BMC Cancer: 在前列腺癌中,ERCC1表达的增加与染色体变异和不良肿瘤生物学相关

2017-08-01 AlexYang MedSci原创

动物模型试验表明了DNA修复蛋白ERCC1(切除修复交叉互补组1)在前列腺癌发展过程中的作用。最近,有研究人员为了更好的认识ERCC1蛋白的表达在前列腺癌中的的影响,利用免疫组化技术对一个之前存在的包含了超过12000份前列腺样本的组织芯片(TMA)进行了分析,并且将数据与肿瘤表型、PSA复发和几种最为常见的变异(TMPRSS2:ERG fusions: deletions of PTEN, 6q

动物模型试验表明了DNA修复蛋白ERCC1(切除修复交叉互补组1)在前列腺癌发展过程中的作用。最近,有研究人员为了更好的认识ERCC1蛋白的表达在前列腺癌中的的影响,利用免疫组化技术对一个之前存在的包含了超过12000份前列腺样本的组织芯片(TMA)进行了分析,并且将数据与肿瘤表型、PSA复发和几种最为常见的变异(TMPRSS2:ERG fusions: deletions of PTEN, 6q, 5q, 3p)进行了比较。

研究发现,ERCC1染色在10436份可判读的样品中的64.7%中观察到,其中肿瘤染色弱的占37.1%,染色中等程度的占22.6%,染色强烈的占5%。另外,高水平的ERCC1染色与晚期pT阶段、高格林森得分、阳性淋巴结、术前高血清PSA和阳性手术切缘状况相关(p<0.0001)。高ERCC1的表达与PSA复发风险的提高相关(p<0.0001)。这与建立的预后特性并没有相关性。通过可比的量化格林森等级定义的一个亚群癌症分析表明,预后因素最经常由格林森3+3或者3+4低等级肿瘤驱使(格林森4:≤5%)。高ERCC1表达还与基因组变异显著相关,并且表达水平随着肿瘤中基因缺失的数目的增加而增加。这表明了ERCC1的表达与基因组不稳定性具有功能上的关系。最后,研究人员指出,ERCC1-基因组不稳定性的潜在代表,它的表达在前列腺癌中是一个独立的预后标记,尤其在低等级肿瘤中非常重要。

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    2018-06-19 isabellayj
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    2017-08-06 1e145228m78(暂无匿称)

    学习了,谢谢作者分享!

    0

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