Phenyl Benzenesulfonylhydrazides Exhibit Selective Indoleamine 2,3-Dioxygenase Inhibition with Potent <i>in Vivo</i> Pharmacodynamic Activity and Antitumor Efficacy
作者:Shu-Yu Lin、Teng-Kuang Yeh、Ching-Chuan Kuo、Jen-Shin Song、Ming-Fu Cheng、Fang-Yu Liao、Min-Wu Chao、Han-Li Huang、Yi-Lin Chen、Chun-Yu Yang、Mine-Hsine Wu、Chia-Ling Hsieh、Wenchi Hsiao、Yi-Hui Peng、Jian-Sung Wu、Li-Mei Lin、Manwu Sun、Yu-Sheng Chao、Chuan Shih、Su-Ying Wu、Shiow-Lin Pan、Ming-Shiu Hung、Shau-Hua Ueng
DOI:10.1021/acs.jmedchem.5b01640
日期:2016.1.14
Tryptophan metabolism has been recognized as an important mechanism in immune tolerance. Indoleamine 2,3-dioxygenase plays a key role in local tryptophan metabolism via the kynurenine pathway and has emerged as a therapeutic target for cancer immunotherapy. Our prior study identified phenyl benzenesulfonyl hydrazide 2 as a potent in vitro (though not in vivo) inhibitor of indoleamine 2,3-dioxygenase. Further lead optimization to improve in vitro potencies and pharmacokinetic profiles resulted in N'-(4-bromophenyl)-2-oxo-2,3-dihydro-1H-indole-5-sulfonyl hydrazide 40, which demonstrated 59% oral bioavailability and 73% of tumor growth delay without apparent body weight loss in the murine CT26 syngeneic model, after oral administration of 400 mg/kg. Accordingly, 40, is proposed as a potential drug lead worthy of advanced preclinical evaluation.