母亲的西方风格的饮食促进免疫耐受性和肝脏状内皮细胞功能障碍在非人类灵长类动物的青少年后代肝脏
bioRxiv : the preprint server for biology
|January 16, 2026
概括
孕产妇怀孕期间的西方饮食计划 代谢功能障碍相关的脂肪性肝病 (MASLD) 的后代肝脏. 这种饮食创造了一个持久的,免疫耐受,亲纤维性肝脏环境,可以抵抗以后的饮食变化.
科学领域:
- 肝病学 肝病学是一种肝病学.
- 免疫学 免疫学 免疫学
- 发展规划 发展规划
背景情况:
- 孕期和哺乳期的孕产妇西式饮食 (mWSD) 消费与后代的代谢功能障碍相关的脂肪性肝病 (MASLD) 有关.
- 了解细胞机制,特别是免疫和内皮细胞的作用,对于解决这种发育编程至关重要.
研究的目的:
- 为了研究母亲西方饮食暴露对未成年非人类灵长类动物肝脏非基细胞的影响.
- 描述免疫和内皮细胞的细胞和分子变化,这些变化有助于MASLD的发展.
主要方法:
- 来自暴露于mWSD的年轻非人类灵长类动物的肝脏非辅酶细胞的单细胞RNA测序.
- 分析巨细胞,树突细胞,B细胞,T细胞和肝脏阴侧内皮细胞 (LSEC) 的表型和功能.
- 免疫细胞化学和RNA细胞相互作用的空间分析的范围.
主要成果:
- 暴露于mWSD诱导了独特的亲纤维性巨细胞表型,其修复功能受损.
- 库普弗和树突细胞数量减少,DCs中的炎症和抗原呈现途径受损,表明不成熟.
- 增加的B细胞减少炎症和受损分化,与T细胞一起显示细胞亡和减少炎症功能.
- 扩大了LSEC群体,激活了炎症/增殖,但免疫细胞通信减少,并增加了周围的LSEC-免疫细胞关联.
结论:
- 母亲的西方饮食在后代中建立了一个持久的免疫耐受性肝脏微环境.
- 这种环境的特点是纤维化通路,减少亲溶解的巨细胞和改变的免疫细胞简介,促进MASLD.
- 编程的肝脏微环境抵制产后的饮食纠正,突出显示了子宫内饮食暴露的长期后果.
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