NFE2L3调节结肠中与炎症和氧化压力相关的基因
Linda Yaker1, James Saliba1, Liam P C Scott1
1Lady Davis Institute for Medical Research, Montreal, H3T 1E2, Canada; Department of Medicine, McGill University, Montreal, H4A 3J1, Canada.
转录因子NFE2L3在炎症性肠病 (IBD) 中起着关键作用. 在结肠炎期间,NFE2L3似乎会为肠道的炎症做准备,影响免疫反应和细胞应激通路.
科学领域:
- 胃肠病学 胃肠病学
- 免疫学 免疫学 免疫学
- 分子生物学分子生物学
背景情况:
- 炎症性肠病 (IBD) 的发病过程涉及复杂的分子机制.
- 像NFE2L3这样的转录因子在IBD中的确切作用尚未完全阐明.
研究的目的:
- 在大肠炎的小鼠模型中研究转录因子NFE2L3的功能.
- 为了确定参与炎症反应的NFE2L3的下游点.
主要方法:
- 使用德克斯硫酸盐 (DSS) 在小鼠中诱导大肠炎.
- 组织学分析和测量利波卡林-2 (LCN2) 来确认炎症.
- 对候选标的Nfe2l3mRNA和蛋白质水平进行定量分析 (Stat1,Hmox1,Slc7a11).
- 对 NFE2L3 具有约束力的合作伙伴的 ENCODE ChIP 数据进行交叉引用.
主要成果:
- 在DSS诱导的大肠炎期间,Nfe2l3缺乏减少了LCN2升高.
- 在野生类型小鼠中,DSS治疗增加了NFE2L3mRNA.
- 在野生类型的小鼠中,NFE2L3目标Stat1,Hmox1和Slc7a11在DSS治疗后显示蛋白质表达增加,但不是Nfe2l3-/-小鼠.
- 在Nfe2l3-/-小鼠中,pSTAT1和SLC7A11.1的基底水平升高.
结论:
- 在IBD期间,NFE2L3与炎症反应有关.
- NFE2L3影响免疫抑制,氧化应激和铁亡途径.
- 在IBD中,NFE2L3可能会为炎症培养微环境.
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