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首页> 外文期刊>Cancer: A Journal of the American Cancer Society >Gene-expression profiling in Chinese patients with colon cancer by coupling experimental and bioinformatic genomewide gene-expression analyses: identification and validation of IFITM3 as a biomarker of early colon carcinogenesis.
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Gene-expression profiling in Chinese patients with colon cancer by coupling experimental and bioinformatic genomewide gene-expression analyses: identification and validation of IFITM3 as a biomarker of early colon carcinogenesis.

机译:通过耦合实验和生物信息学全基因组基因表达分析,对中国结肠癌患者进行基因表达谱分析:IFITM3作为早期结肠癌发生的生物标志物的鉴定和验证。

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摘要

BACKGROUND.: Expression microarrays are widely used for investigating the nature and extent of global gene-expression changes in human cancer. Accurate genomewide gene-expression profiles have not been conducted in colon tumor and normal colon tissue specimens obtained from Chinese patients. METHODS.: In the present study a pure population of colon cancer and normal colon cells was obtained and the global gene-expression differences were compared in the 2 cell types using combined experimental and bioinformatic approaches. Various categories of genes that were differentially expressed in those 2 types of cells were identified, including a novel candidate tumor marker, IFITM3. RESULTS.: Elevated IFITM3 expression in colon cancer cells was first confirmed using quantitative real-time polymerase chain reaction. IFITM3 protein expression in human colon cancer specimens was further analyzed using both tissue microarray and standard tissue sections by immunostaining analyses. It was found that there was a significant IFITM3 increase in adenoma as compared with that in normal colon tissue. CONCLUSIONS.: The data suggest that IFITM3 plays an important role in early colon cancer development. Cancer 2008. (c) 2008 American Cancer Society.
机译:背景:表达微阵列被广泛用于研究人类癌症中全球基因表达变化的性质和程度。在从中国患者获得的结肠肿瘤和正常结肠组织标本中,尚未进行准确的全基因组基因表达谱分析。方法:在本研究中,获得了结肠癌和正常结肠细胞的纯种群,并使用组合的实验方法和生物信息学方法比较了两种细胞类型中的总体基因表达差异。鉴定了在这两种类型的细胞中差异表达的各种基因,包括新型候选肿瘤标志物IFITM3。结果:首先使用定量实时聚合酶链反应确认了结肠癌细胞中IFITM3表达的升高。使用组织微阵列和标准组织切片,通过免疫染色分析进一步分析了人结肠癌标本中的IFITM3蛋白表达。与正常结肠组织相比,发现腺瘤中的IFITM3显着增加。结论:数据表明IFITM3在早期结肠癌的发展中起重要作用。癌症2008。(c)2008美国癌症协会。

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