乙醇胺增强粘附,促进微分区的形成,并调节Levilactobacillus brevis的基因表达 ATCC 1486969 ATCC 14869
Polycronis P Akouris1,2, Gerrit A Stuivenberg2,3, John A Chmiel2,3
1Temerty Faculty of Medicine, University of Toronto, Toronto, ON, Canada.
Gut microbes
|May 8, 2024
概括
莱维拉克托巴塞勒斯布雷维斯ATCC 14869通过对乙醇胺的反应增强了肠道粘附,并排除了病原体. 这种开始性微生物通过与乙醇胺竞争,为抗击肠道感染提供了一种新的策略.
科学领域:
- 微生物学 微生物学
- 肠道微生物组研究研究
- 传染性疾病 传染性疾病
背景情况:
- 乙醇胺是肠道中致病细菌的关键营养素,有助于它们的殖民和毒性.
- 病原性细菌利用乙醇胺 (鱼基因) 来超越共生动物,并为毒性基因表达发出信号.
- 降低肠道乙醇胺水平是对抗肠道感染的潜在策略.
研究的目的:
- 调查Levilactobacillus brevis ATCC 14869在与使用乙醇胺的 (eut) 病原体竞争中的作用.
- 为了确定L. brevis是否可以调节肠道环境或宿主相互作用以回应乙醇胺.
- 探索L. brevis作为对肠道病原体进行益生菌干预的潜力.
主要方法:
- 基因组分析以确定L. brevisATCC 14869.9中的eut基因
- 对L. brevis的基因表达分析对乙醇胺的反应.
- 在体外测试测量L. brevis对肠道细胞的粘附和病原体排除.
主要成果:
- L. brevis ATCC 14869 拥有众多 eut 基因,但没有显著地代谢乙醇胺.
- 乙醇胺暴露可提高L. brevis中与微分区形成和肠粘附相关的基因的调节.
- L. brevis的预处理增强了肠道上皮细胞的粘附性,并显著减少了eut阳性病原体的粘附性.
结论:
- L. brevis ATCC 14869与肠道病原体竞争,不是通过代谢乙醇胺,而是通过增强自身的粘合力和排除病原体.
- 乙胺作为L. brevis的信号,改善宿主殖民因素并抑制病原体的粘附.
- L. brevis ATCC 14869作为一种新型治疗剂,有望预防或减轻肠道感染.
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