涉及儿童脑瘤转录组的生殖系结构变异包括与疾病相关的和与祖先相关的基因
Fengju Chen1, Yiqun Zhang1, Luis F Paulin2
1Dan L. Duncan Comprehensive Cancer Center, Baylor College of Medicine, Houston, TX, 77030, USA.
Acta neuropathologica communications
|August 21, 2025
概括
细菌系结构变异 (SVs) 在儿童脑瘤中影响基因表达. 这些发现揭示了中枢神经系统瘤中的遗传多样性和与癌症相关的基因.
科学领域:
- 基因组学
- 癌症生物学
- 神经瘤学
背景情况:
- 生殖系结构变异 (SVs) 显著影响基因转录和遗传多样性.
- 系统地对生殖系SV及其对基因的影响进行分类至关重要,特别是在儿童大脑/中枢神经系统瘤中.
研究的目的:
- 鉴定儿童脑瘤中由于生殖系SVs的接近而与差异性表达相关的基因.
- 系统地对不同患者群体和瘤类型的基因表达产生影响.
主要方法:
- 在1430名儿童大脑/中枢神经系统瘤患者的综合RNA和全基因组测序.
- 在1 Mb的基因内分析了复发性生殖系SV断点,以寻找与瘤中差异性基因表达的显著关联.
主要成果:
- 数以百计的基因表达变化与复发的生殖系SV断点有关.
- 关联包括基因删除,干扰和 cis 调节性改变.
- 罕见的SVs影响了DNA修复和线粒体基因;特定的基因表达模式与祖先和生存有关.
结论:
- 确定了由生殖系SVs驱动的儿科脑瘤的表型变异类别.
- 突出了生殖系SVs在改变基因表达和潜在的癌症发展中的作用.
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