Glutaredoxin 1 controls monocyte reprogramming during nutrient stress and protects mice against obesity and atherosclerosis in a sex-specific manner.

Glutaredoxin 1 controls monocyte reprogramming during nutrient stress and protects mice against obesity and atherosclerosis in a sex-specific manner.
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谷胱甘肽1控制营养应激过程中的单核细胞重编程,并以性别特异性的方式保护小鼠免受肥胖和动脉粥样硬化的侵害。

DOI:
10.1038/s41467-022-28433-2
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发表时间:
2022-02-10
影响因子:
16.6
通讯作者:
Asmis R
Asmis R
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Ahn YJ;Wang L;Tavakoli S;Nguyen HN;Short JD;Asmis R

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高热量饮食引起的营养应激会促进硫醇氧化应激和血液单核细胞的重新编程,从而产生失调的、致肥胖的、促动脉粥样硬化的单核细胞衍生的巨噬细胞。我们报告说,在食物喂养的生殖衰老雌性小鼠中,但在年龄匹配的雄性小鼠中,硫醇转移酶谷氧还蛋白 1 (Grx1) 的缺乏会促进巨噬细胞表型失调以及体重快速增加和动脉粥样硬化形成。 Grx1缺陷会抑制雄性巨噬细胞和雌性巨噬细胞中活性氧和活性氮生成物的不同表达模式,使雌性巨噬细胞而非雄性巨噬细胞增加过氧硝酸盐的产生。造血Grx1缺陷在高热量饮食喂养的LDLR-/-小鼠中重现了这种性别二态性,而巨噬细胞限制的Grx1过度表达消除了高热量饮食喂养所揭示的性别差异,并保护雄性和雌性免受动脉粥样硬化形成。我们得出的结论是,单核细胞 Grx1 活性的丧失会破坏小鼠的免疫代谢平衡,并抑制巨噬细胞中的性二态性氧化应激反应。这种机制可能导致人类心血管疾病和肥胖症的性别差异。高热量饮食会促进硫醇氧化应激和血液单核细胞的重新编程,从而产生致肥胖和致动脉粥样硬化的巨噬细胞。作者在此报告称,单核硫醇转移酶谷氧还蛋白 1 的缺失会导致巨噬细胞中性别特异性氧化应激反应的抑制,从而促进雌性小鼠的动脉粥样硬化形成和肥胖。
High-calorie diet-induced nutrient stress promotes thiol oxidative stress and the reprogramming of blood monocytes, giving rise to dysregulated, obesogenic, proatherogenic monocyte-derived macrophages. We report that in chow-fed, reproductively senescent female mice but not in age-matched male mice, deficiency in the thiol transferase glutaredoxin 1 (Grx1) promotes dysregulated macrophage phenotypes as well as rapid weight gain and atherogenesis. Grx1 deficiency derepresses distinct expression patterns of reactive oxygen species and reactive nitrogen species generators in male versus female macrophages, poising female but not male macrophages for increased peroxynitrate production. Hematopoietic Grx1 deficiency recapitulates this sexual dimorphism in high-calorie diet-fed LDLR-/- mice, whereas macrophage-restricted overexpression of Grx1 eliminates the sex differences unmasked by high-calorie diet-feeding and protects both males and females against atherogenesis. We conclude that loss of monocytic Grx1 activity disrupts the immunometabolic balance in mice and derepresses sexually dimorphic oxidative stress responses in macrophages. This mechanism may contribute to the sex differences reported in cardiovascular disease and obesity in humans. High-calorie diet promotes thiol oxidative stress and the reprogramming of blood monocytes, giving rise to obesogenic and proatherogenic macrophages. Here the authors report that loss of monocytic thiol transferase glutaredoxin 1 results in the derepression of sex-specific oxidative stress responses in macrophages, promoting atherogenesis and obesity in female mice.
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DOI: 10.1038/nri3071
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