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Identification of microRNAs involved in the radioresistance of esophageal cancer cells.

机译:鉴定与食道癌细胞抗辐射性有关的微小RNA。

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摘要

Radioresistance is considered as the most important reason for local tumour recurrence. This study investigates the role of miRNAs in radioresistant human esophageal cancer cells. Human miRNA microarray has been used to detect the differential expressed microRNAs between radioresistant esophageal cell line KYSE-150R and the parental cell line KYSE-150. The relative expression of some candidate miRNAs was measured by quantitative real-time PCR (qRT-PCR). Potential mRNA targets were analysed bioinformatically. Significant upregulation of 10 microRNAs and downregulation of 25 microRNAs were detected. The statistical significance of downregulation in hsa-miR-301a, hsa-miR-141 and hsa-miR-18b expression (P?
机译:放射抵抗被认为是局部肿瘤复发的最重要原因。这项研究调查了miRNA在耐辐射的人类食道癌细胞中的作用。人miRNA微阵列已用于检测耐辐射食管细胞系KYSE-150R和亲代细胞系KYSE-150之间差异表达的microRNA。通过定量实时PCR(qRT-PCR)测量一些候选miRNA的相对表达。潜在的mRNA靶标进行了生物信息学分析。检测到10个microRNA的显着上调和25个microRNA的下调。通过qRT-PCR证实了hsa-miR-301a,hsa-miR-141和hsa-miR-18b表达下调的统计学意义(P≤0.05)。通过功能注释证实了预测的microRNA靶基因与凋亡(63个基因),细胞周期(67个基因),DNA损伤和修复(18个基因)之间的相关性。 hsa-miR-301a的下调通过wnt1的上调促进了KYSE-150R的抗辐射性,表明wnt /β-catenin信号通路可能在抗辐射中很重要。总之,已鉴定出一组独特的miRNA及其在辐射抗性中的表达谱,为今后研究这些miRNA的靶基因及其功能提供了坚实的基础。

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