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肝转录组显示了大珀 (Seriola dumerili) 的急性低氧耐受和不耐受个体之间的差异
Duo Li1, Yang Yang1, Tong Wang1
1State Key Laboratory of Biocontrol, Institute of Aquatic Economic Animals and Guangdong Province Key Laboratory for Aquatic Economic Animals, School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, China.
Animals : an open access journal from MDPI
|September 9, 2023
概括
研究了大珀 (Seriola dumerili) 肝脏对急性缺氧的反应. 耐受性鱼类表现出改变的基因表达,包括上调糖运输和下调脂质合成,有助于生存.
科学领域:
- 水产养殖是水产养殖的一种方式.
- 鱼类生理学 鱼类生理学
- 分子生物学分子生物学
- 压力反应应激反应
背景情况:
- 急性缺氧是水产养殖的主要压力因素,导致商业重要物种如大珀 (Seriola dumerili) 的重大损失.
- 大珀对缺氧的不耐受性阻碍了由于对大规模死亡的易感性而导致的种植进度.
- 了解低氧耐受性分子机制对于改善水产养殖实践至关重要.
研究的目的:
- 为了研究大珀的肝脏中急性缺氧耐受性背后的分子机制.
- 为了比较 hypoxia-tolerant (HT) 和 hypoxia-intolerant (HS) 之间的转录变化,更大的amberjack组.
- 确定参与大珀对急性缺氧反应的关键基因和途径.
主要方法:
- 使用RNA测序 (RNA-Seq) 对来自HT和HS大amberjack群的肝脏样本进行比较转录组分析.
- 模拟急性低氧环境以诱导压力.
- 差异基因表达分析以确定显著的转录变化.
主要成果:
- 在HT和HS群组中发现了829个差异表达基因 (DEGs) (374个在HT上调,455个在HT下调).
- 在HT组中观察到糖运输基因 (例如,slc2a5) 的上调和葡萄糖生成/脂质合成基因 (例如,pgp,aacs) 的下调.
- 抗氧化剂相关基因odc1的下调,NF-kB通路的激活,以及HT组中观察到的亡/自基因 (例如,endog,hm13,casp6) 的下调.
结论:
- 这项研究阐明了肝脏的调节机制,以应对大珀的急性缺氧压力.
- 鉴定的分子参与者为低氧耐受性途径提供了洞察力,包括代谢转变和抗压力.
- 这些发现为预防缺氧引起的死亡率和减少大珀鱼水产养殖的经济损失提供了技术支持.
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