As reported by a previous study (31 (link)), we also used the Magna RIP RNA-Binding Protein Immunoprecipitation kit (Millipore, Billerica, USA) to conduct the anti-AGO2 RIP assay. Extracts of the treated SK-MES-1R and NCI-H226R cells in RIP buffer were incubated with normal rabbit IgG (Proteintech Group, Inc.; Wuhan, China) and AGO2 antibodies (Cell Signaling Technology), which were combined with magnetic beads. We isolated the immunoprecipitated RNAs and examined genes using RT-qPCR.