第三代测序揭示了表观基因组在三种深海多元体中的适应性作用
Maeva Perez1,2,3, Oluchi Aroh4, Yanan Sun5
1Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou, China.
Molecular biology and evolution
|July 26, 2023
概括
这项研究揭示了深海虫中的DNA甲基化模式,发现它影响了基因表达和适应极端环境. 这些表观遗传特征对于了解深海通风口和漏中的生命至关重要.
科学领域:
- 海洋生物学 海洋生物学
- 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.
背景情况:
- 在无脊椎动物,特别是类动物中,DNA甲基化作用在很大程度上是未知的.
- 深海的通风口和透口可以容纳独特的多基质物种,其生物机制尚不清楚.
研究的目的:
- 执行第一个全基因组的DNA甲基化调查在深海多元体.
- 研究DNA甲基化在基因表达和适应极端环境中的作用.
主要方法:
- 高质量的基因组组合,包括三种深海多叶虫: *Paraescarpia echinospica*, *Ridgeia piscesae* 和 *Paralvinella palmiformis*.
- 使用牛津纳米孔测序数据的DNA甲基化推断.
- 对转录基因数据的分析,以将DNA甲基化与基因表达相关联.
主要成果:
- 这些基因组编码了必不可少的DNA甲基化酶,表现出类似于其他无脊椎动物的马赛克甲基组.
- 发现基因体甲基化增强了家庭基因表达,而促进物甲基化则充当了沉默机制.
- 在这些物种中,DNA甲基化似乎没有抑制可转移元素的活性.
- 与恒常性相关的基因中保存的表观遗传特征表明,在适应高水静压方面发挥了作用.
结论:
- 基因甲基化在深海多胞体中存在并具有功能,在基因调节中发挥作用.
- 表观遗传机制,特别是DNA甲基化,可能有助于这些生物适应极端深海条件.
- 这项研究提供了对海洋无脊椎动物DNA甲基化的演化和功能的关键见解.
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