Gastroenterology:粪便中MicroRNA谱可以检测大肠癌的发生

2020-03-08 MedSci原创 MedSci原创

筛查结直肠癌(CRC)最广泛的办法就是粪便免疫化学测试,但是该方法受检测晚期腺瘤(AAs)的灵敏度低的限制。因此,本项研究旨在探究粪便样本中的microRNA(miRNA)是否可以鉴别A

背景与目标: 筛查结直肠癌(CRC)最广泛的办法就是粪便免疫化学测试,但是该方法受检测晚期腺瘤(AAs)的灵敏度低的限制。因此,本项研究旨在探究粪便样本中的microRNA(miRNA)是否可以鉴别AA或CRC的患者。

方法:本项研究包括四个阶段。在发现阶段,研究人员对来自西班牙的124份新鲜的成对结直肠肿瘤和非肿瘤样本(30 CRC;32AA)进行了全基因组miRNA表达谱分析。在技术验证阶段,通过逆转录聚合酶链反应,对发现阶段(n = 39)的部分患者和无结直肠肿瘤个体的粪便样品中的逆转录聚合酶链反应进行定量,测定了在肿瘤组织与非肿瘤组织中表达水平发生变化的miRNA,n=39)。在临床验证阶段,通过定量反转录聚合酶链反应分析发现最显着上调的miRNA,在独立的一组粪便样本(n = 767)中进行了测定。

结果:在分别在CRC和AA组织中显着失活的200和324个miRNA中,研究人员发现MIR421,MIR130b-3p和MIR27a-3p在晚期肿瘤患者的粪便样本中明显上调。粪便MIR421,MIR27a-3p和血红蛋白的组合的模型确定了CRC患者的曲线下面积(AUC)为0.93,而粪便血红蛋白浓度的AUC为0.67。

结论:本项研究表明与单独的粪便血红蛋白浓度相比,粪便中miRNA和血红蛋白水平的升高可以更准确地识别AA或CRC患者。

原始出处:

Saray Duran-Sanchon. Et al. Identification and Validation of MicroRNA Profiles in Fecal Samples for Detection of Colorectal Cancer. Gastroenterology.2020.

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    2020-09-24 许安
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    2020-11-02 xjy02
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    2020-03-10 zhouqu_8
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    2020-03-10 Homburg
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