长期的基因素乳化连接了先天免疫记忆中的代谢和表观遗传重新连接
Athanasios Ziogas1, Boris Novakovic2, Lorenzo Ventriglia3
1Department of Internal Medicine and Radboud Center for Infectious Diseases, Radboud University Medical Center, Nijmegen, the Netherlands; Department of Cell Biology, Faculty of Science, Radboud Institute for Molecular Life Sciences, Radboud University Nijmegen, Nijmegen, the Netherlands.
训练有素的免疫,是一种天生的免疫记忆,涉及诸如基因组乳化 (H3K18la) 的表观遗传变化. 这一与乳酸生产相关的过程增强了免疫反应,并在BCG疫苗接种后长期持续.
科学领域:
- 免疫学
- 表观遗传学
- 代谢过程
背景情况:
- 训练有素的免疫力赋予了先天的免疫记忆, 增强了对随后感染的反应.
- 这种现象与免疫细胞的表观遗传和代谢变化有关.
- 在人类中,Bacille Calmette- Guérin (BCG) 疫苗接种与乳酸释放的增加和细胞因子的增强有关.
研究的目的:
- 调查素乳化 (H3K18la) 在训练免疫中的作用.
- 探索乳酸生产,基因素乳化和训练免疫反应之间的关联.
- 确定H3K18la作为先天免疫记忆的表观遗传标记物的持久性.
主要方法:
- 从BCG疫苗接种个体的单细胞/巨细胞中分析基因素乳化.
- 评估H3K18la,活性染色体和基因转录之间的相关性.
- 药理上抑制乳酸盐的产生和基因素的乳化.
- 评估LDHA和EP300基因多态性的影响.
主要成果:
- 训练有素的单细胞/巨细胞表现出H3K18la,主要在偏远的调节区域.
- 基因素乳化与活性染色体和基因转录具有正相关性.
- 增加乳酸的产生通过组织蛋白乳化增强了促炎性细胞因子的产生.
- 抑制乳酸或乳化阻断了训练免疫力;基因多态度调节了它.
- 在BCG接种后90天内检测到H3K18la,这表明长期持续存在.
结论:
- 基因组乳化 (H3K18la) 是训练免疫的一个关键表观遗传机制.
- 乳酸生产对于诱导训练免疫反应至关重要.
- 在BCG疫苗接种后,H3K18la作为先天免疫记忆的持续表观遗传标记.
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