XPO1-mediated TRIM21 nuclear export reprograms TREM2+ macrophage polarization by targeting IRF3 to augment anti-PD-1 efficacy in small cell lung cancer
An XPO1-TRIM21-TNFSF15 axis is defined that promotes the polarization of immunosuppressive TREM2+ macrophages, which ultimately orchestrates immune exclusion by impairing antigen presentation and enhances the efficacy of anti-PD1 immunotherapy in mice.