改造的S. cerevisiae-pYD1-ScFv-AFB1通过生物结合和肠道微环境修复减轻了阿弗拉托xin B1 的毒性
Hong Huang1, Ziyan Li1, Zhanghua Qi2
1School of Resource and Environment, Nanchang University, Nanchang, 330031, China.
概括
工程酵母 (SC-AF) 有效地结合和中和有毒的亚弗拉托克辛B1 (AFB1). 这种新的益生菌方法可以减轻AFB1诱导的小鼠肝脏损伤和肠道损伤.
科学领域:
- 生物技术是生物技术.
- 毒理学 毒理学 毒理学
- 胃肠病学 胃肠病学
背景情况:
- 甲素B1 (AFB1) 是一种强烈的毒素,也是肝癌的主要风险因素.
- 有效的干预措施来抵消AFB1暴露是有限的.
- 开发新的策略来减轻AFB1毒性至关重要.
研究的目的:
- 为了设计一种Saccharomyces cerevisiae菌株 (S.C-AF),显示AFB1特异性抗体片段,用于AFB1排毒.
- 在小鼠模型中评估SC-AF在改善AFB1诱导的肝损伤和相关病理方面的疗效.
主要方法:
- 通过细胞表面显示显示一个AFB1结合的单链变量片段 (ScFv-AFB1).
- 建立了一个C57BL/6小鼠模型,具有AFB1诱导的肝损伤.
- 通过胃输液给药S.C-AF或控制S.C,持续4周.
- 评估肝损伤,炎症,氧化应激,亡和肠道屏障功能.
主要成果:
- 优化的SC-AF在体外显示出与原生S. cerevisiae.相比,AFB1结合能力高出1.7倍.
- S.C-AF治疗显著缓解了AFB1诱导的肝损伤.
- S.C-AF 降低了促炎性细胞因子分泌和亡性蛋白质表达.
- 通过Nrf2激活,SC-AF增强了抗氧化能力.
- S.C-AF逆转了AFB1诱导的肠紧结蛋白缺乏和失生症,改善了肠道屏障功能.
结论:
- 工程化S. cerevisiae (S.C-AF) 有效地结合和中和AFB1.
- 在缓解AF1诱导的肝损伤和肠损伤方面,SC-AF显示出显著的治疗潜力.
- S.C-AF代表了一种有前途的新型益生菌干预药物,用于治疗青素毒性.
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