New tools for assessing the individual risk of metastasis in renal cell carcinoma

New tools for assessing the individual risk of metastasis in renal cell carcinoma
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评估肾细胞癌个体转移风险的新工具

DOI:
10.1007/s10585-012-9529-6
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发表时间:
2013
影响因子:
4
通讯作者:
Goerge T
Goerge T
中科院分区:
医学3区
文献类型:
--
作者:
Herrmann E;Weishaupt C;Pöppelmann B;Hillgruber C;Puhse G;Krabbe LM;Feld M;Steinhoff M;Goerge T

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局限性肾细胞癌(RCC)在手术切除后进展为恶性疾病的比例为20- 40%。受影响的患者可能受益于辅助治疗,必须可靠地确定治疗适应症。然而,迄今为止,现有的分子标记和分类诺模图对于临床应用缺乏足够的有效性。因此,为了改进用于识别风险患者的诊断工具,我们测试了侵袭性和激活原代RCC细胞的血管内皮的能力作为肿瘤特异性功能参数。作为细胞侵袭性的参数,测试RCC细胞破坏上皮细胞单层的跨上皮电阻(TEER)的能力。抗性丧失,计算为侵袭指数,类似于细胞侵袭的程度。此外,测量与RCC细胞上清液孵育的内皮细胞分泌的血管性血友病因子作为内皮细胞活化的替代标志物。TEER测定结果在12例病例中的9例中与疾病的临床状态相匹配。转移性肿瘤和低分化肿瘤的侵袭指数显著增加(p= 0.007;p= 0.034)。9个样本中有5个样本的内皮细胞活化和临床结局匹配。此外,肿瘤细胞诱导的内皮细胞活化与RCC肿瘤的病理T分类状态显著相关(p= 0.009)。总之,我们的研究验证了内皮细胞活化分析和细胞侵袭性作为肿瘤扩散的单独预后标志物。TEER分析已被证明是一种有用的功能测定,提供了关于功能性肿瘤细胞特征的高度相关的个体信息,这些信息有助于病理学评估。
Localized renal cell carcinoma (RCC) progresses to metastastic disease in 20–40 % after surgical resection. Affected patients might benefit from adjuvant treatment and have to be reliably identified for treatment indication. However, existing molecular markers and classification nomograms lack sufficient validity for clinical application so far. Therefore, in order to improve diagnostic tools for the identification of patients at risk, we tested invasiveness and the capability to activate vascular endothelium of primary RCC cells as tumor specific functional parameters. As a parameter for cell invasiveness the ability of RCC cells to break-down transepithelial electrical resistance (TEER) of an epithelial cell monolayer was tested. Loss of resistance, calculated as invasivity index, resembled the degree of cell invasiveness. In addition, secretion of Von Willebrand Factor by endothelial cells incubated with RCC cell supernatant was measured as a surrogate marker for endothelial cell activation. TEER-assay results matched clinical status of disease in 9 out of 12 cases. Metastatic tumors and less differentiated tumors had a significant increase of invasivity index (p= 0.007;p= 0.034). Endothelial cell activation and clinical outcome matched in 5 out of 9 samples. In addition, tumor cell induced endothelial cell activation significantly correlated to the pathologic T classification status of RCC tumors (p= 0.009). Taken together, our study validated endothelial cell activation analysis and cell invasiveness as solitary prognostic markers for tumor dissemination. TEER-analysis has proven to be a useful functional assay giving highly relevant individual information on functional tumor cell characteristics that add to pathologic evaluation.
电阻击穿测定确定了蛋白酶在肿瘤细胞侵袭中的作用。
DOI: 10.1152/ajprenal.00327.2001
发表时间: 2002
期刊: American journal of physiology. Renal physiology
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DOI: 10.1007/bf01875708
发表时间: 1981
期刊: The Journal of Membrane Biology
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