合理设计一种多价能阿普坦体,通过破坏代谢物阿普拉托克辛B-8,9-环氧化物形成来减轻阿普拉托克辛B的毒性
Yuting Chang1, Tingting Su1, Mengxia Duan1
1State Key Laboratory of Food Science and Resources, Jiangnan University, Wuxi 214122, China; School of Food Science and Technology, Jiangnan University, Wuxi 214122, China.
一种新型的多价阿巴 (PA) 有效地中和了有害的食物污染物阿弗拉托克辛B1 (AFB1). 这种胺酶通过阻断其代谢激活来降低AFB1的毒性,提供了一种新的排毒策略.
科学领域:
- 食品科学 食品科学 食品科学
- 毒理学 毒理学 毒理学
- 生物技术是生物技术.
背景情况:
- 非洲毒素B1 (AFB1) 是一种有毒和致癌的真菌毒素,对食品安全和人类健康构成风险.
- 清除AFB1的毒素对于减轻其不良健康影响至关重要.
研究的目的:
- 为有效中和AFB1.1,设计一个多价的阿巴体 (PA).
- 研究PA对AFB1中和的机制.
- 评估PA在缓解AFB1毒性的有效性.
主要方法:
- 分子对接分析,以预测阿普坦-AFB1相互作用.
- 使用滚动圆放大 (RCA) 构建PA.
- 在体外和体内研究,以评估AFB1毒性缓解.
主要成果:
- 分子对接显示PA覆盖关键的AFB1毒性部位,抑制CYP450.0的代谢激活.
- PA 呈现出更好的亲和力 (2.74 μM) 和稳定性 (Tm = 60.59 °C).
- 在细胞和动物模型中,PA显著降低了AFB1诱导的细胞毒性,氧化应激和肝损伤.
结论:
- PA是AFB1排毒的一个有前途的策略.
- 开发的PA在AFB1毒性方面提供了较强的保护,而不是单价胺.
- 这种方法可能适用于其他新出现的毒素.
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