一个与能量平衡相关的二次β-基酸代谢途径
Maria Dolores Moya-Garzon1,2,3, Mengjie Wang4, Veronica L Li1,5,2,3
1Department of Pathology, Stanford University School of Medicine, Stanford, CA, USA.
bioRxiv : the preprint server for biology
|September 24, 2024
概括
科学家们发现了β-基酸 (BHB) 的新代谢途径,它通过CNDP2与氨基酸结合. 这一过程产生了BHB-氨基酸,它调节了食和体重,为酸代谢和能量平衡提供了新的见解.
科学领域:
- 生物化学 生物化学
- 代谢途径 代谢途径
- 内分泌学 在内分泌学.
背景情况:
- β-基酸盐 (BHB) 是一种主要体,参与能量代谢.
- 现有的BHB代谢途径侧重于与能量中间体的相互转换.
- 之前没有描述过BHB的新型二次代谢途径.
研究的目的:
- 确定和描述以前未被描述的β-基酸盐 (BHB) 的代谢途径.
- 研究CNDP2在BHB代谢和新代谢物形成中的作用.
- 确定这些新型代谢物对能量平衡和养行为的生理影响.
主要方法:
- 酶分析检测BHB与氨基酸的结合.
- 在小鼠模型 (CNDP2-KO小鼠) 中对CNDP2进行基因切除.
- 将BHB-Phe给肥胖小鼠,评估神经活动和体重.
- 在组织中分析BHB-氨基酸水平.
主要成果:
- 发现了BHB代谢的CNDP2-依赖性途径,涉及与氨基酸的酶结合,形成BHB-氨基酸.
- CNDP2淘汰赛小鼠显示组织BHB-ylation被废除,BHB-氨基酸水平降低.
- 在肥胖小鼠中,服用BHB-Phe抑制了食并降低了体重.
- 在症刺激下,CNDP2-KO小鼠的食物摄入量和体重增加.
- 在人类中,BHB-化和BHB-氨基酸代谢物被保存.
结论:
- BHB的代谢途径超越了初级能量代谢,包括二次代谢产物.
- CNDP2控制了一种新的BHB代谢途径,产生BHB-氨基酸.
- BHB-氨基酸,特别是BHB-Phe,在调节养行为和能量平衡方面发挥着重要作用.
- 这一发现为了解和潜在地针对代谢障碍开辟了新的途径.
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