埃尔戈氨酸通过通过CSE依赖的持续硫化增强cGPDH活性来改善老年动物的健康状况
Dunja Petrovic1, Luke Slade1, Yiorgos Paikopoulos1
1Leibniz Institute for Analytical Sciences, ISAS e.V., Dortmund, Germany.
Cell metabolism
|January 22, 2025
概括
欧戈氨酸 (ET) 通过延长寿命和改善虫和老鼠的移动性来促进健康的衰老. 这种饮食化合物通过硫化 (H2S) 信号增强肌肉功能和弹性,提供治疗潜力.
科学领域:
- 老年学和衰老研究研究.
- 营养生物化学 营养生物化学
- 代谢健康 代谢健康
背景情况:
- 欧戈氨酸 (ET) 是一种独特的食类氨酸/氨酸,因其抗氧化特性和在健康衰老中的潜在作用而闻名.
- 对ET对代谢弹性和与年龄相关的衰退的影响越来越感兴趣.
- 了解ET的分子机制对于其治疗应用至关重要.
研究的目的:
- 在老年动物模型中调查欧戈氨酸 (ET) 对健康和寿命的影响.
- 阐明ET有益作用的潜在分子机制,特别是关于H2S信号传递和NAD+代谢.
- 评估ET对抗与年龄相关的肌肉衰退和代谢功能障碍的潜力.
主要方法:
- 给年长的Caenorhabditis elegans和Sprague-Dawley大鼠使用欧戈氨酸 (ET).
- 评估寿命,移动性,抗压能力,肌肉质量,运动耐力和血管化.
- 机械研究涉及囊胺-酶 (CSE),硫化 (H2S) 生产,蛋白质再硫化和细胞质甘-3-酸盐脱酶 (cGPDH) 活性.
- 利用缺少CSE或cGPDH的遗传模型来确认途径的参与.
主要成果:
- 在老年C. elegans中,ET显著延长了寿命和增强了机动性,同时改善了抗压能力和减少了衰老生物标志物.
- 在老老鼠中,ET改善了运动耐力,肌肉质量和血管化,与肌肉NAD+水平升高相关.
- 在机械上,ET通过CSE刺激了H2S的产生,导致300多种蛋白质的化,包括cGPDH激活,这推动了NAD+的增加.
- 在CSE或cGPDH缺陷模型中,ET的有益影响被取消了,这证实了这种途径的必要性.
结论:
- 欧戈氨酸 (ET) 在老年动物中显示出显著的促进寿命和健康的促进作用.
- ET的机制涉及H2S信号和蛋白质透硫,最终提高了NAD+水平和改善了肌肉功能.
- 这些发现强调了ET的治疗潜力,可以缓解与年龄相关的肌肉缩和代谢障碍.
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