China Animal Husbandry and Veterinary Medicine ›› 2017, Vol. 44 ›› Issue (9): 2587-2592.doi: 10.16431/j.cnki.1671-7236.2017.09.007

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Cloning and Eukaryotic Expression Plasmid Construction of Porcine Interleukin-18 Gene

SHI Ang, SHI Qing-he, LI Xin-guo, WANG Yu-guo, YANG Li, LI Shuang-shuang, CHEN Lu, WANG Chuan-qing   

  1. College of Animal Husbandry and Veterinary, Henan Agricultural University, Zhengzhou 450002, China
  • Received:2017-05-24 Online:2017-09-20 Published:2017-09-22

Abstract:

To obtain recombinant eukaryotic expression plasmid of porcine interleukin-18(IL-18), the whole gene of porcine IL-18 gene was amplified from porcine spleen, lung and lymph nodes by RT-PCR and cloned into eukaryotic expression vector pZJ-1. The recombinant expression plasmid pZJ-IL-18 were identified by enzyme digestion and sequencing analysis, and was transfected into 293T cells.The expression of IL-18 was detected by RT-PCR and Western blotting in both gene and protein levels. The results showed that the eukaryotic expression plasmid of porcine IL-18 was constructed and could express transiently in 293T cells. Western blotting result confirmed that porcine IL-18 polyclonal antibody could react specifically with approximately 17 ku expression products,and indicated that IL-18 could express correctly and be responsive.This study constructed the eukaryotic expression plasmid of porcine IL-18 gene which could express transiently in 293T cells, and laid the foundation for studying function of IL-18.

Key words: porcine; IL-18 gene; eukaryotic expression vector; clone

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