通过GAT-MD集成,合理选抗大肠杆菌,利用食品传播抗微生物序列特征
Qiqi Wang1, Qiang Ma1, Shiqi Chen1
1Department of Veterinary Pharmacology and Toxicology, State Key Laboratory of Veterinary Public Health and Safety, College of Veterinary Medicine, China Agricultural University, Beijing 100193, China.
Food chemistry
|November 11, 2025
概括
研究人员开发了一种计算方法来发现新型抗微生物 (AMP). 这种方法确定了AMP_321,它是一种有效的天然防腐剂,可以对抗大肠杆菌和黄金杆菌等细菌.
科学领域:
- 生物化学 生物化学
- 计算生物学 计算生物学
- 食品科学 食品科学 食品科学
背景情况:
- 抗微生物 (AMP) 显示出作为常规抗生素替代品的潜力.
- 对AMP的实验查是资源密集型和耗时的.
- 开发有效的AMP发现方法对于打击抗菌素耐药性至关重要.
研究的目的:
- 开发和验证一个结合的计算选策略,以快速识别新的AMP.
- 从一个大型的食品衍生的基数据库中发现和描述一个新的AMP.
- 评估已识别的AMP作为天然食品防腐剂的有效性和安全性.
主要方法:
- 利用图表注意网络 (GAN) 和分子动力学 (MD) 模拟用于选.
- 对100,663,296个基的数据库进行了选,以防大肠杆菌和抗甲素耐药的金黄色葡萄球菌.
- 进行实验验证,稳定性测试,溶血活性测试和机械研究.
主要成果:
- 确定了一种新的AMP,被指定为AMP_321,具有广泛的抗菌活性.
- AMP_321表现出高稳定性和低血溶性活性,表明安全性.
- 机制研究显示AMP_321破坏细菌膜,诱导ATP释放,并增加活性氧物种.
- AMP_321有效降低了食品模型 (牛肉,西红) 中的细菌污染.
结论:
- 结合GAN和MD模拟方法是AMP发现的有效策略.
- AMP_321是一种有前途的天然抗菌剂,在食品防腐中具有潜在的应用.
- AMP_321的机制涉及细菌的膜破坏和氧化应激诱导.
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