Discovery of a non‐nucleotide stimulator of interferon genes (STING) agonist with systemic antitumor effect

Abstract Agonists of the stimulator of interferon genes (STING) pathway are increasingly being recognized as a promising new approach in the treatment of cancer. Although progress in clinical trials for STING agonists in antitumor applications has been slow, there is still an urgent need for develop...

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Main Authors: Xiyuan Wang, Zhengsheng Zhan, Zhen Wang, Yan Zhang, Kaiyan Zhao, Han Li, Xiaoqian Zhou, Yuting Guo, Fengying Fan, Jian Ding, Meiyu Geng, Xuekui Yu, Wenhu Duan, Zuoquan Xie
Format: Article
Language:English
Published: Wiley 2025-01-01
Series:MedComm
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Online Access:https://doi.org/10.1002/mco2.70001
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author Xiyuan Wang
Zhengsheng Zhan
Zhen Wang
Yan Zhang
Kaiyan Zhao
Han Li
Xiaoqian Zhou
Yuting Guo
Fengying Fan
Jian Ding
Meiyu Geng
Xuekui Yu
Wenhu Duan
Zuoquan Xie
author_facet Xiyuan Wang
Zhengsheng Zhan
Zhen Wang
Yan Zhang
Kaiyan Zhao
Han Li
Xiaoqian Zhou
Yuting Guo
Fengying Fan
Jian Ding
Meiyu Geng
Xuekui Yu
Wenhu Duan
Zuoquan Xie
author_sort Xiyuan Wang
collection DOAJ
description Abstract Agonists of the stimulator of interferon genes (STING) pathway are increasingly being recognized as a promising new approach in the treatment of cancer. Although progress in clinical trials for STING agonists in antitumor applications has been slow, there is still an urgent need for developing new potent STING agonists with versatile potential applications. Herein, we developed and identified a non‐nucleotide STING agonist called DW18343. DW18343 showed robust activation across different STING isoforms. Crystallography analysis revealed that DW18343 binds more deeply into the ligand binding domain (LBD) pocket of STING‐H232 compared to other agonists such as MSA‐2, SR‐717, or cGAMP, which likely contributes to its high potency. DW18343 triggered downstream p‐TBK1/p‐IRF3 signaling, leading to the production of multiple cytokines. Additionally, DW18343 displayed broad and long‐lasting antitumor effects in various syngeneic mouse tumor models, whether administered locally or systemically. Moreover, DW18343 induced immune memory to combat the growth of rechallenged tumors. Finally, DW18343 was shown to be an activator of both the innate and adaptive antitumor immunity in tumor tissue, potentially explaining its strong antitumor effects in vivo. In conclusion, DW18343 serves as a novel non‐nucleotide STING agonist with systemic antitumor effect through the activation of antitumor immunity.
