大菱鲆29个脂质代谢相关基因的组织表达
作者:
作者单位:

作者简介:

通讯作者:

中图分类号:

Q 786;S 917.4

基金项目:

中国水产科学研究院黄海水产研究所基本科研业务费专项(20603022022004,2020TD48)


Tissue distribution of transcription for 29 lipid metabolism-related genes in turbot (Scophthalmus maximus)
Author:
Affiliation:

Fund Project:

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
  • |
  • 文章评论
    摘要:

    不同鱼类的脂肪组织分布模式具有高度多样性。大菱鲆具有相对特殊的脂质储存模式;鳍条附近皮下脂肪组织是其重要的脂肪存储部位。为了更好地了解大菱鲆的脂质代谢生理,本实验初步研究了29个脂质代谢相关基因在大菱鲆体内的组织表达,这些基因参与了脂肪生成、脂肪酸β氧化、甘油酯的生物合成和水解、脂质运输以及相关的脂代谢转录调控过程。从30尾鱼(10尾混样作为一个重复)中采集眼、鳃、脑、皮肤、肌肉、肝脏、胃、肾脏、脾脏、心脏、前肠、幽门盲囊、后肠、盲肠和脂肪等共15个组织样本进行qRT-PCR分析。结果显示,肠和脑中脂肪生成基因表达量高,肝脏和肌肉脂肪生成基因表达量低。肠内大部分载脂蛋白和脂质代谢相关转录因子的基因表达水平也较高。肌肉中脂肪酸β氧化相关基因的表达水平较低。细胞内甘油酯酶在脑、眼和心脏中高表达。研究表明,在大菱鲆体内,肠道可能不仅是脂质摄取的场所,也是大菱鲆体内重要的脂肪代谢器官。本研究为进一步探讨大菱鲆脂代谢特征及探索不同储脂类型鱼类中脂肪代谢的多样性提供了基础数据,也将有助于在分子水平上进一步研究鱼类的脂质代谢调节。

    Abstract:

    The distribution patterns of adipose tissue in different fish species are highly diverse. Turbot (Scophthalmus maximus) has a special lipid storage pattern, storing lipid predominantly in the subcutaneous tissue around the fin. In order to better understand the lipid physiology of fish storing lipid in subcutaneous tissue, this study preliminarily investigated the tissue distribution of 29 lipid metabolism-related genes in S. maximus, which are involved in lipogenesis, fatty acid oxidation, biosynthesis and hydrolysis of glycerides, lipid transport, and relevant transcription regulation. Fifteen tissue samples including eye, gill, brain, skin, muscle, liver, stomach, kidney, spleen, heart, foregut, pyloric caeca, hindgut, caecum and subcutaneous adipose tissue around the fin were collected from 30 fish for qRT-PCR analysis (10 fish as a replicate pool). In the PCR experiment, EF1α and RPL13 were used as the reference genes. The amplification efficiency for all primers, which was estimated by standard curves based on dilution series of target template, was within 95%-105%, and the coefficients of linear regression (R2) were ?0.99. A quantitative thermal cycler (Roche LightCycler 96, Basel, Switzerland) was used for the real-time qPCR, and the reaction system and program followed the formal procedures in our laboratory. Each sample was run in triplicate. The mRNA levels were expressed according to the 2-ΔΔCT method. For each gene, the mRNA level in the tissue with the lowest expression was standardized to be 1.0, and the gene expression levels of other tissues were expressed as folds of 1.0. The results showed that the intestine and brain had high transcription of lipogenic genes such as ACACβ, FAS and SCD1, whereas the liver and muscle had low expression levels of these genes. The intestine also had the highest transcription levels of most apolipoproteins such as ApoA1, ApoA4, ApoB100, and ApoEα and lipid metabolism-related transcription factors such as PPARα1, PPARγ, SREBP1, LXR-α, and HNF4α. The transcription of fatty acid β oxidation-related genes, ACOX1, ACOX3, and CPT1, was low in the muscle. The intracellular glyceridases, HSL, DAGLα, and MGLL, were highly transcribed in the brain, eye, and heart. In conclusion, in S. maximus, the intestine may not only be the place for lipid uptake, but also an important lipogenic organ in S. maximus. The lipid metabolism in the subcutaneous adipose tissue of S. maximus is not active, which may be due to the fact that the subcutaneous tissue is the main organ for lipid storage in S. maximus. This study will help to further elucidate the regulation of lipid metabolism in fish at the molecular level.

    参考文献
    相似文献
    引证文献
引用本文

刘国旭,孟晓雪,马强,卫育良,梁萌青,徐后国.大菱鲆29个脂质代谢相关基因的组织表达[J].水产学报,2024,48(3):039103

复制
分享
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:2022-03-21
  • 最后修改日期:2022-08-26
  • 录用日期:2022-12-22
  • 在线发布日期: 2024-03-19
  • 出版日期: