Avaliação da atividade antileucêmica in vitro e toxicológica in vivo do composto LQFM-018
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2011-08-31
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Universidade Federal de Goiás
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Cancer is a serious public health problem not only in Brazil but worldwide. Among the various types of cancer known, leukemia is a one of high incidence. In this context, our study aimed to verify the citotoxicity of the compound LQFM-018, in leukemic cells. Both the method of trypan blue exclusion as in the MTT, it was observed a concentration and time dependent response after treatment with the compound LQFM-018. The cell death mechanism was assessed by flow cytometry. The cell cycle analysis showed a decrease of cells in G1 phase with a consequent increase in S phase and G2 / M. The cell death mechanism detected by annexin-V test showed that the K-562 cells were mainly in necrosis. The increased release of LDH also corroborated with the necrotic process. In the treated cells, there was not a significant expression of tumor suppressor protein p-53. The expression of nuclear factor кB increased and decreased expression of ROS. It was also found an increased expression of TNF-R1 receptor, cytochrome-c, decreased ΔΨm and not the expression of proteins Bax and Bcl-2. Acute oral toxicity test was done in vivo. According to the results, the compound LQFM-018 was classified as category 5. The statistical analysis was done using Student t test and ANOVA followed or not by Bonferroni post-test. Was considered statistically significant p<0.05. From these results, we found that the compound LQFM-018 presents potential antitumor activity, but other tests are needed to confirm these results.
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COSTA, F. B. Avaliação da atividade antileucêmica in vitro e toxicológica in vivo do composto LQFM-018. 2011. 110 f. Dissertação (Mestrado em Ciências Farmacêuticas) - Universidade Federal de Goiás, Goiânia, 2011.