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Título: Sub-lethal doses of polybrominated diphenyl ethers affect some biomarkers involved in energy balance and cell cycle, via oxidative stress in the marine fish cell line SAF-1
Fecha de publicación: 19-feb-2019
Editorial: Elsevier
Cita bibliográfica: Aquatic Toxicology, 2019. 210:1-10
ISSN: 0166-445X
Materias relacionadas: CDU::5 - Ciencias puras y naturales::57 - Biología
Palabras clave: PBDEs,
oxidative stress
energetic balance,
cell cycle
Sparus aurata fibroblast
Resumen: Polybrominated diphenyl ethers (PBDEs) are a class of persistent contaminants which are found all over the world in the marine environment. Sparus aurata fibroblast cell line (SAF-1) was exposed to increasing concentrations of PBDEs 47 and 99, until 72 hours to evaluate the cytotoxicity, reactive oxygen species (ROS) production and the expression of some selected molecular markers related to cell cycle, cell signaling, energetic balance and oxidative stress (p53, erk-1, hif-1α and nrf-2), by real-time PCR. Furthermore, SAF-1 cells were exposed for 7 and 15 days to sub-lethal concentrations, in order to evaluate the response of some biomarkers by immunoblotting (p53,ERK-1, AMPK, HIF-1α and NRF-2). After 48 and 72 hours, the cells showed a significant decrease of cell vitality as well as an increase of intracellular ROS production. Gene expression analysis showed that sub-lethal concentrations of BDE-99 and 47, after 72 hours, up-regulated cell cycle and oxidative stress biomarkers, although exposure to 100μmol L-1 down-regulated the selected markers related to cell cycle, cell signaling, energetic balance. After 7 and 15 days of sub-lethal doses exposure, all the analyzed markers resulted affected by the contaminants. Our results suggest that PBDEs influence the cells homeostasis first of all via oxidative stress, reducing the cell response and defense capacity and affecting its energetic levels. This situation of stress and energy imbalance could represents a condition that, modifying some of the analyzed biochemical pathways, would predispose to cellular transformation.
Autor/es principal/es: Espinosa Ruiz, Cristobal
Manuguerra, Simona
Cuesta, Alberto
Esteban, Maria Angeles
Santulli, Andrea
Messina, Concetta M.
Facultad/Departamentos/Servicios: Departamento de Biologia Celular e Histología
URI: http://hdl.handle.net/10201/103051
DOI: doi.org/10.1016/j.aquatox.2019.02.014
Tipo de documento: info:eu-repo/semantics/article
Número páginas / Extensión: 43
Derechos: info:eu-repo/semantics/openAccess
Atribución-NoComercial-SinDerivadas 3.0 España
Aparece en las colecciones:Artículos: Biología Celular e Histología

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