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从温泉中分离出来的热友细菌产生的抗菌的净化和鉴定

Latifat Abdulsalam¹, Saheed Adewale Ganiyu², Amjad Bajes Khalil³

¹Department of Bioengineering, King Fahd University of Petroleum and Minerals (KFUPM), Dhahran, 31261, Saudi Arabia.

Probiotics and antimicrobial proteins

|September 26, 2025

概括

来自热性细菌的抗微生物为对抗耐药性感染提供了一种新的解决方案. 这些强效化合物即使在高温下也表现出显著的活性,为新的治疗和保存应用铺平了道路.

科学领域:

微生物学微生物学
生物化学生物化学
生物技术是生物技术.

背景情况:

细菌感染每年造成数百万人的死亡,耐药性增加了威胁.
传统的抗微生物药物正在失效,需要新的治疗策略.
抗微生物 (AMP) 是有前途的,但在生理条件下往往缺乏稳定性.

研究的目的:

从热友细菌中分离和描述耐热抗微生物 (AMP).
评估这些AMP的抗菌活性和热稳定性.
探索在医学,食品保存和农业中的潜在应用.

主要方法:

从热友细菌菌株 (Bacillus licheniformis,Geobacillus stearothermophilus,Brevibacillus borstelensis AK1,Anoxybacillus flavithermus AK1) 中提取和净化AMP.
使用UPLC,FTIR,NMR和质谱学进行表征.
对黄金葡萄球菌和大肠杆菌的抗微生物活性评估.
在高温下评估热稳定性.

主要成果:

纯化的AMP对S. aureus和E. coli表现出抗菌活性.
光谱分析证实了AMP的蛋白质性质和分子质量 (500-2000Da).
来自B. borstelensis AK1的AMP在暴露于70°C后保留了超过84%的抑制活性.
在分析中发现了B. borstelensis AK1和A. flavithermus AK1中的RiPPs和NRPs的基因集群.

结论:

来自沙特阿拉伯温泉的热友细菌是强大且耐热稳定的AMP的宝贵来源.
这些AMP显示出对抗耐药细菌治疗应用的巨大潜力.
这些发现支持在食品保存和农业中使用这些AMP,因为它们的热稳定性.

关键词:

抗微生物是一种抗微生物.抗微生物耐药性抗微生物耐药性生物活性化合物生物活性化合物温泉是一个温泉.热友细菌是一种热友细菌.

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