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USP28通过调节T淋巴细胞中的STAT5酸化和IL22产生来保护小鼠肠道炎症的发展
Gwenaëlle Le Menn1, Keela Pikkarainen1, Daniela Mennerich1
1Faculty of Biochemistry and Molecular Medicine, University of Oulu, Oulu, Finland.
Frontiers in immunology
|July 30, 2024
概括
乌比基特异蛋白酶28 (USP28) 通过调节T细胞功能来保护肠道炎症. 缺少USP28会损害T细胞的激活,增加对结肠炎的易感性,突出其在免疫恒温中的作用.
科学领域:
- 免疫学 免疫学 免疫学
- 分子生物学分子生物学
- 胃肠病学 胃肠病学
背景情况:
- 乌比基特异性蛋白酶 (USP) 是两基基酶酶,在癌症中具有新兴的作用.
- 在免疫细胞调节中USPs的功能,特别是T细胞,在很大程度上是未知的.
- 了解USP的作用对于开发新型治疗策略至关重要.
研究的目的:
- 研究USP28在T细胞激活,分化和功能中的作用.
- 为了确定USP28在肠道炎症中的参与,使用硫酸 (DSS) 诱导的大肠炎模型.
主要方法:
- 使用了USP28淘汰赛 (USP28-/-) 鼠标线.
- 进行了体外测试,以评估T细胞的激活和功能.
- 在野生型和USP28-/-小鼠中使用DSS模型诱导的急性肠炎.
主要成果:
- USP28缺乏导致CD8+ T细胞增加和T细胞激活受损.
- 在USP28淘汰赛小鼠中,IL17表达减少,T细胞调控功能增强 (iTreg).
- 缺乏USP28的激活T细胞表现出增加的STAT5酸化和升高的IL22水平.
- USP28-/-小鼠更容易受到DSS诱导的大肠炎的影响.
结论:
- USP28对于正常的T细胞功能至关重要,并防止急性肠道炎症.
- USP28调节STAT5信号和IL22的产生,影响免疫反应.
- USP28在维持肠道健康和免疫平衡中发挥着至关重要的作用.
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