ACTA AGRICULTURAE BOREALI-SINICA ›› 2020, Vol. 35 ›› Issue (3): 208-216. doi: 10.7668/hbnxb.20190972

Special Issue: Animal husbandry Biotechnology Hot Article

• Animal·Husbandry • Previous Articles     Next Articles

Cloning and Expression of Yak MDH Ⅱ Gene and Correlation Analysis of Candidate Genes in Lipid Metabolism

CHEN Lulu1, WANG Hui1, WANG Jikun1, CHAI Zhixin1, WANG Jiabo1, CHEN Zhihua1, XIN Jinwei2, JI Qiumei2, ZHONG Jincheng1   

  1. 1. Key Laboratory of Qinghai-Tibetan Plateau Animal Genetic Resource Reservation and Utilization, Sichuan Province and Ministry of Education, Southwest Minzu University, Chengdu 610041, China;
    2. State Key Laboratory of Barley and Yak Germplasm Resources and Genetic Improvement, Tibet Academy of Agricultural and Animal Husbandry Sciences, Lhasa 850009, China
  • Received:2019-12-12 Published:2020-06-28

Abstract: This study aimed to clone the yak MDH Ⅱ gene, combined with tissue expression analysis and correlation analysis of lipid metabolism candidate genes, which may provide theoretical basis for studying the lipid metabolism mechanism of the yak. 12 yaks (4 age groups:0.5, 2.5, 3.5, 7.5 years old)were selected to extract the heart, liver, lung, gluteal muscle and gluteal fat tissue samples, and total RNA was extracted and reverse transcribed into cDNA. The MDH Ⅱ expression level was detected by RT-qPCR. 12 lipid metabolism candidate genes were randomly selected and their expressions in yak gluteal muscle and gluteal fat was detected by RT-qPCR. Their correlation was analyzed by Pearson coefficient method. The results showed that the yak MDH Ⅱ gene was 1 196 bp in length and the CDS region was 1 017 bp in length, encoding 338 amino acids, which was relatively un-conservative in evolution. With the increase of age, the expression of MDH Ⅱ in each tissue decreased, and the expression in the heart was higher than other tissues. Except FABP2 and VLDLR, the expression of the remaining 10 candidate genes for lipid metabolism on gluteal fat of yak was higher than gluteal muscle. There was no correlation between the expression of MDH Ⅱ gene and candidate genes of lipid metabolism on gluteal muscle. The expression of MDH Ⅱ gene on gluteal lipid was significantly negatively correlated with CPT1 gene. Taken together, we had cloned MDH Ⅱ gene successfully, which was significantly associated with the CPT1 gene. It is speculated that this gene may be involved in the regulation of lipid metabolism, which provides a theoretical reference for further research on the mechanism of lipid metabolism in yak.

Key words: Yak, MDH Ⅱ gene, Clone, Expression, Lipid metabolism candidate genes

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Cite this article

CHEN Lulu, WANG Hui, WANG Jikun, CHAI Zhixin, WANG Jiabo, CHEN Zhihua, XIN Jinwei, JI Qiumei, ZHONG Jincheng. Cloning and Expression of Yak MDH Ⅱ Gene and Correlation Analysis of Candidate Genes in Lipid Metabolism[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2020, 35(3): 208-216. doi: 10.7668/hbnxb.20190972.

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