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肺癌及其转移癌甲状腺转录因子-1mRNA表达的定量测试及分析 被引量:4

Quantitative analysis of thyroid transcription factor-1 mRNA expressions in primary lung cancer and its metastatic foci
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摘要 目的观察甲状腺转录因子-1(TTF-1)mRNA在正常成人肺泡Ⅱ型上皮细胞、人胚胎肺泡上皮细胞、肺癌原发灶及淋巴结转移灶癌细胞中的表达,从mRNA水平探讨其在肺癌发生、发展及转移中的意义。方法应用组织芯片和原位杂交技术检测1320点阵石蜡组织芯片中TTF-1mRNA的表达。用LeicaQ500MC图像分析系统定量测试TTF-1mRNA表达强度。结果胚胎肺TTF-1mRNA的表达强度小于正常成人肺(P=0.000);肺腺癌、鳞癌、小细胞癌和大细胞癌TTF-1mRNA的表达强度均小于胚胎肺和正常成人肺(P=0.000);肺腺癌和小细胞癌TTF-1mRNA的表达强度均大于肺鳞癌和大细胞癌(P=0.000);肺腺癌与小细胞癌TTF-1mRNA的表达强度基本相同(P=0.068);肺鳞癌TTF-1mRNA的表达强度大于大细胞癌(P=0.018);肺腺癌、鳞癌和大细胞癌淋巴结转移灶TTF-1mRNA的表达强度均大于其原发灶(P=0.003,P=0.000,P=0.019);肺小细胞癌淋巴结转移灶TTF-1mRNA的表达强度大于其原发灶(P=0.078);有淋巴结转移组TTF-1mRNA的表达强度大于无淋巴结转移组(P=0.026);TNM分期Ⅱ-Ⅳ期TTF-1mRNA的表达强度大于TNMⅠ期(P=0.010);肺癌TTF-1mRNA的表达强度与患者性别、肿瘤大体类型和分化程度无关。结论TTF-1mRNA的表达强度在正常成人肺泡Ⅱ型上皮细胞、胚胎肺泡上皮细胞和肺癌细胞中具有差异性并依次减少;肺癌TTF-1mRNA的表达具有癌组织类型差异性,腺癌和小细胞癌相对较高,鳞癌和大细胞癌极少;TTF-1mRNA高表达的肺癌易发生转移,TTF-1mRNA高表达的肺腺癌、鳞癌和大细胞癌为具有明显转移能力的肺癌细胞的重要标志之一。 Objective To observe the expression of thyroid transcription factor-1 (TTF-1) mRNA in human normal adult type II alveolar epithelial cells, embryonic alveolar epithelial cells, and primary lung carcinoma and lymph nodes, thereby exploring the role of TTF-1 mRNA expression in the tumorigenesis, development and metastasis of lung carcinoma. Methods TTF-1 mRNA was detected using tissue microarray and in situ hybridization in 1320 different paraffin-embedded tissue specimens. The intensity of TTF-1 mRNA in these tissues was assessed quantitatively using Leica Q500MC image analysis system. Results TTF-1 mRNA expression was significantly less intense in embryonic lung than in normal adult lung tissues (P=0.000), and the two tissues both had significantly greater expression than lung adenocarcinoma, squamous cell carcinoma, small cell carcinoma and large cell carcinma (P=0.000). Lung adenocarcinoma and small cell carcinoma, with similar expression intensity (P=0.068), showed stronger expression than squamous cell carcinoma and large cell carcinoma (P=0.000), and squamous cell carcinoma showed stronger expression than large cell carcinoma (P=0.018). In lung adenocarcinoma, squamous cell carcinoma and large cell carcinoma, the intensity of TTF-1 mRNA expression was stronger in lymph node metastases than in the primary foci (P=0.003, P=0.000, P=0.019, respectively). The lymph node metastases had more intense expression than the primary foci of small cell lung carcinoma (P=0.078). The intensity of TTF-1 mRNA expression was greater in primary lung carcinomas with lymph node metastases than in those without metastases (P=0.026). Tumors of TNM stage Ⅱ - Ⅳ had stronger expression than those of stage Ⅰ (P=0.010). The intensity of TTF-1 mRNA expression was not associated with the patients' gender or the general types and differentiation of the tumor. Conclusions The amount of TTF-1 mRNA expression lowers in the order of normal adult lung, embryonic lung and lung carcinoma tissues. I
作者 白晓燕 申洪
出处 《南方医科大学学报》 CAS CSCD 北大核心 2008年第1期20-25,共6页 Journal of Southern Medical University
基金 国家自然科学基金(30271462) 广东省科技攻关计划(2KM04501S) 广州市科技攻关重点(2003Z2-E0061 E0062)~~
关键词 肺癌 甲状腺转录因子-1 组织芯片 原位杂交 图像分析 lung carcinoma thyroid transcription factor-1 tissue microarray in situ hybridization image analysis
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