doi

10.1002/cbin.10107

subject

Has Abstract

pub_date

2013-08-01 00:00:00

pages

849-54

issue

8

eissn

1065-6995

issn

1095-8355

journal_volume

37

pub_type

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