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识别带有体质拷贝数变化的驱动miRNAs,导致癌症中调节不良的ceRNA网络

Renjie Dou¹, Shaobo Kang¹, Huan Yang¹

¹College of Bioinformatics Science and Technology, Harbin Medical University, Harbin, 150081, Heilongjiang, China.

|November 23, 2023

概括

身体拷贝数变化 (SCNA) 在癌症中破坏了微RNA (miRNA) 网络. 这项研究确定了驱动性miRNA及其在乳腺癌亚型中的作用,揭示了癌症基因组解释的新致病机制.

科学领域:

基因组学就是基因组学.
癌症生物学癌症生物学
分子瘤学分子瘤学

背景情况:

微RNAs (miRNAs) 在癌症发育中至关重要,并调节竞争的内源RNA (ceRNA) 网络.
身体拷贝数变化 (SCNA) 可以破坏miRNA的表达并破坏ceRNA网络的平衡.
微RNASCNAs对癌症进展的具体影响仍然不完全理解.

研究的目的:

开发一种方法来识别受SCNAs影响的驱动miRNAs.
阐明这些驱动器miRNAs在癌症中的功能作用.
分析SCNA驱动的ceRNA网络及其对癌症特征的影响.

主要方法:

集成miRNA SCNA资料,miRNA-目标关系,以及表达数据 (miRNA,mRNA,lncRNA) 的整合.
该方法应用于813个TCGA乳腺癌 (BRCA) 样本.
基于已识别的驱动器miRNA和SCNA干扰模式构建动态ceRNA网络.

主要成果:

鉴定了29个驱动器miRNAs,其SCNAs影响其表达和目标调节.
在miRNA介导的ceRNA网络中发现了三种不同的SCNA干扰模式.
一种新的BRCA亚型的表征与8q24染色体上四种特定miRNAs (例如,has-miR-30d-3p) 的放大有关,与预后不佳和标志性功能障碍有关.

结论:

开发的方法有效地识别了驱动器miRNA及其SCNA驱动的功能.
这些发现提供了对癌症基因组解释和致病机制的见解.
驱动器miRNASCNAs在调节癌症特征方面表现出癌症特异性的作用.

关键词:

驱动器miRNAss可以使用.调节失调是一种失调.预测预后预测预测实体副本编号的改变 ceRNA 网络的 ceRNA 网络

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