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长读RNA测序使得肺腺癌中可转移元素的全长化学转录注释成为可能

Yang Li¹, Yahui Liu¹, Yingxin Xie²

¹Laboratory of Omics Technology and Bioinformatics, Frontiers Science Center for Disease-Related Molecular Network, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan, China.

|March 16, 2025

概括

可移植元素 (TE) 在肺癌中重新激活,形成驱动瘤进展的化学转录 (TCT). 长读测序揭示了这些TCT作为肺腺癌的潜在生物标志物和治疗点.

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:

可转移元素 (TE) 占人类基因组的近一半,并通过化学转录 (TCT) 的重新激活和形成与癌症进展有关.
短读测序技术在全面描述TCT的多样性和结构方面存在局限性,特别是涉及短间隔核元素 (SINEs) 或共同转录的TE的技术.

研究的目的:

利用全长cDNA测序来全面识别和量化肺腺癌 (LUAD) 中的TCT.
探索TCT与LUAD进展和临床结果的关联.
研究特定TCT在癌细胞行为中的功能作用.

主要方法:

利用基于纳米孔的全长cDNA测序来识别和量化19个LUAD细胞系中的TCT.
采用来自200名LUAD患者的短读RNA-seq数据用于TCT验证和关联研究.
进行细胞迁移和增殖试验,以评估特定TCT的功能影响.

主要成果:

在LUAD细胞系中发现了208个独特的TCT候选物,包括非转体TEs中的神秘促进/终结物.
确定了一种与LUAD进展显著相关的MIR_HKDC1相关的TCT.
发现TCT表达与LUAD患者的不良临床结果相关,这表明生物标志物的潜力.

结论:

长读序列有效地解开了LUAD中TCT的复杂格局,提供了全面的表征.
试验证实在癌症进展中具有潜在的调节作用,并作为LUAD预后的有前途的生物标志物.
这项研究开辟了针对性治疗和个性化治疗策略的途径,通过突出显示TCT作为生物标志物和瘤发生的治疗点.

关键词:

长时间读取RNA测序.肺部腺癌瘤是肺部腺癌.可转移的要素是可以转移的.

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