Acta Veterinaria et Zootechnica Sinica ›› 2024, Vol. 55 ›› Issue (11): 4980-4991.doi: 10.11843/j.issn.0366-6964.2024.11.017

• Animal Genetics and Breeding • Previous Articles     Next Articles

Polymorphism Analysis of the ATG16L2 Gene Promoter Region in Hainan Black Goat

Huan WANG1(), Taoyu CHEN1, Hui WU2, Yong MENG1, Shiyuan LI1, Hejie QIAN1, Shihua NIU1, Churiga MAN1, Qiaoling CHEN1, Hongyan GAO1, Li DU1, Fengyang WANG1, Si CHEN1,*()   

  1. 1. Key Laboratory of Tropical Animal Reproduction & Breeding and Epidemic Disease Research of Hainan Province, College of Tropical Agriculture and Forestry, Hainan University, Haikou 570228, China
    2. Animal Husbandry and Veterinary Workstation of Barkol Kazak Autonomous County, Hami City, Xinjiang Uygur Autonomous Region, Hami 839202, China
  • Received:2024-05-14 Online:2024-11-23 Published:2024-11-30
  • Contact: Si CHEN E-mail:772101737@qq.com;chensi.ruth@hotmail.com

Abstract:

The study aimed to investigate the structural characteristics and genetic distribution of the ATG16L2 gene promoter region in Hainan Black goat, providing a theoretical basis for further exploring the expression regulation mechanism and function of this gene. This study focused on 200 Hainan Black goats, constructing a DNA pooling strategy. The polymorphism of the ATG16L2 gene promoter region in Hainan Black goats was initially screened using Sanger sequencing. PCR-RFLP technology was applied for genotyping the 200 Hainan Black goats. Linkage disequilibrium analysis was performed on the identified SNP loci to construct haplotypes. Bioinformatics methods were utilized to analyze the impact of SNP loci on the expression of the ATG16L2 gene in Hainan Black goats. The promoter region of the ATG16L2 gene in Hainan Black goats contained 3 linked single nucleotide polymorphisms (SNPs): SNP1 (g.30667970T > C), SNP2 (g.30668540T > C), and SNP3 (g.30668664C > T). Both SNP1 and SNP2 exhibited moderate levels of polymorphism, whereas SNP3 showed low levels. Notably, all three SNPs conformed to the principles of Hardy-Weinberg equilibrium(P > 0.05). The haplotype analysis revealed that the frequencies of haplotype H1, H2, H3, and H4 were 0.321, 0.304, 0.271, and 0.097, respectively, with H1 (CGC) being the predominant haplotype. The bioinformatics analysis results showed that there were 3 promoters, 4 CpG island regions, 2 repetitive elements LINE2 (—1 989-—1 826 bp, —562-—426 bp), hAT-Charlie (—1 804-—1 511 bp), and 5 CCAAT-Box, 13 CAAT-Box, 10 CGCG-Box, 11 GATA-Box and 2 TATA-Box of the ATG16L2 gene in Hainan Black goat. The integrated prediction from various online tools suggests that the above SNPs may affect the expression regulation of the ATG16L2 gene in Hainan Black goats by influencing the changes in transcription factors in the gene's promoter region. In this study, 3 SNP loci were identified in the promoter sequence of the ATG16L2 gene in Hainan Black goats. Among these, SNP1 and SNP2 exhibited moderate polymorphism, while SNP3 showed low polymorphism. It is predicted that these SNPs may influence transcription factor binding, thereby regulating gene expression. This provides a theoretical basis for further exploration of the function and regulatory mechanisms of the ATG16L2 gene.

Key words: Hainan Black goat, ATG16L2 gene, promoter, polymorphism, bioinformatics

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