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标有3D-Raman同位素的共聚焦成像和原子力显微镜研究了与真菌Candida albicansans相互作用的上皮细胞
Sarmiza Elena Stanca1, Selene Mogavero2, Wolfgang Fritzsche1
1Leibniz Institute of Photonic Technology, Albert-Einstein-Straße 9, 07745 Jena, Germany.
Nanomedicine : nanotechnology, biology, and medicine
|May 11, 2024
概括
菌毒素candidalysin通过向血膜并进入细胞质中,损害上皮细胞. 化候选素显示独特的拉曼信号,有助于跟踪其在Candida albicans感染期间的细胞相互作用.
科学领域:
- 微生物学 微生物学
- 细胞生物学 细胞生物学
- 生物物理学的生物物理.
背景情况:
- * *Candida albicans*是一种致病性人类真菌,会引起表面感染.
- *上皮细胞损伤是这些感染的关键特征.
- * 分泌的毒素candyalysin与这种损伤有关.
研究的目的:
- * 为了研究C. albicans与上皮细胞的相互作用.
- * 为了阐明候选素在上皮细胞损伤中的作用.
- * 通过光谱成像,在受感染的上皮细胞内识别候选素.
主要方法:
- * 三维-序列-同焦拉曼光谱成像.
- * 原子力显微镜 (AFM).
- *对*C. albicans*野生类型,候选素缺乏突变物和纯化候选素的研究.
主要成果:
- * 化候选素表现出明显的拉曼信号 (C-D曲在2100-2200厘米-1,N-D曲在477厘米-1) 定位在核附近.
- * AFM 揭示了 100 nm 深的上皮细胞病变,并在暴露于 candidalysin 后增加了毛孔周围的附着性.
- * 在感染期间,在上皮细胞的细胞质中检测到甘地素.
结论:
- * kandidatalysin 是直接负责上皮细胞损伤的.
- * kandidatalysin 准了等离子体膜,并被内化到宿主细胞细胞质中.
- *拉曼光谱提供了一种方法来追踪宿主细胞内的候选酶.
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