Substituted Naphthalenediimide Compounds Bind Selectively to Two Human Quadruplex Structures with Parallel Topology.
ACS Med Chem Lett
; 11(5): 991-999, 2020 May 14.
Article
em En
| MEDLINE
| ID: mdl-32435416
ABSTRACT
Interactions are reported of three representative naphthalenediimide derivatives with three quadruplex targets, from the promoter region of the telomerase (hTERT) gene, a human telomeric DNA quadruplex, and a telomeric RNA quadruplex (TERRA). Thermal melting studies showed that these compounds strongly stabilize the quadruplexes, with weak stabilization of a duplex DNA. Binding studies by surface plasmon resonance and fluorescence spectroscopy found that the compounds bind to the quadruplexes with nanomolar equilibrium dissociation constants. Plausible topologies for the quadruplex complexes were deduced from CD spectra, which together with the surface plasmon resonance data indicate that the quadruplexes with parallel quadruplex folds are preferred by two compounds, which was confirmed by qualitative molecular modeling.
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01-internacional
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MEDLINE
Idioma:
En
Revista:
ACS Med Chem Lett
Ano de publicação:
2020
Tipo de documento:
Article