Evaluation of cytotoxic, genotoxic and antigenotoxic potential of Solanum lycocarpum fruits glicoalkaloid extract in V79 cells

Abstract

Solanum lycocarpum St.-Hil (Solanaceae) is a hairy shrub or small much-branched tree of the Brazilian Cerrado, popularly known as "fruit-of-wolf". Considering that the induction of chromosomal mutations is involved in the process of carcinogenesis, and that S. lycocarpum is often used in folk medicine, it becomes relevant to study its effect on genetic material. In this sense, the aim of present study was to determine the possible cytotoxic, genotoxic and antigenotoxic potentials of S. lycocarpum fruits glycoalkaloid extract (SL) in Chinese hamster lung fibroblasts (V79 cells). The cytotoxicity was evaluated by the colony forming assay, apoptosis and necrosis assay, Trypan blue exclusion dye method and mitotic index. Genotoxic and antigenotoxic potential were evaluated by comet and chromosomal aberrations assays. Four concentrations of SL (4, 8, 16 and 32 μg/mL) were used for the evaluation of its genotoxic potential. The DNA damage-inducing agent methyl methanesulfonate (MMS, 22 μg/mL) was utilized in combination with extract to evaluate a possible protective effect. The results showed that SL was cytotoxic at concentrations above 32 μg/mL by the colony forming assay. For apoptosis and necrosis assay, the concentration of 64 μg/mL of SL showed statistically significant increase in cell death by apoptosis and necrosis, while the concentrations of 128 and 256 μg/mL of SL demonstrated statistically significant increase in cell death by necrosis, compared with the control group. Analysis of cell viability by Trypan blue exclusion indicated >96% viability for treatments with concentrations up to 32 μg/mL of SL. No significant differences in MI were observed between cultures treated with different concentrations of SL (4, 8, 16 and 32 μg/mL) alone or in combination with MMS and the negative control, indicating that these treatments were not cytotoxic. The comet and chromosomal aberrations assays revealed that SL does not display genotoxic activity. Moreover, the different concentrations of SL showed protective effect against both genomic and chromosomal damages induced by MMS.

Potencial alelopático dos frutos maduros de Solanum lycocarpum A. St. Hil. (Solanaceae)

“…The fruits are usually consumed 'in natura' or used in jellies, jams, or pasta preparations (VIEIRA JR. et al, 2003). It is widely used in traditional medicine as a sedative, in the treatment of epilepsy, asthma, diabetes, obesity, reduction of cholesterol levels, and abdominal and renal pains (MUNARI et al, 2012). However, in our knowledge, there are few reports in the literature of biological activities of ripe fruits of S. lycocarpum.…”

Evaluation of cytotoxic, membrane, and DNA damaging effects of Thymus revolutus Célak essential oil on different cancer cells

“…Many constituents were already cytotoxic and mutagenic, and caused depleted levels of glutathione. They induced DNA damage in mammalian cells (45,46). Cellular responses of different lung cancer cells against potential antitumor and prooxidative effects of Thymus revolutus Célak essential oil and its two main constituents depended on the application of concentrations, incubation times, and cell properties such as drug resistance and EGFR expression capacity.…”

Antigenotoxic and Antioxidant Properties of <i>Solanum cernuum</i> and Its Alkaloid, Cernumidine

“…9) The bioactive compounds of S. cernuum (SC) can produce both desirable and undesirable effects. 10,11) Toxicity is dependent on factors such as cultivar, growth conditions, light, and type and concentration of the present compounds including guanidine alkaloids.…”