摘要:
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.