人类基因调节进化是由调节元件功能在cis和trans中的分歧驱动的
Tyler J Hansen1, Sarah L Fong2, Jessica K Day1
1Department of Biochemistry, Vanderbilt University School of Medicine, Nashville, TN 37232, USA.
Cell genomics
|April 11, 2024
概括
物种之间的基因调节进化涉及当地cis和全球trans变化. 这项研究使用ATAC-STARR测序识别了成千上万种跨作用调节差异,揭示了它们与cis变化一起发挥的重要作用.
科学领域:
- 基因组学就是基因组学.
- 进化生物学 进化生物学
- 分子生物学分子生物学
背景情况:
- 基因调节分歧通过cis或trans作用的变化驱动物种进化.
- 识别跨作用的调节变化一直是进化研究中的一个重大挑战.
研究的目的:
- 开发和应用一种全面的方法,直接识别人类和 rhesus 之间的 cis 和 trans 分离的调节元素.
- 调查 cis 和 trans 元素之间序列分歧和功能的独特模式.
- 了解物种分歧中的cis和trans监管变化之间的相互作用.
主要方法:
- 测试用于与自我转录活性调节区域 (ATAC-STARR) 测序相结合的转化酶可访问的染色质.
- 进行了对人类和 rhesus macaque 淋巴细胞细胞之间的调节元件的比较分析.
- 进行了差异表达的转录因子的识别.
主要成果:
- 数以千计的cis-divergent调节元素被确定.
- 与cis元素相比,大约有1万个跨分离的调节元素被发现,与cis元素相比,它们呈现出明显的序列分离和功能模式.
- 不同表达的转录因子解释了约37%的转录差异,并且显示 cis 变化诱导了转录变化.
- 很大一部分 (67%) 的不同元素显示出 cis 和 trans 两种元素的变化.
结论:
- 跨作用调节差异在物种特异性差异中起着实质性的作用,无论是独立的还是与cis变化结合的.
- 这项研究强调了 cis 和 trans 调节演变之间的复杂相互作用.
- 这项工作提供了一种强有力的方法来剖析监管进化及其遗传基础.
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