ACTA AGRICULTURAE BOREALI-SINICA ›› 2017, Vol. 32 ›› Issue (6): 106-112. doi: 10.7668/hbnxb.2017.06.016

Special Issue: Animal husbandry

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Cloning and Tissue Expression Profile of KLF9 Gene in Goat

ZHAO Yue1,2, LIN Yaqiu1, ZHU Jiangjiang2, LIN Sen1,2, CHI Yongdong1, LIU Lushu1, WANG Yong1,2   

  1. 1. College of Life Science and Technology in Southwest Minzu University, Chengdu 610041, China;
    2. Key Laboratory of Sichuan Province for Qinghai-Tibetan Plateau Animal Genetic Reservation and Exploitation, Chengdu 610041, China
  • Received:2017-09-17 Published:2017-12-28

Abstract: The aim of this study was to clone the sequence of Kruppel-like factor 9 (KLF9) gene and elucidate its expression in different tissues and cells in goats,which may lay a foundation for further study of the KLF9 gene in regulating goat intramuscular fat deposition.Two 7-day-old goats were used for intramuscular preadipocytes culture by collagenase digestion.Various tissues,including heart,liver,spleen,kidney,longissimus dorsi muscle,biceps femoris muscle,triceps brachii muscle and subcutaneous fat,were collected from 4 adult Jianzhou Big-eared goats and Tibetan goats respectively.After total RNA extraction,liver,spleen and subcutaneous fat tissues were used for KLF9 gene cloning by RT-PCR.Real-time fluorescence quantitative PCR (qPCR) method was then used to detect the expression level of KLF9 gene in different tissues and intramuscular pre-adipocytes of different differentiation stages(0,2,4,6 d).The results showed that the length of goat KLF9 gene was 891 bp,including 735 bp CDS,86 bp 5'UTR sequence and 70 bp 3'UTR sequence,encoding 244 amino acids.The KLF9 amino acid sequences of Jianzhou Big-eared goats shared 99.73% similarity with Tibetan goats, following by cattle,pig,human and rat with 99.18%-97.54%,respectively.The expression level of KLF9 gene in liver and subcutaneous fat of Jianzhou Big-eared goats was significantly higher than that in other tissues (P <0.01),while the expression level of KLF9 gene in lungs of Tibetan goats was significantly higher than that in any other tissues(P <0.01).Comparing with the non-differentiation pre-adipocytes,the expression of KLF9 gene was significantly increased in 2 d(P <0.01).The expression pattern of the gene was specific in varieties on the basis of obtaining the KLF9 gene sequence of goat,and it might play an important role in the early stage of differentiation.

Key words: Goat, KLF9, Cloning, Tissue expression, Intramuscular preadipocytes

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Cite this article

ZHAO Yue, LIN Yaqiu, ZHU Jiangjiang, LIN Sen, CHI Yongdong, LIU Lushu, WANG Yong. Cloning and Tissue Expression Profile of KLF9 Gene in Goat[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2017, 32(6): 106-112. doi: 10.7668/hbnxb.2017.06.016.

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