HCT116 miR-27a_KD, SW480 miR-27a_KD cells and HT29 miR-27a_OE cells and relative controls were treated with 5-Fluorouracil [50 μg/ml] or Oxaliplatin [5 μg/ml] and cytotoxicity assessed after 72 h by the Prestoblue assay (Thermo Fisher) following the manufacturer’s instructions. Efficacy of drug treatments was calculated by the Growth Rate 50 (GR50), as described in ref. 30 Treated cells were evaluated for apoptosis by flow cytometry using the PE-Annexin V Apoptosis Detection I-kit, following the manufacturer’s instructions (559763, BD Biosciences, Franklin Lakes, NJ, USA). The results were analysed with the FACSuite Software v.1.0.5.3841 (BD Biosciences).
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