Polarization of tumor-associated neutrophil phenotype by TGF-beta: "N1" versus "N2" TAN.

Polarization of tumor-associated neutrophil phenotype by TGF-beta: "N1" versus "N2" TAN.
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DOI:
10.1016/j.ccr.2009.06.017
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发表时间:
2009-09-08
期刊:
影响因子:
50.3
通讯作者:
Albelda SM
Albelda SM
中科院分区:
医学1区
文献类型:
--
作者:
Fridlender ZG;Sun J;Kim S;Kapoor V;Cheng G;Ling L;Worthen GS;Albelda SM

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TGF-β阻断通过多种机制显著减缓肿瘤生长,包括CD8+ t细胞和巨噬细胞的激活。在这里,我们发现TGF-β阻断也增加中性粒细胞吸引趋化因子,导致CD11b+/Ly6G+肿瘤相关中性粒细胞(TAN)的流入,这些中性粒细胞是超节段的,对肿瘤细胞更具细胞毒性,并表达更高水平的促炎细胞因子。因此,在TGF-β阻断后,这些中性粒细胞的消耗显著减弱了治疗的抗肿瘤作用,并降低了CD8+ t细胞的活化。相反,在对照肿瘤中,中性粒细胞耗竭会降低肿瘤生长,导致肿瘤内CD8+ t细胞更活化。综上所述,这些数据表明肿瘤微环境中的TGF-β诱导了具有促肿瘤表型的TAN群体。TGF-β阻断导致TAN的募集和激活,具有抗肿瘤表型。
TGF-β blockade significantly slows tumor growth through many mechanisms, including activation of CD8+ T-cells and macrophages. Here, we show that TGF-β blockade also increases neutrophil-attracting chemokines resulting in an influx of CD11b+/Ly6G+ tumor-associated neutrophils (TAN) that are hypersegmented, more cytotoxic to tumor cells, and express higher levels of pro-inflammatory cytokines. Accordingly, following TGF-β blockade, depletion of these neutrophils significantly blunts anti-tumor effects of treatment and reduces CD8+ T-cell activation. In contrast, in control tumors, neutrophil depletion decreases tumor growth and results in more activated CD8+ T-cells intra-tumorally. Together, these data suggest that TGF-β within the tumor microenvironment induces a population of TAN with a pro-tumor phenotype. TGF-β blockade results in the recruitment and activation of TAN with an anti-tumor phenotype.
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