Inhibition of miR-630 increased radiosensitivity of cervical cancer cells. The radioresistant cervical cancer cell variants, including Hela-NDRG2 (A), Hela-R11 (B) and Siha-R15 (C), were transfected with miR-630 specific inhibitors (630-I) and exposed to irradiation. The survival fractions were determined by colony-forming assay as described in “Materials and methods”. Data was expressed as mean ± SD of triplicates in one experiment. Shown was representative of 3 independent experiments.