Deoxynivalenol and zearalenone: Different mycotoxins with different toxic effects in donkey (Equus asinus) endometrial epithelial cells

• Published in: Theriogenology 2022-02, Vol.179, p.162-176
• Main Authors: Song, Jun-Lin, Sun, Yu-Jiang, Liu, Gui-Qin, Zhang, Guo-Liang
• Format: Article
• Language: English
• Subjects: Animals; DON; Donkey; EECs; Epithelial Cells; Equidae; Mycotoxins; Pyroptosis; RNA-seq; Trichothecenes; ZEA; Zearalenone - toxicity
• ISSN: 0093-691X; 1879-3231
• DOI: 10.1016/j.theriogenology.2021.11.021

Deoxynivalenol (DON) and zearalenone (ZEA), which are commonly found in feed products, exhibit serious negative effects on the reproductive systems of domestic animals. However, the toxicity of mycotoxins on the uterine function of donkey (Equus asinus) remains unclear. This study investigated the biological effects of DON and ZEA exposure on donkey endometrial epithelial cells (EECs). It was administered 10 μM and 30 μM DON and ZEA to cells cultured in vitro. The results showed that 10 μM DON exposure markedly changed the expression levels of pyroptosis-associated genes and that 30 μM ZEA exposure changed the expression levels of inflammation-associated genes in EECs. The mRNA expression of cancer-promoting genes was markedly upregulated in cells exposed to DON and 30 μM ZEA; in particular, 10 μM and 30 μM DON and ZEA markedly disturbed the expression of androgen and estrogen secretion-related genes. Furthermore, Q-PCR, Western blot, and immunofluorescence analyses verified the different expression patterns of related genes in DON- and ZEA-exposed EECs. Collectively, these results illustrated the impact of exposure to different toxins and concrete toxicity on the mRNA expression of EECs from donkey in vitro. •DON and ZEA exhibit negative impact on donkey EECs.•DON may have stronger toxicity than ZEA in the EECs.•Different gene expression patterns exist in EECs exposed to DON and ZEA.