Lentiviral and HCV(JFH1) particle was propagated and tittered as described previously(20 (link)). Huh7 subgenomic replicon cells were established through G418(400ug/ml) selection upon in vitro transcribed subgenome transfection. HCV pseudo-particle system was propagated as previously described(21 (link)). Sendai virus(SeV) was obtained from Charles River Laboratories and the infection(10–100 HAU/ml) was conducted in serum-free DMEM for 1 hour at 37C.