Modern Pathology:角蛋白是尿路上皮瘤的一个敏感和特异性生物标记

2018-12-01 AlexYang MedSci原创

在尿路上皮肿瘤检测方面,新的生物标记的鉴定在临床上是迫切需要的,目的是改善诊断的准确性。最近,有研究人员评估了一种能够在癌症的多个解剖位点中促使细胞周期进程的癌蛋白-角蛋白17(K17),在膀胱活检和尿细胞学样本中作为尿路上皮瘤诊断生物标记的相关情况。研究发现,K17在低恶性潜能的乳头状尿路上皮瘤(PUNLMP)中的阳性肿瘤细胞比例均值为70%(范围为20%-90%);在高等级乳头状尿路上皮瘤(P

在尿路上皮肿瘤检测方面,新的生物标记的鉴定在临床上是迫切需要的,目的是改善诊断的准确性。最近,有研究人员评估了一种能够在癌症的多个解剖位点中促使细胞周期进程的癌蛋白-角蛋白17(K17),在膀胱活检和尿细胞学样本中作为尿路上皮瘤诊断生物标记的相关情况。

研究发现,K17在低恶性潜能的乳头状尿路上皮瘤(PUNLMP)中的阳性肿瘤细胞比例均值为70%(范围为20%-90%);在高等级乳头状尿路上皮瘤(PUC-LG)中的比例均值为30%(范围为5%-100%);在低等级乳头状尿路上皮瘤(PUC-HG)中的比例均值为20%(范围为1%-100%);在尿路上皮瘤(UC)中的比例均值为35%(范围为5%-100%);而在正常的尿路上皮粘膜中基本检测不到染色(范围0%-10%)。另外,定义K17染色不少于10%的细胞为阳性,在区分恶性病变(PUC-LG, PUC-HG和UC)和正常尿路上皮粘膜上,K17在生物活检中的敏感度为89%(95% CI: 80-96%),特异性为88%(95% CI: 70-95%)。进一步的是,L17免疫细胞染色在选择的112个尿液样本中检测尿道上皮瘤具有100%的敏感性和96%的特异性。

最后,研究人员指出,K17在组织样本中是尿路上皮肿瘤检测的敏感和特异性生物标记,应该在尿液样本中的细胞诊断中作为一种新的生物标记进一步探索。

原始出处:

Sruthi Babu, Daniel C. Mockler, Lucia Roa-Pena et al. Keratin 17 is a sensitive and specific biomarker of urothelial neoplasia. Modern Pathology. 15 Nov 2018.

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