MiR-186-5p inhibits HCC cell proliferation, migration, and invasion (a) Correlation between METTL3 protein and mRNA expression in HCC tissues (n = 28). (b) Online databases TargetScan, miRWalk, and Starbase are used to predict possible miRNAs. (c) miR-186-5p levels in HCC tissues are detected using qRT-PCR (n = 28). (d) miR-186-5p mimics or inhibitors increase or decrease miR-186-5p levels. (e) Clone formation in cells treated with miR-186-5p mimic or inhibitor. (f) Invasion and migration of cells treated with miR-186-5p mimic or inhibitor (bar = 100 μm). Data represent three separate experiments and are expressed as mean ± SEM. ***p < 0.001, *p < 0.05, **p < 0.01.“NC”represents the blank control of“miR-186-5p mimic.” “inhibitor NC″represents the blank control of “miR-186-5p inhibitor.”