Targeting Acute Myelogenous Leukemia Using Potent Human Dihydroorotate Dehydrogenase Inhibitors Based on the 2-Hydroxypyrazolo[1,5-<i>a</i>]pyridine Scaffold: SAR of the Biphenyl Moiety
作者:Stefano Sainas、Marta Giorgis、Paola Circosta、Valentina Gaidano、Davide Bonanni、Agnese C. Pippione、Renzo Bagnati、Alice Passoni、Yaqi Qiu、Carina Florina Cojocaru、Barbara Canepa、Alessandro Bona、Barbara Rolando、Mariia Mishina、Cristina Ramondetti、Barbara Buccinnà、Marco Piccinini、Mohammad Houshmand、Alessandro Cignetti、Enrico Giraudo、Salam Al-Karadaghi、Donatella Boschi、Giuseppe Saglio、Marco L. Lolli
DOI:10.1021/acs.jmedchem.0c01549
日期:2021.5.13
The connection with acute myelogenous leukemia (AML) of dihydroorotate dehydrogenase (hDHODH), a key enzyme in pyrimidine biosynthesis, has attracted significant interest from pharma as a possible AML therapeutic target. We recently discovered compound 1, a potent hDHODH inhibitor (IC50 = 1.2 nM), able to induce myeloid differentiation in AML cell lines (THP1) in the low nM range (EC50 = 32.8 nM) superior
二氢乳清酸脱氢酶( h DHODH)是嘧啶生物合成中的关键酶,其与急性髓性白血病(AML)的联系作为可能的 AML 治疗靶点引起了制药公司的极大兴趣。我们最近发现化合物1是一种有效的h DHODH 抑制剂 (IC 50 = 1.2 nM),能够在低 nM 范围内 (EC 50 = 32.8 nM) 诱导 AML 细胞系 (THP1) 中的骨髓分化,其效果优于 brequinar 的 I/II 期药物临床试验(EC 50 = 265 nM)。在此,我们研究了1种药物样特性,观察到以每 3 天 10 和 25 mg/kg 的剂量持续 5 周(Balb/c 小鼠)给药时具有良好的代谢稳定性且无毒性。此外,为了确定备用化合物,我们研究了此类化合物的比吸收率。在该系列中, 17 的特点是具有较高的诱导骨髓分化功效 (EC 50 = 17.3 nM)、强促凋亡特性 (EC 50 = 20.2 nM) 以及对非