Bladder Immune Cells Can Be Trained to Better Fight Recurrent UTIs
Bladder-resident ILC3 immune cells develop trained immunity after E. coli exposure, enhancing mucosal defense against recurrent urinary tract infections.
Quick Facts
What This Study Found
Bladder-resident ILC3s develop trained immunity following uropathogenic E. coli exposure, enhancing their ability to defend against recurrent UTIs.
Key Numbers
ILC3 counts compared between UTI patients and healthy controls. Recurrent UTI mouse model with primary and secondary E. coli inoculation. Adoptive transfer of naive vs UPEC-trained ILC3s.
How They Did This
Preclinical study investigating ILC3 trained immunity induction and functional significance in mucosal defense against uropathogenic E. coli in a bladder model.
Why This Research Matters
Recurrent UTIs affect millions and are increasingly treated with antibiotics that drive resistance. Harnessing trained immunity in bladder immune cells could provide a new antibiotic-free prevention strategy.
The Bigger Picture
Trained immunity — previously studied mainly in blood immune cells — is now shown to function at mucosal surfaces like the bladder. This expands our understanding of how the body can build innate defenses at infection-prone sites.
What This Study Doesn't Tell Us
Preclinical study — trained immunity in bladder ILC3s has not been demonstrated in humans. The mechanisms may differ between species.
Questions This Raises
- ?Can bladder ILC3 trained immunity be therapeutically enhanced to prevent rUTIs in patients?
- ?How long does the trained immunity persist in bladder-resident ILC3s?
Trust & Context
- Key Stat:
- Trained immunity in bladder ILC3s First demonstration that bladder-resident innate lymphoid cells can develop immune memory to better fight recurring urinary tract infections
- Evidence Grade:
- Preclinical study providing novel mechanistic insight. Human applicability needs to be confirmed through translational research.
- Study Age:
- Published in 2025, representing a novel finding in mucosal trained immunity.
- Original Title:
- Trained Immunity in Bladder ILC3s Enhances Mucosal Defense Against Recurrent Urinary Tract Infections.
- Published In:
- Biomedicines, 14(1) (2025)
- Authors:
- Pei, Qiaoqiao, Liu, Jiaqi, Tang, Ziwen, Tan, Jiaqing, Han, Xu, Hu, Xinrong, Liang, Zhou, Li, Feng, Zhu, Changjian, Lin, Ruoni, Zheng, Ruilin, Shen, Jiani, Liu, Qinghua, Mao, Haiping, Wu, Kefei, Chen, Wei, Zhou, Yi
- Database ID:
- RPEP-13002
Evidence Hierarchy
Tests effects in animals (usually mice or rats), not humans.
What do these levels mean? →Frequently Asked Questions
What is trained immunity?
Trained immunity is a form of immune memory in the innate immune system. Unlike adaptive immunity (which creates specific antibodies), trained immunity reprograms innate immune cells to respond more vigorously to future infections, regardless of the specific pathogen.
Could this help prevent recurring UTIs without antibiotics?
Potentially. If scientists can find ways to boost or trigger trained immunity in bladder ILC3 cells, it could provide a new antibiotic-free approach to preventing recurrent UTIs, reducing both antibiotic use and resistance.
Read More on RethinkPeptides
Cite This Study
https://rethinkpeptides.com/research/RPEP-13002APA
Pei, Qiaoqiao; Liu, Jiaqi; Tang, Ziwen; Tan, Jiaqing; Han, Xu; Hu, Xinrong; Liang, Zhou; Li, Feng; Zhu, Changjian; Lin, Ruoni; Zheng, Ruilin; Shen, Jiani; Liu, Qinghua; Mao, Haiping; Wu, Kefei; Chen, Wei; Zhou, Yi. (2025). Trained Immunity in Bladder ILC3s Enhances Mucosal Defense Against Recurrent Urinary Tract Infections.. Biomedicines, 14(1). https://doi.org/10.3390/biomedicines14010078
MLA
Pei, Qiaoqiao, et al. "Trained Immunity in Bladder ILC3s Enhances Mucosal Defense Against Recurrent Urinary Tract Infections.." Biomedicines, 2025. https://doi.org/10.3390/biomedicines14010078
RethinkPeptides
RethinkPeptides Research Database. "Trained Immunity in Bladder ILC3s Enhances Mucosal Defense A..." RPEP-13002. Retrieved from https://rethinkpeptides.com/research/pei-2025-trained-immunity-in-bladder
Access the Original Study
Study data sourced from PubMed, a service of the U.S. National Library of Medicine, National Institutes of Health.
This study breakdown was produced by the RethinkPeptides research team. We analyze and report published research findings without making health recommendations. All interpretations are based solely on the published abstract and study data.