Protein Synthesis Inhibition and Oxidative Stress Induced by Cylindrospermopsin Elicit Apoptosis in Primary Rat Hepatocytes
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ID: 267828
2013
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Abstract
The increasing presence of cyanotoxin producers in several regions of the world is hazardous for humans and animals. Cylindrospermopsin (CYN) is nowadays recognized as a widely distributed freshwater cyanobacterial toxin. This toxin has been shown to induce protein synthesis inhibition as well as inhibition of glutathione synthesis. Given that the liver seems to be the main target of cylindrospermopsin, in this work we used cultures of primary rat hepatocytes to study the type of cell death induced by CYN nanomolar concentrations. The involvement of reactive oxygen species in toxin induced cell death, the relationship between protein synthesis inhibition and toxicity, and the cell endogenous antioxidant response regulation were studied. We show that cylindrospermopsin induces apoptosis in primary rat hepatocytes. At the concentrations used in this work, protein synthesis inhibition and oxidative stress were involved in the cytotoxic effect elicited by the toxin. Finally, activation of the cell antioxidant response was observed at the transcriptional and translational levels.
| Reference Key |
botana2013chemicalprotein
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| Authors | Henar López-Alonso,Juan Andrés Rubiolo,Félix Vega,Mercedes Rodriguez Vieytes,Luis M Botana;Henar López-Alonso;Juan Andrés Rubiolo;Félix Vega;Mercedes Rodriguez Vieytes;Luis M Botana; |
| Journal | Chemical research in toxicology |
| Year | 2013 |
| DOI |
10.1021/tx3003438
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