Adjuvant-dependent immunogenicity of Staphylococcus aureus Efb and Map proteins in chickens

作者：Grzywa Renata; Walczak Maciej; Lupicka Slowik Agnieszka; Bobrek Kamila; Boivin Stephane; Brown Eric L; Gawel Andrzej; Stefaniak Tadeusz; Oleksyszyn Jozef; Sienczyk Marcin^*

来源：Veterinary Immunology and Immunopathology, 2015, 166(1-2): 50-56.

DOI：10.1016/j.vetimm.2015.04.009

• Staphylococcus aureus
• MHC class II analog protein
• Extracellular fibrinogen binding protein
• Immunoglobulin Y
• Adjuvant

The avian IgY antibodies generated in hens and isolated from egg yolk have gained in popularity as they present an alternative source of antibodies for diagnostic as well as therapeutic applications. One of the advantages of IgY technology are the large amounts of produced antibodies from a single animal combined with their high reactivity representing an attractive alternative for mammalian antibodies. Despite many known protocols for the immunization of chickens, the administration of new antigens often requires additional modification such as antigen dose or use of an adjuvant in order to elicit a significant immune response.
We investigated the immunogenicity of three Staphylococcus aureus antigens including two extracellular proteins Map and Efb and one selected Efb(105-124) epitope conjugated to KLH that were administered to the animals. Additionally, the immunization protocol included two adjuvant systems: Freund's complete adjuvant and Emulsigen-D. The results demonstrated a high immunostimulatory potency of Freund's complete adjuvant, especially in case of Efb compared to the immune response elicited by Emulsigen-D. However, after immunization with the KLH-Efb(105-124) conjugate, the obtained antibodies showed similar reactivity regardless of adjuvant system used with the only exception being their avidity.

• 出版日期2015-7-15