China Animal Husbandry and Veterinary Medicine ›› 2021, Vol. 48 ›› Issue (10): 3512-3521.doi: 10.16431/j.cnki.1671-7236.2021.10.002

• Biotechnology • Previous Articles     Next Articles

Construction and Analysis of the Luciferase Reporter Gene Vector of HSD17B1 Gene Promoter in Buffalo

LU Xingrong, DUAN Anqin, MA Xiaoya, LIANG Shasha, DENG Tingxian   

  1. Guangxi Key Laboratory of Buffalo Genetics, Breeding and Reproduction Technology, Guangxi Buffalo Research Institute, Chinese Academy of Agricultural Sciences, Nanning 530001, China
  • Revised:2021-06-02 Online:2021-10-20 Published:2021-09-30

Abstract: The research was designed to screen the active region and influence factors of buffalo HSD17B1 gene promoter, predict its transcription binding factor, and provide a theoretical basis for exploring the regulatory mechanism of HSD17B1 gene in buffalo reproductive performance. Using buffalo blood genomic DNA as template, PCR was used to amplify three active region sequences of HSD17B1 gene promoter, and then was directed to the pGL3-promoter vector. Recombinant plasmids were transfected into buffalo follicle granulosa cells, and the activity of relative luciferin enzymes was measured through a dual-luciferase detection system and their relationship to luteinizing hormone (LH) and follicle stimulating hormone (FSH) were explored. Transcription binding factor prediction was made in the HSD17B1 gene promoter region by bio-informational method. The results showed that three different length of HSD17B1 gene promoter fragments were successfully cloned and their dual-luciferase reporting vector were successfully constructed. The active detection of different length promoter fragments found that pGL-pro-HSD17B1-1500 was the most active, and -866/-1 500 bp was the core promoter region of HSD17B1 gene, indicating that this region played an important role in the transcription regulation of HSD17B1 gene. The luciferase activity test results showed that the addition of LH could enhance the activity of HSD17B1 gene promoter. Bio-information analysis of the HSD17B1 gene promoter region sequence found that there were 6 transcription factor binding site (Sp1(-2 327/-2 317 bp), HOXA4(-2 162/-2 146 bp), Sp1(-1 409/-1 395 bp), Sp1(-1 391/-1 380 bp), Sp1(-1 345/-1 319 bp) and GATA1(-812/-801 bp)), but no CpG island, and there were one TATA-box and two CAAT-box. The results indicated that the luciferase reporter gene vector of buffalo HSD17B1 gene promoter was successfully constructed, the core region of HSD17B1 gene promoter was determined, and the activity of the promoter was enhanced by LH adding.

Key words: buffalo; HSD17B1 gene; promoter

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