The influence of positional isomerism on G-quadruplex binding and anti-proliferative activity of tetra-substituted naphthalene diimide compounds
作者:Sheila Mpima、Stephan A. Ohnmacht、Maria Barletta、Jarmila Husby、Luke C. Pett、Mekala Gunaratnam、Stephen T. Hilton、Stephen Neidle
DOI:10.1016/j.bmc.2013.05.027
日期:2013.10
The synthesis together with biophysical and biological evaluation of a series of tetra-substituted naphthalene diimide (ND) compounds, are presented. These compounds are positional isomers of a recently-described series of quadruplex-binding ND derivatives, in which the two N-methyl-piperidine-alkyl side-chains have now been interchanged with the positions of side-chains bearing a range of end-groups. Molecular dynamics simulations of a pair of positional isomers are in accord with the quadruplex stabilization and biological data for these compounds. Analysis of structure-activity data indicates that for compounds where the side-chains are not of equivalent length then the positional isomers described here tend to have improved cell proliferation potency and in some instances, superior quadruplex stabilization ability. (C) 2013 Elsevier Ltd. All rights reserved.
US20140275062A1
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US9493460B2
申请人:——
公开号:US9493460B2
公开(公告)日:2016-11-15
Structure-Based Design and Evaluation of Naphthalene Diimide G-Quadruplex Ligands As Telomere Targeting Agents in Pancreatic Cancer Cells
作者:Marialuisa Micco、Gavin W. Collie、Aaron G. Dale、Stephan A. Ohnmacht、Ingrida Pazitna、Mekala Gunaratnam、Anthony P. Reszka、Stephen Neidle
DOI:10.1021/jm301899y
日期:2013.4.11
charged termini are potent stabilizers of humantelomeric and genepromoterDNAquadruplexes and inhibit the growth of human cancer cells in vitro and in vivo. The present study reports the enhancement of the pharmacological properties of earlier ND compounds using structure-based design. Crystal structures of three complexes with humantelomeric intramolecular quadruplexes demonstrate that two of the