miR-106a antagomiR inhibited HT29 cell proliferation. MTT assay showed that, there was no significant difference of HT29 cell proliferation between control group and miR-NC antagomiR group, which was obviously decreased by miR-106a antagomiR. **represents P<0.01 antagomiR vs. Control and NC. miR, microRNA; NC, negative control; MTT assay, 3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay.