Profiling of Flavonol Derivatives for the Development of Antitrypanosomatidic Drugs
作者:Chiara Borsari、Rosaria Luciani、Cecilia Pozzi、Ina Poehner、Stefan Henrich、Matteo Trande、Anabela Cordeiro-da-Silva、Nuno Santarem、Catarina Baptista、Annalisa Tait、Flavio Di Pisa、Lucia Dello Iacono、Giacomo Landi、Sheraz Gul、Markus Wolf、Maria Kuzikov、Bernhard Ellinger、Jeanette Reinshagen、Gesa Witt、Philip Gribbon、Manfred Kohler、Oliver Keminer、Birte Behrens、Luca Costantino、Paloma Tejera Nevado、Eugenia Bifeld、Julia Eick、Joachim Clos、Juan Torrado、María D. Jiménez-Antón、María J. Corral、José M Alunda、Federica Pellati、Rebecca C. Wade、Stefania Ferrari、Stefano Mangani、Maria Paola Costi
DOI:10.1021/acs.jmedchem.6b00698
日期:2016.8.25
Flavonoids represent a potential source of new antitrypanosomatidic leads. Starting from a library of natural products, we combined target-based screening on pteridine reductase 1 with phenotypic screening on Trypanosoma brucei for hit identification. Flavonols were identified as hits, and a library of 16 derivatives was synthesized. Twelve compounds showed EC50 values against T. brucei below 10 μM
黄酮类化合物代表了新的抗胰蛋白酶前导物的潜在来源。从天然产物库开始,我们将基于靶点的蝶呤还原酶1筛选与基于布鲁氏锥虫的表型筛选相结合,以进行命中鉴定。黄酮醇被鉴定为命中,并合成了16种衍生物的文库。十二种化合物对布鲁氏杆菌的EC 50值低于10μM。四个X射线晶体结构和对接研究解释了观察到的结构与活性之间的关系。选择化合物2(3,6-二羟基-2-(3-羟基苯基)-4 H-铬-4--4-酮)进行药代动力学研究。化合物2的包封与游离化合物相比,PLGA纳米颗粒或环糊精中的α-己内酰胺导致较低的体外毒性。与甲氨蝶呤的组合研究表明,化合物13(3-羟基-6-甲氧基-2-(4-甲氧基苯基)-4 H-铬烯-4-酮)在浓度为1.3μM时具有最高的协同作用,剂量降低了11.7倍指数,对宿主细胞无毒性。我们的结果为进一步的化学修饰提供了基础,这些化学修饰旨在鉴定出对PTR1表现出更高效力并提高了代谢稳定性的新型抗胰体分裂素药物。