Department of Neurosurgery, Shengjing Hospital of China Medical University, Shenyang, China.
Department of Stomatology, Shengjing Hospital of China Medical University, Shenyang, China.
J Cell Mol Med. 2021 Feb;25(3):1383-1393. doi: 10.1111/jcmm.16221. Epub 2021 Jan 5.
Glioma is the most common intracranial malignant tumour. A clear diagnosis and molecular targeted therapy are of great significance for improving the survival time and quality of life of patients with low-grade glioma. 5-methylcytosine methylation is one of the ways of RNA modification, but there are limited studies on the role of m C methylation of low-grade glioma. Single-nucleotide variant, RNA expression matrix and corresponding clinical data of low-grade glioma came from public database. The single-nucleotide variant and expression of m C regulators were estimated. A prognostic model based on m C regulators was constructed by Cox regression. Potential functions of these molecules were assessed by gene set enrichment analysis. DNMT3A mutation was the most frequent among the m C regulators in low-grade glioma. NSUN3, TET2, TRDMT1, ALYREF, DNMT3B, DNMT1, NOP2 and NSUN2 were up-regulated. One prognostic model was constructed which had a strong predictive power for the overall survival of low-grade glioma. We studied the expression and prognostic characteristics of m C regulators in low-grade glioma, supplied biomarkers for the diagnosis and prognosis and provided the foundation for the study of the pathogenesis of low-grade glioma.
脑胶质瘤是最常见的颅内恶性肿瘤。明确诊断并进行分子靶向治疗对改善低级别脑胶质瘤患者的生存时间和生活质量具有重要意义。5-甲基胞嘧啶甲基化是 RNA 修饰的方式之一,但关于低级别脑胶质瘤 m C 甲基化的作用研究有限。低级别脑胶质瘤的单核苷酸变异、RNA 表达矩阵和相应的临床数据均来自公共数据库。对 m C 调控因子的单核苷酸变异和表达进行了估计。通过 Cox 回归构建了基于 m C 调控因子的预后模型。通过基因集富集分析评估这些分子的潜在功能。DNMT3A 突变是低级别脑胶质瘤中最常见的 m C 调控因子突变。NSUN3、TET2、TRDMT1、ALYREF、DNMT3B、DNMT1、NOP2 和 NSUN2 呈上调表达。构建了一个预后模型,对低级别脑胶质瘤的总生存率具有较强的预测能力。我们研究了 m C 调控因子在低级别脑胶质瘤中的表达和预后特征,为诊断和预后提供了生物标志物,并为低级别脑胶质瘤发病机制的研究提供了基础。