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Identification and analysis of lipid droplet-related proteome in the adipose tissue of grass carp (Ctenopharyngodon idella) under fed and starved conditions.
Comparative Biochemistry and Physiology D: Genomics & Proteomics ( IF 3 ) Pub Date : 2020-07-07 , DOI: 10.1016/j.cbd.2020.100710
Jing-Jing Tian 1 , Jun-Ming Zhang 2 , Er-Meng Yu 1 , Jin-Hui Sun 3 , Yun Xia 1 , Kai Zhang 1 , Zhi-Fei Li 1 , Wang-Bao Gong 1 , Guang-Jun Wang 1 , Jun Xie 1
Affiliation  

Fat accumulation in the mesenteric adipose tissue is a serious problem in grass carp (Ctenopharyngodon idella) culture. Lipid droplet-related proteins (LDRPs) are involved in the formation, degradation, and biological functions of lipid droplets. In this study, we aimed to provide reference proteomics data to study lipid droplet regulation in fish. We isolated LDRPs from the mesenteric adipose tissue of grass carp (1-year-old) after normal feeding and 7 days of starvation, and identified and analysed them using isobaric tags for relative and absolute quantitation (iTRAQ) technology. Short-term starvation had no significant effect on the body weight, condition factor, visceral index, hepatopancreas index, intraperitoneal fat index, adipose tissue triglyceride content, and adipocyte size of grass carp. Nine hundred and fifty proteins were identified and annotated using the Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) databases; they are involved in a variety of metabolic and signalling pathways, including amino acid, lipid, and carbohydrate metabolism, and the PI3K-Akt signalling pathway. There were 296 differentially expressed proteins (DEPs), with 143 up-regulated and 153 down-regulated proteins. Three proteins involved in triglyceride and fatty acid syntheses and two proteins involved in autophagy were up-regulated, and six proteins involved in lipid catabolism were down-regulated. These results indicate that under short-term starvation, lipid droplets in the adipose tissue of grass carp may maintain their shape by promoting fat production and inhibiting lipolysis, and autophagy may be one of the main strategies for coping with short-term energy deprivation.



中文翻译:

进食和饥饿条件下草鱼(Ctenopharyngodon idella)脂肪组织中与脂质滴相关的蛋白质组的鉴定和分析。

肠系膜脂肪组织中的脂肪积累是草鱼(Ctenopharyngodon idella)的一个严重问题。)文化。脂质小滴相关蛋白(LDRP)与脂质小滴的形成,降解和生物学功能有关。在这项研究中,我们旨在提供参考蛋白质组学数据,以研究鱼类中的脂质滴调节。在正常进食和饥饿7天后,我们从草鱼(1岁)的肠系膜脂肪组织中分离了LDRP,并使用等压标签对相对和绝对定量(iTRAQ)技术进行了鉴定和分析。短期饥饿对草鱼的体重,条件因子,内脏指数,肝胰脏指数,腹膜内脂肪指数,脂肪组织甘油三酸酯含量和脂肪细胞大小没有显着影响。使用基因本体论(GO)和《京都基因与基因组百科全书》(KEGG)数据库鉴定并注释了950种蛋白质。它们参与各种代谢和信号传导途径,包括氨基酸,脂质和碳水化合物的代谢,以及PI3K-Akt信号传导途径。存在296种差异表达的蛋白质(DEP),其中143种上调蛋白质和153种下调蛋白质。上调甘油三酸酯和脂肪酸合成的三种蛋白质,上调自噬的两种蛋白质,上调脂代谢的六种蛋白质。这些结果表明,在短期饥饿状态下,草鱼脂肪组织中的脂滴可能通过促进脂肪生成和抑制脂解作用而保持其形状,自噬可能是应对短期能量消耗的主要策略之一。和碳水化合物的代谢以及PI3K-Akt信号通路。存在296种差异表达的蛋白质(DEP),其中143种上调蛋白质和153种下调蛋白质。上调甘油三酸酯和脂肪酸合成的三种蛋白质,上调自噬的两种蛋白质,上调脂质分解代谢的六种蛋白质。这些结果表明,在短期饥饿状态下,草鱼脂肪组织中的脂滴可能通过促进脂肪生成和抑制脂解作用而保持其形状,自噬可能是应对短期能量消耗的主要策略之一。和碳水化合物的代谢以及PI3K-Akt信号通路。存在296种差异表达蛋白(DEP),其中143种上调蛋白和153种下调蛋白。上调甘油三酸酯和脂肪酸合成的三种蛋白质,上调自噬的两种蛋白质,上调脂质分解代谢的六种蛋白质。这些结果表明,在短期饥饿状态下,草鱼脂肪组织中的脂滴可能通过促进脂肪生成和抑制脂解作用而保持其形状,自噬可能是应对短期能量消耗的主要策略之一。上调甘油三酸酯和脂肪酸合成的三种蛋白质,上调自噬的两种蛋白质,上调脂质分解代谢的六种蛋白质。这些结果表明,在短期饥饿状态下,草鱼脂肪组织中的脂滴可能通过促进脂肪生成和抑制脂解作用而保持其形状,自噬可能是应对短期能量消耗的主要策略之一。上调甘油三酸酯和脂肪酸合成的三种蛋白质,上调自噬的两种蛋白质,上调脂质分解代谢的六种蛋白质。这些结果表明,在短期饥饿状态下,草鱼脂肪组织中的脂滴可能通过促进脂肪生成和抑制脂解作用而保持其形状,而自噬可能是应对短期能量剥夺的主要策略之一。

更新日期:2020-07-13
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