华北农学报 ›› 2023, Vol. 38 ›› Issue (5): 206-217. doi: 10.7668/hbnxb.20194032

所属专题: 畜牧

• 畜牧·水产·兽医 • 上一篇    下一篇

安格斯牛十字部高性状全基因组关联分析及PSEN1基因对成肌细胞增殖分化的影响

李德生1,2, 蒋秋斐3, 封元3, 王瑜3, 冯小芳1,2, 禹保军1,2, 陈亚飞4, 张迪1,2, 王川川1,2, 李蕾蕾1,2, 顾亚玲1,2, 张娟1,2   

  1. 1 宁夏大学 动物科技学院,宁夏 银川 750021
    2 宁夏反刍动物分子细胞育种重点实验室,宁夏 银川 750021
    3 宁夏回族自治区畜牧工作站,宁夏 银川 750002
    4 银川市畜牧技术推广服务中心,宁夏 银川 750021
  • 收稿日期:2023-05-05 出版日期:2023-10-28
  • 通讯作者:
    张 娟(1982-),女,宁夏中卫人,教授,博士,主要从事畜禽分子育种研究。
  • 作者简介:

    李德生(1999-),男,黑龙江绥化人,在读硕士,主要从事动物遗传育种研究。

  • 基金资助:
    安格斯牛核心群建设项目; 2021年自治区重点研发计划(2021BEF01002)

Genome-wide Association Analysis of Angus Cattle Cross Section Height Traits and the Effect of PSEN1 Gene on Proliferation and Differentiation of Myogenic Cells

LI Desheng1,2, JIANG Qiufei3, FENG Yuan3, WANG Yu3, FENG Xiaofang1,2, YU Baojun1,2, CHEN Yafei4, ZHANG Di1,2, WANG Chuanchuan1,2, LI Leilei1,2, GU Yaling1,2, ZHANG Juan1,2   

  1. 1 College of Animal Science and Technology,Ningxia University,Yinchuan 750021,China
    2 Key Laboratory of Ruminant Molecular Cell Breeding in Ningxia,Yinchuan 750021,China
    3 Animal Husbandry Extension Station,Yinchuan 750002,China
    4 Yinchuan City Animal Husbandry Technology Extension Service Center,Yinchuan 750021,China
  • Received:2023-05-05 Published:2023-10-28

摘要:

旨在筛选出与宁夏地区安格斯牛十字部高性状显著相关的单核苷酸多态性位点(SNPs)及对应候选基因,并探究干扰候选基因PSEN1对成肌细胞增殖分化的影响。以宁夏地区饲养的211头安格斯牛母牛为研究对象,通过全基因组关联分析,筛选与安格斯牛十字部高性状显著相关SNPs及对应候选基因;利用实时荧光定量PCR(qRT-PCR)检测候选基因在成肌细胞不同分化时期的表达规律;合成基因PSEN1的特异性干扰片段转染成肌细胞,利用qRT-PCR和EdU染色技术检测干扰PSEN1基因对成肌细胞的影响。结果表明:位于1,3,4,5,7,10,13,15,20,28号染色体的14个位点及相应13个候选基因与十字部高显著相关。在成肌细胞分化过程中,PSEN1基因的表达量呈先上升后下降的趋势,第4天达到最高。与对照组相比,干扰组阳性细胞率极显著低于对照组(P<0.01),肌肉发育标志基因PAX3MEF2CIGF2MYOG的表达量显著降低(P<0.05),PCNAMEF2BMYH1CDK1MYF5等基因虽然差异不显著,但整体仍呈现下降趋势,表明干扰PSEN1基因后会抑制成肌细胞的增殖和分化。确定了影响安格斯牛十字部高性状的候选基因;PSEN1基因在成肌细胞增殖和分化过程中具有重要作用,可能是影响安格斯牛生长发育的一个潜在候选基因。

关键词: 安格斯牛, 十字部高, 全基因组关联分析, SNP, PSEN1, 成肌细胞

Abstract:

The purpose of this study was to screen single nucleotide polymorphisms(SNPs)and candidate genes significantly associated with high cross traits in Angus cattle in Ningxia,and to investigate the effect of interference with PSEN1 on the proliferation and differentiation of myogenic cells.A group of 211 Angus cows reared in Ningxia was used to screen SNPs and candidate genes significantly associated with high cross traits in Angus cows by genome-wide association analysis;the expression pattern of candidate genes at different differentiation periods of adult myoblasts was detected by Real-time Fluorescence Quantitative PCR(qRT-PCR);the specific interfering fragment of synthetic gene PSEN1 was transfected into adult myoblasts;qRT-PCR and EdU staining techniques were used to detect the effect of PSEN1 gene on myogenic cells.The results showed that 14 SNPs located on chromosomes 1,3,4,5,7,10,13,15,20 and 28 and the corresponding 13 candidate genes were significantly associated with high cross section.During myogenic cell differentiation,the expression of PSEN1 gene showed a trend of increasing and then decreasing,reaching the highest on the fourth day.Compared with the control group,the positive cell rate was extremely significantly lower in the interference group(P<0.01),the expression of muscle development marker genes PAX3,MEF2C,IGF2 and MYOG was significantly lower(P<0.05),and the genes PCNA,MEF2B,MYH1,CDK1 and MYF5 showed an overall decreasing trend although the differences were not significant,indicating that interference PSEN1 gene suppressed the proliferation and differentiation of myogenic cells.This study identified candidate genes affecting the cross height trait in Angus cattle,which provided a basis for the improvement of production performance and breed selection in Ningxia Angus cattle;PSEN1 gene had an important role in the proliferation and differentiation of adult myoblasts and might be a potential candidate gene affecting the growth and development of Angus cattle.

Key words: Angus cattle, Height cross, Genome-wide association analysis, SNP, PSEN1, Myogenic cells

引用本文

李德生, 蒋秋斐, 封元, 王瑜, 冯小芳, 禹保军, 陈亚飞, 张迪, 王川川, 李蕾蕾, 顾亚玲, 张娟. 安格斯牛十字部高性状全基因组关联分析及PSEN1基因对成肌细胞增殖分化的影响[J]. 华北农学报, 2023, 38(5): 206-217. doi: 10.7668/hbnxb.20194032.

LI Desheng, JIANG Qiufei, FENG Yuan, WANG Yu, FENG Xiaofang, YU Baojun, CHEN Yafei, ZHANG Di, WANG Chuanchuan, LI Leilei, GU Yaling, ZHANG Juan. Genome-wide Association Analysis of Angus Cattle Cross Section Height Traits and the Effect of PSEN1 Gene on Proliferation and Differentiation of Myogenic Cells[J]. Acta Agriculturae Boreali-Sinica, 2023, 38(5): 206-217. doi: 10.7668/hbnxb.20194032.

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