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Clin Trans Gastro: 早期胰腺瘤形成的新型循环miRNA特征

2019-05-20 不详 MedSci原创

胰腺导管腺癌(PDAC)是所有癌症中存活率最低的,因为只有6%的患者能达到5年生存。几种微小RNA(miRNA)表达的改变发生在PDAC肿瘤和癌前病变中,称为导管内乳头状粘液性肿瘤(IPMN)。因此,本项研究旨在确定哪些miRNA在PDAC和IPMN患者的液体活组织检查中发生显着改变,以找到用于早期检测PDAC的新的非侵入性生物标志物。

背景及目标:
胰腺导管腺癌(PDAC)是所有癌症中存活率最低的,因为只有6%的患者能达到5年生存。几种微小RNA(miRNA)表达的改变发生在PDAC肿瘤和癌前病变中,称为导管内乳头状粘液性肿瘤(IPMN)。因此,本项研究旨在确定哪些miRNA在PDAC和IPMN患者的液体活组织检查中发生显着改变,以找到用于早期检测PDAC的新的非侵入性生物标志物。

方法:
研究人员通过实时定量逆转录PCR(qRT-PCR)分析了182个血浆样本中的17个循环miRNA的表达,这些miRNA先前在组织胰腺肿瘤中显着过表达(94 PDAC,19 IPMN, 18例慢性胰腺炎,51例健康对照)。然后,研究人员分析了相同血浆组中的CA19.9水平,并且评估了差异表达的miRNA,CA19.9和所有可能的组合的诊断值。

结果:
值得注意的是,与对照健康血浆相比,PDAC,IPMN和慢性胰腺炎中分别有16,14和9种miRNA显着增加。miR-21-5p,miR-33a-3p,miR-320a和miR-93-5p显示出最高的胰腺瘤(PDAC或IPMN)鉴别能力,接受者操作特征曲线(AUC)下面积为0.86,分别为0.85,0.85和0.80。2-miRNA组合改善了“miR-33a-3p + miR-320a”的这些性能达到AUC = 0.90。加入CA19.9增加了miRNA特征的诊断潜力,“miR-33a-3p + miR-320a + CA19.9”的组合甚至进一步达到0.95的AUC(93%灵敏度和85%)特异性)。

结论: 
结合miRNA和CA19.9的新型特征可用作早期检测PDAC的非侵入性生物标志物。

原始出处:
Vila-Navarro, Elena. Et al. Novel Circulating miRNA Signatures for Early Detection of Pancreatic Neoplasia. Clinical and Translational Gastroenterology. 2019.

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    2019-11-21 bsmagic9140
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    2020-03-07 smallant2002
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    2019-12-01 许安
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    2019-05-22 Homburg

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