Synthesis, biophysical and biological evaluation of 3,6-bis-amidoacridines with extended 9-anilino substituents as potent G-quadruplex-binding telomerase inhibitors
摘要:
Telomerase and telomere maintenance are emerging targets for the treatment of human cancers. We report here on the targeting of the telomere-telomerase complex with a series of small molecules based on an acridine platform. A series of 3,6-bis-amidoacridines with extended 9-anilino sidechains were designed and synthesised as potential telomeric G-quadruplex DNA (G4) interacting compounds. G4-stabilisation was assessed using a high-throughput FRET (fluorescence resonance energy transfer) assay and telomerase inhibition quantified by a modified TRAP (telomerase repeat amplification protocol) method. Within the series, the compounds showed significant G4-stabilising ability (DeltaT(m) values of 25-36degreesC at 1 muM concentration) and telomerase inhibition in the nanomolar region ((EC50)-E-tel values of 80-318 nM). Furthermore, a direct correlation between the FRET and TRAP assays was observed, supporting the use of the rapid screening FRET assay for early assessment of potential G4-stabilising telomerase inhibitors. (C) 2004 Elsevier Ltd. All rights reserved.
SEROLOGICAL REACTIONS WITH SIMPLE CHEMICAL COMPOUNDS (PRECIPITIN REACTIONS)
作者:K. Landsteiner、J. van der Scheer
DOI:10.1084/jem.56.3.399
日期:1932.9.1
These precipitinreactions prove conclusively the view already advanced on the basis of inhibition reactions that antibodies combine specifically with substances of small molecular weight. Although in this respect both phenomena have the same significance, the precipitinreactions with dyes are simpler in that the aid of a protein antigen is eliminated. That specific serological precipitin reactions
Synthesis, biophysical and biological evaluation of 3,6-bis-amidoacridines with extended 9-anilino substituents as potent G-quadruplex-binding telomerase inhibitors
作者:Christoph M Schultes、Bérangère Guyen、Javier Cuesta、Stephen Neidle
DOI:10.1016/j.bmcl.2004.05.090
日期:2004.8
Telomerase and telomere maintenance are emerging targets for the treatment of human cancers. We report here on the targeting of the telomere-telomerase complex with a series of small molecules based on an acridine platform. A series of 3,6-bis-amidoacridines with extended 9-anilino sidechains were designed and synthesised as potential telomeric G-quadruplex DNA (G4) interacting compounds. G4-stabilisation was assessed using a high-throughput FRET (fluorescence resonance energy transfer) assay and telomerase inhibition quantified by a modified TRAP (telomerase repeat amplification protocol) method. Within the series, the compounds showed significant G4-stabilising ability (DeltaT(m) values of 25-36degreesC at 1 muM concentration) and telomerase inhibition in the nanomolar region ((EC50)-E-tel values of 80-318 nM). Furthermore, a direct correlation between the FRET and TRAP assays was observed, supporting the use of the rapid screening FRET assay for early assessment of potential G4-stabilising telomerase inhibitors. (C) 2004 Elsevier Ltd. All rights reserved.