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小鼠核糖酶6在实验性尿路感染期间限制细菌传播

Hanna Cortado¹, Macie Kercsmar¹, Birong Li¹

¹Kidney and Urinary Tract Center, The Abigail Wexner Research Institute at Nationwide Children's, Columbus, Ohio, USA.

Journal of innate immunity

|May 14, 2024

概括

рибо核酶6 (RNase6) 缺乏症通过破坏免疫细胞中的细菌杀死,增加了对尿路感染 (UTI) 的易感性. 这项研究表明,RNase6对于对尿病原性大肠杆菌 (UPEC) 的宿主防御至关重要.

科学领域:

免疫学免疫学免疫学
微生物学微生物学
遗传学是一个遗传学.

背景情况:

核糖核酶 (RNase) A超级家族包括有效对抗泌尿病原性细菌的阳离子抗微生物蛋白.
利核酶6 (RNase6) 是一种白细胞衍生的,对泌尿病原性大肠杆菌 (UPEC) 具有强大的杀菌活性.
泌尿病原性大肠杆菌 (UPEC) 是细菌性尿路感染 (UTI) 的主要原因.

研究的目的:

调查内源性RNase 6在限制宿主对尿路感染敏感性的作用.
产生和分析RNase6缺乏的小鼠,以了解其对尿路感染病原性的影响.

主要方法:

在小鼠中生成Rnase6-EGFP敲入等位基因.
识别RNase6.6的细胞来源.
在RNase6缺乏的小鼠中评估抗菌活性和尿路感染敏感性.

主要成果:

单细胞和巨细胞被确定为尿路中RNase6的主要细胞来源.
在实验性尿路感染期间,RNase6缺乏导致上部尿路的UPEC负担增加.
在RNase6缺乏的巨细胞中,UPEC表现出增强的细胞内生存率.

结论:

通过促进细胞内UPEC杀死,RNase6在预防白炎方面发挥着关键作用.
单细胞和巨细胞是RNase6介导的尿路感染防御中的关键细胞组成部分.
内生抗微生物RNase A蛋白质对宿主抵抗尿路感染的防御有显著的贡献.

关键词:

抗微生物是一种抗微生物.抗微生物蛋白是一种抗微生物蛋白.细菌感染是一种细菌感染.囊炎是一种囊炎.主机防御的主机防御巨细胞是一个巨细胞.一个单细胞.皮叶龙炎是一种炎症.尿路感染尿路感染

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