内源性先天传感器NLRP3是腹膜巨细胞动态的关键组成部分,它是 cestode 建立所需的
Irán Flores-Sotelo1, Natalia Juárez1, Marisol I González1
1Laboratorio de Inmunología Experimental y Regulación de la Inflamación Hepato-Intestinal, UBIMED, FES, Iztacala, UNAM, Tlalnepantla de Baz, Estado de México, Mexico.
Immunologic research
|June 6, 2024
概括
缺少NLRP3 (核酸结合性寡聚化域含蛋白3) 会通过减少抑制性巨细胞和改变免疫反应来增强对Taenia crassiceps感染的抵抗力. 这表明NLRP3对于寄生虫的建立至关重要.
科学领域:
- 免疫学 免疫学 免疫学
- 传染性疾病 传染性疾病
- 寄生虫学的寄生虫学
背景情况:
- 主要被称为NLRP3炎症体,主要用于触发炎症反应.
- 新出现的证据表明NLRP3也可能具有抗炎功能.
- 泰尼亚虫感染需要Th2免疫两极化和抑制性巨细胞来维持寄生虫的生存.
研究的目的:
- 在实验性Taenia crassiceps感染中研究核酸结合性寡合化域含蛋白3 (NLRP3) 的作用.
- 了解NLRP3缺乏如何影响宿主耐药性和感染期间的免疫细胞群.
主要方法:
- 在Taenia crassiceps感染模型中使用了NLRP3缺乏 (NLRP3-/-) 和野生型 (WT) 鼠.
- 评估了寄生虫的耐药性,细胞因子 (IL-4,IL-15) 和巨细胞群 (抑制性巨细胞).
- 对骨髓衍生的巨细胞进行了转录分析,并评估了微生物群交换的影响.
主要成果:
- 与WT小鼠相比,NLRP3-/-小鼠对T.crassiceps的耐药性明显更高.
- 在NLRP3-/-小鼠中的耐药性与IL-4降低,IL-15升高和更少的抑制性腹膜巨细胞有关.
- NLRP3-/-巨体显示出替代激活和抑制标记物的表达减少 (relm-α,PD-1配体).
- 从NLRP3-/-小鼠转移肠道微生物群给WT小鼠带来了耐药性.
结论:
- 对于Taenia crassiceps的建立,NLRP3是必不可少的,可能是通过促进巨细胞的招募和调节IL-15.
- 由于NLRP3缺乏,通过改变免疫细胞功能和细胞因子平衡,促进抵抗力.
- 主体微生物群在NLRP3介导的对T. crassiceps感染的易感性或抵抗性中起作用.
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