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Updated: Sep 19, 2025

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特里帕诺索马克鲁兹G和Y菌株的元循环特里波马斯蒂哥特释放细胞外囊泡,并触发宿主细胞通信

Paula Meneghetti¹, Ewa Kozela², Daniel Alfandari²

¹Laboratório de Imunologia Celular e Bioquímica de Fungos e Protozoários, Departamento de Ciências Farmacêuticas, Instituto de Ciências Ambientais, Químicas e Farmacêuticas, Universidade Federal de São Paulo (UNIFESP), São Paulo, São Paulo, Brazil.

Cell biology international

|June 2, 2025

概括

来自Trypanosoma cruzi菌株的细胞外囊泡 (EV) 显示出不同的蛋白质组成,影响宿主免疫反应并增加寄生虫入侵. 这些发现将EV分泌与不同的感染模式联系起来.

科学领域:

寄生虫学的寄生虫学
细胞生物学细胞生物学
免疫学免疫学免疫学

背景情况:

克鲁兹虫 (T. cruzi) 释放细胞外囊泡 (EVs) 进行宿主通信.
不同的T. cruzi菌株在EV成分上表现出差异.
传染性阶段的元循环三胞体 (MT) 的 EVs 是不充分研究的.

研究的目的:

描述和比较两种T. cruzi菌株 (G和Y) 的MT的EV,它们具有不同的传染性.
研究这些EV对寄生虫与宿主相互作用和宿主免疫反应的影响.

主要方法:

蛋白质组分析蛋白质组分析
原子力显微镜的原子力显微镜.
免疫酶学测定试验
THP-1单细胞吸收和激活测定
测量细胞因子mRNA和氧化 (NO) 水平.
宿主细胞入侵测定试验

主要成果:

来自G和Y菌株的EV大小相似,但蛋白质组成不同,包括毒性因子.
这两种EV类型都被THP-1单细胞内化,激活NF-κB.
Y菌株EV增加了RANTES,TNF-α和IFN-βmRNA水平以及NO的产生.
两种菌株的EV增强了宿主细胞的入侵,而Y菌株的EV促进了更高的细胞内寄生虫数量.

结论:

T. cruzi菌株的感染性与EV分泌和宿主免疫反应的调节有关.
在查加斯病中观察到的不同感染模式中,EVs起着作用.

关键词:

试osoma cruzi 是一种类型的虫.细胞外囊泡中的细胞外囊泡.免疫系统免疫系统互动互动互动互动甲环状三马斯蒂哥特寄生虫与宿主之间的关系

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