Macrophage-derived CCL22 promotes an immunosuppressive tumor microenvironment via IL-8 in malignant pleural effusion
Macrophage-derived CCL22 promotes an immunosuppressive tumor microenvironment via IL-8 in malignant pleural effusion
复制标题
巨噬细胞衍生的 CCL22 通过 IL-8 在恶性胸腔积液中促进免疫抑制肿瘤微环境
DOI:
10.1016/j.canlet.2019.03.040
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发表时间:
2019-01-01
期刊:
影响因子:
9.7
通讯作者:
Zhang, Yi
中科院分区:
文献类型:
--
作者:
Wang, Dong;Yang, Li;Zhang, Yi
Immune dysfunction often occurs in malignant pleural effusion (MPE). In our previous study, TGF-beta derived predominantly from macrophages plays an important role in impairing T cell cytotoxicity in MPE. Therefore, we aimed to investigate whether other immunoregulatory cells and factors mediated TGF-beta secretion from macrophages, involved in the immunosuppressive microenvironment of MPE, and to provide clues for potential immune therapy for MPE as well. We found that CCL22 level in MPE was significantly higher than that in nonmalignant pleural effusion. The high level of CCL22 was closely associated with poor survival in MPE patients with lung cancer. CCL22 was dominantly produced by tumor-associated macrophages (TAMs) in MPE. Meanwhile, TAM-derived TGF-beta, mediated CCL22 expression in TAMs via c-Fos. CCL22 promoted the recruitment of regulatory T cells (Tregs) in MPE. Lastly, Treg-secreted high level of IL-8 further induced TGF-beta production from TAMs, and promoted the immunosuppressive tumor microenvironment in MPE. Our results indicate that macrophage-derived CCL22 plays an important role in the immunosuppressive tumor microenvironment via IL-8 in MPE.