PMID- 31580660 OWN - NLM STAT- MEDLINE DCOM- 20200615 LR - 20200615 IS - 1520-4804 (Electronic) IS - 0022-2623 (Linking) VI - 62 IP - 20 DP - 2019 Oct 24 TI - N-Benzyl/Aryl Substituted Tryptanthrin as Dual Inhibitors of Indoleamine 2,3-Dioxygenase and Tryptophan 2,3-Dioxygenase. PG - 9161-9174 LID - 10.1021/acs.jmedchem.9b01079 [doi] AB - Indoleamine 2,3-dioxygenase 1 (IDO1), which catalyzes the initial and rate-limiting step of the kynurenine pathway of tryptophan catabolism, has emerged as a key target in cancer immunotherapy because of its role in enabling cancers to evade the immune system. Tryptophan 2,3-dioxygenase (TDO) and indoleamine 2,3-dioxygenase 2 (IDO2) catalyze the same reaction and play a potential role in cancer immunotherapy. Starting from our previously discovered tryptanthrin IDO1 inhibitor scaffold, we synthesized novel N-benzyl/aryl substituted tryptanthrin derivatives and evaluated their inhibitory efficacy on IDO1, TDO, and IDO2. Most compounds showed similar high inhibitory activities on both IDO1 and TDO, which were significantly superior over that of IDO2 with magnitude difference. We showed that N-benzyl/aryl substituted tryptanthrin directly interacted with IDO1, TDO, and IDO2, significantly augmented the proliferation of T cells in vitro, blocked the kynurenine pathway, and suppressed tumor growth when administered to LLC and H22 tumor-bearing mice. FAU - Yang, Dan AU - Yang D AD - State Key Laboratory of Genetic Engineering, Department of Biochemistry, School of Life Sciences , Fudan University , Songhu Road 2005 , Shanghai 200438 , China. FAU - Zhang, Shengnan AU - Zhang S AD - State Key Laboratory of Genetic Engineering, Department of Biochemistry, School of Life Sciences , Fudan University , Songhu Road 2005 , Shanghai 200438 , China. FAU - Fang, Xin AU - Fang X AD - State Key Laboratory of Genetic Engineering, Department of Biochemistry, School of Life Sciences , Fudan University , Songhu Road 2005 , Shanghai 200438 , China. FAU - Guo, Leilei AU - Guo L AD - State Key Laboratory of Genetic Engineering, Department of Biochemistry, School of Life Sciences , Fudan University , Songhu Road 2005 , Shanghai 200438 , China. FAU - Hu, Nan AU - Hu N AD - State Key Laboratory of Genetic Engineering, Department of Biochemistry, School of Life Sciences , Fudan University , Songhu Road 2005 , Shanghai 200438 , China. FAU - Guo, Zhanling AU - Guo Z AD - State Key Laboratory of Genetic Engineering, Department of Biochemistry, School of Life Sciences , Fudan University , Songhu Road 2005 , Shanghai 200438 , China. FAU - Li, Xishuai AU - Li X AD - State Key Laboratory of Genetic Engineering, Department of Biochemistry, School of Life Sciences , Fudan University , Songhu Road 2005 , Shanghai 200438 , China. FAU - Yang, Shuangshuang AU - Yang S AD - State Key Laboratory of Genetic Engineering, Department of Biochemistry, School of Life Sciences , Fudan University , Songhu Road 2005 , Shanghai 200438 , China. FAU - He, Jin Chao AU - He JC AD - State Key Laboratory of Genetic Engineering, Department of Biochemistry, School of Life Sciences , Fudan University , Songhu Road 2005 , Shanghai 200438 , China. FAU - Kuang, Chunxiang AU - Kuang C AD - Department of Chemistry , Tongji University , Siping Road 1239 , Shanghai 200092 , China. FAU - Yang, Qing AU - Yang Q AUID- ORCID: 0000-0003-4162-922X AD - State Key Laboratory of Genetic Engineering, Department of Biochemistry, School of Life Sciences , Fudan University , Songhu Road 2005 , Shanghai 200438 , China. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20191003 PL - United States TA - J Med Chem JT - Journal of medicinal chemistry JID - 9716531 RN - 0 (Enzyme Inhibitors) RN - 0 (IDO1 protein, mouse) RN - 0 (Indoleamine-Pyrrole 2,3,-Dioxygenase) RN - 0 (Isoenzymes) RN - 0 (Quinazolines) RN - 0 (RNA, Small Interfering) RN - 13220-57-0 (tryptanthrine) RN - EC 1.13.11.11 (Tryptophan Oxygenase) SB - IM MH - Animals MH - Cell Line, Tumor MH - Cell Proliferation/drug effects MH - Enzyme Inhibitors/*chemistry/pharmacology/therapeutic use MH - Female MH - Humans MH - Indoleamine-Pyrrole 2,3,-Dioxygenase/*antagonists & inhibitors/genetics/metabolism MH - Isoenzymes/antagonists & inhibitors/metabolism MH - Mice MH - Mice, Inbred C57BL MH - Mice, Knockout MH - Neoplasms/drug therapy/pathology MH - Quinazolines/*chemistry/metabolism/pharmacology MH - RNA Interference MH - RNA, Small Interfering/metabolism MH - Structure-Activity Relationship MH - Tryptophan Oxygenase/*antagonists & inhibitors/metabolism EDAT- 2019/10/04 06:00 MHDA- 2020/06/17 06:00 CRDT- 2019/10/04 06:00 PHST- 2019/10/04 06:00 [pubmed] PHST- 2020/06/17 06:00 [medline] PHST- 2019/10/04 06:00 [entrez] AID - 10.1021/acs.jmedchem.9b01079 [doi] PST - ppublish SO - J Med Chem. 2019 Oct 24;62(20):9161-9174. doi: 10.1021/acs.jmedchem.9b01079. Epub 2019 Oct 3.