Abstract:
:Proteus mirabilis (P. mirabilis) is a zoonotic pathogen that has recently presented a rising infection rate in the poultry industry. To develop an effective vaccine to protect chickens against P. mirabilis infection, OmpA, one of the major outer membrane proteins of P. mirabilis, was expressed in Pichia pastoris. The concentration of the expressed recombinant OmpA protein reached 8.0μg/mL after induction for 96h with 1.0% methanol in the culture. In addition, OmpA protein was confirmed by SDS-PAGE and Western blot analysis using the antibody against Escherichia coli-expressed OmpA protein. Taishan Pinus massoniana pollen polysaccharide, a known plant-derived adjuvant, was mixed into the recombinant OmpA protein to prepare the OmpA subunit vaccine. We then subcutaneously inoculated this vaccine into chickens to examine the immunoprotective effects. ELISA analysis indicated that an excellent antibody response against OmpA was elicited in the vaccinated chickens. Moreover, a high protection rate of 80.0% was observed in the vaccinated group, which was subsequently challenged with P. mirabilis. The results suggest that the eukaryotic P. mirabilis OmpA was an ideal candidate protein for developing an effective subunit vaccine against P. mirabilis infection.
journal_name
Protein Expr Purifjournal_title
Protein expression and purificationauthors
Zhang Y,Yang S,Dai X,Liu L,Jiang X,Shao M,Chi S,Wang C,Yu C,Wei K,Zhu Rdoi
10.1016/j.pep.2014.10.001subject
Has Abstractpub_date
2015-01-01 00:00:00pages
33-8eissn
1046-5928issn
1096-0279pii
S1046-5928(14)00226-5journal_volume
105pub_type
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