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J Biomol Screen ; 18(6): 659-69, 2013 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-23458757

RESUMO

The TrkA-PathHunter cell-based assay was used in high-throughput screening (HTS) to identify compounds that inhibit nerve growth factor (NGF)/TrkA signaling. The assay was conducted in a 384-well format, and typical Z' values during HTS ranged from 0.3 to 0.8. The reproducibility of IC50 values was good, and the use of cryopreserved cells was well tolerated, as judged by assay parameters such as Z' and S/B and by comparison of IC50 values obtained with cells in culture. During hit deconvolution, TrkA-kinase inhibitors were identified with ATP-competitive as well as non-ATP-competitive mechanisms of action. Furthermore, other mechanisms of action such as NGF and TrkA antagonists were also identified. Because of the different molecular mechanisms identified, it is possible that subsequent optimization work to increase affinity and selectivity might lead to compounds that could have a better chance to evoke clinical efficacy without the adverse effects observed for nonselective TrkA inhibitors.


Assuntos
Ensaios de Triagem em Larga Escala/métodos , Fator de Crescimento Neural/metabolismo , Inibidores de Proteínas Quinases/farmacologia , Receptor trkA/metabolismo , Transdução de Sinais/efeitos dos fármacos , Trifosfato de Adenosina/metabolismo , Linhagem Celular , Humanos , Concentração Inibidora 50 , Fator de Crescimento Neural/antagonistas & inibidores , Neuritos/efeitos dos fármacos , Neuritos/metabolismo , Receptor trkA/antagonistas & inibidores
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