RESUMO: "Indução de apoptose pelo princípio ativo citotóxico de Espeletia killipii Cuatr. sobre linhagens celulares humanas". O acetato de longipilina, o princípio ativo citotóxico, isolado de Espeletia killipii Cuatr., uma planta endêmica de Colômbia, é uma sesquiterpenlactona que tem a propriedade de induzir apoptose em algumas linhagens celulares de câncer de mama como MCF-7 e CSC-1595 (obtidas do Instituto Nacional de Cancerologia, Bogotá -Colômbia). Reconhecimento morfológico, método de Tunel e citometria de fl uxo foram utilizados para avaliar a atividade apoptótica. Os resultados mostraram que a longipilina é um potencial agente antitumoral.Unitermos: Espeletia killipii, Asteraceae, sesquiterpenlactona, atividade apoptótica.
ABSTRACT: "Induction of apoptosis by the citotoxic active principle of Espeletia killipiiCuatr. on human cell lines". Longipilin acetate is the compound exhibiting cytotoxicity, isolated from endemic plant specie from Colombia, South America, Espeletia killipii Cuatr. Longipilin acetate is a sesquiterpenelactone having the ability to induce apoptosis in several breast cancer cell-lines like MCF-7 y CSC-1595 (obtained from National Cancer Institute, Bogotá Colombia), Morphological examination, nuclear DNA fragmentation, tunel and fl ow cytometry were used to evaluate apoptosis. Therefore longipilin acetate is a compound showing potential as an antitumor agent.
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