通过调节SLC7A11表达方式,AhR信号调节铁亡
Ziyue Kou1, Franklin Tran1, Tania Colon1
1Division of Environmental Medicine, Department of Medicine, Grossman School of Medicine, New York University, 341 East 25(th) Street, New York, NY 10010, USA.
Toxicology and applied pharmacology
|April 19, 2024
概括
基碳化合物受体 (AhR) 通过控制SLC7A11表达来调节细胞死亡途径铁亡. 激活AhR抑制铁亡,保护细胞免受氧化应激和脂质过氧化.
科学领域:
- 细胞生物学 细胞生物学
- 分子生物学分子生物学
- 生物化学 生物化学
背景情况:
- 基碳化合物受体 (AhR) 是一种转录因子,参与发育和免疫反应.
- 已知AhR在氧化应激中的作用,但其与铁亡的联系尚不清楚.
- 铁亡是一种受调节的细胞死亡途径,依赖于铁和脂质过氧化.
研究的目的:
- 调查AhR在铁亡中的作用.
- 阐明将AhR与铁亡联系起来的分子机制.
- 为了确定AhR配体是否可以调节铁灭.
主要方法:
- 药理上抑制和基因废除AhR.
- 埃拉斯诱导铁灭的测定.
- 测量SLC7A11表达和脂质过氧化.
- 对SLC7A11.11的翻译后修改的分析.
- 用印-3-酸盐 (I3P),一个AhR配体进行治疗.
主要成果:
- 激素AhR的无活化或缺失增强了埃拉斯诱导的铁亡.
- 这种增强与抑制SLC7A11表达和增加脂质过氧化有关.
- 在铁灭过程中观察到SLC7A11的翻译后修饰的证据.
- 通过一种依赖AhR的途径,AhR配体I3P保护细胞免受铁亡.
结论:
- 转录的AhR调节SLC7A11,这是铁灭的关键媒介.
- 激活AhR可以通过维持SLC7A11的表达和防止脂质过氧化来抑制铁.
- AhR是铁亡的关键抑制剂,在氧化应激下促进细胞存活.
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