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首页> 外文期刊>Cell metabolism >Glutathione Restricts Serine Metabolism to Preserve Regulatory T Cell Function
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Glutathione Restricts Serine Metabolism to Preserve Regulatory T Cell Function

机译:谷胱甘肽限制丝氨酸代谢以保持调节性T细胞功能

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摘要

Regulatory T cells (Tregs) maintain immune homeostasis and prevent autoimmunity. Serine stimulates glutathione (GSH) synthesis and feeds into the one-carbon metabolic network (1CMet) essential for effector T cell (Teff) responses. However, serine's functions, linkage to GSH, and role in stress responses in Tregs are unknown. Here, we show, using mice with Treg-specific ablation of the catalytic subunit of glutamate cysteine ligase (Gclc), that GSH loss in Tregs alters serine import and synthesis and that the integrity of this feedback loop is critical for Treg suppressive capacity. Although Gclc ablation does not impair Treg differentiation, mutant mice exhibit severe autoimmunity and enhanced anti-tumor responses. Gclc-deficient Tregs show increased serine metabolism, mTOR activation, and proliferation but downregulated FoxP3. Limitation of cellular serine in vitro and in vivo restores FoxP3 expression and suppressive capacity of Gclc-deficient Tregs. Our work reveals an unexpected role for GSH in restricting serine availability to preserve Treg functionality.
机译:调节性T细胞(Treg)维持免疫稳态并预防自身免疫。丝氨酸刺激谷胱甘肽(GSH)合成,并进入效应T细胞(Teff)反应所必需的单碳代谢网络(1CMet)。然而,丝氨酸的功能、与GSH的联系以及在Treg应激反应中的作用尚不清楚。在这里,我们使用Treg特异性切除谷氨酸半胱氨酸连接酶(Gclc)催化亚单位的小鼠证明,Treg中GSH的丢失改变丝氨酸的输入和合成,并且该反馈回路的完整性对Treg抑制能力至关重要。尽管Gclc消融不会损害Treg分化,但突变小鼠表现出严重的自身免疫性和增强的抗肿瘤反应。Gclc缺陷的Tregs显示丝氨酸代谢、mTOR激活和增殖增加,但FoxP3下调。体外和体内限制细胞丝氨酸可恢复FoxP3表达和Gclc缺陷型Treg的抑制能力。我们的研究揭示了GSH在限制丝氨酸的可用性以保护Treg功能方面的一个意想不到的作用。

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  • 来源
    《Cell metabolism》 |2020年第5期|共24页
  • 作者单位

    Luxembourg Inst Hlth Dept Infect &

    Immun Expt &

    Mol Immunol 29 Rue Henri Koch Esch Sur Alzette;

    Luxembourg Inst Hlth Dept Infect &

    Immun Expt &

    Mol Immunol 29 Rue Henri Koch Esch Sur Alzette;

    Luxembourg Inst Hlth Dept Infect &

    Immun Expt &

    Mol Immunol 29 Rue Henri Koch Esch Sur Alzette;

    Luxembourg Inst Hlth Dept Infect &

    Immun Expt &

    Mol Immunol 29 Rue Henri Koch Esch Sur Alzette;

    Luxembourg Inst Hlth Dept Infect &

    Immun Expt &

    Mol Immunol 29 Rue Henri Koch Esch Sur Alzette;

    Luxembourg Inst Hlth Dept Infect &

    Immun Expt &

    Mol Immunol 29 Rue Henri Koch Esch Sur Alzette;

    Tech Univ Carolo Wilhelmina Braunschweig Braunschweig Integrated Ctr Syst Biol BRICS Rebenring 56;

    Luxembourg Inst Hlth Dept Infect &

    Immun Allergy &

    Clin Immunol 29 Rue Henri Koch L-4354 Esch;

    Luxembourg Inst Hlth Dept Infect &

    Immun Expt &

    Mol Immunol 29 Rue Henri Koch Esch Sur Alzette;

    Luxembourg Inst Hlth Dept Infect &

    Immun Immune Endocrine Epigenet Res Grp 29 Rue Henri Koch L;

    Luxembourg Inst Hlth Dept Infect &

    Immun Expt &

    Mol Immunol 29 Rue Henri Koch Esch Sur Alzette;

    Univ Hlth Network Ontario Canc Inst Campbell Family Canc Res Inst Toronto ON Canada;

    Luxembourg Inst Hlth Dept Infect &

    Immun Expt &

    Mol Immunol 29 Rue Henri Koch Esch Sur Alzette;

    Tech Univ Carolo Wilhelmina Braunschweig Braunschweig Integrated Ctr Syst Biol BRICS Rebenring 56;

    Univ Marburg Inst Med Microbiol &

    Hosp Hyg Marburg Germany;

    Luxembourg Inst Hlth Dept Infect &

    Immun Expt &

    Mol Immunol 29 Rue Henri Koch Esch Sur Alzette;

    Univ Luxembourg Luxembourg Ctr Syst Biomed 7 Ave Hauts Fourneaux Esch Sur Alzette Luxembourg;

    Univ Luxembourg Luxembourg Ctr Syst Biomed 7 Ave Hauts Fourneaux Esch Sur Alzette Luxembourg;

    Luxembourg Inst Hlth Dept Infect &

    Immun Allergy &

    Clin Immunol 29 Rue Henri Koch L-4354 Esch;

    Univ Luxembourg Luxembourg Ctr Syst Biomed 7 Ave Hauts Fourneaux Esch Sur Alzette Luxembourg;

    Yale Sch Publ Hlth Dept Environm Hlth Sci New Haven CT USA;

    Univ Rochester Med Ctr Dept Biomed Genet 601 Elmwood Ave Rochester NY 14642 USA;

    Univ Toronto Fac Med Dept Med Biophys Toronto ON Canada;

    Univ Hlth Network Ontario Canc Inst Campbell Family Canc Res Inst Toronto ON Canada;

    Canc Metab Grp Dept Oncol 84 Val Fleuri Luxembourg Luxembourg;

    Tech Univ Carolo Wilhelmina Braunschweig Braunschweig Integrated Ctr Syst Biol BRICS Rebenring 56;

    Luxembourg Inst Hlth Dept Infect &

    Immun Expt &

    Mol Immunol 29 Rue Henri Koch Esch Sur Alzette;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 内分泌腺疾病及代谢病;
  • 关键词

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