IFN-γ impacts MФ to trigger cytotoxic T cell responses in immunized mice.

<p>C57BL/6 mice (2–3 mice per group) were immunized twice with 1, PBS plus IgG; 2, PBS plus IFN-γ; 3, Ad-con-Mф; 4, Ad-con-Mф plus IFN-γ; 5, Ad-shA20-Mф plus IgG; or 6, Ad-shA20-Mф plus anti-IFN-γ. Two weeks after the 2^nd immunization, inguinal lymph nodes were harvested to analyze expression of granzyme B in CD4⁺ T cells (<b>A</b>) (p<0.05, shA20-Mф+ anti-IFN-γ immunization vs. shA20-Mф+IgG immunization; p<0.01, con-Mф+ IFN-γ immunization vs. con-Mф immunization) or CD8⁺ T cells (<b>B</b>) (p<0.01, shA20-Mф+ anti-IFN-γ immunization vs. shA20-Mф+IgG immunization; p<0.05, con-Mф+ IFN-γ immunization vs. con-Mф immunization) by ICS assay.