›› 2015, Vol. 42 ›› Issue (11): 2833-2842.doi: 10.16431/j.cnki.1671-7236.2015.11.003

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Cloning,Bioinformatics Analysis and Transcriptional Activity Detection of Buffalo FSHR Gene Promoter

ZHU Peng, PANG Chun-ying, DENG Ting-xian, DUAN An-qin, LU Xing-rong, CHEN Ming-tang, YANG Bing-zhuang, LIANG Xian-wei   

  1. Guangxi Key Laboratory of Buffalo Genetics, Breeding and Reproduction, Guangxi Buffalo Research Institute, Chinese Academy of Agricultural Sciences, Nanning 530001, China
  • Received:2015-04-03 Online:2015-11-20 Published:2015-11-26

Abstract: In this study,the 5'flanking sequence of FSHR gene was cloned,and bioinformatics analysis and transcriptional activity detection were studied.One pair of primers was designed among the homologous of 5'flanking sequence of FSHR gene in different species,5'flanking sequence of FSHR gene was cloned by PCR and constructed into the EGFP reporter vector,the transcriptional activity of recombinant expression vector pFSHR-EGFP-1 was analyzed by transfecting into HEK-293T and CHO cell lines.The results showed that 2979 bp of 5'flanking sequence of FSHR gene and partial CDS region of Guangxi local swamp buffalo was successfully cloned and sequenced.The homology comparison result showed that buffalo FSHR gene shared 100%,99%,93%,92%,91% and 75% homologies of nucleotide sequence with that of the river type buffalo,cattle,sheep,goat,pig and human,respectively.Promoter and transcription factor binding site predictions showed that there were a TATA box in the -147 bp area of the upstream of translation initiation site,and trans acting element binding sites for GATAs,FOXO1,FOXO3,Nobox,STAT1,STAT3,STAT4,STAT5a,STAT5b,STAT6 and YY1.There were multiple binding sites for GATAs family genes in the FSHR gene promoter region,and in the same site of FSHR promoter,it displayed multiple GATAs bound.The FSHR gene promoter could initiate EGFP expression in HEK-293T cell lines,however very weakly,the expression of EGFP promoted by FSHR promoter was similar with by CMV promoter in CHO cells lines,and suggested that buffalo FSHR was a strong promoter.In conclusion,this study had successfully cloned FSHR gene promoter,analyzed its promoter sequence characteristics and successfully verified the tissue specific transcriptional activity.It laid the foundation for clarifying the transcriptional regulatory mechanism of buffalo FSHR gene and produced transgenic buffalo base on ovary specific expression of exogenous gene.

Key words: buffalo; FSHR; clone; bioinformatics analysis; transcriptional activity

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