细菌细胞外囊泡和微生物衍生的小RNA作为循环癌症生物标志物
Muhammad Shahid Mehmood1, Naseeb Danaf2
1Institute of Microbiology, University of Agriculture Faisalabad, Faisalabad, Pakistan.
Annals of medicine and surgery (2012)
|January 7, 2026
概括
血中的细菌细胞外囊泡 (BEVs) 和微生物小RNAs (msRNAs) 显示为新型癌症生物标志物具有前途. 这些循环分子可以早期检测,并提供有关瘤的信号通路的见解.
科学领域:
- 生物化学 生物化学
- 在瘤学瘤学.
- 微生物学 微生物学
背景情况:
- 细菌细胞外囊泡 (BEV) 和微生物衍生小RNA (msRNA) 越来越多地被认为是它们作为循环生物标志物的潜力.
- 它们在人体血中的存在和载荷与包括癌症在内的各种生理和病理状况有关.
研究的目的:
- 研究BEVs和msRNAs作为早期癌症检测的非侵入性生物标志物的实用性.
- 探索BEV相关的msRNAs在癌症发展和进展中的功能性作用.
- 评估BEVs用于液体活检的稳定性和临床可行性.
主要方法:
- 来自1100多名癌症患者和对照组的血样本的多队列分析.
- 对BEV水平的量化和微生物RNA载荷的分析.
- 开发和验证用于癌症检测的BEV-msRNA面板,使用接收器操作特征 (ROC) 分析.
- 功能性测试以确定msRNAs对瘤相关信号通路的影响 (NF-κB,STAT3,TP53/PTEN).
- 在流通中的BEV稳定性的评估.
主要成果:
- 与对照组相比,癌症患者的BEV水平显著升高 (2.8至3.5倍).
- 微生物RNA占血RNA总量的1.6%,特定的msRNA已被确定.
- BEV-msRNA面板在早期癌症检测方面表现出高的诊断准确性 (AUC 0.87-0.94),超过了CEA和CA19-9.等常规标志物.
- 发现与BEV相关的msRNAs调节关键的癌症信号通路,包括NF-κB和STAT3激活,以及TP53/PTEN抑制,促进炎症.
- BEVs表现出了显著的稳定性,在循环中可检测72个小时以上.
结论:
- 循环的BEV和msRNA代表了一类新的与机制相关的生物标志物,用于非侵入性癌症检测.
- 这些生物标志物与现有的标志物相比,在早期癌症诊断方面提供了更高的性能.
- BEVs是稳定的,适合临床液体活检应用,使得精确的癌症监测.
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