Fluorescent phosphoinositide 3-kinase inhibitors suitable for monitoring of intracellular distribution
作者:Donghee Kim、Hyunseung Lee、Hwiseok Jun、Soon-Sun Hong、Sungwoo Hong
DOI:10.1016/j.bmc.2011.03.025
日期:2011.4
The monitoring of the drug behavior and distribution in biological system can provide information whether drug reaches its desired target, and a biological rationale for the design of new therapeutics. We have developed a family of potent fluorescent PI3K alpha inhibitors in which part of the fluorophore was engineered to be a pharmacophore capable of inhibiting PI3K alpha. These xanthine derivatives are characterized by a donor-acceptor molecular structure, and changes in the electronic properties of the two variation points at R-1 and R-2 give rise to notable bathochromic shifts in the lambda(em), (abs) and increase the value of Phi(F). Further, we illustrated the use of E2 (PI3K alpha/IC50 = 0.068 mu M, T47D cell viability: IC50 = 0.9 mu M) to block cancer cell proliferation and to monitor its subcellular localization by fluorescence microscopy. (C) 2011 Elsevier Ltd. All rights reserved.
Development of New Fluorescent Xanthines as Kinase Inhibitors
作者:Donghee Kim、Hwiseok Jun、Hyunseung Lee、Soon-Sun Hong、Sungwoo Hong
DOI:10.1021/ol100011n
日期:2010.3.19
An efficient and versatile synthetic approach for the preparation of highly substituted xanthine derivatives has been developed by a combination of direct N7- and C8-arylation. With this method, diverse xanthine analogues were prepared and potent kinase inhibitors could be identified. For example, compound 8a Inhibits PI3Ks and proliferation in T47D tumor cells. In addition, these xanthine-based kinase inhibitors exhibited significant fluorescence emission in a concentration-dependent response.