畜牧兽医学报 ›› 2019, Vol. 50 ›› Issue (12): 2431-2439.doi: 10.11843/j.issn.0366-6964.2019.12.007

• 生物技术与繁殖 • 上一篇    下一篇

牦牛SIRT3基因的克隆及其在各组织和睾丸不同发育阶段的表达

王斌1,2, 佟连鑫1, 秦文昌1,2, 李键1,2,3, 殷实1,2,3,4*   

  1. 1. 西南民族大学生命科学与技术学院, 成都 610041;
    2. 青藏高原动物遗传资源保护与利用教育部重点实验室, 成都 610041;
    3. 青藏高原动物遗传资源保护与利用四川省重点实验室, 成都 610041;
    4. 西南民族大学现代生物技术国家民委重点实验室, 成都 610041
  • 收稿日期:2019-06-10 出版日期:2019-12-23 发布日期:2019-12-20
  • 通讯作者: 殷实,主要从事动物繁殖学和发育生物学研究,E-mail:raulyinshi@163.com
  • 作者简介:王斌(1993-),男,山西原平人,硕士生,主要从事动物细胞与胚胎工程研究,E-mail:15708451401@163.com
  • 基金资助:
    中央高校基本科研业务费专项基金项目(2018NQN33);四川省科技支撑计划(2017NZ0076);牦牛遗传资源与保护创新团队(13CXTD01);青藏高原动物遗传资源保护与利用重点实验室资助

Cloning of Yak SIRT3 Gene and Its Expression Pattern in Different Tissues and Testis at Different Development Stages

WANG Bin1,2, TONG Lianxin1, QIN Wenchang1,2, LI Jian1,2,3, YIN Shi1,2,3,4*   

  1. 1. College of Life Science and Technology, Southwest Minzu University, Chengdu 610041, China;
    2. Key Laboratory of Ministry of Education for Qinghai-Tibetan Plateau Animal Genetic Resource Reservation and Exploitation, Chengdu 610041, China;
    3. Qinghai-Tibetan Plateau Animal Genetic Resource Reservation and Utilization Key Laboratory of Sichuan Province, Chengdu 610041, China;
    4. Key Laboratory of Modern Biotechnology of State Ethnic Affairs Commission, Southwest Minzu University, Chengdu 610041, China
  • Received:2019-06-10 Online:2019-12-23 Published:2019-12-20

摘要: 旨在克隆牦牛沉默蛋白调节因子3(sirtuin 3,SIRT3)基因,并检测其在牦牛不同组织及不同年龄睾丸中的表达水平,从而为研究SIRT3在牦牛睾丸发育过程中的作用机制提供试验依据。本研究选取胎牛期(5~6个月)、幼年期(1~2岁)、性成熟期(3~5岁)及老年期(7~9岁)健康雄性牦牛共12头(每组各3头),其中来源于同一年龄阶段的3个组织样本视为生物学重复。采集性成熟期牦牛肝、心、肺、脾、脑、肾、肌肉、小肠、睾丸和大肠以及4个时期的睾丸组织。分别提取各组织的总RNA,并利用反转录PCR(reverse transcription PCR,RT-PCR)技术克隆获得牦牛SIRT3基因序列,使用相关生物信息学软件预测其编码蛋白质的结构和功能;通过实时荧光定量PCR(quantitative real-time PCR,qRT-PCR)检测SIRT3 mRNA在牦牛各组织及睾丸4个发育阶段的表达水平。结果表明,SIRT3基因的ORF(open reading frame,开放阅读框)为1 002 bp,编码333个氨基酸,与黄牛和绵羊的同源性分别达到99.9%和96.7%,该基因的mRNA在牦牛的各个组织中广泛表达,在脾、睾丸、肺和肌肉中的表达量较高。随年龄增长SIRT3 mRNA在牦牛睾丸中表达呈现先上升后下降的趋势,其中在性成熟期的表达量最高。本研究为揭示SIRT3在牦牛生长发育,尤其是睾丸发育过程中的调控提供了一定的基础数据。

关键词: 组蛋白去乙酰化, SIRT3, 牦牛, 组织表达谱, 睾丸

Abstract: This research was conducted to clone the sirtuin 3 (SIRT3) gene in yak and to identify its expression pattern in various tissues and testis at different development ages, respectively. This research might provide reliable basis for studying the mechanism of SIRT3 in testis development of yak. A total of 12 healthy male yaks (3 in each group) in fetal (5-6 months), calve (1-2 years old), sexual maturity (3-5 years old) and old (7-9 years old) stages were selected. Three samples from the same age were considered as biological duplications. The samples of liver, heart, spleen, lung, brain, kidney, muscle, small intestine, testicle and large intestine were collected from yaks during sexual maturity stage, and testicles were collected from yaks at 4 different development stages, respectively. Total RNAs in different samples were extracted respectively and the coding sequence of yak SIRT3 gene was cloned by reverse transcription PCR(RT-PCR). The structure and function of the protein encoded by SIRT3 gene were predicted by related bioinformatics softwares. The expressions of SIRT3 mRNA in different tissues and testis at 4 different development stages were determined by quantitative real-time PCR (qRT-PCR). The results showed that the ORF(open reading frame) of SIRT3 was 1 002 bp, which encoded 333 amino acids. The sequence of SIRT3 showed 99.9% and 96.7% homology with that of cattle and sheep, respectively. The mRNA of SIRT3 was widely expressed in various tissues of yak, and its expression was relatively higher in spleen, testis, lung and muscle. The expression of SIRT3 mRNA in the testis of yak increased firstly and then decreased with age, with the highest expression in sexual maturity stage. This study provides basic data for revealing the regulation of SIRT3 in yak growth and development, especially in testicular development.

Key words: histone deacetylation, SIRT3, yak, tissue expression pattern, testis

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