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RT-PCR扩增K19检测胃癌区域淋巴结微转移

所 剑,陶正贵,李 虹,金洪娟,赵 航   

  1. 吉林大学第一医院普通外科,吉林 长春130021
  • 收稿日期:2003-10-30 修回日期:1900-01-01 出版日期:2004-07-28 发布日期:2004-07-28

Detection of gastric cancer micrometastasisin regional lymph nodes by K19 mRNA RT-PCRSUO

Jian, TAO Zheng-gui, LI Hong, JIN Hong-Jun, ZHAO Hang   

  1. Department of General Surgery, First Hospital, Jilin University, Changchun 130021, China
  • Received:2003-10-30 Revised:1900-01-01 Online:2004-07-28 Published:2004-07-28

摘要: 目的:探讨RT-PCR检测胃癌区域淋巴结微转移的价值及其应用前景。方法:以病理组织学和RT-PCR扩增K19对30例胃癌患者的癌组织标本及126个淋巴结进行检测。结果:30例胃癌患者癌组织均有K19 mRNA表达;126个淋巴结中,组织学阳性26个(20.6%),而RT-PCR阳性42个(33.3%),RT-PCR扩增K19及内参基因β-actin后,所有瘤组织、转移淋巴结显示460和540 bp的扩增片段,非肿瘤患者的淋巴结中仅显示540 bp。 结论:RT-PCR扩增K19 mRNA检测胃癌区域淋巴结微转移是一种敏感、特异的检测方法,优于常规病理组织学。

关键词: 逆转录聚合酶链反应, 角蛋白19, 淋巴结, 微转移

Abstract: Objective To study the detection of gastric cancer micrometastasis in regional lymph nodes by reverse transcriptase polymerase chain reaction (RT-PCR)and its promising application. Methods Tumor tissues of 30 cases of gastric cancer and 126 lymph nodes were studied by both histopathological examination and K19 mRNA RT-PCR. Results K19 mRNA expressed in all specimens of 30 patients with gastric cancer, 26 examined lymph nodes showed postive lymph node metastasis by routine histopathological examination (20.6%), but the number of postive lymph nodes detected by RT-PCR increased to 42 (33.3%). After K19 and β-actin were amplificated by RT-PCR, the amplification fragments of 460 and 540 bp appeared in all cancer and gastrointestinal tissues. Conclusion K19mRNA detection by RT-PCR is superior to routine histpathological examination and is a highly sensitive and specific method.

Key words: reverse transcriptase polymerase chain reaction, K19, lymph nodes, micrometastasis

中图分类号: 

  • R735.2