Fig. 5. Activated CD8 T and NK cells are present in the contralateral tumor after ipsilateral CD25-targeted NIR-PIT.
(A to D) CD8 T and NK cells collected from nonirradiated left dorsal tumors in mice receiving local CD25-targeted NIR-PIT of the right dorsal tumors were analyzed for their expression of activation markers 1 day after the treatment. CD8 T and NK cells producing IFN-γ (A) and IL-2 (B) and with up-regulated CD25 (C) and CD69 (D) expression were present in the nonirradiated left tumor after CD25-targeted NIR-PIT of the right-side tumor [n = 5; *P = 0.0021 (A: CD8 T cells), P = 0.0023 (B: CD8 T cells), P = 0.0012 (D: CD8 T cells), P < 0.008 (others), Mann-Whitney test].