华北农学报 ›› 2023, Vol. 38 ›› Issue (5): 197-205. doi: 10.7668/hbnxb.20193924

所属专题: 畜牧

• 畜牧·水产·兽医 • 上一篇    下一篇

美仁牦牛PDK4基因克隆及组织表达

马小勇1,2, 戴荣凤1,2, 李歆怡1,2, 杨国武, 扎老3, 路建卫3, 赵雪4, 梁春年1,2   

  1. 1 中国农业科学院 兰州畜牧与兽药研究所,甘肃省牦牛繁育工程重点实验室,甘肃 兰州 730050
    2 农业农村部青藏高原畜禽遗传育种重点实验室,甘肃 兰州 730050
    3 合作市佐盖多玛乡畜牧站, 甘肃 合作 747000
    4 合作市农畜产品质量安全检测检验中心,甘肃 合作 747000
  • 收稿日期:2022-12-14 出版日期:2023-10-28
  • 通讯作者:
    梁春年(1973-),男,甘肃武威人,研究员,博士,主要从事动物遗传育种与繁殖研究。
  • 作者简介:

    马小勇(1999-),男,甘肃清水人,在读硕士,主要从事动物遗传育种与繁殖研究。

  • 基金资助:
    国家重点研发计划(2021YFD1600200); 现代肉牛牦牛产业技术体系(CARS-37); 甘肃省基础研究创新群体项目(20JR5RA580); 中国农业科学院创新工程(25-LIHPS-01); 甘肃省科技重大专项(21ZD10NA001); 甘肃省科技重大专项(GZGG-2021-1)

Cloning and Tissue Expression Analysis of PDK4 Gene in Meiren Yak

MA Xiaoyong1,2, DAI Rongfeng1,2, LI Xinyi1,2, YANG Guowu, ZHA Lao3, LU Jianwei3, ZHAO Xue4, LIANG Chunnian1,2   

  1. 1 Lanzhou Institute of Husbandry and Pharmaceutical Sciences of Chinese Academy of Agricultural Sciences, Key Laboratory of Yak Breeding Engineering of Gansu Province,Lanzhou 730050,China
    2 Key Laboratory of Animal Genetics and Breeding the Tibetan Plateau,Ministry of Agriculture and Rural Affairs,Lanzhou 730050, China
    3 Animal Husbandry Station,Zuogaiduoma Township of Hezuo City,Hezuo 747000,China
    4 Agricultural and Livestock Products Quality and Safety Inspection Center of Hezuo City,Hezuo 747000,China
  • Received:2022-12-14 Published:2023-10-28

摘要:

为研究美仁牦牛PDK4基因在各组织中的表达特征,探索其与脂肪沉积机制的相关性,采集了美仁牦牛背最长肌、心脏、肝脏、脾脏、肺脏、肾脏、脂肪和睾丸等组织样,并提取了其总RNA,通过RT-PCR、生物信息学软件及qPCR等技术对美仁牦牛PDK4基因进行了扩增、生信分析和表达特征研究。结果表明,美仁牦牛PDK4基因CDS区全长1 224 bp,编码407个氨基酸,蛋白相对分子质量为46.159 14 ku,理论等电点6.60,总平均亲水性-0.169,为亲水性蛋白;系统进化树结果表明,美仁牦牛与野牦牛亲缘关系最近,与鬣狗亲缘关系最远;PDK4蛋白有34处磷酸化位点,无信号肽和跨膜区,主要在线粒体中发挥生物学功能;美仁牦牛PDK4蛋白主要是由α-螺旋和无规则卷曲组成。PDK4基因在7日龄美仁牦牛肝脏和肺脏中的表达量显著高于其他组织(P<0.05),在肌肉、脂肪、脾脏和睾丸中中度表达,在肾和心脏中低表达。随着牦牛年龄增长,PDK4基因在30月龄美仁牦牛脂肪组织中的表达量增加,并显著高于7日龄美仁牦牛脂肪中的表达量(P<0.05)。以上结果表明,PDK4基因可能在美仁牦牛的生长过程中参与脂肪调控,在脂肪沉积过程中发挥重要作用。

关键词: 美仁牦牛, PDK4基因, 克隆, 实时荧光定量PCR

Abstract:

To investigate the expression characteristics of the PDK4 gene in various tissues of Meiren yaks and to explore its correlation with the mechanism of fat deposition,tissue samples were collected from the longest and dorsal muscles,heart,liver,spleen,lung,kidney,fat and testis of Meiren yaks,and total RNA was extracted.The gene was amplified,analyzed and characterized by RT-PCR,bioinformatics software,and qPCR.The results showed that the CDS region of the PDK4 gene was 1 224 bp,407 amino acids,the relative molecular mass of protein was 46.159 14 ku,the theoretical isoelectric point was 6.60,and the total average hydrophilicity was-0.169,which was a hydrophilic protein;the phylogenetic tree results showed that Meiren yak was the closest related to wild yak and the most distant related to hyena;PDK4 protein had 34 phosphorylation sites,no signal peptide and transmembrane region,and mainly plays a biological function in mitochondria;the PDK4 protein of Meiren yak was mainly composed of α-helix and irregular curling.The expression of the PDK4 gene in the liver and lung of 7-day-old Meiren yak was significantly higher than that of other tissues (P<0.05),moderately expressed in muscle,fat,spleen,and testes,and low in the kidney and heart.As the yak aged,the expression of the PDK4 gene in the adipose tissue of 30 months old Meiren yak increased and was significantly higher than that in the fat of 7-day-old Meiren yak(P<0.05).The above results suggest that the PDK4 gene may be involved in fat regulation during the growth process of Meiren yak and play an essential role in the fat deposition process.

Key words: Meiren yak, Pyruvate dehydrogenase kinase 4 gene(PDK4), Cloning, Real-time Fluorescent Quantitative PCR

引用本文

马小勇, 戴荣凤, 李歆怡, 杨国武, 扎老, 路建卫, 赵雪, 梁春年. 美仁牦牛PDK4基因克隆及组织表达[J]. 华北农学报, 2023, 38(5): 197-205. doi: 10.7668/hbnxb.20193924.

MA Xiaoyong, DAI Rongfeng, LI Xinyi, YANG Guowu, ZHA Lao, LU Jianwei, ZHAO Xue, LIANG Chunnian. Cloning and Tissue Expression Analysis of PDK4 Gene in Meiren Yak[J]. Acta Agriculturae Boreali-Sinica, 2023, 38(5): 197-205. doi: 10.7668/hbnxb.20193924.

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