Full Length Research Paper
Abstract
Amburana cearensis A. C. Smith (Fabaceae) is a plant of Brazil, popularly known as umburana or cumaru, and is widely used in folk medicine. The population uses its bark and seeds against many pathologies including cancer. The aim of this study was to examine the antiproliferative effect of A. cearensis extracts on human tumor cell lines of HT-29 colon adenocarcinoma and HepG2 hepatocellular carcinoma, as well as on normal mouse fibroblasts L929. This study consists of in vitro tests with extracts obtained from A. cearensis seeds with solvents of increasing polarity against neoplastic and normal cell lines. Knowing that A. cearensis extracts are rich in coumarins and have high antioxidant activity, aspects related to antineoplastic activity and cytotoxicity of four different extracts was evaluated. A. cearensis extracts were analyzed in cancer cells using the MTT assay. Cytotoxicity data demonstrated that methanolic extract (MEA) has activity against HT-29 cell line (IC50 18.8 ± 0.4 µg mL-1) while normal fibroblasts L929 and HepG2 cells were not affected by the extract. The crude seed extracts of A. cearensis did not demonstrate a cytotoxic effect against the cancer cell used in this study; however, the MEA extract can also be promising for this purpose.
Key words: Amburana cearensis, cytotoxicity, antiproliferative, tumor cell, coumarin.
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