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Functional analysis of the brain natriuretic peptide gene for high-altitude adaptation in Tibetan pigs

文献类型： 外文期刊

作者： Tian, Xiaolong 1 ; Ma, Jun 1 ; Wu, Yijing 2 ; Zhang, Pan 1 ; Li, Qinggang 2 ; Zhang, Hao 1 ; Wu, Changxin 1 ;

作者机构： 1.China Agr Univ, Natl Engn Lab Anim Breeding, Beijing Key Lab Anim Genet Improvement, Beijing 100193, Peoples R China

2.Anhui Acad Agr Sci, Inst Anim Sci & Vet Med, Hefei 230031, Peoples R China

关键词： BNP; High-altitude adaptation; Gene expression; SNP; Tibetan Pig

期刊名称：GENE （ 影响因子：3.688； 五年影响因子：3.329 ）

ISSN： 0378-1119

年卷期： 2021 年 768 卷

页码：

收录情况： SCI

摘要： High-altitude adaptation in Tibetan pigs (TP) is associated with positively-selected genes. The brain natriuretic peptide (BNP) gene is critical in the regulation of cardiovascular homeostasis and energy metabolism. The present study was conducted to identify the function of BNP for high-altitude adaptations in TP. RT-qPCR and western blotting results indicated that BNP expression could be upregulated when the pigs (especially for the Tibetan pigs) were raised to high altitude. In the 5' flanking region, three polymorphic sites, A-1964G, C-1780G, and T-940C were detected, and the genotype distribution of C-1780G was significantly different between the highland (TP) and lowland (Diannan small-eared pig; Yorkshire pig) breeds. The site of C-1780G was in active promoter regions identified using the luciferase reporter gene system, and the fragment with allele G had higher transcriptional activity than that with allele C. The TP population had a higher frequency of allele G than the two lowland breeds. Our results collectively demonstrated that the G allele of C-1780G in the BNP gene may be advantageous for high-altitude adaptation in pigs through upregulating BNP expression. Our findings provide information that helps toward a comprehensive understanding of the mechanism underlying the involvement of the BNP gene in high-altitude adaptation.

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