China Animal Husbandry and Veterinary Medicine ›› 2019, Vol. 46 ›› Issue (12): 3486-3494.doi: 10.16431/j.cnki.1671-7236.2019.12.004

• Biotechnology • Previous Articles     Next Articles

Polymorphism and Bioinformatics Analysis of Promoter Regions of MYOD1 and AKT3 Genes in Large White Pigs

WANG Fei1, ZONG Qiufang1, MU Jingsheng2, WU Shenglong1, BAO Wenbin1   

  1. 1. College of Animal Science and Technology, Yangzhou University, Yangzhou 225000, China;
    2. Mengcheng County Jinghui Meng Agricultural Technology Co., Ltd., Mengcheng 233500, China
  • Received:2019-03-29 Online:2019-12-20 Published:2019-12-21

Abstract: To investigate the polymorphism of the promoter regions of MYOD1 and AKT3 genes and the possible molecular regulatory mechanism that affected gene expression,PCR direct sequencing was used to detect the polymorphism in the promoter regions of MYOD1 and AKT3 genes in Large White pigs.At the same time,the core promoter region,CpG island and transcription factor binding domain of MYOD1 and AKT3 genes were predicted by bioinformatics analysis.The results showed that there were 5 core promoter regions,1 CpG island region and 10 transcription factor binding domains of MYOD1 gene,and the fifth core promoter region was located in the CpG island region.A total of 6 core promoter regions were predicted for AKT3 gene,and no CpG island was found.1 SNP mutation was detected in MYOD1 gene at G-361T site by direct sequencing,but only 1 genotype was found in the experimental population,and the mutation site was located in the first core promoter region.There was 1 SNP-mutation in the promoter region of AKT3 gene T-1709C site,including TT,TC and CC genotypes,of which TT was the dominant genotype,and T was the dominant allele.Genetic polymorphism analysis indicated that the PIC value of this mutation site was 0.25 to 0.5,showing moderate polymorphism.This study preliminarily explored the polymorphism of MYOD1 and AKT3 genes promoter region and predicted the possible regulatory factors and regulatory elements in the promoter region,which would provide guidance and basis for the further study of the regulatory mechanisms of the MYOD1 and AKT3 genes for muscle growth and development and the use of mutation sites as genetic markers for molecular breeding.

Key words: pig; MYOD1 gene; AKT3 gene; promoter; polymorphism; bioinformatics analysis

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