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在8q24的非编码单核酸多态驱动IDH1-突变质瘤的形成

Connor Yanchus^1,2, Kristen L Drucker³, Thomas M Kollmeyer³

¹Centre for Molecular and Systems Biology, Lunenfeld-Tanenbaum Research Institute, Mount Sinai Hospital, Toronto, ON M5G 1X5, Canada.

Science (New York, N.Y.)

|October 6, 2022

概括

一种常见的基因变异,rs55705857,显著增加了发生异酸脱酶 (IDH) 突变低度质瘤 (LGG) 的风险. 这种多态性影响基因表达,导致质瘤的发展,影响近一半的LGG患者.

科学领域:

遗传学
癌症学
分子生物学

背景情况:

建立遗传遗传变异与癌症风险之间的因果关系是复杂的.
单核酸多态性 rs55705857与异酸脱酶 (IDH) 突变低度质瘤 (LGG) 的风险增加密切相关.

研究的目的:

为了确定IDH突变LGG风险的因果基因变异.
阐明 rs55705857 导致质瘤发展的分子机制.

主要方法:

基因组分析以确定病因变异.
在细胞系和小鼠模型中进行功能研究以调查分子通路.
评估风险基因对增强剂活性和基因表达的影响.

主要成果:

已证实rs55705857是IDH突变LG的致病变体.
风险基因干扰了转录因子对特定大脑增强剂的结合,导致MYC表达增加.
在小鼠模型中,突变rs55705857位点加速LGG发育并增加瘤透率.

结论:

通过改变基因调节驱动LGG的发展.
这项研究揭示了基质瘤遗传倾向的关键机制,对大约40%的LGG患者来说是相关的.

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