Crosstalks between mTORC1 and mTORC2 variagate cytokine signaling to control NK maturation and effector function.

Crosstalks between mTORC1 and mTORC2 variagate cytokine signaling to control NK maturation and effector function.
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mTORC1 和 mTORC2 之间的串扰改变细胞因子信号传导以控制 NK 成熟和效应器功能。

DOI:
10.1038/s41467-018-07277-9
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发表时间:
2018-11-19
影响因子:
16.6
通讯作者:
Deng Y
Deng Y
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Wang F;Meng M;Mo B;Yang Y;Ji Y;Huang P;Lai W;Pan X;You T;Luo H;Guan X;Deng Y;Yuan S;Chu J;Namaka M;Hughes T;Ye L;Yu J;Li X;Deng Y

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代谢检查点激酶机制/哺乳动物雷帕霉素靶点(mTOR)调节自然杀伤(NK)细胞的发育和功能,但确切的潜在机制尚不清楚。在这里,我们发现,通过条件删除Raptor (mTORC1)或Rictor (mTORC2), mTORC1和mTORC2主要通过控制Tbx21和Eomes的表达,以合作和非冗余的方式促进NK细胞成熟。有趣的是,mTORC1和mTORC2以相反的方式调节细胞溶解功能,分别对抗肿瘤能力和代谢表现出促进和抑制作用。mTORC1通过维持cd122介导的IL-15信号传导来维持mTORC2的活性,而mTORC2通过抑制stat5介导的SLC7A5表达来抑制mTORC1调节的NK细胞效应功能。因此,mTORC1和mTORC2信号传导之间的这些正串扰和负串扰使NK细胞活化的强度和动力学发生变化,并有助于定义NK成熟和效应物功能调节的范式。代谢调节蛋白家族,mTOR,调节自然杀伤(NK)细胞的发育和功能,但其潜在的机制尚不清楚。在这里,作者表明Raptor/mTORC1和Rictor/mTORC2形成一个反馈串扰网络,使细胞因子和细胞信号多样化,并调节NK成熟和效应功能。
The metabolic checkpoint kinase mechanistic/mammalian target of rapamycin (mTOR) regulates natural killer (NK) cell development and function, but the exact underlying mechanisms remain unclear. Here, we show, via conditional deletion of Raptor (mTORC1) or Rictor (mTORC2), that mTORC1 and mTORC2 promote NK cell maturation in a cooperative and non-redundant manner, mainly by controlling the expression of Tbx21 and Eomes. Intriguingly, mTORC1 and mTORC2 regulate cytolytic function in an opposing way, exhibiting promoting and inhibitory effects on the anti-tumor ability and metabolism, respectively. mTORC1 sustains mTORC2 activity by maintaining CD122-mediated IL-15 signaling, whereas mTORC2 represses mTORC1-modulated NK cell effector functions by restraining STAT5-mediated SLC7A5 expression. These positive and negative crosstalks between mTORC1 and mTORC2 signaling thus variegate the magnitudes and kinetics of NK cell activation, and help define a paradigm for the modulation of NK maturation and effector functions. The metabolic regulator protein family, mTOR, regulate natural killer (NK) cell development and function, but the underlying mechanism is unclear. Here, the authors show that Raptor/mTORC1 and Rictor/mTORC2 form a feedback crosstalk network to variegate cytokine and cellular signaling and modulate NK maturation and effector functions.
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