China Animal Husbandry and Veterinary Medicine ›› 2019, Vol. 46 ›› Issue (9): 2691-2698.doi: 10.16431/j.cnki.1671-7236.2019.09.024

• Preventive Veterinary Medicine • Previous Articles     Next Articles

Establishment of a Method of IPMA for Detection of the Monoclonal Antibody Against H1N1 Swine Influenza Virus

SHI Jianzhou1,2,3, LI Qingmei1, WANG Yanhong1, LIU Xiao1,2, LI Ge1,2, GUO Junqing1, DENG Ruiguang1, ZHANG Gaiping1,2,4   

  1. 1. Key Laboratory of Animal Immunology, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China;
    2. Henan Agricultural University, Zhengzhou 450002, China;
    3. Nanyang Normal University, Nanyang 473061, China;
    4. Jiangsu Co-innovation Center for Prevention and Control of Important Animal Infectious Diseases and Zoonoses, Yangzhou University, Yangzhou 225009, China
  • Received:2019-04-15 Online:2019-09-20 Published:2019-09-21

Abstract: This experiment was aimed to establish an immunoperoxidase monolayer assay (IPMA) screening method for the detection of anti-H1N1 subtype swine influenza virus monoclonal antibody.The specificity,sensitivity and reproducibility of the established IPMA screening method were evaluated by optimizing the reaction conditions of MDCK cells,culture time after cell inoculation,type of blocking solution,working concentration and working time.The results showed that the optimal reaction conditions for the established IPMA were MDCK cells with 102.63 TCID50/100 μL H1N1 subtype swine influenza virus,cultured at 37℃ for 24 h,3 ‰ H2O2 methanol fixed at room temperature for 15 min,5% skim milk blocking for 2 h at 37℃,50 μL of hybridoma cell supernatant was used as primary antibody,incubated at 37℃ for 2 h,and goat anti-mouse HRP-IgG secondary antibody was incubated at 37℃ for 1 h.The established IPMA method could specifically detect H1N1 subtype swine influenza virus monoclonal antibodies,and did not cross-react with porcine reproductive and respiratory syndrome virus (PRRSV),porcine circovirus type 2 (PCV2) and swine fever virus (CSFV) positive serum.The sensitivity test results showed that 1:3 200 HI=2-9 standard H1N1 swine positive serum could be detected;The repeatability test between inter-batch and intra-batch was good.In summary,this experiment successfully established an IPMA detection method for anti-H1N1 subtype swine influenza virus monoclonal antibody,which had strong specificity,high sensitivity and good reproducibility,and provided a simple,practical and effective detection method for the production of monoclonal antibodies against H1N1 subtype swine influenza virus.

Key words: H1N1 subtype swine influenza virus; immunoperoxidase monolayer assay (IPMA); monoclonal antibody

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