与冬眠相关的保存的非编码Cis元素调节了小鼠的代谢和行为适应
Susan Steinwand1, Cornelia Stacher Hörndli1, Elliott Ferris1
1Department of Neurobiology, University of Utah; Salt Lake City, 84105, USA.
bioRxiv : the preprint server for biology
|July 9, 2024
概括
冬眠者中的融合进化揭示了调节新陈代谢的关键 cis 元素. 这些遗传元素影响脂肪和肥胖 (Fto) 基因表达,影响新陈代谢控制和行为.
科学领域:
- 基因组学就是基因组学.
- 进化生物学 进化生物学
- 代谢研究研究 代谢研究
背景情况:
- 哺乳动物的冬眠涉及复杂的生理适应.
- 保存的cis元素在基因调节和进化中起着至关重要的作用.
- 脂肪质量和肥胖 (Fto) 位点与代谢调节有关.
研究的目的:
- 阐明保存的cis元素在哺乳动物冬眠进化中的功能作用.
- 研究cis元素对基因表达和代谢控制的影响.
- 了解特定 cis 元素的行为和肥胖效应.
主要方法:
- 基因组分析以确定在冬眠者中发生的收变化的拓相关域 (TAD).
- 在小鼠中进行基因淘汰研究,以评估cis元素功能.
- 跨冬眠状态和饮食挑战的表型概况.
主要成果:
- 确定了TADs,包括Fto位点,在冬眠者中具有显著的融合基因组变化.
- 证明冬眠相关的cis元素调节Fto,Irx3和Irx5基因表达,影响下游基因.
- 发现了 cis 元素在不同的冬眠阶段和不同的饮食中对代谢控制的独特作用.
- 展示了一个cis元素对瘦肉表型和食行为的影响.
结论:
- 冬眠者中的融合进化突出了哺乳动物代谢控制的功能遗传机制.
- 特定的cis元素对于调节新陈代谢,肥胖和行为至关重要.
- 这些发现为冬眠和代谢适应的遗传基础提供了洞察力.
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