Acta Veterinaria et Zootechnica Sinica ›› 2020, Vol. 51 ›› Issue (5): 1163-1166.doi: 10.11843/j.issn.0366-6964.2020.05.028

• RESEARCH NOTES • Previous Articles    

Expression of Yak AIF-1 Protein and Its Effect on mRNA of Inflammatory Factors in Macrophagocyte

LI Juan1, WANG Li1*, LUO Xiaolin2*, GUAN Jiuqiang2, AN Tianwu2, ZHANG Xiangfei2   

  1. 1. Key Laboratory of Qinghai-Tibetan Plateau Animal Genetic Resource Reservation and Utilization, Ministry of Education and Sichuan Province Southwest Minzu University, Chengdu 610041, China;
    2. Sichuan Academy of Grassland Sciences, Chengdu 611731, China
  • Received:2019-10-25 Online:2020-05-25 Published:2020-05-16

Abstract: The objective of this study was to express the allograft inflammatory factor-1 (AIF-1) of yak in E.coli BL21(DE3) and investigate its effect on mouse macrophages. The expression levels of AIF-1 gene in 5 tissues of yak were detected by q-PCR. A prokaryotic expression vector was constructed to express and purify AIF-1 protein. The expression levels of 4 inflammatory factors in mouse macrophages were detected by q-PCR. The results showed that the expression level of AIF-1 gene was the highest in the spleen of Maiwa yak, which was extremely significantly higher than those in other tissues (P<0.01). Recombinant protein of approximately 29.47 ku was expressed and purified. The expression levels of IL-1β, IL-6, TNF-α and iNOS in mouse macrophages were promoted by 1.0, 10.0 and 100.0 μg·mL-1 of AIF-1 protein. The results indicated that AIF-1 played a role in the immune response of macrophages. This article will be benefit for further study on the function of yak AIF-1.

Key words: allograft inflammatory factor-1, prokaryotic expression, macrophage, inflammatory factor

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