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在全身性红血狼中通过免疫代谢激活B细胞

Shigeru Iwata^1,2, Maiko Hajime Sumikawa², Yoshiya Tanaka²

¹Department of Rheumatology and Clinical Immunology, Wakayama Medical University, Wakayama, Japan.

Frontiers in immunology

|May 31, 2023

概括

在全身性红斑狼 (SLE) 中,氨酸和谷氨酸溶解燃料B细胞激活. 这种免疫代谢重编程驱动了等离子体细胞的分化,加剧了SLE病变的发生.

科学领域:

免疫学免疫学免疫学
代谢途径代谢途径
自身免疫性疾病是一种自身免疫性疾病.

背景情况:

系统性红斑狼 (SLE) 是一种多器官自身免疫性疾病,其中B细胞起着至关重要的作用.
B细胞的激活和分化受到各种信号的影响,包括免疫代谢.
B细胞免疫代谢在SLE病变发生中的确切作用尚不清楚.

研究的目的:

研究SLE.B细胞中免疫代谢的调节机制.
阐明PI3K-Akt-mTOR信号通路在SLE B细胞激活和血细胞分化中的作用.
为了确定新的代谢途径,有助于SLE恶化.

主要方法:

来自健康捐赠者和SLE患者的激活B细胞的分析.
研究了 metionin 和 glutaminolysis 在 B 细胞代谢中的作用.
检查了mTORC1的激活,腺氨酸激酶,以及它们对EZH2和BACH2表达的下游影响.
评估了增强的线粒体功能对等离子体细胞分化的影响.

主要成果:

氨酸对于mTORC1在B细胞中的激活至关重要.
脊髓氨酸激酶和mTORC1通过表观基因组修饰抑制BACH2,协同诱导EZH2和血细胞.
谷氨酸溶解增强了线粒体功能,促进了SLE中的血细胞分化.

结论:

异常的B细胞免疫代谢,特别是涉及氨酸和谷氨酸溶解,有助于SLE的发病.
通过mTORC1调节EZH2和BACH2,是SLE B细胞分化的关键机制.
针对这些代谢途径可能为SLE提供新的治疗策略.

关键词:

在B细胞中,B细胞是一个小小的东西.葡萄糖氨基溶解是什么免疫代谢的免疫代谢.线粒体中的线粒体.

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