在人类皮层发育过程中质疑HAQERs的调节功能
Yashodara Abeykoon1,2,3, Natalie Dzikowski4,5, Yanting Luo4,6
1Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, University of California, San Francisco, San Francisco, CA, USA.
bioRxiv : the preprint server for biology
|December 11, 2025
概括
人类祖先快速进化的区域 (HAQERs) 驱动人类大脑的进化. 基因转换和选择创造了监管创新,影响了与神经系统疾病相关的基因.
科学领域:
- 基因组学就是基因组学.
- 进化生物学 进化生物学
- 神经科学是一个神经科学.
背景情况:
- 基因调节元素对于人体特异性特征至关重要,如皮层扩张.
- 塑造这些元素及其目标基因的突变过程仍然不清楚.
- 人类祖先快速进化的区域 (HAQER) 代表着快速进化的基因组区域.
研究的目的:
- 研究HAQERs的调节功能和进化起源.
- 了解它们在人类大脑皮层发育中的作用.
- 识别HAQERs影响的目标基因.
主要方法:
- 在正在发育的人类皮质中确定了50个具有可访问色素的HAQER.
- 利用CRISPRi的晶状病毒载体将HAQER与目标基因联系起来.
- 分析了CpG的增加和人类特异性的表观遗传学标记.
主要成果:
- 发现了107个具有显著CpG增长的HAQER,称为HAQER CpG信标.
- 在HAQER进化中发现了GC偏差基因转换 (gBGC) 和选择的证据.
- 识别了HAQER CpG信标,这些信标与涉及神经疾病的基因相关 (CHL1,DPP10).
结论:
- 黑客及其目标基因被揭示出来.
- 一个模型表明gBGC和选择驱动固定监管CpG变体.
- 这个过程有助于人类皮质的监管创新.
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