Biotechnology Bulletin ›› 2014, Vol. 0 ›› Issue (3): 171-176.

• Papers • Previous Articles     Next Articles

Expression and Antiviral Activity of Chicken Interferon Alpha in Bombyx mori

Li Tiantian1, Yang Ling2, Yi Yongzhu3, Shen Guifang1, Zhang Zhifang1, Li Yinü1   

  1. (1. Biotechnology Research Institute,Chinese Academy of Agricultural Sciences,Beijing 100081;2. Department of Light Industry Engineering,Henan Province Light Industry School,Zhengzhou 450000;3. Sericultural Research Institute,Chinese Academy of Agricultural Sciences,Zhenjiang 212018)
  • Received:2014-01-10 Online:2014-03-29 Published:2014-03-31

Abstract: Chicken interferon alpha plays a significant role in infection prevention and treatment of chicken virus diseases. The purpose of this study is to acquire efficient expression and production of biologically active chicken interferon alpha by the baculovirus expression vector system. The full length of chicken interferon alpha(ChIFN-α)gene was optimized and synthesized. The optimized ChIFNα was cloned into the baculovirus transfer vector pVL1393. Thus, the recombinant plasmid pVL-ChIFNα was constructed. The pVL-ChIFNα was co-transfected with the BmBacmid DNA. The hemolymph of silkworm larvae was collected after infected with the recombinant virus. Western blot analysis showed that chicken interferon-alpha protein with the molecular weight of 19 kD was expressed. The activity of the expressed chicken interferon-alpha was detected by inhibiting cytopathic effect in the Vero-VSV*GFP test system. The antiviral activity was about 3. 2×10 5 U/mL. The chicken interferon alpha protein was successfully expressed in the baculovirus expression vector system, which would be valuable in developing efficient and cost effective chicken interferon biological product.

Key words: Chicken interferon alpha, Silkworm, Baculovirus expression vector system, Antiviral activity

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