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来自Streptococcus mutans的细胞外囊泡在口腔上皮质中促进简单疹病毒感染

Tae-Lyn Kim¹, Su Young Oh¹, Kah Young Lee¹

¹Department of Microbiology and Immunology, School of Dentistry, Kyungpook National University, Daegu, South Korea.

|December 11, 2025

概括

口腔细菌Streptococcus mutans通过细胞外囊泡,削弱抗病毒防御,促进简单疹病毒1 (HSV-1) 复制. 这表明了控制口腔病毒感染的新目标.

科学领域:

微生物学微生物学
病毒学病毒学
免疫学免疫学免疫学

背景情况:

口腔内有复杂的微生物群落,包括像Streptococcus mutans这样的细菌,这种细菌是牙的关键因素.
疹简单病毒1 (HSV-1) 是一种常见的口腔病毒病原体.
细菌细胞外囊泡 (EVs) 可以调解物种间的相互作用,并影响宿主反应.

研究的目的:

在口腔粘膜模型中调查Streptococcus mutans衍生的细胞外囊泡 (Sm EVs) 对HSV-1感染的影响.
探索Sm EVs影响宿主抗病毒反应的潜在机制.

主要方法:

实验使用人类口腔角质细胞 (HOK) 细胞和粘膜组织衍生器官进行.
干扰素 (IFN) 水平 (I,II和III型) 通过qPCR和蛋白质分析进行测量.
与Sm EV治疗相关的EGFR-ERK信号通路进行了研究.
分析了人类唾液样本,以查看S. mutans和HSV-1之间的相关性.

主要成果:

Sm EVs显著增强了粘膜器官中的HSV-1生产.
治疗Sm EVs导致I型,II型和III型干扰素水平显著降低.
通过调节EGFR-ERK通路,Sm EVs抑制了IFN的产生.
在人类唾液中观察到S. mutans和HSV-1之间的正相关性.

结论:

突变性链球菌通过其EVs可以抑制宿主的先天抗病毒免疫力,从而促进HSV-1复制.
这种机制突出了口腔细菌加剧病毒感染的新型相互作用.
这些发现表明,针对细菌EV或宿主信号通路的潜在治疗策略可以控制口腔病毒疾病.

关键词:

突变型链球菌 (Streptococcus mutans) 是一种突变型链球菌.皮肤上生长因子受体.细胞外囊泡中的细胞外囊泡.简单性疹病毒1型干扰子干扰子干扰子在口腔的粘膜.

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