Abstract
The persistent environmental pollutant 3-methylsulfonyl-DDE (3-MeSO2-DDE) undergoes bioactivation by cytochrome P450 11B1 (CYP11B1) in the adrenal cortex of several animal species in vivo and causes decreased glucocorticoid production and cell death in the zona fasciculata. This study presents extended investigations of the cytotoxic and endocrine disrupting effects of 3-MeSO2-DDE and some structurally related molecules in the mouse adrenocortical cell line Y-1. Both 3-MeSO2-DDE and, to a lesser extent, 3,3′(bis)-MeSO2-DDE decreased corticosterone production and produced CYP11B1-dependent cytotoxicity in Y-1 cells. Neither 2-MeSO2-DDE nor p,p′-DDE had any significant effect on either cell viability or corticosterone production, indicating that the presence and position of the methylsulfonyl moiety of 3-MeSO2-DDE is crucial for its biological activity. The adrenocortical toxicant o,p′-DDD decreased corticosterone production but was not cytotoxic in this cell line. None of the compounds altered Cyp11b1 gene expression, indicating that 3-MeSO2-DDE inhibits CYP11B1 activity on the protein level.
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Acknowledgments
We thank Hans Garmo, Ph.D., at Mathematical Statistics, Department of Mathematics, Uppsala University for helping with the statistical analysis of the cytotoxicity data. Economic support was given by the Foundation for Strategic Environmental Research (Mistra) through the NewS research program, and from the Swedish Animal Welfare Agency.
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Asp, V., Lindström, V., Olsson, J.A. et al. Cytotoxicity and decreased corticosterone production in adrenocortical Y-1 cells by 3-methylsulfonyl-DDE and structurally related molecules. Arch Toxicol 83, 389–396 (2009). https://doi.org/10.1007/s00204-008-0342-6
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DOI: https://doi.org/10.1007/s00204-008-0342-6