由氧化低密度脂蛋白诱导的训练免疫力依赖于谷氨酸溶解
Alice Scarpa1, Yerin Jung1, Arslan Hamid1
1Department of Immunology and Metabolism, Life and Medical Sciences (LIMES) Institute, University of Bonn, Bonn, Germany.
概括
谷氨酸代谢对于在动脉样硬化中训练免疫力至关重要. 抑制谷氨酸溶解可以阻止巨细胞中氧化LDL诱导的训练免疫,从而影响炎症反应.
科学领域:
- 免疫学 免疫学 免疫学
- 代谢性疾病 代谢性疾病
- 心血管研究研究心血管研究
背景情况:
- 动脉样硬化是一种慢性炎症性动脉疾病,有助于心血管疾病.
- 单细胞衍生的巨细胞在动脉生成中发挥着关键作用.
- 训练有素的免疫力,由代谢和表观遗传重编程驱动,增强单细胞的反应能力.
研究的目的:
- 研究谷氨酸溶解途径在氧化低密度脂蛋白 (oxLDL) 诱导的训练免疫中的作用.
- 确定抑制谷氨酸溶解是否会影响人类单细胞中oxLDL诱导的训练免疫力.
主要方法:
- 主要的人类单细胞暴露于oxLDL,并分化为巨细胞.
- 谷氨酸酶抑制剂CB-839被用于阻止谷氨酸克症.
- 测量了细胞因子的产生,氧气消耗率 (OCR) 和细胞外酸化率 (ECAR).
- 在独立的队列中分析了谷氨酸溶解基因多态性和代谢物相关性的遗传关联.
主要成果:
- 用CB-839抑制谷氨酸溶解可以防止oxLDL诱导的训练免疫.
- 这与细胞因子产生减少,OCR减少和ECAR降低有关.
- 基因分析揭示了谷氨酸溶解基因多态和训练免疫之间的关联.
- 增加的谷氨酸和克雷布斯循环代谢物与肥胖个体的炎症标志物相关.
结论:
- 谷氨酸溶解对于诱导oxLDL诱导的训练免疫力至关重要.
- 向谷氨酸溶解可能为动脉样硬化提供治疗策略.
- 单细胞的代谢重编程是炎症疾病发展的关键因素.
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