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在S.I.S. 金色病毒的毒性因子降低了表皮屏障功能,增加了对病毒感染的易感性.

Mary C Moran1,2, Matthew G Brewer1, Patrick M Schlievert3

  • 1Department of Dermatology, University of Rochester Medical Center , Rochester, New York, USA.

Microbiology spectrum
|September 22, 2023
PubMed
概括
此摘要是机器生成的。

黄金葡萄球菌的毒性因子,如SEIQ,通过破坏皮肤屏障和损害角质细胞分化,增加皮肤细胞对病毒感染的易感性,从而导致阿托皮炎的感染. 这突出了SEIQQ.

关键词:
CD40 CD40 CD40 CD40 CD40 CD40 CD40 CD40 CD40 CD40 CD40 CD40在 SElQQ 中,你能找到自己.黄金葡萄球菌黄金葡萄球菌美国300 美国300亚托邦性皮肤炎的发生.屏障的功能是一个障碍.角质细胞 (keratinocytes) 是一种细胞.它们是超级抗原.疫苗病毒病毒病毒病毒病毒.病毒感染 病毒感染

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科学领域:

  • 皮肤病学 皮肤病学
  • 微生物学 微生物学
  • 免疫学 免疫学 免疫学

背景情况:

  • 患有亚形性皮肤炎 (AD) 的个人表现出高的 * 黄金葡萄球菌 * 的殖民率和对严重病毒感染的易感性增加.
  • 假设*S. aureus*分泌的毒性因子会损害角质细胞生物学,导致通过皮肤屏障破坏,分化受损和炎症增加病毒易感性.

研究的目的:

  • 调查S. aureus*毒性因子在改变角质细胞生物学和增加对病毒感染的易感性方面的作用.
  • 确定导致这些影响的特定毒性因素,并阐明潜在的机制,包括SEIQ和CD40.0的作用.

主要方法:

  • 人类角质细胞暴露于来自各种*S. aureus*菌株 (USA300,HG003,RN4220) 或纯化的毒性因子的条件介质中.
  • 评估了角质细胞对疫苗病毒感染,屏障功能和分化标志物 (qPCR) 的敏感性.
  • 利用CRISPR/Cas9来淘汰质细胞中的CD40,以评估其在SEIQ介导反应中的作用.

主要成果:

  • 暴露于USA300条件介质或纯化葡萄球菌类肠毒素样Q (SEIQ) 显著增加了角质细胞对疫苗病毒感染的敏感性.
  • SEIQ显著降低了皮肤屏障功能,并改变了角质细胞分化.
  • 对质细胞的CD40淘汰并没有取消SEIQ介导的炎症前型细胞因子表达或屏障功能受损.

结论:

  • 特定的 *S. aureus* 毒性因子,特别是SEIQ,增加了表皮细胞对病毒感染的易感性.
  • SEIQ有助于皮肤屏障功能受损和状细胞分化发生变化,这可能解释了在亚托皮炎中皮肤病毒感染的增加.
  • CD40对于SEIQ对角质细胞的影响并不重要,这表明其他受体调解其作用.