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Updated: Sep 10, 2025

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通过促进NUDT1介导的GPX4的m7G甲基化修饰,埃斯库莱丁抑制了ICH后的铁

Jinbing Gong1, Zhanwei Zhang1, Libo Li1

  • 1Department of Neurosurgery, The First Affiliated Hospital of Hunan University of Chinese Medicine, Changsha, 410007, China.

Scientific reports
|August 22, 2025
PubMed
概括

通过促进NUDT1介导的7-甲基瓜诺辛 (m7G) 甲基化,增强GPX4稳定性,并减少神经缺陷,从Cortex Fraxini中获得的 Esculetin可抑制脑内出血 (ICH) 的铁化.

关键词:
埃斯库莱铁症其他:大脑内出血时间表:m7G甲基化改性

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科学领域:

  • 神经科学
  • 分子生物学
  • 药理学

背景情况:

  • 脑内出血 (ICH) 是一种严重的中风类型,死亡率和残疾率高.
  • 抑制受控细胞死亡的一种形式,是ICH的一种有希望的治疗策略.
  • 来自Cortex Fraxini的 Esculetin具有神经保护作用,而7 - 甲基瓜诺辛 (m7G) 甲基化对神经功能和铁死至关重要.

研究的目的:

  • 在试验室ICH模型中研究 esculetin 对铁的作用.
  • 阐明m7G修饰在抗铁的保护机制中的作用.
  • 在体内ICH小鼠模型中验证这些发现.

主要方法:

  • 使用海明诱导的PC12细胞模型和ICH小鼠模型.
  • 测量了细胞活力,死亡和铁亡标志物 (Fe2+,谷,脂质ROS,MDA).
  • 使用定量实时PCR,甲基化RNA免疫沉 (MeRIP) 和RIP测试来探索分子机制.

主要成果:

  • 埃斯库莱丁治疗增加了细胞活力,并抑制了血红蛋白诱导的PC12细胞中的铁亡.
  • 埃斯库莱丁增加了NUDT1介导的m7G水平,从而提高了GPX4mRNA的稳定性.
  • 消除了NUDT1过度表达的抗ferroptosis作用.
  • 在体内, esculetin 降低了ICH小鼠的神经缺陷和铁.

结论:

  • 通过促进NUDT1介导的m7G甲基化和稳定GPX4来缓解ICH诱导的铁.
  • 这种机制突出了ICH治疗的新疗法.
  • 埃斯库莱是一种潜在的治疗药物,用于治疗脑内出血.