Environmental and Molecular Mutagenesis 2011-08-01

Fenthion and terbufos induce DNA damage, the expression of tumor-related genes, and apoptosis in HEPG2 cells.

Jong-C Wu, You-Cheng Hseu, Jui-Shan Tsai, Lei-Chin Chen, Soi M Chye, Chin-H Chen, Ssu Ching Chen

Index: Environ. Mol. Mutagen. 52(7) , 529-37, (2011)

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Abstract

This study investigates the effects of fenthion and terbufos, two organophosphorous pesticides, on DNA damage, tumor-related gene expression, and apoptosis in HepG2 cells. We found that exposure to concentrations ranging from 50 to 200 μM of fenthion and terbufos for 2 hr caused significant death in HepG2 cells. Both compounds induced DNA damage in a concentration-dependent manner as measured using the alkaline comet assay. Tumor-related genes (jun, myc, and fos) and apoptosis-related genes (socs3, tnfaip3, ppp1r15a, and nr4a1) were up-regulated by both compounds. Finally, both compounds induced apoptosis. The results demonstrate that both terbufos and fenthion induce DNA damage and should be considered potentially hazardous to humans.Copyright © 2011 Wiley-Liss, Inc.