期刊
ANIMALS
卷 13, 期 19, 页码 -出版社
MDPI
DOI: 10.3390/ani13193130
关键词
chicken IgG; immunoglobulin Y; affinity maturation; immunochemistry
IgY antibodies, found in the blood and yolk of eggs, have shown potential for immunotherapy and immunodiagnosis. This review examines the factors influencing the affinity and avidity of IgY antibodies and the methods used to determine these variables. More research is needed to standardize methodologies and optimize the production of high avidity IgY antibodies.
IgY antibodies are found in the blood and yolk of eggs. Several studies show the feasibility of utilising IgY for immunotherapy and immunodiagnosis. These antibodies have been studied because they fulfil the current needs for reducing, replacing, and improving the use of animals. Affinity and avidity represent the strength of the antigen-antibody interaction and directly influence antibody action. The aim of this review was to examine the factors that influence the affinity and avidity of IgY antibodies and the methodologies used to determine these variables. In birds, there are few studies on the maturation of antibody affinity and avidity, and these studies suggest that the use of an adjuvant-type of antigen, the animal lineage, the number of immunisations, and the time interfered with the affinity and avidity of IgY antibodies. Regarding the methodologies, most studies use chaotropic agents to determine the avidity index. Studies involving the solution phase and equilibrium titration reactions are also described. These results demonstrate the need for the standardisation of methodologies for the determination of affinity and avidity so that further studies can be performed to optimise the production of high avidity IgY antibodies.
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