扩大受威尔姆斯瘤复发遗传变化影响的参与者的范围
Sara Ciceri1, Alessia Bertolotti2, Annalisa Serra3
1Predictive Medicine: Molecular Bases of Genetic Risk, Department of Experimental Oncology, Fondazione IRCCS Istituto Nazionale dei Tumori di Milano, Milan, Italy.
iScience
|September 12, 2024
概括
对复发的威尔姆斯瘤 (WT) 的遗传分析揭示了对瘤进展的新见解. 许多复发的WT病例显示DNA修复和染色体调节基因的异常,表明潜在的治疗点.
科学领域:
- 遗传学 是一个遗传学.
- 儿科瘤学 儿科瘤学
- 分子生物学分子生物学
背景情况:
- 威尔姆斯瘤 (WT) 遗传学,特别是在复发病例中,仍然不完全理解.
- 以前的研究表明SIX1,微RNA处理基因和MYCN网络在WT复发中的作用.
- 除了这些初步发现之外,关于复发性WT更广泛的遗传景观的数据有限.
研究的目的:
- 通过使用综合基因组,研究复发威尔姆斯瘤 (WT) 的遗传基础.
- 识别导致WT复发的新型分子途径和遗传异常.
- 探索向治疗的潜力和对WT患者的基因测试的影响.
主要方法:
- 大约5000个基因的全外体序列测序在28名复发性WT患者身上进行.
- 患者包括10例新病例和18例先前分析的病例,其中排除了SIX1和microRNA处理基因.
- 分析的重点是识别与DNA损伤,修复和染色质调节相关的基因中的遗传变异.
主要成果:
- 影响DNA损伤预防和修复基因的遗传变异在42.9% (12/28) 的复发性WT患者中被确定.
- 在21.4% (6/28) 的病例中发现了染色体修饰和调节基因的变异.
- 生殖系异常,主要是DNA损伤修复基因,令人惊地普遍存在,在46.4% (13/28) 的患者中发现.
结论:
- 复发性WT的遗传场景比以前想象的要广泛,涉及DNA修复和染色体调节途径.
- 识别这些分子通路可能为针对性治疗在复发的威尔姆斯瘤的途径.
- 生殖线异常的高频率表明,对所有被诊断为WT的儿童进行常规基因检测.
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