To confirm the involvement of Ku80 in the anti-tumor effects of hsa-miR-526b, we transfected Ku80-expressing lentiviral vector (GV320-Ku80) and empty lentiviral vector (GV320) into A549-miR-526b #1 cells for further experiments (Fig. 7A). The gene discussed is XRCC5; the disease is neoplasm.