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Updated: Mar 2, 2026

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在小鱼 (Scomber japonicus) 中使用具有成本效益的向双硫酸盐测序的淋腺素基因的组织和成熟特异性DNA甲基化动态
Mariel Galotta1, Yukiko Ogino2, Naoki Nagano3
1Laboratory of Marine Biology, Faculty of Agriculture, Kyushu University, Fukuoka, Japan.
Scientific reports
|March 1, 2026
概括
表观遗传调节会影响鱼类的繁殖. 淋巴激素基因 (GtH) 中的DNA甲基化模式随着鱼的繁殖成熟而发生变化,影响基因表达和繁殖性能.
科学领域:
- * 生殖生物学 生殖生物学
- * 表观遗传学 是一种表观遗传学.
- * 鱼类生理学 鱼类生理学
背景情况:
- * 鱼类的繁殖是由荷尔蒙路径控制的,表观遗传学可能会调节像淋巴激素 (GtHs) 这样的繁殖基因.
- *了解DNA甲基化在成熟期间GtH表达中的作用对于评估对鱼类繁殖的环境影响至关重要.
- (Scomber japonicus) 在生态和经济上都很重要,因此提高生殖能力是优先考虑的.
研究的目的:
- * 在幼成熟过程中,研究淋巴激素促进体 (fshb和 lhb) 中的DNA甲基化模式.
- * 分析特定于组织和成熟的甲基化动态及其与基因表达的相关性.
- *通过体外试验验证甲基化在基因调节中的功能作用.
主要方法:
- *优化的向二硫酸盐测序 (BS-seq) 协议,用于对2880个DNA甲基化标进行有效分析.
- *用于基因表达分析的逆转录定量聚合酶连锁反应 (RT-qPCR).
- *报告者在培养细胞中进行测试,以功能验证 lhb 促进剂活性.
主要成果:
- * 在fshb和 lhb观察到特定于组织和成熟的DNA甲基化模式.
- * Fshb促进物甲基化在淋巴体和垂体中有所不同,在不成熟的淋巴体和成熟的垂体中甲基化较低.
- *Lhb基因体甲基化在成熟的垂体中较高,体外测试在 lhb促进体中发现了潜在的沉默元件.
- *DNA甲基化酶 (DNMTs和TETs) 的表达随着成熟而变化,这表明与生殖发育相关的表观遗传调节.
结论:
- *DNA甲基化表现出鱼类中的淋巴激素基因的动态,成熟特异性调节.
- *优化目标BS-seq有效识别了与鱼繁殖发育相关的甲基化变异.
- *这些发现提高了对控制鱼类生殖生理和基因表达的表观遗传机制的理解.
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