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缺口信号通路调节臭氧诱导的肺循环节律扰乱
Xinyu Zhang1,2, Xiaotong Jian2, Xinyi Miao2
1Henan Clinical Research Center of Childhood Diseases, Henan Children's Hospital, Zhengzhou Children's Hospital, Children's Hospital Affiliated to Zhengzhou University, Zhengzhou 450018, China.
Toxics
|September 27, 2025
概括
臭氧 (O3) 污染通过激活Notch信号来破坏肺部昼夜节律. 这项研究揭示了Notch3/4激活是O3诱导的肺昼夜干扰和损伤的关键机制.
科学领域:
- 肺部毒理学 肺部毒理学
- 分子生物学分子生物学
- 循环节律研究的研究.
背景情况:
- 众所周知,臭氧 (O3) 污染会扰乱肺部昼夜节律,但根本的分子机制尚未完全理解.
- 诺奇信号通路对肺部平衡至关重要,并且可能与身体的内部时钟系统相互作用.
研究的目的:
- 为了研究Notch信号通路在臭氧引起的肺昼夜节律扰乱中的作用.
- 阐明将臭氧暴露与肺部昼夜时钟失调联系在一起的分子机制.
主要方法:
- 小鼠暴露于臭氧 (1.0ppm,3小时),暴露后24小时分析肺部组织.
- 转录组测序和基因组丰富分析 (GSEA) 确定了受影响的途径.
- 免疫组织化学 (IHC),RT-qPCR和对公共数据集 (GSE58244) 的重新分析被用于验证基因表达和评估Notch3/4淘汰赛效应.
主要成果:
- 臭氧暴露激活了Notch信号,并破坏了肺的昼夜通路,这是核心时钟基因 (Bmal1,Per2/3) 和Notch3/4.4的改变表达所证明的.
- 在Notch的核心基因和昼夜通路之间发现了显著的相关性.
- 诺奇3/4淘汰赛以时间依赖的方式加剧了臭氧诱导的昼夜干扰.
结论:
- 臭氧暴露会通过激活Notch3/4信号来触发肺部昼夜干扰.
- 这项研究为空气污染物如臭氧如何通过影响昼夜节律而导致肺损伤提供了新的机制性见解.
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