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Venom of the Phoneutria nigriventer spider alters the cell cycle, viability, and migration of cancer cells
Author(s) -
Barreto dos Santos Natália,
Bonfanti Amanda Pires,
RochaeSilva Thomaz Augusto Alves da,
da Silva Pedro Ismael,
da CruzHöfling Maria Alice,
Verinaud Liana,
Rapôso Catarina
Publication year - 2019
Publication title -
journal of cellular physiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.529
H-Index - 174
eISSN - 1097-4652
pISSN - 0021-9541
DOI - 10.1002/jcp.26935
Subject(s) - viability assay , propidium iodide , hela , biology , apoptosis , cancer cell , cell cycle , cytotoxic t cell , cell migration , venom , cell , cell growth , annexin , cell culture , programmed cell death , cell cycle checkpoint , microbiology and biotechnology , cancer , biochemistry , in vitro , genetics
The mechanisms of cancer involve changes in multiple biological pathways. Multitarget molecules, which are components of animal venoms, are therefore a potential strategy for treating tumors. The objective of this study was to screen the effects of Phoneutria nigriventer spider venom (PnV) on tumor cell lines. Cultured human glioma (NG97), glioblastoma (U‐251) and cervix adenocarcinoma (HeLa) cells, and nontumor mouse fibroblasts (L929) were treated with low (14 µg/ml) and high (280 µg/ml) concentrations of PnV, and analyzed through assays for cell viability (thiazolyl blue tetrazolium blue), proliferation (carboxyfluorescein succinimidyl ester), death (annexin V/propidium iodide [Pi]), the cell cycle (Pi), and migration (wound healing and transwell assay). The venom decreased the viability of U‐251 cells, primarily by inducing cell death, and reduced the viability of NG97 cells, primarily by inhibiting the cell cycle. The migration of all the tumor cell lines was delayed when treated with venom. The venom significantly affected all the tumor cell lines studied, with no cytotoxic effect on normal cells (L929), although the nonglial tumor cell (HeLa) was less sensitive to PnV. The results of the current study suggest that PnV may be composed of peptides that are highly specific for the multiple targets involved in the hallmarks of cancer. Experiments are underway to identify these molecules.