(A) HCV was inoculated into Huh7-122KO and Huh7-122KOR cells at an MOI of 3, and intracellular HCV-RNA levels (left panel) and infectious titers in the culture supernatants (right panel) were determined by qRT-PCR and focus formation assay, respectively. (B) HCV-RNA replication was inhibited by the treatment with IFNα, BILN, BMS790052, PSI7977 and anti-CD81 antibody. (C) HCV replication in Huh7-122KO cells was resistant to treatment with an miR-122 inhibitor, LNA (HCV-RNA replication: left; infectious titer: right). Error bars indicate the standard deviation of the mean and asterisks indicate significant differences (*P < 0.05; **P < 0.01) versus the results for the control.