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老龄化减少了鱼的肠道干细胞活动,间歇性禁食逆转了肠道基因表达模式

Michael Kothmayer¹, Sylvia Laffer¹, Philipp Widmayer¹

¹Division of Cell and Developmental Biology, Center for Anatomy and Cell Biology, Medical University of Vienna, Vienna, Austria.

|September 23, 2025

概括

衰老会损害肠道组织平衡和干细胞活动. 成年时间歇性禁食可以在老年时保持肠道结构和功能,这表明对长寿的潜在益处.

科学领域:

老年学是一门学科.
胃肠病学胃肠病学
细胞生物学细胞生物学

背景情况:

衰老导致细胞和器官功能障碍,影响健康和寿命.
饮食限制在抵消衰老效应方面表现有前途,但其对特定器官的影响需要进一步调查.

研究的目的:

为了研究衰老和营养对非洲绿 killifish肠道在其整个生命周期的影响.
了解间歇性禁食如何影响肠道组织恒温和衰老期间的干细胞活动.

主要方法:

利用非洲绿色鱼作为老化研究的模型生物.
综合形态测量,组织学和转录学来分析肠道变化.
在生命的不同阶段检查肠道组织,包括新生儿,青少年,成年人和老年人.

主要成果:

观察到与年龄相关的肠道长度,体积和干细胞周期时间的下降.
转录组分析显示,随着年龄的增长,昼夜钟和干细胞利基标记物发生了显著变化.
成年时间歇性禁食维持了成年人的基因表达水平在老年,保持组织平衡.

结论:

衰老与肠道干细胞活性降低和组织平衡有关.
间歇性禁食可以抵消与年龄相关的肠道结构和功能的下降.
在鱼肠道中的发现可以转化为哺乳动物肠道生物学和衰老研究.

关键词:

老化的老化衰老的老化肠道干细胞是指肠道干细胞.杀鱼是一种杀鱼.营养营养营养营养青春复兴复兴复兴衰老是一种老化.胃胃胃胃胃胃胃

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