与HIF-1α结合,通过调节线粒体相关的天体细胞铁致死,导致类似抑郁的行为
Fan Shi1,2, Yuran Wang1,2, Han Hao1,2
1School of Public Health, North China University of Science of Technology, Tangshan, Hebei, China.
Communications biology
|September 11, 2025
概括
环境暴露会触发大脑天体细胞中的铁,导致小鼠的抑郁症类行为. 这通过HIF-1α/VDAC1通路发生,突出显示了诱导神经效应的新机制.
科学领域:
- 神经科学是一个神经科学.
- 毒理学 毒理学 毒理学
- 细胞生物学 细胞生物学
背景情况:
- 环境 (Pb) 暴露与抑郁症有关.
- 在Pb诱导的神经功能障碍背后的精确机制仍然不完全理解.
研究的目的:
- 为了研究铁死在Pb诱导的类似抑郁的行为中的作用.
- 为了确定参与Pb诱导的天体细胞功能障碍的分子途径.
主要方法:
- 单细胞RNA测序以分析Pb暴露后大脑组织中的基因表达.
- 计算建模和实验验证以研究蛋白质相互作用.
- 评估铁亡,基因转录和星体细胞中的线粒体功能.
主要成果:
- 在小鼠中,Pb暴露诱导了类似于抑郁的行为,通过触发铁亡,特别是在星体细胞中.
- 鉴定出HIF-1α是星球细胞中铁亡的早期调节者,通过Pb2+结合稳定.
- HIF-1α/VDAC1轴是至关重要的,HIF-1α促进了VDAC1的转录,导致线粒体功能障碍.
结论:
- 由HIF-1α/VDAC1轴介导的星细胞铁,在Pb暴露后导致类似抑郁症的行为.
- 稳定HIF-1α,促进线粒体功能障碍和神经毒性.
- 这项研究揭示了Pb诱导的神经效应的新机制.
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