整合性奥米克揭示了快速演变的调节序列,驱动着灵长类大脑进化.
Xiao-Lin Zhuang1,2, Jin-Jin Zhang1,2, Yong Shao1,2
1State Key Laboratory of Genetic Resources and Evolution, Kunming Natural History Museum of Zoology, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, Yunnan, China.
Molecular biology and evolution
|July 26, 2023
概括
研究人员探索了推动灵长类大脑进化的遗传变化. 他们确定了调节序列和BMP7基因是灵长类大脑发育和人类认知进化的关键因素.
科学领域:
- 进化生物学是进化的生物学.
- 基因组学就是基因组学.
- 神经科学是一个神经科学.
背景情况:
- 灵长类动物的大脑扩张支了增强的认知能力.
- 这种大脑进化的遗传驱动因素在很大程度上仍未被探索.
研究的目的:
- 为了研究从祖先灵长类动物到人类的大脑基因的进化变化.
- 识别有助于灵长类大脑进化的新型遗传元素.
主要方法:
- 大规模的比较基因组,转录基因组和表观基因组分析.
- 灵长类动物和非灵长类动物大脑之间的单细胞和批量转录组数据的比较.
- 在小鼠胚胎皮质的子宫内电穿孔.
主要成果:
- 观察到大脑表达基因的调节序列的快速变化,特别是在Simiiformes祖先.
- 灵长类动物特定的调节序列可能会控制灵长类动物大脑中的高基因表达.
- 灵长类动物特异性基因BMP7被招募来调节灵长类动物心室区的神经元增殖.
结论:
- 这项研究提供了基因和灵长类大脑进化中的调节性变化的全面目录.
- 鉴定出基因元素对于理解人类大脑进化和遗传性疾病至关重要.
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