[ 34 ] The mIHC analysis of 4T1.2 tumors revealed a significant increase in CD4 + T cell density in the MACTIDE‐V‐treated group compared to CtrlPep‐V and PBS, an increasing trend in CD8 + T cell density with both conjugates and no differences in Treg density (Figure 7H,I ).
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Peptide-Drug Conjugate for Therapeutic Reprogramming of Tumor-Associated Macrophages in Breast Cancer.
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A decreasing trend in the immunosuppressive FOXP3 + PD‐1 + population among CD4 + T cells was observed in the MACTIDE‐V treated group compared to the other experimental conditions (Figure 8H ).
Although no significant differences were observed in mice survival (Figure S3 , Supporting Information), MACTIDE‐V followed by tumor irradiation slowed down the tumor growth compared to the control groups PBS (+), CtrlPep‐V (‐), CtrlPep‐V (+) and MACTIDE (‐) (“+” denotes irradiated and “‐” denotes non‐irradiated), although these differences did not reach statistical significance.