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相关实验视频

Updated: Jul 28, 2025

Collecting Variable-concentration Isothermal Titration Calorimetry Datasets in Order to Determine Binding Mechanisms
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第十一章 没有了

Lan-Min Wang1, Ke Jia1, Zhen-Fang Li1

  • 1The Sperm Laboratory, College of Life Sciences, Zhejiang University, Hangzhou, 310058, China.

Environmental pollution (Barking, Essex : 1987)
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概括
此摘要是机器生成的。

二氧化纳米颗粒 (TiO2-NPs) 损害了类的雄性生殖健康 Eriocheir sinensis. 暴露会破坏血淋巴-丸屏障和精子生成,与氧化应激和mTOR信号通路有关.

关键词:
粘附接口的结合方式这里是Eriocheir sinensis的原点.精子发生是精子生成.TiO(2) 的纳米粒子.在mTOROR中使用mTOR.

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科学领域:

  • 环境毒理学环境毒理学
  • 生殖毒理学 生殖毒理学
  • 纳米材料的安全性

背景情况:

  • 已知二氧化纳米颗粒 (TiO2-NPs) 会导致男性生殖毒性.
  • 有限的研究存在于TiO2-NP在水生甲类动物中的毒性.
  • 淡水甲动物Eriocheir sinensis是研究环境污染物影响的相关模型.

研究的目的:

  • 为了研究TiO2-NPs在Eriocheir sinensis中的雄性生殖毒性.
  • 为了阐明TiO2-NP诱导的生殖损伤的潜在机制.
  • 探索氧化应激和mTOR信号在TiO2-NP毒性的作用.

主要方法:

  • 对E. sinensis暴露于3nm和25nm的TiO2-NP.
  • 评估细胞亡,血淋巴-试管壁 (HTB) 完整性和精卵管结构.
  • 评估附着结 (AJ) 蛋白表达和突组织.
  • 测量活性氧物种 (ROS) 生产和mTORC1/mTORC2信号通路活性.
  • 与ROS清除剂N-乙半氨酸 (NAC) 和mTORC1抑制剂Rapamycin的干预.

主要成果:

  • 暴露于TiO2-NP诱导了亡,并损坏了HTB和精卵管.
  • 较小的3纳米TiO2-NP导致比25纳米TiO2-NP更严重的精子生成功能障碍.
  • TiO2-NPs影响了AJ表达,诱导了蛋白失调,并导致ROS生成.
  • 观察到mTORC1-mTORC2信号失衡 (mTORC1/Akt增加,mTORC2没有变化).
  • 纳克治疗挽救了mTORC1-mTORC2不平衡和AJ变化;拉帕素部分恢复了AJ和蛋白.

结论:

  • 暴露于TiO2-NP对E. sinensis.的男性生殖健康构成重大风险.
  • 氧化应激和随后的mTORC1-mTORC2通路失调是TiO2-NP诱导的生殖毒性的关键机制.
  • 附着结节和血淋巴-丸屏障的破坏有助于精子生成功能障碍.