缺铁会通过内分泌网膜压力驱动的NF-κB通路激活,加剧哺乳小猪的肝炎
Jun Qi1, Yaxu Liang1,2, Dongming Yu1
1College of Animal Science and Technology, Nanjing Agricultural University, Nanjing, Jiangsu, 210095, China.
Journal of animal science and biotechnology
|February 12, 2026
概括
缺铁 (ID) 通过激活内质网膜应激 (ERS) 和NF-κB通路,导致小猪的肝炎. 这项研究揭示了与ID相关的肝损伤的新机制.
科学领域:
- 动物科学 动物科学
- 生物化学 生物化学
- 病理学 病理学 病理学
背景情况:
- 缺铁 (ID) 是婴儿和小猪的重大健康问题,导致牲畜的经济损失.
- 目前关于ID的研究重点是血液学问题,忽视了肝炎的机制.
- 这项研究使用小猪模型来调查ID相关的肝损伤.
研究的目的:
- 阐明在哺乳小猪中铁缺乏引起的肝炎的分子机制.
- 建立一个分子理论基础,以理解与ID相关的肝损伤.
主要方法:
- 使用了体内 (哺乳小猪模型) 和体外 (AML12肝细胞) 方法.
- 进行了基因病理学检查,传输电子显微镜和RNA-seq转录组分析.
- 研究了氧化应激,内分泌网膜应激 (ERS),未折叠蛋白质反应 (UPR) 和TLR4/NF-κB信号传递的作用.
主要成果:
- ID诱导肝氧化应激,并抑制小猪的Nrf2/HO-1通路.
- 组织病理学发现肝脏结构异常,而电子显微镜显示肝细胞损伤.
- ID激活了ERS/UPR和TLR4/NF-κB通路,增加了促炎细胞因子,减少了抗炎细胞因子.
- 在体外模型中证实了ERS/UPR和TLR4/NF-κB激活.
- 抑制ERS降低了NF-κB的激活和调节的细胞因子平衡.
结论:
- 缺铁会通过ESR介导的NF-κB通路的激活加剧肝炎.
- 这项研究为与缺铁相关的肝损伤提供了新的机制性见解.
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