We will describe recent findings supporting unique genotype-immunophenotype relationships in iCCA, and the existence of functionally heterogenous subsets of cancer-associated fibroblasts. The ultimate goal is to provide an exhaustive overview of current knowledge and a provoking discussion of therapeutic implications and future directions.
Notably, CALB2 knockdown significantly sensitized CCA tumors to gemcitabine plus radiotherapy, an effect attenuated by KRT7 overexpression. These findings define a novel H3K4 methylation/CALB2/calcium/NF-κB/KRT7/PD-L1 signaling axis that drives immune suppression and therapy resistance in CCA, highlighting its potential as a multi-target strategy for combined immunotherapy and chemoradiotherapy.
We defined a novel ISG signature in iCCA and identified EGR1 as a critical driver of senescent tumor cells in iCCA.These findings offer new insights into senescent tumor cells and the immunosuppressive microenvironment.