Discovery of novel Bcr-AblT315I inhibitors with flexible linker. Part 1: Confirmation optimization of phenyl-1H-indazol-3-amine as hinge binding moiety
摘要:
As a continuation to our research, a series of novel Bcr-Abl inhibitors incorporated with 6-phenyl-1H-indazol-3-amine as hinge binding moiety (HBM) were developed based on confirmation analysis. Biological results indicated that these compounds exhibited an enhanced inhibition against Bcr-Abl(wT) and Bcr-Abl(T3151) in kinases assays, along with improved anti-proliferative activities in K562 cell assays. In particular, compound Y9 displayed comparable potency with that of imatinib. It potently inhibited Bcr-Abl(wT) and Bcr-Abl(T3151) kinases with IC50 of 0.043 mu M and 0.17 mu M, respectively. Furthermore, compound Y9 inhibited the proliferation of K562 and K562R cells with IC50 of 1.65 mu M and 5.42 mu M, respectively. Therefore, 6-phenyl-1H-indazol-3amine as HBM, combined with flexible linker, is a successful strategy contribute to research on T315I mutant resistance, and compound Y9 could be served as a starting point for further optimization. (C) 2019 Elsevier Masson SAS. All rights reserved.
Design and synthesis of novel pyrrolo[2,3-b]pyridine derivatives targeting V600EBRAF
作者:Mohammed S. Abdel-Maksoud、Eslam M.H. Ali、Usama M. Ammar、Karim I. Mersal、Kyung Ho Yoo、Chang-Hyun Oh
DOI:10.1016/j.bmc.2020.115493
日期:2020.6
Several pyrrolo[2,3-b]pyridine-based B-RAF inhibitors are well known and some of them are currently FDA approved as anticancer agents. Based on the structure of these FDA approved V600EB-RAF inhibitors, two series of pyrrolo[2,3-b]pyridine scaffold were designed and synthesized in attempt to develop new potent V600EB-RAF inhibitors. The 38 synthesized compounds were biologically evaluated for their
Procainamide assay, tracers, immunogens and antibodies
申请人:ABBOTT LABORATORIES
公开号:EP0199042A1
公开(公告)日:1986-10-29
The present invention is directed to a fluorescence polarization immunoassay for procainamide, to the various components needed for preparing and carrying out such an assay, and to methods of making these components. Specifically, tracers, immunogens and antibodies are disclosed, as well as methods for making them. The tracers and the immunogens are made from analogs of procainamide. A fluorescein moiety is included in the tracer while a poly(amino acid) forms a part of the immunogen. The assay is conducted by measuring the degree of ' polarization retention of plane polarized light that has been passed through a sample containing antiserum and tracer.
Targeting tumor stemness is an innovative approach to cancer treatment. Zinc Finger Protein 207 (ZNF207) is a promising target for weakening the stemness of glioma cells. Here, a series of novel N-(anthracen-9-ylmethyl) benzamidederivatives against ZNF207 were rationally designed and synthesized. The inhibitory activity was evaluated, and their structure–activity relationships were summarized. Among
针对肿瘤干性是一种创新的癌症治疗方法。锌指蛋白 207 (ZNF207) 是削弱神经胶质瘤细胞干性的一个有前景的靶点。在此,合理设计并合成了一系列针对ZNF207的新型N- (蒽-9-基甲基)苯甲酰胺衍生物。评估了抑制活性,并总结了它们的构效关系。其中, C16表现出最有效的抑制活性,其抑制球体形成的 IC 50值范围为 0.5-2.5 μM,抑制细胞毒性的 IC 50 值范围为 0.5-15 μM。此外,我们发现C16在体外可以阻碍肿瘤的发生和迁移并促进细胞凋亡。这些影响归因于干相关基因的下调。体内评估表明, C16表现出有效的血脑屏障渗透性,并且在皮下和原位神经胶质瘤模型中具有强大的功效。因此, C16可能作为靶向 ZNF207 的潜在先导化合物,对神经胶质瘤具有良好的治疗潜力。
Expanding the structural diversity of Bcr-Abl inhibitors: Hybrid molecules based on GNF-2 and Imatinib
作者:Xiaoyan Pan、Jinyun Dong、Ruili Shao、Ping Su、Yaling Shi、Jinfeng Wang、Langchong He
DOI:10.1016/j.bmcl.2015.08.013
日期:2015.10
In order to expand the structural diversity of Bcr-Abl inhibitors, twenty hybrids (series E and P) have been synthesized and characterized based on Imatinib and GNF-2. Their biological activities were evaluated in vitro against human leukemia cells. Most compounds exhibited potent antiproliferative activity against K562 cells, especially for compounds E4, E5 and E7. Furthermore, these new hybrids were also screened for Abl kinase inhibitory activity, and some of them inhibited Abl kinase with low micromolar IC50 values. In particular, compound P3 displayed the most potent activity with IC50 value of 0.017 mu M comparable with that of Imatinib. Molecular docking studies indicated that these novel hybrids fitted well with the active site of Bcr-Abl. These results suggested the great potential of these compounds as novel Bcr-Abl inhibitors. (C) 2015 Elsevier Ltd. All rights reserved.