DNA甲基化使得巨型病毒在动物相对的动物中反复内源化
Luke A Sarre1, Iana V Kim2, Vladimir Ovchinnikov1
1School of Biological and Behavioural Sciences, Queen Mary University of London, London, UK.
Science advances
|July 12, 2024
概括
5-甲基细胞素 (5mC) 表观遗传标记使得前列动物Amoebidium appalachense中的病毒DNA插入沉默. 这一发现揭示了5mC.
科学领域:
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
- 基因组学就是基因组学.
- 亲生组织学 亲生组织学 亲生组织学
背景情况:
- 5-甲基细胞氨酸 (5mC) 是一种关键的表观遗传沉默机制,可以控制真核生物中的基因组寄生虫.
- 5mC的保留和基因组后果在不同的血统中尚未完全理解.
- 5mC已经进化出了超越寄生虫控制的复杂基因调节作用.
研究的目的:
- 为了研究5-甲基细胞素 (5mC) 在与动物相关的原生虫Amoebidium appalachense中的作用和基因组后果.
- 了解5mC保留的原因及其对真核生物基因组的影响.
- 探索病毒DNA,5mC和真核生物基因组进化之间的关系.
主要方法:
- 进行比较基因组学以分析Amoebidium appalachense中的甲基化模式.
- 基因组测定和抑制剂研究以确定5mC的功能.
- 分析病毒插入及其对宿主蛋白质组的贡献.
主要成果:
- 亚帕拉菌表现出转子和基因体甲基化,类似于无脊椎动物和植物.
- 阿米中的超甲基化区域主要来自内源化巨型病毒插入,占蛋白质组的14%.
- 已经证明,5-甲基细胞氨酸 (5mC) 可以使这些病毒插入保持沉默.
- 多态病毒在隔离物中的插入表明病毒获取和基因组集成的动态过程.
结论:
- 5-甲基细胞氨酸 (5mC) 对于新获得的病毒DNA在真核生物基因组中的稳定共存至关重要.
- 亚帕拉菌 (Amoebidium appalachense) 作为一种独特的模型,用于研究病毒DNA的整合及其对真核生物基因组进化的影响.
- 这项研究揭示了真核DNA通过病毒内源化和表观遗传控制的混合起源.
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