Impact of species-dependent differences on screening, design, and development of MAO B inhibitors.
J Med Chem
; 49(21): 6264-72, 2006 Oct 19.
Article
em En
| MEDLINE
| ID: mdl-17034132
ABSTRACT
The impact of species-dependent differences between human and rat MAO B on inhibitor screening was evidenced for two classes of compounds, coumarin and 5H-indeno[1,2-c]pyridazin-5-one derivatives. All examined compounds have shown a greater inhibitor potency toward human MAO B than toward rat MAO B. Moreover, no correlation was found between human and rat pIC(50) values. These divergences have important implications for the design and development of drugs involved in the MAO B metabolic pathway, suggesting that results obtained using rat enzyme cannot be extrapolated to human CNS, a priori. Indeed, the selection of a hit compound for lead generation could be different using human rather than rat enzyme. Moreover, the influence of substituents on the in vitro inhibition of human MAO B was markedly different between homogeneous series of coumarin and 5H-indeno[1,2-c]pyridazin-5-one derivatives, suggesting different binding modes, a hypothesis clearly supported by molecular docking simulations of inhibitors into the active site of human MAO B.
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Base de dados:
MEDLINE
Assunto principal:
Piridazinas
/
Cumarínicos
/
Indenos
/
Monoaminoxidase
/
Inibidores da Monoaminoxidase
Tipo de estudo:
Diagnostic_studies
/
Screening_studies
Limite:
Animals
/
Humans
Idioma:
En
Ano de publicação:
2006
Tipo de documento:
Article