单核细胞衍生的巨噬细胞和CD8 + T细胞。The macrophage compartment was heterogeneous and displayed marked enrichment in an inflammatory CCR2 + subpopulation highly expressing Cxcl9 (chemokine [C-X-C motif] ligand 9), Cxcl10 (chemokine [C-X-C motif] ligand 10), Gbp2b (interferon-induced guanylate-binding protein 2b), and Fcgr4 (Fc受体,IgG,低亲和力IV),起源于CCR2 +单核细胞。重要的是,与ICI心肌炎患者相似的表达CXCL9,CXCL10和CD16α(小鼠FCGR4的人类同源物)的巨噬细胞群体(人类的同源物)。暗示了T细胞与CXCL9 + CXCL10 +巨噬细胞之间通过IFN-γ(Interferon Gamma)和CXCR3(CXC趋化因子受体3)信号通路的相互作用。耗尽CD8 + T细胞或巨噬细胞和IFN-γ信号传导的阻断使CXCL9 + CXCL10 +
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