Structure-Guided Design, Synthesis, and Evaluation of Guanine-Derived Inhibitors of the eIF4E mRNA–Cap Interaction
作者:Xiaoqi Chen、David J. Kopecky、Jeff Mihalic、Shawn Jeffries、Xiaoshan Min、Julie Heath、Jeff Deignan、SuJen Lai、Zice Fu、Cristiano Guimaraes、Shanling Shen、Shyun Li、Sheree Johnstone、Stephen Thibault、Haoda Xu、Mario Cardozo、Wang Shen、Nigel Walker、Frank Kayser、Zhulun Wang
DOI:10.1021/jm300037x
日期:2012.4.26
The eukaryotic initiation factor 4E (eIF4E) plays a central role in the initiation of gene translation and subsequent protein synthesis by binding the 5' terminal mRNA cap structure. We designed and synthesized a series of novel compounds that display potent binding affinity against eIF4E despite their lack of a ribose moiety, phosphate, and positive charge as present in m7-GMP. The biochemical activity of compound 33 is 95 nM for eIF4E in an SPA binding assay. More importantly, the compound has an IC50 of 2.5 mu M for inhibiting cap-dependent mRNA translation in a rabbit reticular cell extract assay (RRL-IVT). This series of potent, truncated analogues could serve as a promising new starting point toward the design of neutral eIF4E inhibitors with physicochemical properties suitable for cellular activity assessment.