一个β-基酸突变通路产生抗肥胖代谢物
Maria Dolores Moya-Garzon1, Mengjie Wang2, Veronica L Li3
1Department of Pathology, Stanford University School of Medicine, Stanford, CA, USA; Sarafan ChEM-H, Stanford University, Stanford, CA, USA; Wu Tsai Human Performance Alliance, Stanford University, Stanford, CA, USA.
Cell
|November 13, 2024
概括
科学家们发现了一种新的代谢途径,用于beta-hydroxybutyrate (BHB),一个体,涉及氨基酸结合. 这种途径产生抗肥胖代谢物,称为BHB氨基酸,影响能量平衡和食行为.
科学领域:
- 代谢途径
- 生物化学
- 内分泌学
背景情况:
- β-基酸盐 (BHB) 是一种具有已知代谢作用的主要体.
- 现有的BHB代谢主要涉及与能量中间体的相互转换.
- 之前没有发现BHB的新型二次代谢途径.
研究的目的:
- 确定和描述BHB以前未被描述的代谢途径.
- 研究CNDP2在BHB代谢中的作用.
- 探索BHB氨基酸新代谢物的生成和功能.
主要方法:
- 在小鼠中对CNDP2进行基因切除.
- 组织氨基酸BHB-化活性分析.
- 评估BHB氨基酸含量及其对养行为的影响.
- 外源 Ester 补充剂和食饮食的使用.
主要成果:
- 通过BHB和氨基酸的CNDP2-依赖结合,发现了一种新的BHB二次代谢途径.
- 这种途径产生抗肥胖BHB氨基酸代谢物.
- 在CNDP2淘汰的小鼠中,BHB-ylation降低,食物摄入量增加.
- BHB-Phe是一种丰富的BHB-氨基酸,激活神经元并抑制食.
- 这种途径和代谢物在人体中保持不变.
结论:
- 酶性氨基酸BHB-化定义了一个新的突变通路.
- BHB氨基酸是影响能量平衡的生物活性代谢物.
- 在这种新发现的代谢途径中,CNDP2起着至关重要的作用.
相关概念视频
Loss of Carboxy Group as CO2: Decarboxylation of β-Ketoacids
3.1K
Carboxylic acids, upon heating, undergo a decarboxylation reaction by releasing carbon dioxide gas. Monocarboxylic acids do not undergo decarboxylation easily. However, a silver salt of carboxylic acid reacts with bromine or iodine under high temperature to release carbon dioxide gas and forms halide with one less carbon. This reaction is called the Hunsdiecker reaction.
3.1K
Overview of Fatty Acid Metabolism
30.2K
Lipids also are sources of energy that power cellular processes. Like carbohydrates, lipids are composed of carbon, hydrogen, and oxygen, but these atoms are arranged differently. Most lipids are nonpolar and hydrophobic. Major types include fats and oils, waxes, phospholipids, and steroids.
Fatty acids are catabolized in a process called beta-oxidation, which takes place in the matrix of the mitochondria and converts their fatty acid chains into two-carbon units of acetyl groups. The acetyl...
Fatty acids are catabolized in a process called beta-oxidation, which takes place in the matrix of the mitochondria and converts their fatty acid chains into two-carbon units of acetyl groups. The acetyl...
30.2K
Respiration Pathways
1
Cellular respiration is a fundamental metabolic process that enables organisms to generate energy from organic molecules. One of its central pathways is the tricarboxylic acid (TCA) cycle, also known as the Krebs cycle, which plays a crucial role in energy production and biosynthetic processes.Conversion of Pyruvate to Acetyl-CoAThe pyruvate generated from glycolysis undergoes oxidative decarboxylation by the pyruvate dehydrogenase complex, producing acetyl-CoA, one molecule of NADH, and one...
1
Reactions of Aldehydes and Ketones: Baeyer–Villiger Oxidation
4.0K
Baeyer–Villiger oxidation converts aldehydes to carboxylic acids and ketones to esters. The reaction uses peroxy acids or peracids and is often catalyzed by acid. The reaction is named after its pioneers, Adolf von Baeyer and Victor Villiger. The reaction is achieved by a wide range of peracids such as m-chloroperoxybenzoic acid (mCPBA), perbenzoic acid (C6H5COOOH), peracetic acid (CH3COOOH), hydrogen peroxide (H2O2), and tert-butyl hydroperoxide (t-BuOOH).
The carbonyl center is...
The carbonyl center is...
4.0K
Hydroboration-Oxidation of Alkenes
7.9K
In addition to the oxymercuration–demercuration method, which converts the alkenes to alcohols with Markovnikov orientation, a complementary hydroboration-oxidation method yields the anti-Markovnikov product. The hydroboration reaction, discovered in 1959 by H.C. Brown, involves the addition of a B–H bond of borane to an alkene giving an organoborane intermediate. The oxidation of this intermediate with basic hydrogen peroxide forms an alcohol.
7.9K
Alkylation of β-Ketoester Enolates: Acetoacetic Ester Synthesis
3.3K
Acetoacetic ester synthesis is a method to obtain ketones from alkyl halides and β-keto esters. The reaction occurs in the presence of an alkoxide base that abstracts the acidic proton of the β-keto esters. The step results in an enolate ion which is doubly stabilized. The enolate then reacts with an alkyl halide via the SN2 process to produce an alkylated ester intermediate with a new C–C bond. The hydrolysis of the intermediate, followed by acidification, results in an...
3.3K


