在保存的基因调节网络中的进化创新,是 Bilateria 生物矿物化骨的基础
Yitian Bai1, Yue Min1, Shikai Liu1
1Key Laboratory of Mariculture, Ministry of Education, Ocean University of China, Qingdao 266003, China.
Molecular biology and evolution
|January 20, 2026
概括
这项研究揭示了一种双相基因调节程序,用于中的贝形成,使用古代因素和动态色素. 这个框架解释了生物矿物化的多样性如何在动物之间演变.
科学领域:
- 进化发育生物学 进化发育生物学
- 基因组学和表观遗传学
- 海洋无脊椎动物生物学
背景情况:
- 生物矿物化骨在动物中演变趋同,表现出多样化的结构.
- 生物矿物化的基因调节网络 (GRNs) 的进化起源尚不清楚.
研究的目的:
- 研究双 mollusc Crassostrea nippona 的发育转录和染色体动态.
- 阐明基因调节网络的基因形成的基础.
- 了解生物矿物化GRNs的进化起源.
主要方法:
- 转录组学的全面发展概况.
- 在外形成过程中分析染色体动力学.
- 在Lophotrochozoa和Echinodermata之间进行比较基因组分析.
主要成果:
- 确定了幼虫和成人的贝形成的双相调节程序.
- 证明了古代转录因子和动态染色质重塑的协调活动.
- 在lophotrochozoan祖先中发现了幼虫外骨形成的保存工具包的证据.
- 观察到lophotrochozoans和皮动物之间对于骨架形成的有限的调节性保护,尽管共享祖先调节者的异常激活.
结论:
- 提出了一个等级模型,其中动态染色质将不断变化的效应物与保存的调节器脱,使模块化创新成为可能.
- 表观遗传动力学是生物矿物化的进化保护和新奇性的桥梁.
- 通过双边的组合性监管演变提供了一个理解独立生物矿物化演变的框架.
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