神经元CRTC-1通过一种甲基荷胺信号来控制系统性线粒体代谢和寿命
Kristopher Burkewitz1, Ianessa Morantte1, Heather J M Weir1
1Department of Genetics and Complex Diseases, Harvard School of Public Health, 665 Huntington Avenue, Boston, MA 02115, USA.
Cell
|February 28, 2015
概括
神经CRTC-1对线粒体功能的重编程通过将能量感应与副作用分离来促进长寿. 外周代谢的这种中央调节取代了局部衰老机制,这表明准中央能量感知可能会增强健康的衰老.
科学领域:
- 细胞和分子生物学 细胞和分子生物学
- 衰老研究研究 衰老研究
- 神经科学是一个神经科学.
背景情况:
- 低能量的状态与物种中的老化延迟有关,但协调组织能量和寿命的机制尚不清楚.
- 由CRTC-1调节的AMP激活蛋白激酶 (AMPK) 和氨酸尿素通路对C. elegans的寿命有影响.
- 了解能量感知如何影响系统层面的衰老对于开发干预措施至关重要.
研究的目的:
- 阐明CRTC-1在调解AMPK和氨酸对寿命和衰老相关副作用的影响中的作用.
- 研究CRTC-1对代谢重编程和线粒体功能的组织特异调节.
- 为了确定CRTC-1对寿命的影响是细胞自主还是细胞非自主.
主要方法:
- 利用C. elegans作为一个模型生物体.
- 研究了CRTC-1在神经系统和外围组织中的功能.
- 分析了CRTC-1,AMPK,素素和NHR-49在调节线粒体新陈代谢和寿命方面的相互作用.
- 检查了catecholamine信号传递在调解系统效应中的作用.
主要成果:
- CRTC-1 重编程线粒体和代谢功能,将长寿的好处与有害的副作用分开.
- 神经元CRTC-1非自主调节外周代谢,对抗NHR-49.
- 神经系统中的CRTC-1信号抑制了AMPK的系统性线粒体新陈代谢和长寿效应.
- 远程调节机制取代了当地对衰老的贡献.
结论:
- 神经元CRTC-1通过协调全身代谢适应,在促进长寿方面发挥着关键作用.
- 针对中枢神经系统对能量状态的感知是促进健康衰老的潜在策略.
- 衰老过程的远程调节是系统寿命的关键因素.
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