Impact of silencing of lncRNAs on PD-L1 and CD155 expression in Huh7 cell lines. Efficient knockdown of lncRNAs was evaluated, where (A) CCAT-1, (B) H19, and (C) MALAT-1 were markedly repressed in Huh7 cells transfected with respective lncRNA siRNA to ensure transfection efficiency. PD-L1 and CD155 was assessed upon knocking down of (D) CCAT-1, (E) H19, and (F) MALAT-1 in Huh7 cells compared to mock and scrambled mock cells. *p < 0.05, **p < 0.01, ***p < 0.001.