Sideritis perfoliata inhibits cell proliferation, induces apoptosis and exhibits cellular antioxidant activity in cervical cancer cells / Sideritis perfoliata inhibe la proliferación celular, induce apoptosis y exhibe actividad antioxidante celular en células de cáncer de cuello uterino

In this study, it was aimed to determine the antioxidant and anticancer activities of Sideritis perfoliata methanolic extract (SPE) on cervical cancer cells (HeLa). Different doses (25, 50,100 and 200 µg/mL) of SPE were used to determine proliferation of HeLa cells by 3-[4,5-dimethylthiazol-2-yl]-2,5-diphenyl-tetrazolium bromide (MTT) staining method. Induction of apoptosis was determined by Annexine-V and propidium iodide staining method. Interleukin (IL) 6-8 levels were measured by ELISA method. Antioxidant activities of SPE were determined by DPPH, DNA (plasmid pBR322) protecting and cellular antioxidant activity tests. Some phytochemicals of SPE were also screened by LC-MS-MS. It was determined that SPE reduced the proliferation of HeLa cells and also induced apoptosis. IL6-8 levels importantly decreased at 200 µg/mL. SPE exhibited moderately antioxidant activities in tests used. Among the phenolics identified, vanillic acid had the highest amount. As a result, it was determined to have the anticancer activity of SPE by decreasing cell proliferation, inducing apoptosis and decreasing IL6-8 in HeLa cells.

En este estudio, se tuvo como objetivo determinar las actividades antioxidantes y anticancerígenas del extracto metanólico de Sideritis perfoliata (SPE) en las células de cáncer de cuello uterino (HeLa). Se utilizaron diferentes dosis (25, 50, 100 y 200 µg/mL) de SPE para determinar la proliferación de células HeLa mediante el método de tinción con bromuro de 3-[4,5-dimetiltiazol-2-il] -2,5-difenil-tetrazolio (MTT). La inducción de apoptosis se determinó mediante el método de tinción con anexina-V y yoduro de propidio. Los niveles de interleucina (IL) 6-8 se midieron mediante el método ELISA. Las actividades antioxidantes de SPE se determinaron mediante pruebas de DPPH, protección de ADN (plásmido pBR322) y actividad antioxidante celular. Algunos fitoquímicos de SPE también se analizaron mediante LC-MS-MS. Se determinó que SPE redujo la proliferación de células HeLa y también indujo apoptosis. Los niveles de IL6-8 disminuyeron de manera importante a 200 µg/mL. SPE mostró actividades moderadamente antioxidantes en las pruebas utilizadas. Entre los fenólicos identificados, el ácido vainílico tuvo la mayor cantidad. Como resultado, se determinó que tenía la actividad anticancerígena de SPE al disminuir la proliferación celular, inducir apoptosis y disminuir la IL6-8 en las células HeLa.

Cell viability, anti-proliferation and antioxidant activities of Sideritis syriaca, Tanacetum argenteum sub sp. argenteum and Achillea aleppica subsp. zederbaueri on human breast cancer cell line (MCF-7).

The breast cancer is one of the most common types of cancer. Many scientists have focused on the treatment of this disease for a long time by studying anti-cancer activities of plant extracts as well as synthetics. Lamiaceae and Asteraceae have been used in anticancer studies due to their phytochemical content. The genus Sideritis, Achillea and Tanacetumare the members of these families. Sideritis, Achillea and Tanacetum are used as herbal medication for the treatment ofvariety of diseases. In present study, we demonstrated the biological activity of Sideritis syriaca (SS), Achillea aleppica (AAZ) and Tanacetum argenteum (TAA) methanol extracts on cell viability of the breast cancer line MCF7. MTT (3- (4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide) assay was used to determine the cell viability and proliferation of MCF7 cells. In a dose dependent manner, methanol extracts (0, 1, 5, 25, 100 and 250 μg/ml) of SS, AZZ and TAA were examined on MCF7, and viability of cells were determined with MTT staining. Especially, concentrations in 100 and 250 μg/ml of extracts decreased the cell viability (p<0.001). The results of the current study showed that methanol extracts of SS, AZZ and TAA effectively inhibited the cell proliferation by decreasing the cell viability of MCF7 cells. Suggesting that SS, AZZ and TAA can be considered as natural herbal-based anti-cancerous agents.

Chemical Composition, Antioxidant Activities and Protective Effects of Sideritis italica Extract on C2C12 Oxidative Stress.

Aims: Sideritis italica is a medicinal plant used for medical purposes mainly based on experiences rather than scientific evidence. Biological properties, composition of primary and secondary metabolites as well as the antioxidant capacity were investigated on samples from wild plant. Methodology: The ultrastructure of aerial parts and quantitative distribution of pigments, including chlorophylls and amino acids, as well as the main class of secondary metabolites (phenols, flavonoids, flavonols and proanthocyanidins) were investigated. The extracts were tested by radical scavenging assays (DPPH, ABTS) and pharmacological assays (antiproliferative activity, effects on ROS production and protective effects against DNA damage induced by hydrogen peroxide) for their effects on C2C12 cell line. Results: Scanning electron microphotography confirms the presence of pharmacognostic characteristics, such as glandular and non-glandular trichomes on aerial parts. The chemical analysis indicates that the leaves are the most important part of the plant, and ethanol/water 70/30 is the preferable extraction solvent. The highest concentration of all metabolites was found in 70% ethanol extract of leaves. The antiradical assays and the in vitro tests on mouse myoblast cells C2C12 confirm the biological activities of the extract. C2C12 culture medium supplemented with extract, at doses (5-200μg/ml) not interfering with cell viability, was seen to modulate the ROS production and balance the increased oxidative stress induced by hydrogen peroxide. The treatment of C2C12 cells with 200 μg/ml of extract results in a percentage reduction of ROS of -60% and -71%, compared to untreated and H2O2 treated groups, respectively, P<.05. The quantitative reduction of 8- hydroxy-2’-deoxyguanosine (8-OH-dG), which is a biomarker of free radical DNA damage, confirms the protective effect of S. italica extract on oxidative stress at basal condition as well as in presence of exogenous stimuli (-11 and -7%, at 20μg/ml, respectively versus untreated and H2O2 groups, P<.05). Conclusion: The results obtained in the present study support the rational base for the medicinal use of plant and extracts in modulating the free radical metabolism and balancing the oxidative stress.