Nk-氨酸对细菌生长,MIC,抗菌素耐药性和病毒活动的影响
Haitham A Yacoub1, Maged Mostafa Mahmoud2,3, Ahmed M Al-Hejin4
1Cell Biology Department, Biotechnology Research Institute, National Research Centre, Cairo, Egypt.
Animal biotechnology
|December 15, 2023
概括
来自各种物种的天然杀手 (NK) -lysins具有强大的抗菌和抗病毒特性. 这些可以通过抑制β-lactamase基因表达来有效地抑制抗生素耐药细菌的生长.
科学领域:
- 微生物学 微生物学
- 免疫学 免疫学 免疫学
- 生物化学 生物化学
背景情况:
- 来自禽类,牛类和人类来源的天然杀手 (NK) -lysins具有已知的抗菌和抗病毒能力.
- 包括常见病原体在内的几种格拉姆阴性和格拉姆阳性细菌物种表现出对NK-lysin治疗的敏感性.
- 抗生素耐药性,特别是关于β-乳糖酶基因的抗生素耐药性,构成了全球重大健康挑战.
研究的目的:
- 研究,牛和人类NK-lysins的抗菌和抗病毒活性.
- 确定NK-lysin治疗对抗性细菌中β-乳酸酶基因表达的影响.
- 评估NK-lysins作为抗生素耐药性感染的新疗法潜力.
主要方法:
- 用不同的NK-lysin来治疗各种细菌菌株 (例如大肠杆菌,黄金色杆菌) 和罗塔病毒 (SA-11).
- 在治疗前和治疗后使用分子方法检测和分析β-乳糖酶基因 (TEM-1,CTX-M-1,CTX-M-8,CTX-M-9).
- 通过测量感染率百分比的抑制来量化抗病毒活性.
主要成果:
- NK-lysins对检测到的格兰阴性和格兰阳性细菌表现出广泛的抗菌活性.
- 用NK-氨酸治疗导致细菌中CTX-M-1,CTX-M-8和CTX-M-9β-乳糖酶基因完全缺失.
- 牛NK-lysin对罗塔病毒 (SA-11) 显示出强大的抗病毒活性,抑制感染率高达90%,而和人类NK-lysins则分别抑制了80%和50%.
结论:
- NK-lysin是一种有效的抗菌剂,能够抑制抗菌细菌中关键β-乳酸酶基因的表达.
- 牛NK-lysin对罗塔病毒表现出特别强大的抗病毒活性,这表明其具有特定物种的疗效.
- NK-氨酸代表了一种有前途的新型治疗方法,用于对抗抗生素耐 beta-lactam 的细菌感染.
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