非小细胞肺癌患者血清MMP-9表达及siRNA靶向抑制A549细胞侵袭与转移的研究

被引：7

作者：

杨希

朱君飞

吴文龙

唐猛

机构：

[1] 台州市中心医院呼吸科

来源：

中华肿瘤防治杂志 | 2012年 / 19卷 / 08期

关键词：

癌,非小细胞肺; MMP-9; siRNA; 转移;

D O I：

10.16073/j.cnki.cjcpt.2012.08.010

中图分类号：

R734.2 [肺肿瘤];

学科分类号：

100214 ;

摘要：

目的:探讨非小细胞肺癌患者血清中MMP-9表达与肿瘤转移的关系;MMP-9siRNA对肺腺癌细胞系A549中MMP-9表达及细胞侵袭与转移抑制作用的影响。方法:ELISA法检测32例非小细胞肺癌(NSCLC)患者及20名健康者空腹血清MMP-9浓度,同时设计合成针对MMP-9的特异性siRNA,采用oligofectamine转染A549细胞,RT-PCR法检测转染细胞后MMP-9mRNA的表达,Transwell实验检测细胞侵袭情况。结果:NSCLC患者血清中MMP-9浓度〔(63.44±7.84)ng/mL〕比正常对照组〔(21.57±3.29)ng/mL〕明显升高(P<0.01),且浓度随病理分期增加而增强〔Ⅰ/Ⅱ:(45.40±5.30)ng/mL,Ⅲ/Ⅳ:(89.80±5.02)ng/mL,P<0.01〕,发生淋巴结转移的患者血清MMP-9浓度〔(82.26±5.09)ng/mL〕明显高于未发生淋巴结转移〔(35.92±4.68)ng/mL〕的患者P<0.01;RT-PCR法显示,转染MMP-9siRNA后,细胞中MMP-9mRNA表达较阴性对照组和空白组明显降低,P<0.05。RNA干扰MMP-9基因后A549细胞的侵袭能力也有明显下降,P<0.01。结论:MMP-9可作为NSCLC患者有无发生浸润转移的良好预测指标,靶向MMP-9的siRNA不仅能特异性的降低MMP-9mRNA及蛋白的表达,且能抑制人A549细胞的侵袭和迁移。

引用

页码：591 / 594

页数：4

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