畜牧兽医学报 ›› 2016, Vol. 47 ›› Issue (4): 661-670.doi: 10.11843/j.issn.0366-6964.2016.04.004

• 遗传繁育 • 上一篇    下一篇

ADIG诱导牛成肌细胞转分化及相关基因的表达分析

梅楚刚1,张琼1,付常振1,刘扬1,姜碧杰1,成功1,2,昝林森1,2*   

  1. (1.西北农林科技大学动物科技学院,杨凌 712100; 2.国家肉牛改良中心,杨凌 712100)
  • 收稿日期:2014-04-15 出版日期:2016-04-23 发布日期:2016-04-23
  • 通讯作者: 昝林森,教授,博士生导师,主要从事肉牛、奶牛遗传改良与健康养殖方面的教学、科研及技术推广工作,E-mail: zanlinsen@163.com
  • 作者简介:梅楚刚(1986-),男,河南信阳人,博士生,主要从事动物生物技术方面的研究,E-mail: meichugang@163.com
  • 基金资助:

    国家863计划(2013AA102505);国家科技支撑计划(2012BAD12B07);国家转基因重大专项(2014ZX08007-002);国家肉牛牦牛产业技术体系(CARS-38)

ADIG Inducing the Trans-differentiation of Bovine Myoblasts and Its Related Gene Expression

MEI Chu-gang1,ZHANG Qiong1,FU Chang-zhen1,LIU Yang1,JIANG Bi-jie1,CHENG Gong1,2,ZAN Lin-sen1,2*   

  1. (1.College of Animal Science and Technology,Northwest A&F University,Yangling 712100,China;2.National Beef Cattle Improvement Center in China,Yangling 712100,China)
  • Received:2014-04-15 Online:2016-04-23 Published:2016-04-23

摘要:

旨在通过在牛成肌细胞中过表达ADIG基因,诱导成肌细胞向成脂转分化,探讨该牛脂肪分化转录因子ADIG基因在脂类代谢过程中的功能,为阐明牛脂肪细胞分化转录因子ADIG基因在牛脂肪组织生长发育过程中发挥的作用提供证据。本研究用AD-ADIG腺病毒原液诱导转分化初生荷斯坦牛的成肌细胞,并在诱导分化后第2、4、6、8、10、12、14天进行油红O染色观察诱导成脂情况,同时收集细胞提取总RNA,利用实时荧光定量PCR分别检测ADIGPPARγC/EBPαSREBPF1、FABP4、FASMyoD基因的表达量变化。实时荧光定量PCR检测结果表明,ADIG基因在第2、4、6、8、10、12、14天均有高水平表达,且随着诱导天数增加脂滴明显增多。成脂相关的基因PPARγSREBPF1和FAS在后期AD-ADIG组中表达量均高于空白组,成肌相关的基因MyoD相对表达量在初期就显著下降,且AD-ADIG组明显低于对照组。综合脂滴染色和相关基因表达量方面的研究结果,说明ADIG基因在诱导牛成肌细胞分化向成脂转分化过程中发挥着重要作用,而且牛成肌细胞有向脂肪细胞分化的倾向。

Abstract:

The aim of this study was to provide evidence about the role of ADIG gene in bovine adipose tissue during growth and development,and to lay a theoretical basis for further study of the molecular mechanisms of bovine fat metabolism and meat quality improvement through inducing bovine myoblasts trans-differentiating into fat with overexpressing ADIG gene in bovine myoblasts.We induced bovine myoblasts trans-differentiating with AD-ADIG recombinant adenovirus,observed the lipid droplets after Oil Red O staining,collected cells to extract RNA at the 0th,2nd,4th,6th,8th,10th,12th,14th day,respectively,and detected relative expressions of fat-related genes ADIGPPARγC/EBPαSREBPF1,FABP4,FAS as well as the muscle-related gene MyoD by real-time quantitative PCR.The real-time quantitative PCR results showed that during the induced trans-differentiation process,ADIG gene was expressed at high levels at the 2nd,4th,6th,8th,10th,12th,14th day,and lipid droplets increased significantly.The relative expression of the fat-related genes PPARγSREBPF1 and FAS at late stages were obviously higher in AD-ADIG group than that in other groups,and the relative expression of muscle-related gene MyoD decreased at early stages,and was obviously lower in AD-ADIG group than that in other groups.The result indicate that ADIG gene play important roles in bovine myoblasts induced into fat and bovine myoblast has the potential of differentiating to adipocyte according to the results of Oil Red O staining and related gene relative expression.

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