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中华普通外科学文献(电子版) ›› 2013, Vol. 07 ›› Issue (03) : 174 -178. doi: 10.3877/cma.j.issn.1647-0793.2013.03.003

所属专题: 文献

论著

细胞增殖标记物MCM2在结直肠腺瘤的表达差异及意义
王永1,(), 宋怡才1, 尹作文1, 喻军1, 刘立1, 李一帆2, 郭梅梅3   
  1. 1. 518052 深圳,华中科技大学协和深圳医院(原深圳市第六人民医院)胃肠外科
    2. 518052 深圳,华中科技大学协和深圳医院(原深圳市第六人民医院)中心实验室
    3. 518052 深圳,华中科技大学协和深圳医院(原深圳市第六人民医院)消化内科
  • 收稿日期:2012-11-08 出版日期:2013-06-01
  • 通信作者: 王永
  • 基金资助:
    深圳市科技计划项目基金(201003280)

Expression of Minichromosome maintenance 2 mRNA in colorectal adenoma and its clinical significance

Yong WANG1,(), Yi-cai SONG1, Zuo-wen YIN1, Jun YU1, Li LIU1, Yi-fan LI2, Mei-mei GUO3   

  1. 1. Department of Gastrointestinal Surgery, Xiehe-Shenzhen Hospital, Huazhong University of Science and Technology, Shenzhen 518052, China
  • Received:2012-11-08 Published:2013-06-01
  • Corresponding author: Yong WANG
  • About author:
    Corresponding author: WANG Yong, Email:
引用本文:

王永, 宋怡才, 尹作文, 喻军, 刘立, 李一帆, 郭梅梅. 细胞增殖标记物MCM2在结直肠腺瘤的表达差异及意义[J]. 中华普通外科学文献(电子版), 2013, 07(03): 174-178.

Yong WANG, Yi-cai SONG, Zuo-wen YIN, Jun YU, Li LIU, Yi-fan LI, Mei-mei GUO. Expression of Minichromosome maintenance 2 mRNA in colorectal adenoma and its clinical significance[J]. Chinese Archives of General Surgery(Electronic Edition), 2013, 07(03): 174-178.

目的

探讨细胞增殖标记物微小染色体支持蛋白2(MCM2)在结直肠腺瘤中的表达及MCM2的表达差异与不同临床病理特征的关系。

方法

应用免疫组化SP法检测MCM2在结直肠腺瘤中的表达部位;应用实时荧光定量PCR法检测MCM2 mRNA在112例结直肠腺瘤中表达量的差异,同时用REST-XL?软件分析不同临床病理特征的结肠腺瘤之间MCM2的表达差异及其意义。

结果

MCM2在结直肠腺瘤呈全层上皮表达,MCM2 mRNA表达与结直肠腺瘤患者的年龄和腺瘤直径、形态及组织病理类型无关,不同腺瘤间不典型增生程度与MCM2 mRNA表达量有显著差异性(P < 0.05)。

结论

细胞增殖标记物MCM2在结直肠腺瘤表达与腺瘤不典型增生程度相关,可能作为早期筛查诊断结肠癌及评估腺瘤突变的指标之一。

Objective

To quantitatively compare the difference of minichromosome maintenance protein 2(MCM2) mRNA expression in colorectal adenomas with different clinicopatholigic characters. The aim was to further investigate the potential role of MCM2 in early diagnosis.

Methods

One hundred and twelve colorectal adenomas were collected, and each specimen was divided into two parts, one for immunohistochemistry and the other for real-time RT-PCR. Differences of MCM2 mRNA expression in colorectal adenomas with different clinicopatholigic characters were evaluated by REST-XL?.

Results

The expression of MCM2 mRNA was examined throughout epithelium in colorectal adenomas, and the expression of MCM2 mRNA in adenomas with high grade dysplasia was significantly higher than that in adenomas with low grade dysplasia(P = 0.032). MCM2 mRNA expression elevated in adenoma with villous type, larger size, sessile morphology and older age of patients, but the significant differences were not obtained by REST-XL?.

Conclusion

The expression of MCM2 in colorectal adenomas relative with grade dysplasia indicate the potential value of MCM2 in early diagnosis of colonic cancer.

表1 112例结直肠腺瘤患者的临床病理因素与MCM2mRNA表达的关系
图1 绒毛状腺瘤(免疫组化SP法,20×10)绒毛状腺瘤中见指状绒毛状突起,腺瘤组织中可见棕黄色的MCM2阳性颗粒,色泽深,在绒毛状腺瘤的腺上皮全层均有表达。
图2 管状绒毛状腺瘤(免疫组化SP法,20×10)管状绒毛状腺瘤组织中可见棕黄色的MCM2阳性颗粒在腺上皮全层均有表达。
图3 管状腺瘤(免疫组化SP法,20×10)在管状腺瘤组织中,可见MCM2阳性颗粒弱于绒毛状腺瘤组,但在腺上皮全层均有表达。
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