作者:Braun, Marie-Gabrielle、Ashkenazi, Avi、Beveridge, Ramsay E.、Castanedo, Georgette、Wallweber, Heidi Ackerly、Beresini, Maureen H.、Clark, Kevin R.、De Bruyn, Tom、Fu, Liqiang、Gibbons, Paul、Jiang, Fan、Kaufman, Susan、Kan, David、Kiefer, James R.、Leclerc, Jean-Philippe、Lemire, Alexandre、Ly, Cuong、Segal, Ehud、Sims, Jessica、Wang, Weiru、Wei, Wentao、Zhao, Liang、Schwarz, Jacob B.、Rudolph, Joachim
DOI:10.1021/acs.jmedchem.3c02425
日期:——
culminated in the identification of a potent and selective in vivo tool compound, G-5758, that was well tolerated following multiday oral administration of doses up to 500 mg/kg. G-5758 demonstrated comparable pharmacodynamic effects to induced IRE1 knockdown as measured by XBP1s levels in a multiple myeloma model (KMS-11).
由于缺乏选择性和安全的体内 IRE1α 工具分子,限制了 IRE1α 作为治疗多发性骨髓瘤的可行靶点的评估。专注于通过降低亲脂性、分子量和碱度来改善文献化合物的理化性质,从而发现了具有良好体外安全性和良好口服暴露性的新系列。这些努力最终鉴定出一种有效且选择性的体内工具化合物G-5758 ,在多日口服剂量高达 500 mg/kg 后具有良好的耐受性。在多发性骨髓瘤模型 (KMS-11) 中通过 XBP1s 水平测量, G-5758表现出与诱导 IRE1 敲低相当的药效学效果。