Efeito da metil-b-ciclodextrina e de alguns tensoativos sobre a viabilidade celular de linhagens celulares de câncer de ovário
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Data
2011-08-16
Autores
Gonçalves, Nahun Thiaghor Lippaus Pires
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Universidade Federal do Espírito Santo
Resumo
This study sets up a correlation between some surfactants, a derivate of cyclodextrin, cyclic oligosaccharide originated from the action of the glycosyltransferase cyclodextrin, a methyllated β-cyclodextrin and the lines of ovarian cancer A 2780 and OVCAR 3, trying to offering the possibility of using cyclodextrin associated with standard chemotherapy drugs in therapy against ovarian cancer, which is pointed as one of the main causes of death among gynecological ills. Ovarian cancer is connected with high mortality rate and has several histo-clinical subtypes, raising the number of patient diagnosed each year, therefore there are the needy of continuing the scientific research which this kind of cancer is related, once the knowledge developed so far are extremely significant, yet it still is insufficient to generate a cure. Through the cellular viability by MTT method, which uses salt of tetrazol to express quantitatively the proliferation and survival of cells, and Bradford method for standardization data, it attempts to establish the influence of surfactants and some of the derivate of cyclodextrin on and between the lines of ovarian cancer. The methyl-β-cyclodextrin and the surfactant SDS, TX100 and TW20 induced a reduction in dose-dependent mitochondrial activity in cell cultures of ovarian cancer line A 2780 and OVCAR 3. The cyclodextrin derivate has demonstrated induction of gradual reduction of the mitochondrial activity of two from eight concentrations tested (0,2% and 0,4%) with cell viability of approximately 60% in strain A 2780. In the line OVCAR 3 the methyl-β-cyclodextrin shows potential cytotoxic able to tamper 25% of cell growth in conditions of treatment is reduced in this strain when compared with strain A 2780. Due to the properties of cyclodextrins, results of comparative analyzes of cell viability, in the strains of ovarian cancer, indicates to greater possibilities in future studies, enabling the research presented here as a reference.
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Ovarian cancer , Cell viability , Câncer de ovário , β-ciclodextrina , Viabilidade celular