SMAD4 impedes the conversion of NK cells into ILC1-like cells by curtailing non-canonical TGF-β signaling.

SMAD4 impedes the conversion of NK cells into ILC1-like cells by curtailing non-canonical TGF-β signaling.
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DOI:
10.1038/ni.3809
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发表时间:
2017-09
期刊:
影响因子:
30.5
通讯作者:
Colonna M
Colonna M
中科院分区:
医学1区
文献类型:
--
作者:
Cortez VS;Ulland TK;Cervantes-Barragan L;Bando JK;Robinette ML;Wang Q;White AJ;Gilfillan S;Cella M;Colonna M

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区分1型先天淋巴细胞(ILC 1)与自然杀伤(NK)细胞的特征之一是指示TGF-β家族的细胞因子的“印记”的基因签名。我们检查了ILC 1和NK细胞缺乏SMAD 4的小鼠,SMAD 4是一种信号转导子,可促进TGF-β家族所有细胞因子共同的经典信号传导途径。虽然SMAD 4缺陷不影响ILC 1分化,但NK细胞意外地获得了ILC 1样基因特征,并且无法控制肿瘤转移或病毒感染。在机制上,SMAD 4抑制NK细胞中由细胞因子受体TGF-βR1介导的非经典TGF-β信号传导。来自受息肉病影响的SMAD 4缺陷患者的NK细胞也对TGF-β高度反应。这些结果将SMAD 4鉴定为限制NK细胞中的非典型TGF-β信号传导的先前未知的调节剂。
Among the features that distinguish type 1 innate lymphoid cells (ILC1s) from natural killer (NK) cells is a gene signature indicative of ‘imprinting’ by cytokines of the TGF-β family. We examined mice in which ILC1s and NK cells lacked SMAD4, a signal transducer that facilitates the canonical signaling pathway common to all cytokines of the TGF-β family. While SMAD4 deficiency did not affect ILC1 differentiation, NK cells unexpectedly acquired an ILC1-like gene signature and were unable to control tumor metastasis or viral infection. Mechanistically, SMAD4 restrained non-canonical TGF-β signaling mediated by the cytokine receptor TGF-βR1 in NK cells. NK cells from a SMAD4-deficient person affected by polyposis were also hyper-responsive to TGF-β. These results identify SMAD4 as a previously unknown regulator that restricts non-canonical TGF-β signaling in NK cells.
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