title: Study of the cytotoxic activity of Styrax camporum extract and its chemical markers, egonol and homoegonol.
abstract: The benzofuran lignans egonol and homoegonol are found in all species of the genus Styrax. Since natural products are important sources of new anticancer drugs, this study evaluated the cytotoxic activity of a hydroalcoholic extract of the stems of S. camporum (SCHE) and their chemical markers, egonol (EG) and homoegonol (HE), against different tumor cell lines (B16F10, MCF-7, HeLa, HepG2, and MO59J). A normal human cell line (GM07492A) was included. Cytotoxic activity was evaluated at different treatment times (24, 48 and 72 h) using the XTT assay. More effective results were observed after 72 h of treatment. The lowest IC50 values were found for the HepG2 cell line, ranging from 11.2 to 55.0 µg/mL. The combination of EG and HE exerted higher cytotoxic activity than SCHE or treatment with either lignan alone, with the lowest IC50 (13.31 µg/mL) being observed for the MCF-7 line. Furthermore, treatment with these lignans was significantly more cytotoxic for some tumor cell lines compared to the normal cell line, GM07492A, indicating selectivity. These results suggest that these lignans may be used to treat cancer without affecting normal cells.
authors: Universidade de Franca, Avenida Dr. Armando Salles de Oliveira, 201 - Parque Universitário, Franca, São Paulo, 14404-600, Brazil. pollyfoliveira@gmail.com.
authors: Pollyanna Francielli
authors: PF
authors: de Oliveira
authors: Universidade de Franca, Avenida Dr. Armando Salles de Oliveira, 201 - Parque Universitário, Franca, São Paulo, 14404-600, Brazil.
authors: Jaqueline Lopes
authors: JL
authors: Damasceno
authors: Universidade de Franca, Avenida Dr. Armando Salles de Oliveira, 201 - Parque Universitário, Franca, São Paulo, 14404-600, Brazil.
authors: Camila Spereta
authors: CS
authors: Bertanha
authors: Universidade de Franca, Avenida Dr. Armando Salles de Oliveira, 201 - Parque Universitário, Franca, São Paulo, 14404-600, Brazil.
authors: Alba Regina Barbosa
authors: AR
authors: Araújo
authors: Universidade de Franca, Avenida Dr. Armando Salles de Oliveira, 201 - Parque Universitário, Franca, São Paulo, 14404-600, Brazil.
authors: Patrícia Mendonça
authors: PM
authors: Pauletti
authors: Universidade de Franca, Avenida Dr. Armando Salles de Oliveira, 201 - Parque Universitário, Franca, São Paulo, 14404-600, Brazil.
authors: Denise Crispim
authors: DC
authors: Tavares
keywords: Cancer cells; Cytotoxicity; Egonol; Homoegonol; Selectivity; Styrax camporum Pohl