Allosteric inhibition of PTP1B by bromocatechol-chalcone derivatives

IF 6 2区 医学 Q1 CHEMISTRY, MEDICINAL European Journal of Medicinal Chemistry Pub Date : 2024-11-13 DOI:10.1016/j.ejmech.2024.117053
Chenxia Gao, Wenpeng Hu, Feng Xu, Yuxi Lin, Jiashu Chen, Dayong Shi, Pan Xing, Jiqiang Zhu, Xiangqian Li
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Abstract

Development of allosteric inhibitors may be a viable strategy to discover hypoglycemic drugs targeting PTP1B. Allosteric inhibitors occupying the BB site that is a hydrophobic pocket restrict the WPD loop in an open conformation, preventing the physiological dephosphorylation reaction. Toward the BB site, sixty bromocatechol-chalcone derivatives were designed and synthesized as allosteric inhibitors of PTP1B against diabetes mellitus. The most potent compound LXQ-87 (C8) inhibited PTP1B noncompetitively with an IC50 value of 1.061±0.202 μM. Oral administration of LXQ-87 reduces the fasting blood glucose level and improves glucose tolerance and dyslipidemia in BKS db/db mice suffering from T2DM. LXQ-87 alleviates insulin resistance and promotes cellular glucose uptake by directly binding to intracellular PTP1B.

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溴邻苯二酚-查尔酮衍生物对 PTP1B 的异位抑制作用
开发异构抑制剂可能是发现针对 PTP1B 的降糖药物的可行策略。异构抑制剂占据的 BB 位点是一个疏水口袋,它限制了处于开放构象的 WPD 环,从而阻止了生理上的去磷酸化反应。针对 BB 位点,研究人员设计并合成了 60 种溴邻苯二酚-查尔酮衍生物,作为 PTP1B 的异构抑制剂,以防治糖尿病。最有效的化合物 LXQ-87(C8)对 PTP1B 具有非竞争性抑制作用,IC50 值为 1.061±0.202 μM。口服 LXQ-87 可降低 BKS db/db T2DM 小鼠的空腹血糖水平,改善糖耐量和血脂异常。LXQ-87 通过直接与细胞内的 PTP1B 结合,缓解了胰岛素抵抗,促进了细胞的葡萄糖摄取。
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来源期刊
CiteScore
11.70
自引率
9.00%
发文量
863
审稿时长
29 days
期刊介绍: The European Journal of Medicinal Chemistry is a global journal that publishes studies on all aspects of medicinal chemistry. It provides a medium for publication of original papers and also welcomes critical review papers. A typical paper would report on the organic synthesis, characterization and pharmacological evaluation of compounds. Other topics of interest are drug design, QSAR, molecular modeling, drug-receptor interactions, molecular aspects of drug metabolism, prodrug synthesis and drug targeting. The journal expects manuscripts to present the rational for a study, provide insight into the design of compounds or understanding of mechanism, or clarify the targets.
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