Design and synthesis of large Stokes shift DNA dyes with reduced genotoxicity.
Biochem Biophys Res Commun
; 724: 150224, 2024 09 10.
Article
em En
| MEDLINE
| ID: mdl-38851139
ABSTRACT
Despite intensive search over the past decades, only a few small-molecule DNA fluorescent dyes were found with large Stokes shifts. These molecules, however, are often too toxic for widespread usage. Here, we designed DNA-specific fluorescent dyes rooted in benzimidazole architectures with a hitherto unexplored molecular framework based on thiazole-benzimidazole scaffolding. We further incorporated a pyrazole ring with an extended sidechain to prevent cell penetration. These novel benzimidazole derivatives were predicted by quantum calculations and subsequently validated to have large Stokes shifts ranging from 135 to 143 nm, with their emission colors changed from capri blue for the Hoechst reference compound to iguana green. These readily-synthesized compounds, which displayed improved DNA staining intensity and detection limits along with a complete loss of capability for cellular membrane permeation and negligible mutagenic effects as designed, offer a safer alternative to the existing high-performance small-molecule DNA fluorescent dyes.
Palavras-chave
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Benzimidazóis
/
DNA
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Corantes Fluorescentes
Limite:
Humans
Idioma:
En
Revista:
Biochem Biophys Res Commun
/
Biochem. biophys. res. commun
/
Biochemical and biophysical research communications
Ano de publicação:
2024
Tipo de documento:
Article
País de afiliação:
China