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MicroRNA expression patterns in the malignant progression of gliomas and a 5-microRNA signature for prognosis

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机构: [1]Capital Med Univ, Beijing Neurosurg Inst, Beijing, Peoples R China; [2]Nanjing Med Univ, Dept Neurosurg, Affiliated Hosp 1, Nanjing, Jiangsu, Peoples R China; [3]Beijing Inst Brain Disorders Brain Tumor Ctr, Beijing, Peoples R China; [4]Capital Med Univ, Dept Neurosurg, Beijing Tiantan Hosp, Beijing, Peoples R China
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关键词: Anaplastic Gliomas Secondary Glioblastomas Proneural Glioblastomas MicroRNAs MiR-105-767 cluster TCGA

摘要:
MicroRNAs (miRNAs) are directly involved in the progression in various cancers. To date, no systematic researches have been performed on the expression pattern of miRNA during progression from low grade gliomas to anaplastic gliomas or secondary glioblastomas and those prognostic miRNAs in anaplastic gliomas and secondary glioblastomas. In the present study, high-throughput microarrays were used to measure miRNA expression levels in 116 samples in the different progression stages of glioma. We found that miRNA expression pattern totally altered when low grade gliomas progressed to anaplastic gliomas or secondary glioblastomas. However, anaplastic gliomas and secondary glioblastomas have similar expression pattern in miRNA level. Furthermore, we developed a five-miRNA signature (two protective miRNAs-miR-767-5p, miR-105; three risky miRNAs: miR-584, miR-296-5p and miR-196a) that could identify patients with a high risk of unfavorable outcome in anaplastic gliomas regardless of histology type. It should be highlighted that the five-miRNA signature can also identify patients who had a high risk of unfavorable outcome in secondary and TCGA Proneural glioblastomas, but not Neural, Classical and Mesenchymal glioblastomas. Taken together, our results demonstrate that miRNA expression patterns in the malignant progression of gliomas and a novel prognostic classifier, the five-miRNA signature, serve as a prognostic marker for patient risk stratification in anaplastic gliomas, Secondary and Proneural glioblastomas.

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出版当年[2013]版:
大类 | 2 区 医学
小类 | 2 区 肿瘤学 3 区 细胞生物学
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出版当年[2012]版:
Q1 CELL BIOLOGY Q1 ONCOLOGY
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第一作者机构: [1]Capital Med Univ, Beijing Neurosurg Inst, Beijing, Peoples R China; [2]Nanjing Med Univ, Dept Neurosurg, Affiliated Hosp 1, Nanjing, Jiangsu, Peoples R China;
通讯作者:
通讯机构: [1]Capital Med Univ, Beijing Neurosurg Inst, Beijing, Peoples R China; [3]Beijing Inst Brain Disorders Brain Tumor Ctr, Beijing, Peoples R China; [4]Capital Med Univ, Dept Neurosurg, Beijing Tiantan Hosp, Beijing, Peoples R China
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