Fu, Guoqing and Dai, Juan and Zhang, Dayi and Zhu, Lishan and Tang, Xiao and Zhang, Ling and Zhou, Ting and Duan, Peng and Quan, Chao and Zhang, Zhibing and Song, Shizhen and Shi, Yuqin (2017) Di(2-ethylhexyl) phthalate induces apoptosis through mitochondrial pathway in GC-2spd cells. Environmental Toxicology, 32 (3). pp. 1055-1064. ISSN 1520-4081
2016_ET_DEHP_apoptosis_in_GC_2spd_cells.pdf - Accepted Version
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Abstract
Di(2-ethylhexyl) phthalate (DEHP), a plasticizer of synthetic polymers, is a well-known endocrine disrupting chemical (EDC) and reproductive toxicant. Addressing the unclear mechanism of DEHP-induced reproductive dysfunction, this study used GC-2spd cells to investigate the molecular mechanism involved in the DEHP-induced toxicity in the male reproductive system. The results indicated that the apoptotic cell death was significantly induced by DEHP exposure over 100 μM. Furthermore, DEHP treatment could induce oxidative stress in GC-2spd cells involving in the decrease of superoxide dismutase (SOD) activity (200 μM) and glutathione peroxidase (GSH-Px) activity (50 and 100 μM). In addition, DEHP induction also caused the elevated ratios of Bax/Bcl-2, release of cytochrome c and decomposition of procaspase-3 and procaspase-9 in GC-2spd cells. Taken together, our work provided the evidence that DEHP exposure might induce apoptosis of GC-2spd cells via mitochondria pathway mediated by oxidative stress. © 2016 Wiley Periodicals, Inc. Environ Toxicol, 2016.