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PMAP-37:一种多用途的cathelicidin,用于中和细菌和病毒

Fatemeh Pashaie¹, Naomi Benne¹, Philippa I P Holzapfel²

¹Department of Infectious Diseases & Immunology, Division Virology, Faculty of Veterinary Medicine, Utrecht University, 3584 CL, Utrecht, the Netherlands.

Microbial pathogenesis

|April 14, 2025

概括

抗微生物PMAP-37有效向细菌和病毒,包括猪流行性腹病毒. 这种可以破坏细菌膜并调节免疫反应,显示了猪业的治疗潜力.

科学领域:

兽医医学兽医医学兽医医学
免疫学免疫学免疫学
微生物学微生物学

背景情况:

抗微生物 (AMP) 对于天生的免疫力至关重要,具有直接杀死病原体和免疫调节作用.
猪拥有11种cathelicidins,PMAP-37比其他变体更少被探索.
了解PMAP-37的广泛活性对于开发新型兽医疗药物至关重要.

研究的目的:

调查猪甲基素PMAP-37.7的抗菌和抗病毒功效.
阐明PMAP-37对细菌的活性及其与免疫细胞的相互作用背后的机制.
评估PMAP-37在猪业中作为治疗剂的潜力.

主要方法:

在体外抗微生物测试中确定了针对格拉姆阳性和格拉姆阴性细菌的最小杀菌度 (MBC).
细菌膜完整性被评估使用时间杀死试验和膜透性研究.
通过流细胞计和泽塔潜力测量分析了巨细胞的氧化生产,脂多糖 (LPS) 结合和泽塔潜力.
对猪流行性腹病毒 (PEDV) 的抗病毒活性进行了评估.

主要成果:

PMAP-37显示出强大的杀菌活性,可以对抗Bacillus globigii (2.5微米) 和大肠杆菌 (5微米).
该在5分钟内迅速透大肠杆菌膜,并中和了巨细胞中氧化的产生.
PMAP-37抑制了LPS与巨细胞的结合,并中和了细菌膜和LPS上的负电荷.
对猪流行性腹病毒 (PEDV) 观察到显著的抗病毒作用.

结论:

PMAP-37具有广泛的抗微生物和抗病毒特性,向关键的猪病原体.
它的机制包括直接破坏膜和调节先天免疫反应.
PMAP-37为兽医领域的治疗开发提供了一个有前途的候选人,特别是在猪产业中.

关键词:

具有抗菌活性,具有抗菌活性.抗病毒活性具有抗病毒活性.在Cathelicidin中使用.最后毒素 (Endotoxin) 是一种内毒素.这就是PMAP-37的目的.猪类抗微生物酸.

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