A computational chemistry-based approach to optimizing PD-1/PD-L1 inhibitors

IntroductionTo design effective small molecule inhibitors targeting the immune checkpoint PD-1/PD-L1 and to explore their inhibitory activity.MethodsIn this paper, a total of 69 PD-1/PD-L1 inhibitors with the same backbone were searched through opendatabases, and their docking mechanism with PD-L1 p...

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Main Authors: Meijuan Zhai, Shiliang Ji, Haoran Hu, Yongjie Wu, Yi Shi, Ruifang Zhu, Yiguo Jiang, Yang Yang
Format: Article
Language:English
Published: Frontiers Media S.A. 2025-01-01
Series:Frontiers in Chemistry
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Online Access:https://www.frontiersin.org/articles/10.3389/fchem.2024.1533541/full
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author Meijuan Zhai
Shiliang Ji
Haoran Hu
Yongjie Wu
Yi Shi
Ruifang Zhu
Yiguo Jiang
Yang Yang
author_facet Meijuan Zhai
Shiliang Ji
Haoran Hu
Yongjie Wu
Yi Shi
Ruifang Zhu
Yiguo Jiang
Yang Yang
author_sort Meijuan Zhai
collection DOAJ
description IntroductionTo design effective small molecule inhibitors targeting the immune checkpoint PD-1/PD-L1 and to explore their inhibitory activity.MethodsIn this paper, a total of 69 PD-1/PD-L1 inhibitors with the same backbone were searched through opendatabases, and their docking mechanism with PD-L1 protein was investigatedby molecular docking method, and the active conformation of the inhibitors was explored. The biological activity of the four newly designed inhibitors was also evaluated using ELISA.ResultsThe most active molecule 58 in the dataset formed six hydrogen bonds with Phe67, Val55, Ile116 and Tyr123, while the second most active molecule 34 formed five hydrogen bonds with Phe67 and Ala121, both of which formed π-π stacking interactions with Tyr56. The analysis of the inhibitor docking results determined that the residues Tyr123, Gln66, Thr20, Met115, Asp122 and Ile116 had the greatest influence on the active conformation of the inhibitor. ELISA assays suggested that the four novel inhibitors designed had high inhibition rates, with the inhibition rate of compound N2 being as high as 68.53%.DiscussionIn this paper, we have designed and synthesized various PD-1/PDL1 inhibitors, which provide a basis for drug discovery targeting the PD-1/PDL1 signaling pathway.
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spelling doaj-art-fc90be51969642df9b5b0c56f43a82352025-01-14T06:10:32ZengFrontiers Media S.A.Frontiers in Chemistry2296-26462025-01-011210.3389/fchem.2024.15335411533541A computational chemistry-based approach to optimizing PD-1/PD-L1 inhibitorsMeijuan Zhai0Shiliang Ji1Haoran Hu2Yongjie Wu3Yi Shi4Ruifang Zhu5Yiguo Jiang6Yang Yang7Department of pharmacy, The Affiliated Suzhou Hospital of Nanjing Medical University (Suzhou Municipal Hospital), Gusu School, Nanjing Medical University, Suzhou, ChinaSuzhou Research Center of Medical School, Suzhou Hospital, Affiliated Hospital of Medical School, Nanjing University, Suzhou, ChinaState Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, ChinaState Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing, ChinaSuzhou Research Center of Medical School, Suzhou Hospital, Affiliated Hospital of Medical School, Nanjing University, Suzhou, ChinaSuzhou Research Center of Medical School, Suzhou Hospital, Affiliated Hospital of Medical School, Nanjing University, Suzhou, ChinaSuzhou Research Center of Medical School, Suzhou Hospital, Affiliated Hospital of Medical School, Nanjing University, Suzhou, ChinaSuzhou Research Center of Medical School, Suzhou Hospital, Affiliated Hospital of Medical School, Nanjing University, Suzhou, ChinaIntroductionTo design effective small molecule inhibitors targeting the immune checkpoint PD-1/PD-L1 and to explore their inhibitory activity.MethodsIn this paper, a total of 69 PD-1/PD-L1 inhibitors with the same backbone were searched through opendatabases, and their docking mechanism with PD-L1 protein was investigatedby molecular docking method, and the active conformation of the inhibitors was explored. The biological activity of the four newly designed inhibitors was also evaluated using ELISA.ResultsThe most active molecule 58 in the dataset formed six hydrogen bonds with Phe67, Val55, Ile116 and Tyr123, while the second most active molecule 34 formed five hydrogen bonds with Phe67 and Ala121, both of which formed π-π stacking interactions with Tyr56. The analysis of the inhibitor docking results determined that the residues Tyr123, Gln66, Thr20, Met115, Asp122 and Ile116 had the greatest influence on the active conformation of the inhibitor. ELISA assays suggested that the four novel inhibitors designed had high inhibition rates, with the inhibition rate of compound N2 being as high as 68.53%.DiscussionIn this paper, we have designed and synthesized various PD-1/PDL1 inhibitors, which provide a basis for drug discovery targeting the PD-1/PDL1 signaling pathway.https://www.frontiersin.org/articles/10.3389/fchem.2024.1533541/fullnon-small cell lung cancerPD-1 inhibitorPD-L1 inhibitormolecular dockingcomputer-aided drug design
spellingShingle Meijuan Zhai
Shiliang Ji
Haoran Hu
Yongjie Wu
Yi Shi
Ruifang Zhu
Yiguo Jiang
Yang Yang
A computational chemistry-based approach to optimizing PD-1/PD-L1 inhibitors
Frontiers in Chemistry
non-small cell lung cancer
PD-1 inhibitor
PD-L1 inhibitor
molecular docking
computer-aided drug design
title A computational chemistry-based approach to optimizing PD-1/PD-L1 inhibitors
title_full A computational chemistry-based approach to optimizing PD-1/PD-L1 inhibitors
title_fullStr A computational chemistry-based approach to optimizing PD-1/PD-L1 inhibitors
title_full_unstemmed A computational chemistry-based approach to optimizing PD-1/PD-L1 inhibitors
title_short A computational chemistry-based approach to optimizing PD-1/PD-L1 inhibitors
title_sort computational chemistry based approach to optimizing pd 1 pd l1 inhibitors
topic non-small cell lung cancer
PD-1 inhibitor
PD-L1 inhibitor
molecular docking
computer-aided drug design
url https://www.frontiersin.org/articles/10.3389/fchem.2024.1533541/full
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