Discovery of Indoleamine 2,3-Dioxygenase 1 (IDO-1) Inhibitors Based on Ortho-Naphthaquinone-Containing Natural Product

There is great interest in developing small molecules agents capable of reversing tumor immune escape to restore the body’s immune system. As an immunosuppressive enzyme, indoleamine 2,3-dioxygenase 1 (IDO-1) is considered a promising target for oncology immunotherapy. Currently, none of I...

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Main Authors: Hongchuan Zhao, Pu Sun, Wei Guo, Yi Wang, Ao Zhang, Linghua Meng, Chunyong Ding
Format: Article
Language:English
Published: MDPI AG 2019-03-01
Series:Molecules
Subjects:
Online Access:http://www.mdpi.com/1420-3049/24/6/1059
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author Hongchuan Zhao
Pu Sun
Wei Guo
Yi Wang
Ao Zhang
Linghua Meng
Chunyong Ding
author_facet Hongchuan Zhao
Pu Sun
Wei Guo
Yi Wang
Ao Zhang
Linghua Meng
Chunyong Ding
author_sort Hongchuan Zhao
collection DOAJ
description There is great interest in developing small molecules agents capable of reversing tumor immune escape to restore the body’s immune system. As an immunosuppressive enzyme, indoleamine 2,3-dioxygenase 1 (IDO-1) is considered a promising target for oncology immunotherapy. Currently, none of IDO-1 inhibitors have been launched for clinical practice yet. Thus, the discovery of new IDO-1 inhibitors is still in great demand. Herein, a series of diverse ortho-naphthaquinone containing natural product derivatives were synthesized as novel IDO-1 inhibitors. Among them, 1-ene-3-ketone-17-hydroxyl derivative 12 exhibited significantly improved enzymatic and cellular inhibitory activity against IDO-1 when compared to initial lead compounds. Besides, the molecular docking study disclosed that the two most potent compounds 11 and 12 have more interactions within the binding pocket of IDO-1 via hydrogen-bonding, which may account for their higher IDO-1 inhibitory activity.
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spelling doaj.art-59b9b962d4ec459fac0e1448e0150ed02022-12-22T02:47:51ZengMDPI AGMolecules1420-30492019-03-01246105910.3390/molecules24061059molecules24061059Discovery of Indoleamine 2,3-Dioxygenase 1 (IDO-1) Inhibitors Based on Ortho-Naphthaquinone-Containing Natural ProductHongchuan Zhao0Pu Sun1Wei Guo2Yi Wang3Ao Zhang4Linghua Meng5Chunyong Ding6CAS Key Laboratory of Receptor Research, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, ChinaDivision of Anti-Tumor Pharmacology, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, ChinaDivision of Anti-Tumor Pharmacology, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, ChinaDivision of Anti-Tumor Pharmacology, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, ChinaCAS Key Laboratory of Receptor Research, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, ChinaDivision of Anti-Tumor Pharmacology, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, ChinaCAS Key Laboratory of Receptor Research, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, ChinaThere is great interest in developing small molecules agents capable of reversing tumor immune escape to restore the body’s immune system. As an immunosuppressive enzyme, indoleamine 2,3-dioxygenase 1 (IDO-1) is considered a promising target for oncology immunotherapy. Currently, none of IDO-1 inhibitors have been launched for clinical practice yet. Thus, the discovery of new IDO-1 inhibitors is still in great demand. Herein, a series of diverse ortho-naphthaquinone containing natural product derivatives were synthesized as novel IDO-1 inhibitors. Among them, 1-ene-3-ketone-17-hydroxyl derivative 12 exhibited significantly improved enzymatic and cellular inhibitory activity against IDO-1 when compared to initial lead compounds. Besides, the molecular docking study disclosed that the two most potent compounds 11 and 12 have more interactions within the binding pocket of IDO-1 via hydrogen-bonding, which may account for their higher IDO-1 inhibitory activity.http://www.mdpi.com/1420-3049/24/6/1059indoleamine 2,3-dioxygenase 1immunosuppressivenatural productortho-naphthaquinonemolecular docking
spellingShingle Hongchuan Zhao
Pu Sun
Wei Guo
Yi Wang
Ao Zhang
Linghua Meng
Chunyong Ding
Discovery of Indoleamine 2,3-Dioxygenase 1 (IDO-1) Inhibitors Based on Ortho-Naphthaquinone-Containing Natural Product
Molecules
indoleamine 2,3-dioxygenase 1
immunosuppressive
natural product
ortho-naphthaquinone
molecular docking
title Discovery of Indoleamine 2,3-Dioxygenase 1 (IDO-1) Inhibitors Based on Ortho-Naphthaquinone-Containing Natural Product
title_full Discovery of Indoleamine 2,3-Dioxygenase 1 (IDO-1) Inhibitors Based on Ortho-Naphthaquinone-Containing Natural Product
title_fullStr Discovery of Indoleamine 2,3-Dioxygenase 1 (IDO-1) Inhibitors Based on Ortho-Naphthaquinone-Containing Natural Product
title_full_unstemmed Discovery of Indoleamine 2,3-Dioxygenase 1 (IDO-1) Inhibitors Based on Ortho-Naphthaquinone-Containing Natural Product
title_short Discovery of Indoleamine 2,3-Dioxygenase 1 (IDO-1) Inhibitors Based on Ortho-Naphthaquinone-Containing Natural Product
title_sort discovery of indoleamine 2 3 dioxygenase 1 ido 1 inhibitors based on ortho naphthaquinone containing natural product
topic indoleamine 2,3-dioxygenase 1
immunosuppressive
natural product
ortho-naphthaquinone
molecular docking
url http://www.mdpi.com/1420-3049/24/6/1059
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