3种警犬不同肌肉中PPARGC1A基因的发育性表达研究
2021-03-18李静万九生陈超邓卫东岳锐熊和丽黎立光
李静 万九生 陈超 邓卫东 岳锐 熊和丽 黎立光



摘要 [目的]探究PPARGC1A基因mRNA在昆明犬、马里努阿犬、德国牧羊犬不同肌肉组织中的发育性表达规律,为研究犬的肌肉和运动能力形成机理提供理论参考。[方法]采用实时荧光定量PCR技术检测昆明犬、马里努阿犬、德国牧羊犬3种警犬在6月龄、1岁龄的臀腿肌肉组织中PPARGC1A基因mRNA表达量。[结果]随着年龄的增长,PPARGC1A基因在3种警犬肌肉中呈现逐渐上升的表达趋势。马里努阿犬在6月龄和1岁龄时臀腿肌中的表达量极显著高于昆明犬和德国牧羊犬(P<0.01)。[结论]PPARGC1A基因在肌肉发育和肌内脂肪沉积过程中起着很重要的作用。该研究结果可为探索肌肉发育及肌内脂肪沉积相关研究提供理论参考和研究基础。
关键词 犬;昆明犬;PPARGC1A基因;发育性表达;肌肉组织
中图分类号 S829.2 文献标识码 A 文章编号 0517-6611(2021)04-0092-04
doi:10.3969/j.issn.0517-6611.2021.04.024
Developmental Expression of PPARGC1A Gene in Different Muscles of Three Police Dogs
LI Jing1,2,3, WAN Jiu-sheng1,2, CHEN Chao1,2 et al
(1.Kunming Police Dog Base of the Ministry of Public Security, Kunming, Yunnan 650201;2.Key Laboratory of Police Dog Technology of the Ministry of Public Security, Kunming, Yunnan 650201;3.School of Animal Science and Technology of Yunnan Agricultural University, Kunming, Yunnan 650201)
Abstract [Objective]The aim of this study was to investigate the development expression laws of PPARGC1A gene mRNA in different muscle tissues of Kunming Dog, Malinua Dog and German Shepherd Dog, and provide theoretical reference for studying the formation mechanism of muscle and motor ability of dogs.[Method] The expression quantity of PPARGC1A gene mRNA in the gluteal and leg muscles of Kunming Dog, Malinua Dog and German Shepherd Dog at 6 month-age and 1-year-age was detected by real-time fluorescence quantitative PCR. [Result] PPARGC1A gene was gradually increased in three kinds of muscles with the increase of age. The expression level of gluteal leg muscle in Malinua Dog was significantly higher than that in Kunming Dog and German Shepherd Dog (P< 0.01). [Conclusion] PPARGC1A gene played an important role in muscle development and intramuscular fat deposition. The results of this study could provide theoretical reference and research basis for the study of muscle development and intramuscular fat deposition.
Key words Dog;Kunming Dog;PPARGC1A gene;Developmental expression;Muscle tissue
基金項目 公安部科技强警基础工作专项项目(2018GABJC27,2019GABJC29);云南省科技厅科技计划项目基础研究计划项目(青年项目)(2019FD025)。
作者简介 李静(1989—),女,内蒙古乌兰察布人,助理研究员,博士,从事警犬分子遗传育种研究。通信作者,副研究员,硕士,从事警犬疾病健康研究。
收稿日期 2020-05-18;修回日期 2020-06-06
1998年Puigserver等[1]发现了过氧化物酶体增殖物激活受体γ共激活因子1α,该转录因子作为与自适应产热相关(PPARγ)和PPARγ共激活因子家族PGC-1。作为核受体PPARG的转录共激活因子,它是脂肪细胞分化的主要调节剂。它还可以诱导肌纤维类型从酵解型向有氧代谢型转换,进而改善肉质;另外,还能够与肌肉组织的选择性转录因子肌细胞特异性增强子结合,控制另一肉质候选基因在肌肉组织中的表达[2]。在具有高能量需求并富含线粒体的组织中发现了PPARGC1A mRNA,同时该PPARGC1A蛋白的通用功能使其成为肉品质性状的功能候选基因[3]。……
