Targeting the immune privilege of tumor-initiating cells to enhance cancer immunotherapy
Yang et al. identify CD49f as a prominent tumor-initiating cells (TIC) marker in HCC and reveal a reciprocal loop between CD49f-high TICs and neutrophils that promotes tumor immune evasion by enhancing CD155 expression. They further demonstrate that blocking CD155 can improve the effectiveness of anti-PD-1 therapy, offering new therapeutic insights against HCC.