Journal
CHEMICO-BIOLOGICAL INTERACTIONS
Volume 242, Issue -, Pages 123-138Publisher
ELSEVIER IRELAND LTD
DOI: 10.1016/j.cbi.2015.07.014
Keywords
Flavonoids; Glioblastoma; Fibronectin; Metalloproteinase; Invasion; Differentiation
Funding
- Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq)
- Fundacao de Aparo a pesquisa do Estado da Bahia (FAPESB) [FAPESB RED0004/2011]
- Fundacao Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior (CAPES) [CNPq-EU 4708007/2011-3]
- Programa de Pos-graducao em Ciencia Animal nos Tropicos - Universidade Federal da Bahia
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The malignant gliomas are very common primary brain tumors with poor prognosis, which require more effective therapies than the current used, such as with chemotherapy drugs. In this work, we investigated the effects of several polyhydroxylated flavonoids namely, rutin, quercetin (F7), apigenin (F32), chrysin (F11), kaempferol (F12), and 3',4'-dihydroxyflavone (F2) in human GL-15 glioblastoma cells. We observed that all flavonoids decreased the number of viable cells and the mitochondrial metabolism. Furthermore, they damaged mitochondria and rough endoplasmic reticulum, inducing apoptosis. Flavonoids also induced a delay in cell migration, related to a reduction in filopodia-like structures on the cell surface, reduction on metalloproteinase (MMP-2) expression and activity, as well as an increase in intra- and extracellular expression of fibronectin, and intracellular expression of laminin. Morphological changes were also evident in adherent cells characterized by the presence of a condensed cell body with thin and long cellular processes, expressing glial fibrillary acidic protein (GFAP). Therefore, these flavonoids should be tested as potential antitumor agents in vitro and in vivo in other malignant glioma models. (C) 2015 Elsevier Ireland Ltd. All rights reserved.
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