在 Echinococcus multilocularis 中的主体蛋白质 Metacestodes
Joachim Müller1, Beatrice Zumkehr1, Manfred Heller2
1Institute of Parasitology, Department of Infectious Diseases and Pathobiology, Vetsuisse Faculty, University of Bern, 3001 Bern, Switzerland.
International journal of molecular sciences
|April 17, 2025
概括
Echinococcus multilocularis metacestodes,导致气泡状球菌,可以选择性地吸收宿主蛋白质. 它们的吸收在体外和体外模型之间有所不同,这表明寄生虫控制着营养的获取.
科学领域:
- 寄生虫学的寄生虫学
- 分子生物学分子生物学
- 宿主-病原体相互作用
背景情况:
- 气泡状球结肠杆菌是一种严重的动物性疾病,由 Echinococcus multilocularis metacestodes 引起.
- 了解宿主-寄生虫相互作用,特别是营养吸收,对于研究疾病机制至关重要.
- 一个采用来自老鼠肝瘤细胞的条件介质的体外模型存在,用于研究甲基细胞.
研究的目的:
- 为了研究 Echinococcus multilocularis metacestodes 通过宿主衍生的蛋白质的吸收.
- 确定哪些宿主蛋白质被寄生虫吸收,以及它们的丰度在体内和体外如何不同.
- 探索宿主蛋白质吸收的潜在机制和功能.
主要方法:
- 基于液体染色学-并联质谱学 (LC-MS/MS) 的蛋白质组学被用于分析培养介质中的宿主蛋白质和metacestode囊泡组织/流体.
- 宿主蛋白质形状的 in vitro (条件介质) 与 ex vivo (感染小鼠的膀液) 的比较.
主要成果:
- 在培养基中的1170种宿主蛋白中,只有225种在metacestode囊泡组织或液体中检测到.
- 主体蛋白质的相对丰度有显著差异;血清白蛋白在介质中丰富,但在囊泡液中不是最丰富的.
- 在囊泡液中,α-2-HS-糖蛋白最为丰富,而在感染小鼠的ex vivo囊泡液中,基因组异型占主导地位.
结论:
- Echinococcus multilocularis metacestodes表现出对宿主蛋白质的选择性吸收,而不仅仅是基于大小或电荷.
- 寄生虫积极调节它内部化的宿主蛋白质的光谱,根据环境进行调整 (体外与体外).
- 这些发现表明,一种复杂的机制可以保持恒定的内部环境,并从宿主中获得必需的营养.
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