包装在细胞外囊中的长循环RNA:改善儿童B细胞急性淋巴细胞白血病风险评估的前景
Lucas Poncelet1,2, Chantal Richer1, Angela Gutierrez-Camino1,3
1Division of Hematology-Oncology, CHU Sainte-Justine Research Center, Montreal, QC H3T 1C5, Canada.
International journal of molecular sciences
|May 14, 2025
概括
这项研究确定了血液中的小细胞外囊中的长RNA转录,以非侵入性诊断儿童B细胞急性淋巴细胞白血病 (B-ALL) 并分层患者的风险. 这些循环RNAs为骨髓活检提供了一个有希望的替代方案.
科学领域:
- 分子生物学分子生物学
- 在瘤学瘤学.
- 生物化学 生化学
背景情况:
- 骨髓活检是诊断和监测儿童B细胞急性淋巴细胞白血病 (B-ALL) 的侵入性方法.
- 血液中的小细胞外囊泡 (sEV) 含有RNA生物标志物,提供一种不那么侵入性的液体活检方法.
- 在EV中较长的RNA物种 (mRNAs, lncRNAs, circRNAs) 在B-ALL风险分层方面未得到充分研究.
研究的目的:
- 来自儿童B-ALL患者的血液衍生的sEVs中的长RNA转录组的特征.
- 在sEV中识别潜在的RNA生物标记物,用于B-ALL的分子亚型和风险分层.
- 建立B-ALL诊断和监测的非侵入性方法.
主要方法:
- 从B-ALL患者和细胞模型的外周血液中对sEV进行免疫净化.
- 全转录组测序针对200个核酸以上的RNA转录.
- 开发一种新的数据分析管道,用于识别sEV中的RNA物种.
主要成果:
- 在患者衍生的SEV中确定了102种不同的RNA转录 (mRNA,lncRNA,circRNA,伪基因).
- 检测到与B-ALL.的两个分子子组相关的特定RNA配置文件.
- 证明了这些转录的潜力,作为诊断时基于风险的分层的生物标志物.
结论:
- 在血液衍生的sEV中循环的长RNA转录代表了儿童B-ALL.的新,非侵入性生物标志物来源.
- 这种方法可以帮助风险分层,并可能取代侵入性骨髓活检.
- 突出了液体活检对个性化B-ALL管理的潜力.
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