ACTA VETERINARIA ET ZOOTECHNICA SINICA ›› 2015, Vol. 46 ›› Issue (6): 981-988.doi: 10.11843/j.issn.0366-6964.2015.06.014

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Expression and Identification of Glycoprotein of Canine Distemper Virus in the Baculovirus-Insect Cell System

YU Yi-cong1,2,FENG Na2,3* ,YAN Fei-hu2,GAI Wei-wei2,WANG Tie-cheng2,WANG Hua-lei2,3,ZHENG Xue-xing2,3,ZHAO Yong-kun2,3,HUANG Geng2,YANG Song-tao2,GAO Yu-wei2,XIA Xian-zhu2,3,4*   

  1. (1.College of Animal Science and Technology,Jilin Agricultural University,Changchun 130118,China;2.Key Laboratory of Zoonosis Prevention and Control of Jilin Province,Military Veterinary Institute of the Academy of Military Medical Sciences,Changchun 130122,China;3.Changchun Veterinary Research Institute,Chinese Academy of Agricultural Sciences,Changchun 130122,China;4.Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonosis,Yangzhou 225009,China)
  • Received:2014-09-28 Online:2015-06-23 Published:2015-06-23

Abstract:

The objectives of this study were to express the native structure of fusion protein (F) and hemagglutinin glycoprotein (H) of canine distemper virus (CDV).The F and H gene of lesser panda attenuated strain were amplified by PCR and cloned into pFastBacTM1 vector.The recombinant plasmids were sequenced,and then were transformed into competent DH10BacTM E.coli cells to construct shuttle plasmids,rBacmid F and rBacmid H,by homologous recombination.The recombinant plasmids were then transfected into Sf9 cells to construct recombinant baculoviruses and the expression products of rF and rH were identified with IFA and Western blot.The expression of rF and rH in insect cells infected with recombinant baculoviruses were identified by IFA with dog anti-CDV hyperimmune serum and were detected by Western blot with mouse polyclonal antibody against F and H major epitopes of CDV.The molecular weight of expressed F and H protein were identified as 63 and 68 kD,which were consistent with the expected value.The results show that both envelope glycoproteins are successfully expressed in baculovirus-insect cell expression system and have a good immunoreactivity.Our study laid the foundation for the development of the CDV virus-like particle vaccine.

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