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在斑马鱼中,ILA通过脂质免疫交叉和肠道微生物群调节减轻HFD诱导的代谢功能
Fengli Zhang1, Jiajun Tian1, Jitong Li1
1Department of Aquaculture, Zhejiang Ocean University, Zhoushan, 316000, China.
Fish & shellfish immunology
|August 27, 2025
概括
通过改善脂质代谢和肠道健康,补充英多尔-3-乳酸 (ILA) 可以对抗斑马鱼的高脂肪饮食引起的代谢障碍. ILA增强了肠道屏障功能,减少了炎症,为水产养殖提供了潜在的策略.
科学领域:
- 水产养殖
- 鱼类生理学
- 肠道微生物组研究
背景情况:
- 高脂肪饮食 (HFD) 诱导鱼类的代谢综合征,影响水产养殖.
- 益生菌Akkermansia muciniphila增加了三甲酸 (ILA),这是一个三甲酸代谢物.
- 需要对 ILA 抵消 HFD 引起的代谢功能障碍进行研究.
研究的目的:
- 为了研究ILA对斑马鱼的HFD诱导的代谢障碍的影响.
- 探讨国际劳工协会行动的基本机制.
- 评估ILA对脂质代谢,肠道完整性,炎症和肠道微生物群的影响.
主要方法:
- 斑马鱼被用HFD养,或没有ILA补充 (100μg/g).
- 评估的生长参数,料转换率和生存率.
- 评估肝硬化,脂原/脂解基因表达,肠壁完整性 (qRT-PCR检测紧接蛋白),血清脂聚糖 (LPS) 和炎症性细胞因子.
- 分析了肠道微生物组成并进行了转录组测序.
- 通过AhR2受体激活和下游基因表达来研究ILA的机制.
主要成果:
- ILA补充剂显著降低了HFD引起的体重增加和改善了料转换率.
- 通过降低脂质基因的调节和提高脂质基因的调节,ILA减轻了肝硬化.
- 肠道屏障的完整性得到保留,紧密结的超结构恢复,屏障蛋白质上调.
- ILA降低了血清LPS和肝脏LBP,抑制了促炎细胞因子,并增加了抗炎IL-10.
- 肠道微生物群重组,病原细菌减少,类繁多变化.
- 转录组分析显示ILA在脂质代谢和免疫相关途径中的丰富,可能由AhR2受体激活介导.
结论:
- 在斑马鱼中,因高脂肪饮食引起的代谢功能障碍得到有效改善.
- ILA通过双重调节脂质稳定,肠道屏障功能和炎症而起作用.
- 在水产养殖中,ILA具有治疗代谢障碍的潜力.
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