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通过WTAP/YTHDF1介导的m6 一种修改放大了人类MSCs的IFN-γ诱导的免疫抑制特性
Quan Chen1, Luoquan Ao2, Qing Zhao2
1State Key Laboratory of Trauma and Chemical Poisoning, Department of Stem Cell and Regenerative Medicine, Daping Hospital, Army Medical University, Chongqing 400042, China; Yunnan Key Laboratory of Stem Cell and Regenerative Medicine, Science and Technology Achievement Incubation Center, Kunming Medical University, Kunming 650500, China.
Journal of advanced research
|June 29, 2024
概括
干扰素- (IFN-γ) 通过N6-甲基氨酸 (m6A) 修饰,由WTAP和YTHDF1.1调节,许可介酶干细胞 (MSC) 进行免疫抑制. 这提高了炎症性疾病的治疗潜力.
科学领域:
- 免疫学 免疫学 免疫学
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
- 干细胞生物学 干细胞生物学
背景情况:
- 介酶干细胞 (MSCs) 具有免疫抑制能力,对于治疗免疫媒介炎症疾病至关重要.
- 干扰素- (IFN-γ) 是授权MSC用于免疫抑制的关键因素,但潜在的机制尚不清楚.
研究的目的:
- 调查N6甲基氨酸 (m6A) 修饰在IFN-γ许可的MSC免疫抑制功能的作用.
- 在这个过程中阐明m6A的调节机制和生物功能.
主要方法:
- 通过Epitranscriptomic微阵列和MeRIP-qPCR来确定WTAP的监管作用.
- 西部斑块,qRT-PCR和RNA稳定性测试用于分析WTAP/m6A/YTHDF1信号轴.
- 流细胞计和小鼠模型 (DSS诱导的大肠炎,CIA) 来评估功能能力和治疗疗效.
主要成果:
- IFN-γ增加了免疫抑制分子中的m6A水平;WTAP缺乏阻止了这种效应.
- IFN-γ激活了ERK信号,导致WTAP酸化,并通过m6通过A-YTHDF1.1提高了IDO1,PD-L1,ICAM1和VCAM1的mRNA稳定性.
- 过度表达WTAP/YTHDF1改善了MSC免疫抑制能力和治疗疗效在结肠炎和关节炎模型中.
结论:
- 由WTAP-YTHDF1介导的IDO1,PD-L1,ICAM1和VCAM1mRNA的修改调节了IFN-γ许可的MSC免疫抑制能力.
- 这一途径提供了一个潜在的策略,以提高MSCs的临床治疗疗效.
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