Figure 3.
Systemic IFN-γ was significantly induced by the RT/αPD-1 double therapy, but not the RT/αPD-1/IDO1i triple therapy. The blood serum collected from KPC orthotopic implantation model treated with combinational therapy was analyzed by Luminex cytokine profile. (A) IFN-γ, (B) IL-22, (C) IL-5, (D) sCD40L. Data represent mean±SEM of four mice per treatment group that was repeated twice. *P<0.05; NS, not significant, by unpaired t-est and one-way ANOVA. ANOVA, analysis of variance; IDO1, indoleamine 2,3-dioxygenase 1; IFN-γ, interferon-γ; IL-22, interleukin-22; RT, radiation therapy.