甲基RNA m6在肉的LPS激活Kupffer细胞中的葡萄糖皮质体受体的A介导的转录后抑制
Yulan Zhao1, Yidan Jiang1, Yue Feng1
1MOE Joint International Research Laboratory of Animal Health and Food Safety, Nanjing Agricultural University, Nanjing, Jiangsu, PR China; Key Laboratory of Animal Physiology & Biochemistry, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, Jiangsu, PR China.
Poultry science
|November 21, 2024
概括
在免疫激活过程中,m6ARNA甲基化调节葡萄糖皮质体受体 (GR). 这项研究揭示了m6A修饰会损害GR mRNA的稳定性,降低蛋白质水平,为肝炎提供新的表观遗传治疗点.
科学领域:
- 分子生物学分子生物学
- 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.
背景情况:
- 葡萄糖皮质体受体 (GR) 调节新陈代谢和免疫力.
- RNA m6A甲基化影响代谢和炎症反应.
- 在免疫激活期间m6A在GR调节中的作用尚不清楚.
研究的目的:
- 调查m6ARNA甲基化在免疫激活期间GR调节中的参与.
- 阐明m6A影响Kupffer细胞 (KCs) 中GR表达的机制.
主要方法:
- 分析GR表达和RNA m6A甲基化在LPS挑战的 brojler肝和孤立的KCs中.
- 使用m6A抑制剂 (环氨酸) 和GR抗剂 (RU486).
- 使用YTHDF2siRNA,m6A位点预测,突变和光酶记者测试.
主要成果:
- 在KCs中,LPS挑战引起了未合的GR反应 (增加mRNA,减少蛋白质) 和升高的RNA m6A甲基化.
- m6A修改以YTHDF2-依赖的方式损害了GR mRNA的稳定性,导致GR蛋白水平降低.
- m6A抑制剂减轻了LPS诱导的GR蛋白抑制,而RU486对m6A甲基化没有影响.
结论:
- 在免疫激活过程中,m6ARNA修饰在下调GR表达中起着连续的作用.
- 在KC中,m6A介导的GR抑制为肝炎提供了潜在的治疗点.
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