杆菌可塞里通过抑制铁的利用来抑制Staphylococcus epidermidis的生长
Tomotaka Ohkubo1, Yasuhiko Matsumoto2, Hiroaki Sasaki3
1Department of Microbiology, Meiji Pharmaceutical University, 2-522-1 Noshio, Kiyose, Tokyo, 204-8588, Japan; Department of Analytical Biochemistry, Meiji Pharmaceutical University, 2-522-1, Noshio, Kiyose, Tokyo, 204-8588, Japan.
Biochemical and biophysical research communications
|November 29, 2023
概括
来自阿托皮性皮肤炎 (AD) 患者的Citrobacter koseri抑制了有益皮肤细菌S. epidermidis的生长. 这种抑制与C. koseri有关.
科学领域:
- 微生物学 微生物学
- 皮肤病学 皮肤病学
- 人类微生物组研究研究
背景情况:
- 人体皮肤微生物组对于皮肤健康至关重要,在像Staphylococcus epidermidis和Staphylococcus aureus这样的细菌之间保持平衡.
- 亚托邦性皮肤炎 (AD) 与S. aureus的大量增加有关,这种病原体会加剧炎症.
- 通常情况下,S. epidermidis会抑制S. aureus,但在AD患者中这种平衡会被破坏.
研究的目的:
- 调查从AD患者中分离出来的Citrobacter koseri在调节皮肤微生物群中的作用.
- 确定C. koseri影响S. epidermidis和S. aureus生长的机制.
主要方法:
- 从AD患者中分离出来的培养C. koseri.
- 分析C. koseri的热处理培养超 (CS) 对S. epidermidis和S. aureus生长的抑制作用.
- 通过铁补充剂和deferoxamine研究 siderophores 和铁在抑制活性中的作用.
主要成果:
- 热处理的C. koseri的CS抑制了S. epidermidis的生长,但没有抑制S. aureus的生长.
- C. koseri 拥有 siderophores 的基因集群,其 CS 显示出高的 siderophore 度.
- 通过铁的添加和铁化剂deferoxamine,C. koseri CS抑制了S. epidermidis的作用.
结论:
- 在阿托皮性皮肤炎的背景下,Citrobacter koseri抑制了有益的S. epidermidis的生长.
- 抑制机制涉及C. koseri干扰S. epidermidis的铁利用,可能是通过 siderophore 生产.
- 这一发现揭示了AD中复杂的微生物相互作用,并表明了潜在的治疗点.
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