Fluorescent phosphoinositide 3-kinase inhibitors suitable for monitoring of intracellular distribution

Donghee Kim, Hyunseung Lee, Hwiseok Jun, Soon Sun Hong, Sungwoo Hong

Research output: Contribution to journalArticlepeer-review

15 Scopus citations

Abstract

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 PI3Kα inhibitors in which part of the fluorophore was engineered to be a pharmacophore capable of inhibiting PI3Kα. These xanthine derivatives are characterized by a donor-acceptor molecular structure, and changes in the electronic properties of the two variation points at R1 and R2 give rise to notable bathochromic shifts in the λem, abs and increase the value of ΦF. Further, we illustrated the use of E2 (PI3Kα/IC 50 = 0.068 μM, T47D cell viability: IC50 = 0.9 μM) to block cancer cell proliferation and to monitor its subcellular localization by fluorescence microscopy.

Original languageEnglish
Pages (from-to)2508-2516
Number of pages9
JournalBioorganic and Medicinal Chemistry
Volume19
Issue number8
DOIs
StatePublished - 15 Apr 2011
Externally publishedYes

Bibliographical note

Funding Information:
This research was supported by National Research Foundation of Korea (NRF) through general research grants (NRF-2010-0015340 and 2010-0022179), by the Korean Health Technology R&D Project (A101185), and by the National R&D Program for Cancer Control (1020250), Ministry for Health, Welfare and Family Affairs, Korea.

Keywords

  • Anticancer
  • Drug design
  • Fluorescent PI3K inhibitor
  • Intracellular distribution

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