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Discovery of a potential positive allosteric modulator of glucagon-like peptide 1 receptor through virtual screening and experimental study.
Journal of Computer-Aided Molecular Design ( IF 3.0 ) Pub Date : 2019-11-22 , DOI: 10.1007/s10822-019-00254-4
Tejashree Redij 1 , Jian Ma 2 , Zhiyu Li 3 , Xianxin Hua 2 , Zhijun Li 1, 4
Affiliation  

The Glucagon-like peptide 1 receptor (GLP-1R) is a well-established target for the treatment of type 2 diabetes and GLP-1R agonist-based therapies represent an effective approach which results in several GLP-1 analog drugs. However, the development of nonpeptidic agonist drugs targeting GLP-1R remains unsuccessful. A promising strategy aims to develop orally bioavailable, small-molecule positive allosteric modulators of GLP1-1R. Taking advantage of the recently reported cryo-EM structure of GLP-1R at its active state, we have performed structure-based screening studies which include potential allosteric binding site prediction and in silico screening of drug-like compounds, and conducted in vitro testing and site-specific mutagenesis studies. One compound with low molecular weight was confirmed as a positive allosteric modulator of GLP-1R as it enhances GLP-1's affinity and efficacy to human GLP-1R in a dose dependent manner. This compound also stimulates insulin secretion synergistically with GLP-1. With the molecular weight of 399, this compound represents one of the smallest known GLP-1R PAMs, and demonstrates other favorable drug-like properties. Site-specific mutagenesis studies confirmed that the binding site of this compound partially overlaps with that of a known antagonist in the transmembrane domain. These results demonstrate that structure-based approach is useful for discovering nonpeptidic allosteric modulators of GLP-1R and the compound reported here is valuable for further drug development.

中文翻译:

通过虚拟筛选和实验研究发现了胰高血糖素样肽1受体的潜在正变构调节剂。

胰高血糖素样肽1受体(GLP-1R)是公认的治疗2型糖尿病的靶标,基于GLP-1R激动剂的疗法代表了一种有效的方法,可产生几种GLP-1类似药物。然而,靶向GLP-1R的非肽激动剂药物的开发仍然没有成功。一种有前途的策略旨在开发口服可生物利用的,GLP1-1R的小分子阳性变构调节剂。利用最近报道的处于活跃状态的GLP-1R的cryo-EM结构,我们进行了基于结构的筛选研究,包括潜在的变构结合位点预测和药物样化合物的计算机筛选,并进行了体外测试和定点诱变研究。一种低分子量化合物被确认为GLP-1R的正变构调节剂,因为它以剂量依赖的方式增强了GLP-1对人GLP-1R的亲和力和功效。该化合物还与GLP-1协同刺激胰岛素分泌。该化合物的分子量为399,是已知的最小的GLP-1R PAM之一,并显示出其他有利的类药物特性。位点特异性诱变研究证实,该化合物的结合位点与跨膜结构域中已知拮抗剂的结合位点部分重叠。这些结果表明,基于结构的方法可用于发现GLP-1R的非肽变构调节剂,此处报道的化合物对于进一步的药物开发非常有价值。对人GLP-1R的亲和力和功效呈剂量依赖性。该化合物还与GLP-1协同刺激胰岛素分泌。该化合物的分子量为399,是已知的最小的GLP-1R PAM之一,并显示出其他有利的类药物特性。位点特异性诱变研究证实,该化合物的结合位点与跨膜结构域中已知拮抗剂的结合位点部分重叠。这些结果表明,基于结构的方法可用于发现GLP-1R的非肽变构调节剂,此处报道的化合物对于进一步的药物开发非常有价值。对人GLP-1R的亲和力和功效呈剂量依赖性。该化合物还与GLP-1协同刺激胰岛素分泌。该化合物的分子量为399,是已知的最小的GLP-1R PAM之一,并显示出其他有利的类药物特性。位点特异性诱变研究证实,该化合物的结合位点与跨膜结构域中已知拮抗剂的结合位点部分重叠。这些结果表明,基于结构的方法可用于发现GLP-1R的非肽变构调节剂,此处报道的化合物对于进一步的药物开发非常有价值。并展示出其他有利的类药物特性。位点特异性诱变研究证实,该化合物的结合位点与跨膜结构域中已知拮抗剂的结合位点部分重叠。这些结果表明,基于结构的方法可用于发现GLP-1R的非肽变构调节剂,此处报道的化合物对于进一步的药物开发非常有价值。并展示出其他有利的类药物特性。位点特异性诱变研究证实,该化合物的结合位点与跨膜结构域中已知拮抗剂的结合位点部分重叠。这些结果表明,基于结构的方法可用于发现GLP-1R的非肽变构调节剂,此处报道的化合物对于进一步的药物开发非常有价值。
更新日期:2019-11-22
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