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spelling doaj-art-f4f20cd8928a48c88b1e9a24b45938302025-01-20T01:45:44ZengWileyMedComm2688-26632025-01-0161n/an/a10.1002/mco2.70001Discovery of a non‐nucleotide stimulator of interferon genes (STING) agonist with systemic antitumor effectXiyuan Wang0Zhengsheng Zhan1Zhen Wang2Yan Zhang3Kaiyan Zhao4Han Li5Xiaoqian Zhou6Yuting Guo7Fengying Fan8Jian Ding9Meiyu Geng10Xuekui Yu11Wenhu Duan12Zuoquan Xie13State Key Laboratory of Drug Research Shanghai Institute of Materia Medica Chinese Academy of Sciences Shanghai ChinaSmall‐Molecule Drug Research Center Shanghai Institute of Materia Medica Chinese Academy of Sciences Shanghai ChinaCryo‐Electron Microscopy Research Center & The CAS Key Laboratory of Receptor Research Shanghai Institute of Materia Medica Chinese Academy of Sciences Shanghai ChinaState Key Laboratory of Drug Research Shanghai Institute of Materia Medica Chinese Academy of Sciences Shanghai ChinaSmall‐Molecule Drug Research Center Shanghai Institute of Materia Medica Chinese Academy of Sciences Shanghai ChinaState Key Laboratory of Drug Research Shanghai Institute of Materia Medica Chinese Academy of Sciences Shanghai ChinaSmall‐Molecule Drug Research Center Shanghai Institute of Materia Medica Chinese Academy of Sciences Shanghai ChinaSmall‐Molecule Drug Research Center Shanghai Institute of Materia Medica Chinese Academy of Sciences Shanghai ChinaUniversity of Chinese Academy of Sciences Beijing ChinaState Key Laboratory of Drug Research Shanghai Institute of Materia Medica Chinese Academy of Sciences Shanghai ChinaState Key Laboratory of Drug Research Shanghai Institute of Materia Medica Chinese Academy of Sciences Shanghai ChinaUniversity of Chinese Academy of Sciences Beijing ChinaSmall‐Molecule Drug Research Center Shanghai Institute of Materia Medica Chinese Academy of Sciences Shanghai ChinaState Key Laboratory of Drug Research Shanghai Institute of Materia Medica Chinese Academy of Sciences Shanghai ChinaAbstract Agonists of the stimulator of interferon genes (STING) pathway are increasingly being recognized as a promising new approach in the treatment of cancer. Although progress in clinical trials for STING agonists in antitumor applications has been slow, there is still an urgent need for developing new potent STING agonists with versatile potential applications. Herein, we developed and identified a non‐nucleotide STING agonist called DW18343. DW18343 showed robust activation across different STING isoforms. Crystallography analysis revealed that DW18343 binds more deeply into the ligand binding domain (LBD) pocket of STING‐H232 compared to other agonists such as MSA‐2, SR‐717, or cGAMP, which likely contributes to its high potency. DW18343 triggered downstream p‐TBK1/p‐IRF3 signaling, leading to the production of multiple cytokines. Additionally, DW18343 displayed broad and long‐lasting antitumor effects in various syngeneic mouse tumor models, whether administered locally or systemically. Moreover, DW18343 induced immune memory to combat the growth of rechallenged tumors. Finally, DW18343 was shown to be an activator of both the innate and adaptive antitumor immunity in tumor tissue, potentially explaining its strong antitumor effects in vivo. In conclusion, DW18343 serves as a novel non‐nucleotide STING agonist with systemic antitumor effect through the activation of antitumor immunity.https://doi.org/10.1002/mco2.70001antitumorimmune memoryinnate immunitySTING agonist
spellingShingle Xiyuan Wang
Zhengsheng Zhan
Zhen Wang
Yan Zhang
Kaiyan Zhao
Han Li
Xiaoqian Zhou
Yuting Guo
Fengying Fan
Jian Ding
Meiyu Geng
Xuekui Yu
Wenhu Duan
Zuoquan Xie
Discovery of a non‐nucleotide stimulator of interferon genes (STING) agonist with systemic antitumor effect
MedComm
antitumor
immune memory
innate immunity
STING agonist
title Discovery of a non‐nucleotide stimulator of interferon genes (STING) agonist with systemic antitumor effect
title_full Discovery of a non‐nucleotide stimulator of interferon genes (STING) agonist with systemic antitumor effect
title_fullStr Discovery of a non‐nucleotide stimulator of interferon genes (STING) agonist with systemic antitumor effect
title_full_unstemmed Discovery of a non‐nucleotide stimulator of interferon genes (STING) agonist with systemic antitumor effect
title_short Discovery of a non‐nucleotide stimulator of interferon genes (STING) agonist with systemic antitumor effect
title_sort discovery of a non nucleotide stimulator of interferon genes sting agonist with systemic antitumor effect
topic antitumor
immune memory
innate immunity
STING agonist
url https://doi.org/10.1002/mco2.70001
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