监管特征支持对3'UTR变体的解释
Lindsay Romo1, Scott D Findlay2, Christopher B Burge2
1Harvard Medical Genetics Training Program, Boston Children's Hospital, Boston, MA 02115, USA.
American journal of human genetics
|January 18, 2024
概括
在3'未翻译区域 (UTR) 中识别遗传变异是具有挑战性的. 我们的研究表明,调节元件的变异更有可能影响基因表达和表型,有助于变异解释.
科学领域:
- 遗传学 遗传学 是一个
- 分子生物学分子生物学
- 生物信息学是一种生物信息学.
背景情况:
- 确定3'未翻译区域 (UTR) 内遗传变异的临床意义是遗传研究中的一个重大挑战.
- 3' UTRs在基因调节中起着至关重要的作用,但这些区域的变异通常未得到充分研究.
- 现有的变异解释方法难以准确评估3' UTR变异的影响.
研究的目的:
- 综合分析3' UTR变异,并确定与临床影响相关的特征.
- 调查位于3' UTRs.内的监管元素中的变体的功能后果.
- 开发一种计算工具,用于预测3' UTR变异对基因表达和表型的影响.
主要方法:
- 在多个大规模数据集中分析3' UTR变异.
- 检查已知的调节元件中的变异,如RNA结合蛋白质基因,eCLIP峰值和microRNA结合位.
- 评估与替代多化和多A位点相关的地区的变异.
- 使用人口研究和ClinVar变异数据验证发现.
- 开发并将发现纳入RegVar软件工具.
主要成果:
- 位于调节元件 (RNA结合蛋白质基因,eCLIP峰值,microRNA位点) 中的变异与基因表达和表型变化相关的可能性高达16倍.
- 调节性基因的变异表明异位基因特异性蛋白质结合和异位基因特异性基因表达.
- 替代性聚基化异形区域和PolyA位点附近的变体更有可能影响基因表达和表型.
- 与良性变异相比,ClinVar中的致病性3' UTR变异在调节部位上显著丰富 (可能性高达20倍).
结论:
- 在3' UTRs的调控元素中的变异与改变的基因表达和临床表型密切相关.
- RegVar工具有效地整合了监管注释,以预测3' UTR变体的功能影响.
- 这种方法提高了对实验验证变异的优先考虑能力,并识别了个体中的致病变异,提高了诊断能力.
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