(A) RT-PCR and Western blotting assay was used to assess the effects of C1QTNF6 on the expressions of MMP-2 and MMP-9. (B) TUNEL assay was performed to evaluate the effects of C1QTNF6 on the apoptosis of tumors. (C) The expression level of apoptosis-related proteins caspase-3, caspase-9, Bcl-2 and BAX in different groups. **P<0.01 vs. si-NC group, ##P<0.01 vs. pc-NC group.