循环MicroRNAs在患有大脑转移的患者中没有提供比组织活检更好的诊断效果
Michaela Ruckova1,2, Dagmar Al Tukmachi1, Marek Vecera1
1Central European Institute of Technology, Masaryk University, 625 00, Brno, Czech Republic.
Scientific reports
|December 17, 2025
概括
大脑转移 (BMs) 在组织中显示出明显的microRNA (miRNA) 配置文件,但血液和CSF中循环的miRNA在识别癌症起源方面具有有限的诊断价值. 对基于组织的miRNA生物标志物的进一步研究是有必要的.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 生物标志物发现发现
背景情况:
- 大脑转移 (BMs) 是癌症的常见和严重并发症,需要准确的诊断和来源识别治疗.
- 目前用于BM的诊断方法通常涉及侵入性活检,强调需要更少的侵入性替代品和可靠的生物标志物.
- 循环微RNAs (miRNAs) 已成为各种癌症的有希望的生物标志物,因为它们具有敏感和特定检测的潜力.
研究的目的:
- 识别和比较脑转移 (BM) 组织,脑脊液 (CSF) 和血中的miRNA表达特征.
- 评估液体活检中循环miRNAs的诊断潜力,以确定BMs的来源.
- 调查miRNA签名在BMs中区分初级癌症起源的实用性.
主要方法:
- 小RNA测序被用于在BM组织 (n=30),血 (n=30) 和CSF (n=27) 中的miRNA表达的概况,这些患者有不同的BMs.
- 进行了差异表达分析,以确定显著改变的miRNAs.
- 分析了miRNA表达数据,以评估区分不同初级癌症类型转移到大脑的能力.
主要成果:
- 在BM组织中发现了显著差异表达的miRNAs,允许对乳腺癌,结直肠癌,细胞癌和黑色素瘤等原发病原因进行区分.
- 肺癌的异质性也体现在它们相应的BM中,这给精确的歧视带来了挑战.
- 在CSF和血中循环的miRNA显示BM患者的诊断潜力有限,尽管有不同的组织特异性miRNA特征.
结论:
- 在大脑转移中异常miRNA表达是显著的,并有可能用于来源识别.
- 与循环中的miRNA相比,组织特异的miRNA配置文件提供了更高的诊断精度.
- 血和脑脊液中循环的miRNAs对大脑转移的诊断效用较低,这表明在这种情况下基于液体活检的诊断价值有限.
更多相关视频
08:14MicroRNA Based Liquid Biopsy: The Experience of the Plasma miRNA Signature Classifier MSC for Lung Cancer Screening
Published on: October 26, 2017
16.1K
09:06MicroRNA Amplification and Recognition through Locked-nucleic-acid In situ Hybridization as A Novel Detection and Quantification Method
Published on: October 7, 2025
312
相关概念视频
MicroRNAs
3.7K
MicroRNA (miRNA) are short, regulatory RNA transcribed from introns (non-coding regions of a gene) or intergenic regions (stretches of DNA present between genes). Several processing steps are required to form biologically active, mature miRNA. The initial transcript, called primary miRNA (pri-mRNA), base-pairs with itself, forming a stem-loop structure. Within the nucleus, an endonuclease enzyme, called Drosha, shortens the stem-loop structure into hairpin-shaped pre-miRNA. After the pre-miRNA...
3.7K
MicroRNAs
23.8K
MicroRNA (miRNA) are short, regulatory RNA transcribed from introns—non-coding regions of a gene—or intergenic regions—stretches of DNA present between genes. Several processing steps are required to form biologically active, mature miRNA. The initial transcript, called primary miRNA (pri-mRNA), base-pairs with itself forming a stem-loop structure. Within the nucleus, an endonuclease enzyme, called Drosha, shortens the stem-loop structure into hairpin-shaped pre-miRNA. After...
23.8K
