Fig. 2: Downregulation of circZNF609 impairs HCC cell proliferation, metastasis, and stemness.

a The knockdown efficiency of circZNF609 was measured by RT-qPCR in HCCLM3 and MHCC-97H cells. b, c CCK-8 and colony formation assays were carried out to measure the proliferation ability of transfected cells. d Sphere formation assay was used to evaluate cell sphere formation ability in HCCLM3 and MHCC-97H cells transfected with different plasmids. e–g The apoptosis capability of transfected cells was analyzed by flow cytometry, TUNEL, and western blot analyses. h Transwell assay was performed to examine the migration and invasion abilities of transfected cells. I Western blot analysis depicted that knocking down circZNF609 could suppress cell metastasis, EMT, and stemness. **P < 0.01.