一种合成的甘氨基诱导调节性T细胞的甲基化变化,与过敏性小鼠的耐受性反应有关
Rafael Núñez1, María J Rodríguez1, Clara Lebrón-Martín1
1Laboratory of Allergy, Allergy Research Group, Instituto de Investigación Biomédica de Málaga-Plataforma BIONAND (IBIMA-BIONAND), Málaga, Spain.
Frontiers in immunology
|June 19, 2023
概括
用D1ManPrup3进行的语言下免疫疗法改变了小鼠调节性T细胞 (Tregs) 中的DNA甲基化. 不同剂量的这种免疫疗法会诱导明显的表观遗传变化,导致对Pru p3过敏原的耐受性或脱敏.
科学领域:
- 免疫学 免疫学 免疫学
- 过敏学 过敏学
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
背景情况:
- 脂质转移蛋白 (LTP) 和桃子过敏原Pru p3一样,是常见的食物过敏原.
- 使用合成甘氨基基 (D1ManPrup3) 的语言下免疫疗法 (SLIT) 显示出对治疗Pru p 3过敏的前景.
- 以前的研究表明,SLIT诱导耐受性并影响树突细胞和调节性T细胞 (Tregs),但Tregs中的表观遗传变化仍未被探索.
研究的目的:
- 为了研究脏调节性T细胞 (Tregs) 中的DNA甲基化变化,来自接受SLIT治疗Pru p3过敏的小鼠.
- 探索不同剂量D1ManPrup3.3诱导的耐受性和脱敏性的表观遗传基础.
主要方法:
- 整个基因组双硫酸序列被用来分析DNA甲基化模式.
- 脊髓Tregs被比较在小鼠群体之间:耐受 (2nM D1ManPrup3),无敏 (5nM D1ManPrup3),仅抗原和过敏.
主要成果:
- 在所有SLIT治疗和仅抗原组的基因促进剂中观察到显著的甲基化变化.
- 耐受性和不敏感的群体表现出相似数量的甲基化变化,共有445个基因.
- 关键的转录因子对Treg功能至关重要,包括Foxp3和Gata3,显示差异性促进体甲基化,Foxp3在耐受组中完全低甲基化,而Gata3在无敏组中.
结论:
- 不同剂量的D1ManPrup3 SLIT在小鼠中引起不同的免疫反应 (耐受性与脱敏性).
- 这些不同的反应与调节性T细胞 (Tregs) 的差异性DNA甲基化模式有关.
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