赫索金酶通过PPP和细胞器动态调节蒙多介导的寿命
Raymond Laboy1,2, Marjana Ndoci1, Shamsh Tabrez Syed1
1Department of Molecular Genetics of Ageing, Max Planck Institute for Biology of Ageing, Cologne, Germany.
eLife
|August 11, 2025
概括
蒙多/马克斯样 (MML-1/MXL-2) 复合体通过感知营养物质来调节寿命. 六基因酶HXK-1和HXK-2控制MML-1的局部化,影响新陈代谢和寿命.
科学领域:
- 分子生物学分子生物学
- 遗传学 是一个遗传学.
- 代谢过程中的代谢.
背景情况:
- 蒙多/马克斯类 (MML-1/MXL-2) 综合体整合了长寿路径.
- MML-1/MXL-2将营养感应与碳水化合物和脂质代谢联系在一起.
- 在体内MML-1/MXL-2的上游调节者在很大程度上是未知的.
研究的目的:
- 为了确定MML-1/MXL-2转录复合物的上游调节者.
- 阐明代谢信号如何控制MML-1/MXL-2的功能和局部化.
- 了解器官沟通在代谢调节中的作用.
主要方法:
- 在*Caenorhabditis elegans*中,降低葡萄糖代谢酶.
- 通过显微镜评估MML-1核定位.
- 对转录标和生殖线长寿的分析.
- 通过线粒体β-氧化和酸通路 (PPP) 调节六金酶的研究.
主要成果:
- 抑制葡萄糖代谢酶降低了MML-1核定位.
- 六基因酶HXK-1和HXK-2被确定为MML-1的关键调节剂.
- 赫索基纳酶的淘汰导致MML-1重新分配到线粒体和脂质滴,降低目标和消除长寿.
- HXK-1通过线粒体β氧化调节MML-1; HXK-2通过PPP和脂质滴调节MML-1.
- 酸途径的抑制在饥饿时挽救了哺乳动物的MondoA功能.
结论:
- 代谢信号,特别是来自六基因酶的代谢信号,对MML-1/MXL-2的局部化和功能进行了关键调节.
- 器官沟通 (线粒体,脂质滴) 对于MML-1/MXL-2介导的代谢控制和长寿至关重要.
- 这些发现揭示了将新陈代谢,器官功能和长寿的转录调节联系在一起的保存机制.
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