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SP1 is a direct target of miR-7 in NSCLC. (A) SP1 mRNA expression between groups in A549 and SK-MES-1 cells after transfection with blank, miR-NC, miR-7, inhibition-NC or miR-7 inhibition. (B) SP1 protein expression between groups in A549 and SK-MES-1 cells after transfection with inhibitor-NC, miR-7 inhibitor, miR-NC or miR-7. *P<0.05, **P<0.01 and ***P<0.001. SP1, specific protein 1; miR-7, microRNA-7; NSCLC, non-small cell lung cancer; NC, negative control.
