针对拉帕素复合体2的机械标减弱了系统性红血狼的免疫病理
Minji Ai1, Xian Zhou1, Michele Carrer2
1Division of Rheumatology, Department of Medicine, Mayo Clinic Rochester, MN, USA.
Rheumatology (Oxford, England)
|December 10, 2024
概括
针对拉巴胺复合体2 (mTORC2) 的机械标显示出治疗系统性红斑狼 (SLE) 的前景. 在小鼠模型和人体细胞中抑制mTORC2减少了狼类症状和自身抗体的产生,这表明了新的治疗途径.
科学领域:
- 免疫学 免疫学 免疫学
- 分子生物学分子生物学
- 类风湿病学 类风湿病学
背景情况:
- 系统性红斑狼 (SLE) 是一种复杂的自身免疫性疾病.
- 在SLE病变发生过程中,拉巴胺复合物2 (mTORC2) 的机械标的作用尚未完全被理解.
- I型干扰素 (IFN) 信号与SLE有关,可能调节mTORC2活动.
研究的目的:
- 研究mTORC2在SLE发育中的作用.
- 探索在自身免疫中通过I型IFN信号的mTORC2的体内调节.
- 在临床前和临床模型中评估mTORC2向治疗以改善狼类症状.
主要方法:
- 在T细胞特异性Rictor缺陷小鼠中使用imiquimod (IMQ) 诱导狼类疾病.
- 在1型IFN受体 (IFNAR) 缺陷的Lpr小鼠中分析mTORC2信号和免疫表型.
- 治疗MRL/lpr狼小鼠和人类SLE外周血液单核细胞 (PBMCs) 用抗Rictor反感寡核酸 (Rictor-ASO).
主要成果:
- 在接受IMQ治疗的小鼠中,T细胞特异性Rictor缺陷减少了B细胞种群,血细胞,生殖中心B细胞和自身抗体的产生.
- 在Lpr小鼠中IFNAR1缺乏导致CD4+T细胞mTORC2活性降低,改善葡萄糖代谢,部分恢复T细胞贩运,并减少全身炎症.
- 在MRL/lpr小鼠中,Rictor-ASO治疗改善了功能,病理和免疫病理,并在人类SLE PBMC中显著降低了免疫球蛋白和自身抗体的产生.
结论:
- mTORC2在狼类疾病的发展中起着重要作用.
- 第一种类型的IFN信号影响T细胞在自身免疫过程中的mTORC2活性.
- 用Rictor-ASO针对mTORC2是一个有前途的SLE治疗策略.
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