在膀中训练有素的免疫力ILC3s增强了对反复发作的尿路感染的粘膜防御
Qiaoqiao Pei1,2, Jiaqi Liu1,2, Ziwen Tang1,2
1Department of Nephrology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, China.
Biomedicines
|January 28, 2026
概括
由于免疫力较弱,反复出现的尿路感染 (rUTIs) 是一个挑战. 这项研究表明,膀先天性淋巴细胞 (ILC) 在感染后发展出训练有素的免疫力,改善了对重复的细菌入侵的防御能力.
科学领域:
- 免疫学 免疫学 免疫学
- 传染性疾病 传染性疾病
- 泌尿器科 泌尿器科 泌尿器科 泌尿器科
背景情况:
- 尿路感染 (UTI) 在全球范围内很常见,由于保护性免疫不充分,反复发生的尿路感染 (rUTIs) 带来了重大挑战.
- 培训免疫在膀居民3组先天性淋巴细胞 (ILCs) 对尿路病原菌大肠杆菌 (UPEC) 的作用尚不清楚.
研究的目的:
- 为了调查ILC3s是否在暴露于UPEC后发展出训练免疫力.
- 确定ILC3训练免疫对粘膜防御对RUTI的贡献.
主要方法:
- 在UPEC感染后,对人类和小鼠膀的ILC3计数进行分析.
- 建立一个经常性UTI小鼠模型,采用天真和训练有素的ILC3s的采用转移.
- 评估细菌负载,组织病理学,屏障功能,炎症和细胞因子/抗菌的产生.
主要成果:
- 主要的UPEC感染诱导了膀中的ILC3扩张.
- 二次UPEC挑战导致ILC3s的训练免疫力,增强了扩散和IL-17A/IL-22的产生.
- 经过训练的ILC3s通过上调抗微生物和抑制促炎细胞因子,改善了泌尿道屏障完整性并减少了炎症.
结论:
- UPEC通过训练免疫来启动膀ILC3s,增强IL-17A和IL-22介导的保护,防止复发性感染.
- 这项研究揭示了ILC3训练的免疫作为一种新型的内源性防御机制,以抵抗RUTI.
- 这些发现为开发针对RUTI的新免疫疗法提供了基础.
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