Development of Actinobacillus pleuropneumoniae ApxI, ApxII, and ApxIII-specific ELISA methods for evaluation of vaccine efficiency
- Author:
Myunghwan JUNG
1
;
Hokeun WON
;
Min Kyoung SHIN
;
Myung Whan OH
;
Soojin SHIM
;
Injoong YOON
;
Han Sang YOO
Author Information
- Publication Type:Original Article
- Keywords: Actinobacillus pleuropneumoniae; Apx toxins; vaccines, subunit; ELISA
- MeSH: Actinobacillus pleuropneumoniae; Actinobacillus; Animals; Antibodies; Blotting, Western; Clone Cells; Enzyme-Linked Immunosorbent Assay; Guinea Pigs; Methods; Recombinant Proteins; Vaccines; Vaccines, Subunit
- From:Journal of Veterinary Science 2019;20(2):e2-
- CountryRepublic of Korea
- Language:English
- Abstract: Among various vaccines against Actinobacillus pleuropneumoniae, subunit vaccines using recombinant proteins of ApxI, ApxII, and ApxIII as vaccine antigens have shown good efficacy in terms of safety and protection. Therefore, subunit vaccines are being applied worldwide and the development of new subunit vaccines is actively being conducted. To evaluate the efficacy of the subunit vaccines, it is important to measure immune responses to each Apx toxin separately. However, the cross-reactivity of antibodies makes it difficult to measure specific immune reactivity to each toxin. In the present study, specific antigen regions among the toxins were identified and cloned to solve this problem. The antigenicity of each recombinant protein was demonstrated by Western blot. Using the recombinant proteins, we developed enzyme-linked immunosorbent assay (ELISA) methods that can detect specific immune responses to each Apx toxin in laboratory guinea pigs. We suggest that the ELISA method developed in this study can be an important tool in the evaluation of vaccine efficiency and vaccine development.
