Surface display of Aeromonas hydrophila GAPDH in attenuated Vibrio anguillarum to develop a Noval multivalent vector vaccine.
Displaying foreign antigens on the surface of attenuated or avirulent bacteria is an important strategy to develop live multivalent vector vaccines. In our previous work, several efficient surface display systems have been established based on outer membrane anchoring elements, which could successfully display heterologous proteins in attenuated Vibrio anguillarum. In this work, the glyceraldehyde-3-phosphate dehydrogenase (GAPDH) from pathogenic Aeromonas hydrophila LSA34 was fused to seven display systems and introduced into attenuated V. anguillarum strain MVAV6203 (AV) to get seven GAPDH-display strains. The strain AV/pN-gapA showed the best display efficacy of GAPDH and was tested as the multivalent vaccine candidate. Further immune protection evaluation of AV/pN-gapA in turbot (Scophtalmus maximus) demonstrated that the attenuated V. anguillarum with surface-displayed GAPDH of A. hydrophila LSA34 effectively protected turbot from the infections of A. hydrophila and V. anguillarum and showed potential value for further multivalent vaccine development.
State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, China.
Yan
Y
Zhao
Qin
Q
Liu
Xiuhua
X
Wang
Lingyun
L
Zhou
Qiyao
Q
Wang
Yuanxing
Y
Zhang
D016980:Aeromonas hydrophila / Q000378:metabolism*; D000818:Animals; D001428:Bacterial Vaccines / Q000276:immunology*; D005393:Fish Diseases / Q000517:prevention & control*; D005412:Flatfishes; D015964:Gene Expression Regulation, Bacterial; D024581:Glyceraldehyde-3-Phosphate Dehydrogenase (Phosphorylating) / Q000276:immunology / Q000378:metabolism*; D016905:Gram-Negative Bacterial Infections / Q000517:prevention & control / Q000662:veterinary*; D014733:Vibrio / Q000276:immunology / Q000378:metabolism*
D001428:Bacterial Vaccines; D024581:Glyceraldehyde-3-Phosphate Dehydrogenase (Phosphorylating)
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