Potential Toxicity and Mechanisms of T-2 and HT-2 Individually or in Combination on the Intestinal Barrier Function of Porcine Small Intestinal Epithelial Cells
文献类型： 外文期刊
作者： He, Weihua 1 ; Wang, Jianhua 2 ; Han, Mengyi 2 ; Wang, Lihua 1 ; Li, Ling 1 ; Zhang, Jiahui 1 ; Chen, Siqi 1 ; Guo, Jiayi 1 ; Zhai, Xiaohu 1 ; Yang, Junhua 2 ;
作者机构： 1.Jiangsu Agr Husb Vocat Coll, Inst Pet Sci & Technol, Taizhou 225300, Peoples R China
2.Shanghai Acad Agr Sci, Inst Agrifood Stand & Testing Technol, Shanghai 201403, Peoples R China
关键词： T-2 toxin; HT-2 toxin; porcine intestinal epithelial cells; inflammation; intestinal barrier
期刊名称：TOXINS （ 影响因子：4.2； 五年影响因子：4.7 ）
ISSN：
年卷期： 2023 年 15 卷 12 期
页码：
收录情况： SCI
摘要： Under natural conditions, T-2 toxin can be easily metabolized to HT-2 toxin by deacetylation, and T-2 and HT-2 are usually co-contaminated in grain and feed at a high detected rate. Our previous information indicated that T-2 toxin could injure the function of the intestinal barrier, but the combined toxicity and mechanism of T-2 and HT-2 on the intestinal cells of porcines are still unknown. Therefore, we aimed to explore T-2 and HT-2 individually and combined on cellular viability, cell membrane integrity, the expression of tight junction-related proteins, and the generation of inflammatory factors in porcine intestinal epithelial cells (IPEC-J2). The results showed that T-2 and HT-2, individually or in combination, could induce a decrease in cell viability, an increase in LDH release and IL-1, IL-6, and TNF-alpha generation, and a decrease in the anti-inflammatory factor IL-10. Based on the analysis of immunofluorescence staining, real-time PCR, and western blotting, the tight junction protein expressions of Claudin-1, Occludin, and ZO-1 were significantly decreased in the T-2 and HT-2 individual or combination treated groups compared with the control. Furthermore, all the parameter changes in the T-2 + HT-2 combination group were much more serious than those in the individual dose groups. These results suggest that T-2 and HT-2, individually and in combination, could induce an intestinal function injury related to an inflammatory response and damage to the intestinal barrier function in porcine intestinal epithelial cells. Additionally, T-2 and HT-2 in combination showed a synergistic toxic effect, which will provide a theoretical basis to assess the risk of T-2 + HT-2 co-contamination in porcine feed.
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