Unraveling molecular mechanistic differences in liver metabolism between lean and fat lines of Pekin duck (Anas platyrhynchos domestica): A proteomic study

文献类型： 外文期刊

第一作者： Zheng, Aijuan

作者： Zheng, Aijuan;Chang, Wenhuan;Zhang, Shu;Cai, Huiyi;Chen, Guilan;Lou, Ruiying;Liu, Guohua;Hou, Shuisheng

作者机构：

关键词： 2-DE;Duck meat;Liver;Pekin duck;Proteome

期刊名称：JOURNAL OF PROTEOMICS （ 影响因子：4.044； 五年影响因子：4.02 ）

ISSN：

年卷期：

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收录情况： SCI

摘要： Duck is one of the major poultry meat sources for human consumption. To satisfy different eating habits, lean and fat strains of Pekin ducks have been developed. The objective of this study was to determine the molecular mechanistic differences in liver metabolism between two duck strains. The liver proteome of the Pekin duck lines was compared on days 1, 14, 28, and 42 posthatching using 2-DE based proteomics. There was a different abundance of 76 proteins in the livers of the two duck lines. Fat ducks strongly expressed proteins related to pathways of glycolysis, ATP synthesis, and protein catabolism, suggesting enhanced fat deposition rather than protein retention. In contrast, highly expressed proteins in lean ducks improved protein anabolism and reduced protein catabolism, resulting in an enhancement of lean meat deposition. Along with the decrease in fat deposition, the immune system of the lean duck strain may be enhanced by enhanced expression of proteins involved in stress response, immune defense, and antioxidant functions. These results indicate that selection pressure has shaped the two duck lines differently resulting in different liver metabolic capacities. These observed variations between the two strains at the molecular level are matched with physiological changes in growth performance and meat production. This information may have beneficial impacts in areas such as genetic modification through the manipulation of target proteins or genes in specific pathways to improve the efficiency of duck meat production. Biological significance: The objective of this study was to unravel molecular mechanistic differences in liver metabolism between lean and fat Pekin duck (Anas platyrhynchos domestica) strains. There was a different abundance of 76 proteins in the livers of the two duck lines. Enhanced protein expression in the fat ducks related to pathways of glycolysis, ATP synthesis and protein catabolism suggesting increased fat deposition rather than protein retention. In contrast, highly expressed proteins in the lean ducks facilitated protein deposition by increasing protein anabolism and reducing protein catabolism to enhance the lean meat percentage. Along with the decrease of fat deposition, the immunity of lean duck appeared to be enhanced by increased expression of proteins involved in stress response, defense and antioxidant function. This study provides potential target proteins or genes for further functional analysis and genetic manipulation to increase the efficiency of duck meat production and help satisfy the global demand for poultry meat.

分类号： Q51

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