长期阅读的测序揭示了口腔状细胞癌中的重复扩张和大型结构变异
Li Hu1, Jiaxun Zhang1, Zhuoyuan Zhang2,3
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, Sichuan 610041, China.
Genomics, proteomics & bioinformatics
|December 27, 2025
概括
这项研究揭示了口腔状细胞癌 (OSCC) 的新型结构变异 (SV),包括影响OBI1基因表达和细胞行为的重复扩张. 这些发现增强了对OSCC分子病原学的理解.
科学领域:
- 基因组学就是基因组学.
- 分子生物学分子生物学
- 癌症研究 癌症研究
背景情况:
- 以前的研究经常将口腔状细胞癌 (OSCC) 与其他头癌分组在一起,限制了OSCC特定的见解.
- 了解OSCC特有的结构变异 (SV) 对于破译其分子病原性至关重要.
研究的目的:
- 使用长读全基因组测序识别和表征OSCC特定的体质结构变异 (SVs).
- 阐明已识别的SVs对OSCC中基因表达和细胞功能的功能影响.
主要方法:
- 在16个配对的OSCC瘤和血液样本上进行了长读全基因组测序.
- 确定了高可信度的体质性SV和复发的简单重复扩张 (SREs).
- 利用基因淘汰实验来评估SREs对基因表达和细胞行为的功能后果.
主要成果:
- 发现了5775个高可信度的体质性SV,包括五个复发的SRE.
- 在45%的OSCC样本中发现了OBI1促进体中的SRE,显著降低了OBI1的表达,并在淘汰时损害了细胞的增殖和迁移.
- 确认11q13放大区域易受影响ANO1,FADD和CTTN表达的大型SV的影响,将这些SV与OSCC发展联系起来.
结论:
- 在OSCC的发展中,体性SV,特别是SRE和关键基因组区域的大型SV发挥着重要作用.
- OBI1促进体SRE是OSCC的一个子集中的关键驱动体,影响细胞功能.
- 这项研究提供了对OSCC背后的分子机制的更深入的理解.
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