生物技术通报 ›› 2014, Vol. 0 ›› Issue (2): 97-101.

• 研究报告 • 上一篇    下一篇

合作猪SLA-DQA基因第4外显子多态性分析

张国华1, 马小军1,2, 吕伟丽1   

  1. 1.甘肃农业大学 动物医学院,兰州 730037;2. 甘肃省草食动物生物技术重点实验室,兰州 730070
  • 收稿日期:2013-08-23 出版日期:2014-02-27 发布日期:2014-02-27
  • 作者简介:张国华,男,硕士研究生,研究方向:动物免疫与抗病;E-mail:664802394@qq.com
  • 基金资助:
    甘肃省自然科学基金项目(096RJZA005)

Analyzing Polymorphism of Hezuo Swine SLA-DQA Gene Exon 4

Zhang Guohua1, Ma Xiaojun1,2, Lü Weili1,   

  1. (1. College of Veterinary MedicineGansu Agricultural UniversityLanzhou 730070;2 Gansu Key Laboratory of Herbivorpous Animal BiotechnologyLanzhou 730070)
  • Received:2013-08-23 Published:2014-02-27 Online:2014-02-27

摘要: 合作猪的MHC-DQA基因的适应性变异,其抗原识别区域(即外显子4)通过PCR扩增和随后的单链构象多态性(SSCP)和序列分析,结果显示在439个合作猪个体,SLA-DQA第4外显子检出4个等位基因和6个基因型(AA、BB、DD、AB、AC和AD),其中A等位基因和AA基因型的频率最高,为优势基因和优势基因型。对不同型的PCR-SSCP条带测序分析,发现7个突变位点(5 068 bp T→C,5 109 bp和5 149 bp处缺失C,5 131 bp A→G导致丝氨酸变为甘氨酸,5 135 bp C→T,5 234 bp G→A,5 136 bp 处插入A)。遗传学分析发现,合作猪多态信息含量(PIC)为0.240 1,属于低度多态,各种基因型的分布不显著。研究结果证实,合作猪SLA—DQA基因第4外显子为低度多态。

关键词: 合作猪, SLA-DQA基因, 多态性, 遗传特性。

Abstract: The Hezuo swine SLA-DQA gene adaptive mutation, antigen recognition region(exon 4)by PCR amplification and subsequent single-strand conformation polymorphism(SSCP)and sequence analysis . The results show that 439 Hezuo swine individual SLA -DQA exon 4 detection of three alleles and six genotypes(AA, BB, CC, AB, AC, BC)the highest frequency of the A allele and AA genotype, genotype was the dominant gene and advantages .On a different type of PCR-SSCP pieces with sequencing analysis found that the fourmutated sites(5 068 bp T→C, 5 109 bp and 5 149 bp insert C, 5 131 bp A → G cause serine into glycine, 5 135 bp C → T, at 5 136 bp insert A, the 5 234 bp G → A lead tyrosyl acid becomes cysteine.Genetic analysis:cooperation pig polymorphic information content(PIC)was 0.240 1, belongs to the moderate polymorphism;significant distribution of various genotypes .The findings confirm that cooperation pig SLA - DQA gene the 4 exon has low rich genetic polymorphism .