华北农学报 ›› 2025, Vol. 40 ›› Issue (6): 223-230. doi: 10.7668/hbnxb.20195968

• 畜牧·水产·兽 • 上一篇    下一篇

FAD3B转基因小鼠肌肉能量代谢的泛素化蛋白组学研究

杜新宇, 郭云鹏, 陈卓, 杨欣月, 李新, 居佳雯, 郭益文   

  1. 天津农学院 动物科学与动物医学学院,天津市农业动物繁育与健康养殖重点实验室,天津 300384
  • 收稿日期:2025-03-28 出版日期:2025-12-31
  • 通讯作者:
    郭益文(1989—),女,内蒙古通辽人,讲师,博士,硕士生导师,主要从事动物分子育种和基因功能挖掘研究。
  • 作者简介:

    杜新宇(2004—),女,天津人,主要从事生物信息研究。

  • 基金资助:
    天津市教委科研计划项目(2020KJ089); 天津市高等学校大学生创新创业训练计划项目(202210061035)

Ubiquitinated Proteomic Study of Muscle Energy Metabolism of FAD3B Transgenic Mice

DU Xinyu, GUO Yunpeng, CHEN Zhuo, YANG Xinyue, LI Xin, JU Jiawen, GUO Yiwen   

  1. School of Animal Science and Animal Medicine,Tianjin Agricultural College,Tianjin Key Laboratory of Agricultural Animal Breeding and Healthy Farming,Tianjin 300384,China
  • Received:2025-03-28 Published:2025-12-31

摘要: 植物体内的FAD3基因是调控多不饱和脂肪酸转化的关键基因,在能量代谢调控方面起重要作用。为了研究FAD3B对小鼠肌肉能量代谢的影响,分别选取FAD3B转基因小鼠(MF)和野生型小鼠(MW)分离腿肌并提取总蛋白,对蛋白样品定性定量检测,采用LC-MS/MS强阳离子柱分离肽段,获得原始质谱数据。利用质谱分析软件处理数据,选取峰值显著的肽段蛋白形成数据集,用转基因小鼠和野生型小鼠的蛋白样品数据做出聚类热图后进行观察分析,再对样品进行生物统计分析和生物信息及功能预测分析,筛选并检测出受FAD3B调控的发生泛素化修饰且与小鼠肌肉能量代谢有关的候选靶蛋白。结果表明:共筛选出180个差异泛素化肽段,且富集于65个蛋白之中。其中,有7个上调肽段富集到了7个蛋白中,有54个下调肽段富集到了31个蛋白中。对所有富集了差异泛素化肽段的靶蛋白进行GO分析、KEGG分析与STRING分析,发现多数靶蛋白与糖酵解、肌肉收缩、蛋白质合成和分解代谢等途径有关。综上,FAD3B基因的外源转入,使得小鼠体内与细胞结构组分、肌肉生长发育、调控能量代谢相关蛋白的泛素化修饰水平发生改变,证明了其除了调控多不饱和脂肪酸的转化外,还可能通过改变关键蛋白的泛素化修饰水平,参与小鼠骨骼肌的生长发育过程,为FAD3B基因调控小鼠骨骼肌生长发育的机制研究提供了新的理论依据与分子靶点。

关键词: 小鼠, FAD3基因, 泛素化蛋白质组学, 泛素化, 生信分析, 肌肉能量代谢

Abstract:

The FAD3 gene in plants plays a crucial role in regulating polyunsaturated fatty acid conversion and energy metabolism.To investigate the impact of FAD3B on muscle energy metabolism in mice,leg muscles were isolated from FAD3B transgenic mice (MF) and wild-type mice (MW),followed by total protein extraction.Protein samples were qualitatively and quantitatively analyzed,and peptides were separated via LC-MS/MS using a strong cation exchange column to obtain raw mass spectrometry data.The data were processed using mass spectrometry software,and a peptide-protein dataset with significant peaks was selected for cluster heatmap visualization to compare MF and MW protein samples.Subsequently,biostatistical and bioinformatics analyses,including functional prediction,were performed to identify candidate target proteins regulated by FAD3B that were ubiquitinated and associated with muscle energy metabolism.The results revealed 180 differentially ubiquitinated peptides enriched in 65 proteins.Among these,seven upregulated peptides were enriched in seven proteins,while 54 downregulated peptides were enriched in 31 proteins.GO analysis,KEGG analysis and STRING analysis were performed on all target proteins enriched with differentially ubiquitinated peptides,and it was found that most of the target proteins were related to glycolysis,muscle contraction,protein synthesis and catabolism.In conclusion,exogenous FAD3B gene transfer alters ubiquitination modification levels in cellular structural components,muscle development,and energy metabolism-related proteins in mice.This demonstrates that FAD3B may influence skeletal muscle growth not only by regulating polyunsaturated fatty acid conversion but also by modulating ubiquitination of key proteins.These results provide a novel theoretical foundation and molecular targets for studying the mechanism of FAD3B in skeletal muscle development.

Key words: Mice, FAD3 gene, Ubiquitinated proteomics, Ubiquitination, Bioinformatics analysis, Muscle energy metabolism

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引用本文

杜新宇, 郭云鹏, 陈卓, 杨欣月, 李新, 居佳雯, 郭益文. FAD3B转基因小鼠肌肉能量代谢的泛素化蛋白组学研究[J]. 华北农学报, 2025, 40(6): 223-230. doi: 10.7668/hbnxb.20195968.

DU Xinyu, GUO Yunpeng, CHEN Zhuo, YANG Xinyue, LI Xin, JU Jiawen, GUO Yiwen. Ubiquitinated Proteomic Study of Muscle Energy Metabolism of FAD3B Transgenic Mice[J]. Acta Agriculturae Boreali-Sinica, 2025, 40(6): 223-230. doi: 10.7668/hbnxb.20195968.