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长读数测序识别了复杂的结构变异景观和粘膜皮肤类癌瘤中反复发生的TERT重排

Elizabeth Gensterblum-Miller¹, Apurva Bhangale², Dana Al Majid²

¹Department of Otolaryngology - Head and Neck Surgery, University of Michigan, Ann Arbor, MI, USA; Cellular and Molecular Biology Program, University of Michigan, Ann Arbor, MI, USA.

|November 16, 2024

概括

这项研究揭示了粘膜腺癌 (MEC) 中复杂的遗传重组,包括新的CRTC1::MAML2和MAML2-MYBL1融合. 经常性的TERT重组和放大是MEC瘤发生的关键驱动因素.

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:

粘膜腺癌 (MEC) 是一种普遍存在的唾液腺恶性瘤.
在约60%的MEC中发现了CRTC1/3-MAML2融合,与病原发生有关.
这些合并和其他MEC变化背后的结构机制尚未完全理解.

研究的目的:

阐明在MEC中推动CRTC1::MAML2融合的结构机制.
确定新的遗传变异及其在MEC发展中的作用.
调查MEC TERT变化的功能意义.

主要方法:

多原子和长读基因组测序.
针对TERT位点的自定义测序.
异构体序列化异构体序列化.
TERT基因淘汰实验. 基因淘汰实验. 基因淘汰实验.

主要成果:

发现了一个复杂的重组,导致CRTC1::MAML2和MAML2-MYBL1的融合.
在92%的MEC样本中识别反复发生的TERT重组和放大.
在MEC细胞系中,TERT knockdown降低了细胞存活率,证实了它的致癌作用.
染色体的证据导致MEC的结构变化.

结论:

复杂的染色体变机制是MEC结构变化的基础.
经常发生的TERT变化是MEC瘤发生的关键驱动因素.
MYBL1可能在唾液腺癌中起重要作用.
对MEC病原和潜在治疗点的新见解.

关键词:

在CRTC1中,在MAML2中使用MAML2.在MECMEC中,MEC是MEC.在NOTCH2中.结构变化的结构变化.这就是为什么 TERTTT.转移转移转移转移转移

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