Structure activity relationship (SAR) study identifies a quinoxaline urea analog that modulates IKKβ phosphorylation for pancreatic cancer therapy
作者:Satish Sagar、Sarbjit Singh、Jayapal Reddy Mallareddy、Yogesh A. Sonawane、John V. Napoleon、Sandeep Rana、Jacob I. Contreras、Christabelle Rajesh、Edward L. Ezell、Smitha Kizhake、Jered C. Garrison、Prakash Radhakrishnan、Amarnath Natarajan
DOI:10.1016/j.ejmech.2021.113579
日期:2021.10
conducted structure activity relationship (SAR) study to improve potency and oral bioavailability of a quinoxaline analog 13–197 that was previously reported as a NFκB inhibitor for pancreatic cancer therapy. The SAR led to the identification of a novel quinoxaline urea analog 84 that reduced the levels of p-IKKβ in dose- and time-dependent studies. When compared to 13–197, analog 84 was ∼2.5-fold more
遗传模型验证了核因子 (NF) κ B 激酶β (IKKβ) 抑制剂作为 KRAS 突变相关胰腺癌的治疗靶点。IKKβ中激活环丝氨酸残基(S 177,S 181)的磷酸化是驱动肿瘤坏死因子(TNF)α诱导的NF-κB介导的基因表达的关键事件。在这里,我们进行了结构活性关系 (SAR) 研究,以提高喹喔啉类似物 13-197 的效力和口服生物利用度,该类似物先前被报道为胰腺癌治疗的 NFκB 抑制剂。SAR 导致发现了一种新的喹喔啉尿素类似物84,它在剂量和时间依赖性研究中降低了 p-IKKβ 的水平。与 13–197 相比,模拟84对 TNFα 诱导的 NFκB 抑制作用强 2.5 倍,抑制胰腺癌细胞生长的作用强 4 倍。模拟84的暴露量增加了 4.3 倍(AUC 0-∞) 与 13-197 相比,导致口服生物利用度 (%F) 增加约 5.7 倍。重要的是,在异种移植模型中,单独口服84和与吉西他滨联合使用可降低