主要的基本蛋白质和埃索诺菲尔过氧化酶支持微细菌的运动性,通过埃索诺菲尔的ETosis抑制ETosis
Pia Philippa Schumacher1, Jesuthas Ajendra1, Benjamin Lenz1
1Institute for Medical Microbiology, Immunology and Parasitology, University Hospital Bonn, Bonn, Germany.
PLoS neglected tropical diseases
|March 3, 2025
概括
氨基质蛋白质,如氨基氧化酶和主要的基本蛋白质,对于固定和杀死 filarial 寄生虫至关重要. 鼠标模型和自然宿主之间的氨基基细胞功能差异可能解释了寄生虫负载.
科学领域:
- 免疫学 免疫学 免疫学
- 寄生虫学的寄生虫学
- 细胞生物学 细胞生物学
背景情况:
- 乙素是细菌性感染中的关键效应细胞,通过细胞外陷攻击寄生虫.
- 这些陷含有有毒的性蛋白质,包括乙氨基氧化酶 (EPX) 和主要基本蛋白质 (MBP).
- 之前的研究表明,由微粒细胞诱导的乙酸细胞外细胞陷 (EETs) 抑制了寄生虫的运动性.
研究的目的:
- 为了研究电离蛋白在EET介导的微菌体固定中的特定作用.
- 为了比较小鼠模型和自然宿主,棉花鼠之间的氨基基效应因子功能.
主要方法:
- 使用缺乏EPX或MBP的淘汰小鼠来评估对EET介导的微粒细胞固定和杀死的影响.
- 进行了体外实验,将净化化蛋白质添加到微菌培养物中.
- 检查了棉花大鼠 (Sigmodon hispidus) 在使用PMA,zymosan和微细菌的刺激时的乙素反应.
主要成果:
- 来自EPX或MBP缺乏的小鼠的ETE显著降低了固定和杀死微细菌的能力.
- 阴离子蛋白在体外以剂量依赖的方式抑制微粒细胞的运动性.
- 在用PMA和zymosan刺激后,棉鼠的eosinophils释放了DNA,但不是微细菌.
结论:
- 氨基酸颗粒蛋白对于损害微细菌细胞运动性至关重要.
- 在小鼠模型和自然宿主之间存在显著差异的乙素效应因子功能.
- 棉花老鼠乙素中缺乏微细菌诱导的DNA网,可能会导致寄生虫负载更高,穿透时间更长.
相关概念视频
01:24Microtubules in Cell Motility
3.2K
Microtubules are thick hollow cylindrical proteins that help form the cytoskeleton. Microtubules have varied roles in the cell. These filaments help form cellular appendages like cilia and flagella, which are responsible for locomotion. The cilia arise from basal bodies, separated from the main body by a membrane-like structure forming the transition zone. This zone is the gate for the entry of lipids and proteins, creating a unique composition of lipids and proteins in the ciliary membrane and...
3.2K
01:39Mechanism of Filopodia Formation
2.3K
Filopodia are thin, actin-rich cellular protrusions that play an important role in many fundamental cellular functions. They vary in their occurrence, length, and positioning in different cell types, suggesting their diverse roles.
Their main function is to guide migrating cells during normal tissue morphogenesis or cancer metastasis by recognizing and making initial contacts with the extracellular matrix. However, they can also act as stationary cell anchors or help to establish communication...
Their main function is to guide migrating cells during normal tissue morphogenesis or cancer metastasis by recognizing and making initial contacts with the extracellular matrix. However, they can also act as stationary cell anchors or help to establish communication...
2.3K
01:05Mechanism of Ciliary Motion
3.6K
The ciliary structures were first seen in 1647 by Antonie Leeuwenhoek while observing the protozoans. In lower organisms, these appendages are responsible for cell movement, while in higher organisms, these appendages help in the movement of the extracellular fluids within the body cavities.
The cilia are made up of microtubules in a 9+2 arrangement, with nine microtubule doublet ring bundles, surrounding a pair of central singlet microtubule bundles. The doublet microtubule bundles are...
The cilia are made up of microtubules in a 9+2 arrangement, with nine microtubule doublet ring bundles, surrounding a pair of central singlet microtubule bundles. The doublet microtubule bundles are...
3.6K