Biotransformation of the Mycotoxin Zearalenone to its Metabolites Hydrolyzed Zearalenone (HZEN) and Decarboxylated Hydrolyzed Zearalenone (DHZEN) Diminishes its Estrogenicity In Vitro and In Vivo
作者:Sebastian Fruhauf、Barbara Novak、Veronika Nagl、Matthias Hackl、Doris Hartinger、Valentina Rainer、Silvia Labudová、Gerhard Adam、Markus Aleschko、Wulf-Dieter Moll、Michaela Thamhesl、Bertrand Grenier
DOI:10.3390/toxins11080481
日期:——
Zearalenone (ZEN)-degrading enzymes are a promising strategy to counteract the negative effects of this mycotoxin in livestock. The reaction products of such enzymes need to be thoroughly characterized before technological application as a feed additive can be envisaged. Here, we evaluated the estrogenic activity of the metabolites hydrolyzed zearalenone (HZEN) and decarboxylated hydrolyzed zearalenone
玉米赤霉烯酮(ZEN)降解酶是一种有前景的策略,可以抵消这种霉菌毒素对家畜的负面影响。在可以设想作为饲料添加剂的技术应用之前,需要彻底表征此类酶的反应产物。在这里,我们评估了由玉米赤霉烯酮-内酰胺酶Zhd101p水解ZEN形成的代谢产物水解玉米赤霉烯酮(HZEN)和脱羧水解玉米赤霉烯酮(DHZEN)的雌激素活性。ZEN,HZEN和DHZEN在两个体外模型中进行了测试:MCF-7细胞增殖测定(0.01-500 nM)和雌激素敏感性酵母生物测定(1-10,000 nM)。此外,我们比较了饮食中ZEN的影响(4。58 mg / kg)和等摩尔日粮浓度的HZEN和DHZEN对雌性仔猪的生殖道形态以及子宫mRNA和microRNA表达的影响(n = 6,暴露4周)。尽管ZEN增加了细胞增殖和报告基因的转录,但HZEN和DHZEN均未引发雌激素反应,这表明这些代谢产物的体外雌激素水平至少比ZEN低50-10