Immune checkpoint inhibitor combination strategies

CombinationEffects
ICI + ICIPromote T cell activation and the immune response to tumor cells
ICI + TTIncrease T-cell infiltration and IFN-gamma expression, besides its specific action on the target
ICI + ChTReduce the number and activity of immune-suppressive cells and stimulate tumor-specific immune responses by inducing the immunogenic cell death
ICI + RTICI enhances the immunogenic effects of RT and RT reduces the number and activity of immune-suppressive cells and remodeling of the TME by secreting inflammatory factors
ICI + AABoost immune cell infiltration, elevate adhesion molecules, promote antigen presentation and reduce Treg immersion
ICI + ACTIncrease IFN-gamma-expression
ICI + nanomedicineTransform “deserted tumors” to “inflamed tumors” by boosting T-cell priming and immersion

ICI: immune checkpoint inhibitor; TT: targeted therapy; IFN: interferon; ChT: Chemotherapy; RT: radiotherapy; TME: tumor microenvironment; AA: anti-angiogenesis; ACT: adoptive cellular therapy