在肺部的profibrotic预测毒理学.
Pooja Singh1, Rajesh Sinha1, Veena B Antony1
1Division of Pulmonary, Allergy and Critical Care Medicine, Department of Medicine, Heersink School of Medicine, University of Alabama at Birmingham, Birmingham, AL, United States.
Frontiers in pharmacology
|March 6, 2026
概括
小鼠肺器官 (MiLO) 准确地模拟了由毒素和药物引起的肺纤维化. 这种3D模型有助于研究肺病机制,选潜在的亲纤维菌化合物,减少动物试验.
科学领域:
- 肺部医学 肺部医学
- 毒理学 毒理学 毒理学
- 3D有机体技术 3D有机体技术
背景情况:
- 间歇性肺部疾病 (ILD),包括异常性肺纤维化,导致气体交换异常和死亡率.
- 预测性,生理相关的模型对于研究ILD和减少动物使用至关重要.
- 三维 (3D) 肺器官提供了一个复杂的体外平台,模仿肺组织结构和细胞性.
研究的目的:
- 评估小鼠肺器官 (MiLO) 作为评估环境毒素和制药剂对肺部毒性的模型.
- 为了比较MiLOs对已知的纤维化剂的反应与体内基准.
- 为验证MILO进行机械学研究和亲纤维化化合物的临床前查.
主要方法:
- 处理了老鼠的肺部,以产生3D肺部有机体 (MiLO).
- 米洛的特征是细胞多样性和细胞外矩阵 (ECM) 组成.
- 器官被暴露在 (Cd),尼托福兰 (NF) 或阿米奥达龙 (AD) 中以诱导纤维化.
- 纤维化标志物,基因表达,氧化应激和侵袭被评估在MiLOs中,并与体内数据进行比较.
主要成果:
- 米洛成功地重复了原生肺架构,ECM和纤维化相关的基因表达.
- 在MiLOs中Cd诱导的纤维化反映了体内发现,显示了增加的原沉积,氧化应激和益纤维蛋白基因激活.
- 药物治疗 (NF,AD) 诱导了MiLOs的标志性纤维化特征,包括高氧化应激和关键纤维化基因 (例如Tgfb1,Col1a1) 的上调.
结论:
- 小鼠肺部有机体有效地模拟了药物和毒素诱导的肺纤维化.
- 米洛为肺纤维化机制研究提供了一个强大的平台.
- 该模型有助于对具有潜在亲纤维菌作用的化合物的临床前查,减少对动物模型的依赖.
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