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Log inINTRODUCTION AND OBJECTIVES: The development of biopharmaceuticals has been a prominent area in science due to the great discovery of bioactive molecules of interest in the production of biomedical activities. The biodiversity of the marine environment is a unique and wide source of bioactive molecules used as antifungal, antiviral and anticancer activities. The hexacoral Tubastraea coccinea also known as sun coral is an invasive species, abundantly present on the Brazilian coast. In the crude extract, alkaloids analogous to aplisinoplisin have already been identified, which are known to have pharmacological activities such as neuromodulators and anti-inflammatories in vitro and in vivo. The present study aims to evaluate the selective antitumor potential and neuromodulatory effect of T. coccinea crude extract and its isolated compounds in glioblastoma (GBM) cells, using in vitro and in vivo models. MATERIAL AND METHOD: As preliminary results, the crude extract was obtained by dynamic maceration process with 1:5 proportion biomass and methanol as solvent. After filtration, the solvent was evaporated at 50°C resulting the extract sample. The human GBM cell lines T98G and U251, and a human fibroblast BJ-5ta (IHF) were tested in 2D model and increasing concentrations of the T. coccinea extract for 72h. The cell viability was assessed by acid phosphatase activity in spectrophotometry. The cytostatic effect was observed by flow cytometry. RESULTS AND CONCLUSIONS: The T. coccinea extract showed a selective cytotoxic effect against T98G cells (IC50 432.8 µg / mL) and U251 cells (IC50 317.2 µg / mL) in 72h. In addition, a relevant higher reduction in the percentage of total U251 cells was observed compared to T98G cells response. Based on these previous results, the next steps of this study will be to observe, the antitumor and neuromodulatory activity of the unique isolated alkaloids present in T. coccinea extract, compared to the extract effect. We will use the 3D GBM and glia/neurons cultures to test these effects as well as the xenografted tumoral cells in an in vivo orthotopic model of zebrafish. We expect to suggest a future selective natural biopharmaceutical of marine origin for the neurooncology field.
Isabella Guimarães
Mariana Acquarone de Sá Lopes
Danielle da Silva Fraga Gomes
Mariana Acquarone de Sá Lopes
Danielle da Silva Fraga Gomes
Mariana Acquarone de Sá Lopes
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