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饮食中的脂质含量通过C. elegans中的LRK-1和DRP-1表达来改变wah-1/AIFM1相关的表型

Mrityunjoy Mondal¹, Enzo Scifo¹, Rossella Erminia Ciliberti¹

¹German Center for Neurodegenerative Diseases (DZNE), Bonn, Germany.

Nature communications

|December 1, 2025

概括

饮食中的脂质会影响复合I缺陷的C. elegans中的线粒体健康和寿命. 高脂肪饮食有助于生存,而低脂肪饮食通过激活特定蛋白质来缩短寿命.

科学领域:

细胞生物学细胞生物学
线粒体功能线粒体功能
营养科学营养科学

背景情况:

线粒体调节细胞代谢,并适应营养的可用性.
饮食对线粒体疾病进展的影响尚未完全理解.
线粒体综合体I组装缺陷可能导致疾病表型.

研究的目的:

为了研究脂质衍生饮食如何影响C. elegans突变的线粒体功能和生存.
阐明了饮食引起的线粒体健康变化背后的分子机制.
为了确定线粒体疾病的潜在治疗点.

主要方法:

在C. elegans.中进行蛋白质和脂质组分析.
对特定基因进行基因操纵 (例如,wah-1/AIFM1,LRK-1,DRP-1).
寿命测定和线粒体网络形态学的评估.

主要成果:

脂质衍生饮食显著改变了wah-1/AIFM1突变体的代谢特征.
高脂饮食通过维护线粒体网络并促进脂质积累来延长寿命.
低脂饮食通过过度激活LRK-1和DRP-1来缩短生存时间,导致线粒体分裂和过度的自.

结论:

饮食中的脂质摄入量在调节线粒体功能和疾病表型方面发挥着至关重要的作用.
抑制LRK-1通过减少DRP-1表达和线粒体碎片化来挽救低脂条件下的生存缺陷.
营养,特别是脂质可用性,可能为遗传性线粒体疾病提供治疗策略.

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