通过甲基胆基衍生物的PTP1B的Allosteric抑制
Chenxia Gao1, Wenpeng Hu1, Feng Xu2
1State Key Laboratory of Microbial Technology, Shandong University, Qingdao, 266237, Shandong, PR China.
European journal of medicinal chemistry
|November 19, 2024
概括
研究人员开发了新型甲醇 - 酸盐衍生物作为蛋白质氨酸酸酶1B (PTP1B) 的全抑制剂,以对抗2型糖尿病. 化合物LXQ-87有效降低了糖尿病小鼠的血糖,并改善了胰岛素敏感性.
科学领域:
- 生物化学 生物化学
- 药用化学 医学化学
- 药理学 药理学是指药理学的学科.
背景情况:
- 蛋白氨酸酸酶1B (PTP1B) 是开发低血糖药物的关键目标.
- 针对PTP1B的BB位点的阿洛斯特抑制剂可以限制其WPD循环,抑制脱化.
- 开发有效的PTP1B抑制剂对于管理糖尿病至关重要.
研究的目的:
- 设计和合成新型甲醇 - 化衍生物作为PTP1B的全抑制剂.
- 评估这些化合物对2型糖尿病 (T2DM) 的抑制活性和治疗潜力.
主要方法:
- 设计和合成了60种甲基胆衍生物.
- 进行了体外抑制试验,以确定针对PTP1B的IC50值.
- 在体内使用BKS db/db小鼠进行了体内研究,以评估化合物的疗效.
主要成果:
- 化合物LXQ-87 (C8) 显示出强大的非竞争性抑制PTP1B,其IC50为1.061±0.202μM.
- 口服LXQ-87显著降低了糖尿病小鼠的禁食血糖水平.
- 在T2DM模型中,LXQ-87改善了葡萄糖耐受性,改善了脂质失调症,并减轻了胰岛素抵抗.
结论:
- 甲基胆衍生物,特别是LXQ-87,代表了一类有前途的全性PTP1B抑制剂.
- 通过增强胰岛素敏感性和葡萄糖吸收,LXQ-87显示出治疗2型糖尿病的治疗潜力.
- LXQ-87直接与细胞内PTP1B结合,为糖尿病药物开发提供了可行的策略.
相关概念视频
Allosteric Proteins-ATCase
5.7K
Binding sites linkages can regulate a protein's function. For example, enzyme activity is often regulated through a feedback mechanism where the end product of the biochemical process serves as an inhibitor.
Aspartate transcarbamoylase (ATCase) is a cytosolic enzyme that catalyzes the condensation of L-aspartate and carbamoyl phosphate to N-carbamoyl-L-aspartate. This reaction is the first step in pyrimidine biosynthesis. UTP and CTP, the end products of the pyrimidine synthesis...
Aspartate transcarbamoylase (ATCase) is a cytosolic enzyme that catalyzes the condensation of L-aspartate and carbamoyl phosphate to N-carbamoyl-L-aspartate. This reaction is the first step in pyrimidine biosynthesis. UTP and CTP, the end products of the pyrimidine synthesis...
5.7K
Allosteric Regulation
57.7K
Allosteric regulation of enzymes occurs when the binding of an effector molecule to a site that is different from the active site causes a change in the enzymatic activity. This alternate site is called an allosteric site, and an enzyme can contain more than one of these sites. Allosteric regulation can either be positive or negative, resulting in an increase or decrease in enzyme activity. Most enzymes that display allosteric regulation are metabolic enzymes involved in the degradation or...
57.7K
Indirect-Acting Cholinergic Agonists: Mechanism of Action
1.7K
Indirect-acting cholinergic agonists work by interacting with an enzyme called acetylcholinesterase (AChE) in the synaptic cleft. They can be reversible or irreversible inhibitors and have different effects on the enzyme.
Reversible inhibitors like edrophonium bind to a specific part of the enzyme called the anionic catalytic site. They form noncovalent bonds, which means they are not strongly attached to the enzyme. This creates a temporary and less stable enzyme–inhibitor complex,...
Reversible inhibitors like edrophonium bind to a specific part of the enzyme called the anionic catalytic site. They form noncovalent bonds, which means they are not strongly attached to the enzyme. This creates a temporary and less stable enzyme–inhibitor complex,...
1.7K
Indirect-Acting Cholinergic Agonists: Chemistry and Structure-Activity Relationship
522
Indirect-acting cholinergic agonists are agents that interact with the acetylcholinesterase enzyme in the synaptic cleft, preventing the breakdown of acetylcholine into choline and acetate. Consequently, the concentration of acetylcholine in the synaptic cleft increases. These agonists can be classified into reversible and irreversible inhibitors based on their duration of action.
Reversible inhibitors display short to medium durations of action. Short-acting agents include simple alcohols with...
Reversible inhibitors display short to medium durations of action. Short-acting agents include simple alcohols with...
522
Feedback Inhibition
53.7K
Biochemical reactions are occurring constantly in cells, converting starting substances to different products, usually with the help of enzymes that speed the reactions. Without enzymes, it would take far too long for most reactions to occur to be useful to the cell!
53.7K
The Electron Transport Chain
16.1K
The electron transport chain or oxidative phosphorylation is an exothermic process in which free energy released during electron transfer reactions is coupled to ATP synthesis. This process is a significant source of energy in aerobic cells, and therefore inhibitors of the electron transport chain can be detrimental to the cell's metabolic processes.
Inhibitors of the electron transport chain
Rotenone, a widely used pesticide, prevents electron transfer from Fe-S cluster to ubiquinone or Q...
Inhibitors of the electron transport chain
Rotenone, a widely used pesticide, prevents electron transfer from Fe-S cluster to ubiquinone or Q...
16.1K


