ETV5通过准HACE1/Nrf2轴来改善缺血性中风,以抑制微质M1两极化和神经元烧灭
Delong Meng1, Qian Su1, Kejuan Jia1
1Department of Neurology, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang, China.
Biochemical pharmacology
|June 25, 2025
概括
通过激活HACE1/Nrf2通路,ETS变异转录因子5 (ETV5) 减少缺血性中风中的脑损伤. 这种机制抑制了有害的微质M1极化,为中风提供了潜在的治疗点.
科学领域:
- 神经科学是一个神经科学.
- 分子生物学分子生物学
- 病理学 病理学 病理学
背景情况:
- 缺血性中风是导致死亡和残疾的主要原因.
- 在缺血性中风中ETS变异转录因子5 (ETV5) 的作用尚不清楚.
- 在缺血性中风条件下,ETV5表达减少.
研究的目的:
- 研究ETV5在缺血性中风中的保护作用.
- 阐明ETV5作用的潜在分子机制.
- 为了确定ETV5是否影响微质偏振和神经元灭.
主要方法:
- 已建立的中脑动脉封闭/再输血 (MCAO/R) 动物模型.
- 使用的氧气-葡萄糖剥夺/再氧化 (OGD/R) 微质细胞模型.
- 评估了心脏病发作大小,神经缺陷和分子标记,包括HACE1和Nrf2.
主要成果:
- 在MCAO/R模型中,ETV5的过度表达显著降低了心脏病发作量和神经学缺陷.
- ETV5抑制了微质的M1两极分化,并降低了神经元灭.
- ETV5上调 HECT 域和安基林重复含有 E3 无素蛋白联酶1 (HACE1) 和核因素红色素2相关因子2 (Nrf2) 的表达.
- ETV5通过转录激活HACE1,通过与KEAP1.1竞争来增强Nrf2稳定性和核转位.
结论:
- ETV5对缺血性中风脑损伤有保护作用.
- 该机制涉及ETV5诱导的HACE1/Nrf2通路的激活.
- 这种途径抑制了微质M1的两极分化,这表明了缺血性中风的新疗法策略.
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