Pseudomonas aeruginosa通过激活癌症驱动的免疫抑制来加剧膀癌症的进展
Fu-Han Yang1, Wentao Zhang2, Ruiliang Wang3
1Tongji University Shanghai China.
Cancer immunology research
|January 9, 2026
概括
Pseudomonas aeruginosa 尿路感染通过创造免疫抑制瘤环境,使膀癌症恶化. 这涉及TLR5激活,导致MDSC招募和瘤生长,突出潜在的治疗点.
科学领域:
- 在瘤学瘤学.
- 微生物学 微生物学
- 免疫学 免疫学 免疫学
背景情况:
- 伪白菌感染对免疫功能低下的患有晚期尿路癌症的患者构成风险.
- P. aeruginosa对膀癌进展的具体影响尚不清楚.
研究的目的:
- 调查P. aeruginosa在恶化膀癌进展中的作用.
- 阐明感染驱动的瘤生长和免疫抑制的潜在机制.
主要方法:
- 膀癌与P. aeruginosa尿路感染 (UTI) 的小鼠模型.
- 对信号通路的分析,包括收费类受体5 (TLR5) 和ERK1/2.2.
- 化学基因分析 (CCL20) 和骨髓衍生抑制细胞 (MDSC) 招募评估.
- 人类膀癌组织的16S rRNA测序和转录组分析.
主要成果:
- 在小鼠中,P. aeruginosa UTI 通过诱导免疫抑制瘤微环境,加剧了膀癌的进展.
- 在膀癌细胞上,P. aeruginosa激活了TLR5,导致ERK1/2酸化和CCL20分泌.
- 这一途径促进了MDSC的招募,增强了免疫抑制和瘤生长.
- 临床膀癌样本显示P. aeruginosa的存在与晚期和升高的CCL20相关.
结论:
- P. aeruginosa通过TLR5-ERK1/2-CCL20-MDSC轴促进膀癌症的进展,有助于免疫抑制瘤微环境.
- 这项研究确定了在膀恶性瘤中微生物感染和癌症发病之间的显著相互作用.
- 针对这种由感染驱动的途径为膀癌提供了潜在的治疗策略.
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