首页> 美国卫生研究院文献>Asian Pacific Journal of Cancer Prevention : APJCP >Significance of DNA Replication Licensing Proteins (MCM2 MCM5 and CDC6) p16 and p63 as Markers of Premalignant Lesions of the Uterine Cervix: Its Usefulness to Predict Malignant Potential
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Significance of DNA Replication Licensing Proteins (MCM2 MCM5 and CDC6) p16 and p63 as Markers of Premalignant Lesions of the Uterine Cervix: Its Usefulness to Predict Malignant Potential

机译:DNA复制许可蛋白(MCM2MCM5和CDC6)p16和p63作为子宫宫颈癌前病变标记的意义​​:其预测恶性潜能的作用

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摘要

Cervical cancer continues to be a leading cancer among women in many parts of the world. Nation-wide screening with the Pap smear has not been implemented in India due to the lack of adequately trained cytologists. Identification of biomarkers to predict malignant potential of the identified low risk lesions is essential to avoid excessive retesting and follow up. The current study analyzed the expression patterns of DNA replication licensing proteins, proliferation inhibitor protein p16INK4A and tumor suppresser protein p63 in cervical tissues and smears to assess the ability of these proteins to predict progression.Methods:Cervical smears and corresponding tissues were immunostained using mouse monoclonal antibodies against MCM2, MCM5, CDC6, p16 and p63. Smears were treated with a non-ionic surfactant sodium deoxycholate prior to immuno-cytochemistry. The standard ABC method of immunohistochemistry was performed using DAB as the chromogen. The immunostained samples were scored on a 0-3+ scale and staining patterns of smears were compared with those of tissue sections. Sensitivity and specificity for each of these markers were calculated taking histopathology as the gold standard.
机译:宫颈癌仍然是世界许多地区女性的主要癌症。由于缺乏训练有素的细胞学家,印度尚未进行巴氏涂片检查在全国范围内的筛查。鉴定生物标志物以预测已鉴定出的低风险病灶的恶性潜力对于避免过度检查和随访至关重要。本研究分析了DNA复制许可蛋白,增殖抑制蛋白p16INK4A和肿瘤抑制蛋白p63在宫颈组织和涂片中的表达模式,以评估这些蛋白预测进展的能力。方法:使用小鼠单克隆抗体对宫颈涂片和相应组织进行免疫染色抗MCM2,MCM5,CDC6,p16和p63的抗体。在免疫细胞化学之前,涂片用非离子表面活性剂脱氧胆酸钠处理。免疫组织化学的标准ABC方法是使用DAB作为色原进行的。将免疫染色的样品按0-3 +评分,并将涂片的染色模式与组织切片的染色模式进行比较。以组织病理学为金标准,计算每种标志物的敏感性和特异性。

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