Effects of endocrine disrupting chemicals on in vitro global DNA methylation and adipocyte differentiation.
Toxicol In Vitro
; 27(6): 1634-43, 2013 Sep.
Article
en En
| MEDLINE
| ID: mdl-23603478
ABSTRACT
Recent studies suggest that endocrine disrupting chemicals (EDCs) may form a risk factor for obesity by altering energy metabolism through epigenetic gene regulation. The goal of this study is to investigate the effects of a range of EDCs with putative obesogenic properties on global DNA methylation and adipocyte differentiation in vitro. Murine N2A and human SK-N-AS neuroblastoma cells and murine preadipocyte fibroblasts (3T3-L1) were exposed to tributyltin (TBT), diethylstilbestrol (DES), bisphenol A (BPA), 2,3,7,8-tetrachlorodibenzo-[p]-dioxin (TCDD), 2,2',4,4',5,5'-hexachlorobiphenyl (PCB-153), hexachlorobenzene (HCB), hexabromocyclododecane (HBCD), 2,2',4,4'-tetrabrominated diphenyl ether (BDE-47) , perfluorinated octyl acid (PFOA) and perfluorinated octyl sulfonate (PFOS). A modest decrease in global DNA methylation was observed in N2A cells exposed to 10 µM DES, BPA, TCDD, BDE-47, PCB-153 and 1 µM HCB, but no changes were found in the human SK-N-AS cells. We reveal for the first time that BDE-47 increases adipocyte differentiation in a dose-dependent manner (2.5-25 µM). Adipocyte differentiation was also enhanced by TBT (≥ 10 nM) and BPA (>10 µM) and inhibited by TCDD (≥ 0.1 nM). The other chemicals showed either modest or no effects on adipocyte differentiation at the concentrations tested (PFOA, PFOS and HBCD at 10 µM; PCB-153, 3.4 µM and HCB, 1 µM). This study demonstrates that selected EDCs can induce functional changes in murine adipocyte differentiation in vitro which are accompanied by decreased global DNA methylation.
Palabras clave
2,2',4,4',5,5'-hexachlorobiphenyl; 2,2',4,4'-tetrabrominated diphenyl ether; 2,3,7,8-tetrachlorodibenzo-[p]-dioxin; Adipocyte differentiation; BDE-47; BPA; Bromodiphenylether; DES; EDCs; Endocrine disrupting chemicals; Epigenetics; HBCD; HCB; In vitro; Obesity; PCB-153; PFOA; PFOS; TBT; TCDD; Tributyltin; bisphenol A; diethylstilbestrol; endocrine disrupting chemicals; hexabromocyclododecane; hexachlorobenzene; perfluorinated octyl acid; perfluorinated octyl sulfonate; tributyltin
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Contexto en salud:
2_ODS3
Problema de salud:
2_quimicos_contaminacion
Asunto principal:
Adipocitos
/
Metilación de ADN
/
Disruptores Endocrinos
Tipo de estudio:
Risk_factors_studies
Límite:
Animals
/
Humans
Idioma:
En
Revista:
Toxicol In Vitro
Asunto de la revista:
TOXICOLOGIA
Año:
2013
Tipo del documento:
Article
País de afiliación:
Países Bajos