Structural and Chemical Basis for Anticancer Activity of a Series of β-Tubulin Ligands: Molecular Modeling and 3D QSAR Studies

نویسندگان

  • Lívia B. Salum
  • Luiz C. Dias
  • Adriano D. Andricopulo
چکیده

Uma estratégia importante para a terapia do câncer é o planejamento de modulares que interferem na dinâmica dos microtúbulos através de sua ligação específica à subunidade β da tubulina. No presente trabalho, estudos de análise comparativa dos campos moleculares (CoMFA) foram realizados com uma série de análogos do discodermolídeo com ação antimitótica. Resultados significativos foram obtidos (CoMFA (i) , q = 0,68, r = 0,94; CoMFA (ii) , q = 0,63, r = 0,91), indicando a elevada consistência interna e externa dos modelos gerados empregando duas estratégias independentes de alinhamento estrutural. Os modelos foram validados externamente com um conjunto teste e os valores preditos apresentaram boa concordância com os resultados experimentais. Os modelos de QSAR e os mapas de contorno 3D forneceram importantes informações sobre as bases químicas e estruturais envolvidas no processo de reconhecimento molecular dessa família de análogos do discodermolídeo, sendo uma valiosa ferramenta no planejamento de novos moduladores específicos da β-tubulina com potente atividade antitumoral.

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تاریخ انتشار 2009