自闭症谱系障碍中的De novo结构变异破坏了神经元基因的远程调节相互作用
Ketrin Gjoni1,2, Xingjie Ren3, Amanda Everitt1,2
1Gladstone Institute of Data Science and Biotechnology, San Francisco, CA 94158.
bioRxiv : the preprint server for biology
|November 22, 2024
概括
三维基因组折叠的破坏与自闭症谱系障碍 (ASD) 有关. 一个新的计算工具,SuPreMo-Akita,预测结构变异对基因调节的影响,优先考虑功能测试的候选人.
科学领域:
- 基因组学就是基因组学.
- 分子生物学分子生物学
- 计算生物学 计算生物学
背景情况:
- 三维基因组组织对于基因调节至关重要.
- 由结构变异 (SVs) 引起的基因组折叠的破坏,可能导致发育障碍.
- 实验测试SVs对它们对染色质结构和基因表达的影响是具有挑战性的.
研究的目的:
- 开发一种计算方法来预测SVs对基因组折叠的影响.
- 优先考虑可能导致发育障碍的SV,特别是自闭症谱系障碍 (ASD).
- 为了确定被破坏的cis-regulatory元素相互作用 (CREints) 作为ASD的潜在机制.
主要方法:
- 开发了一种加权评分方法,用于测量在调节元和促进体附近的染色质接触变化.
- 在SuPreMo-Akita软件中实现了该方法.
- 应用该工具来分析ASD患者及其未受影响的兄弟姐妹的de novo SVs (dnSVs).
主要成果:
- SuPreMo-Akita根据预测神经元调节相互作用的破坏对数百个dnsv进行了排名.
- 与未受影响的兄弟姐妹相比,来自ASD试验者的dnsV显示了假定的cis-regulatory元素相互作用 (CREints) 的更大破坏.
- 在同位素刺激神经元中验证了排名最高的位置,证实了预测的染色质接触干扰.
结论:
- 被破坏的基因组折叠是导致ASD的潜在遗传机制.
- SuPreMo-Akita软件提供了一个一般的策略,用于优先考虑预测会破坏监管相互作用的变体.
- 这种方法可以帮助识别各种组织的功能测试的因果变异.
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