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中国癌症防治杂志 ›› 2013, Vol. 5 ›› Issue (2): 130-134.doi: 10.3969/j.issn.1674-5671.2013.02.11

• 临床研究 • 上一篇    下一篇

IGFBP4和PAPPA在非小细胞肺癌中的表达及临床意义

  

  1.  广西医科大学附属肿瘤医院胸外科;广西医科大学研究生学院
  • 出版日期:2013-06-25 发布日期:2013-06-27
  • 通讯作者: 潘 泓 E-mail:pan_hong1999@yahoo.com.cn
  • 基金资助:

    广西自然科学基金资助项目(桂科青0832077)

Expression and clinical significance of IGFBP4 and PAPPA in non-small cell lung cancer

  • Online:2013-06-25 Published:2013-06-27

摘要: 目的 研究IGFBP4和PAPPA基因在非小细胞肺癌(non-small cell lung cancer,NSCLC)组织中的表达水平,并分析其临床意义。方法 提取55例手术治疗的NSCLC癌组织及癌旁组织的RNA,采用实时荧光定量PCR方法检测组织中IGFBP4和PAPPA的表达水平。结果 IGFBP4基因在NSCLC癌组织中的表达低于癌旁组织(P<0.05),但高于正常肺组织(P<0.05),在鳞癌组织中的表达明显高于腺癌组织,其表达水平在年龄、性别、临床分期、有无淋巴结转移中无明显差别(P>0.05),IGFBP4高表达组患者的生存期明显高于低表达组(P<0.05)。PAPPA基因在NSCLC癌组织中的表达高于癌旁组织和正常肺组织(P<0.05),其在癌旁组织和正常肺组织中的表达水平无差异(P>0.05),在腺癌组织中的表达明显高于腺鳞癌组织,在有淋巴结转移组的表达明显高于无淋巴结转移组(P<0.05),其表达水平在年龄、性别、临床分期中无明显差别,PAPPA高表达组患者生存期明显低于低表达组(P<0.05)。IGFBP4与PAPPA在NSCLC组织中的表达水平呈显著正相关(r = 0.512,P = 0.000)。结论 IGFBP4和PAPPA基因的表达与NSCLC的生长有关,可以作为判断NSCLC预后的参考指标。

关键词:  , 肺肿瘤, 非小细胞肺癌, IGFBP4, PAPPA, 实时荧光定量PCR

Abstract: Objective To investigate the expression and clinical significance of IGFBP4 and PAPPA in patients with non-small cell lung cancer(NSCLC). Methods Total RNA was extracted from 55 pairs of NSCLC tissues and adjacent noncancerous tissues.IGFBP4 and PAPPA expression was detected using real-time quantitative RT-PCR. Results IGFBP4 expression was significantly lower in NSCLC tissue than in adjacent lung tissue,but significantly higher than in normal lung tissue(P<0.05).IGFBP4 expression was significantly higher in squamous carcinoma tissues than in adenocarcinoma.Furthermore,survival was longer in patients with high IGFBP4 expression than in those with low expression(P<0.05).However,IGFBP4 expression did not correlate with age,gender,histological dif-ferentiation grade or lymph node metastasis.PAPPA expression was significantly higher in NSCLC tissue than in adjacent or normal lung tissue(P<0.05).PAPPA expression was higher in cases of adenocarcinoma or lymph node metastasis than in cases of squamous carcinoma or cases without lymph node metastasis(P<0.05).Survival was shorter in patients expressing high levels of PAPPA than in those expressing low levels(P<0.05).However,PAPPA expression was not related with age,sex or clinical stage.There was a signifi-cant positive correlation between IGFBP4 and PAPPA expression in NSCLC tissues(r=0.512,P=0.000). Conclusions IGFBP4 and PAPPA may correlate with tumor growth in NSCLC,and may be useful as molecular prognostic indicators of NSCLC.

Key words:  Lung neoplasms, Non-small cell lung cancer, IGFBP4, PAPPA, Real-time quantitative RT-PCR