In order to reveal whether MT2-MMP expression is operative in human lung cancer and its underlying physio-pathological role, in the present study, we examined both mRNA and protein expression levels of MT2-MMP in non-small cell lung caner (NSCLC) tissues and in adjacent normal tissues by using real-time RT-PCR and immunohistochemistry respectively, which showed that both MT2-MMP mRNA (P=0.0359) and protein (P<0.0001) expression levels were significantly increased in cancer tissues in contrast to adjacent normal tissues. 
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