Antibacterial agent discovery using thymidylate synthase biolibrary screening.
J Med Chem
; 49(20): 5958-68, 2006 Oct 05.
Article
en En
| MEDLINE
| ID: mdl-17004711
ABSTRACT
Thymidylate synthase (TS, ThyA) catalyzes the reductive methylation of 2'-deoxyuridine 5'-monophosphate to 2'-deoxythymidine 5'-monophosphate, an essential precursor for DNA synthesis. A specific inhibition of this enzyme induces bacterial cell death. As a second round lead optimization design, new 1,2-naphthalein derivatives have been synthesized and tested against a TS-based biolibrary, including human thymidylate synthase (hTS). Docking studies have been performed to rationalize the experimentally observed affinity profiles of 1,2-naphthalein compounds toward Lactobacillus casei TS and hTS. The best TS inhibitors have been tested against a number of clinical isolates of Gram-positive-resistant bacterial strains. Compound 3,3-bis(3,5-dibromo-4-hydroxyphenyl)-1H,3H-naphtho[1,2-c]furan-1-one (5) showed significant antibacterial activity, no in vitro toxicity, and dose-response effects against Staphylococcus epidermidis (MIC=0.5-2.5 microg/mL) clinical isolate strains, which are resistant to at least 17 of the best known antibacterial agents, including vancomycin. So far this compound can be regarded as a leading antibacterial agent.
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Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Timidilato Sintasa
/
Proteínas Bacterianas
/
Benzofuranos
/
Antibacterianos
/
Naftalenos
Tipo de estudio:
Diagnostic_studies
/
Screening_studies
Límite:
Animals
/
Humans
Idioma:
En
Revista:
J Med Chem
Asunto de la revista:
QUIMICA
Año:
2006
Tipo del documento:
Article
País de afiliación:
Italia