IL-17A-producing CD30(+) Vδ1 T cells drive inflammation-induced cancer progression.

IL-17A-producing CD30(+) Vδ1 T cells drive inflammation-induced cancer progression.
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DOI:
10.1111/cas.13005
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发表时间:
2016-09
期刊:
影响因子:
5.7
通讯作者:
Hayakawa Y
Hayakawa Y
中科院分区:
医学2区
文献类型:
--
作者:
Kimura Y;Nagai N;Tsunekawa N;Sato-Matsushita M;Yoshimoto T;Cua DJ;Iwakura Y;Yagita H;Okada F;Tahara H;Saiki I;Irimura T;Hayakawa Y

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尽管已怀疑炎症与肿瘤转移增加有关,但启动癌症进展和转移所需的确切免疫反应类型仍不清楚。在本研究中,通过使用体内肿瘤进展模型,在该模型中,低致瘤性癌细胞在暴露于炎症后获得恶性转移表型,我们发现IL-17A是癌细胞恶性升级的关键信号。我们进一步证明,暴露在炎性微环境中的时间长短可能与获得更强的致瘤性有关,并且IL-17A对于放大这种局部炎症是至关重要的,正如在癌症和宿主基质细胞之间的串扰后观察到的IL-1β的产生和中性粒细胞的渗透一样。我们进一步确定,表达Vγδ1半不变TCR1的δT细胞通过以依赖于MyD88/IL-23的方式产生IL-17A来启动促癌炎症。最后,我们确定CD30是Vδ1T细胞炎症功能的关键分子,该途径的阻断针对这一癌症免疫升级过程。总而言之,这些结果揭示了产生IL-17A的CD30+Vδ1T细胞在触发炎症和协调导致癌症进展的微环境中的重要性。
Although it has been suspected that inflammation is associated with increased tumor metastasis, the exact type of immune response required to initiate cancer progression and metastasis remains unknown. In this study, by using an in vivo tumor progression model in which low tumorigenic cancer cells acquire malignant metastatic phenotype after exposure to inflammation, we found that IL‐17A is a critical cue for escalating cancer cell malignancy. We further demonstrated that the length of exposure to an inflammatory microenvironment could be associated with acquiring greater tumorigenicity and that IL‐17A was critical for amplifying such local inflammation, as observed in the production of IL‐1β and neutrophil infiltration following the cross‐talk between cancer and host stromal cells. We further determined that γδT cells expressing Vδ1 semi‐invariant TCR initiate cancer‐promoting inflammation by producing IL‐17A in an MyD88/IL‐23‐dependent manner. Finally, we identified CD30 as a key molecule in the inflammatory function of Vδ1T cells and the blockade of this pathway targeted this cancer immune‐escalation process. Collectively, these results reveal the importance of IL‐17A‐producing CD30+ Vδ1T cells in triggering inflammation and orchestrating a microenvironment leading to cancer progression.
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