ANALYSIS OF EFFECTIVENESS OF USING IgY FROM CHICKEN IN SANDWICH METHOD OF HBsAg TESTING

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Abstract

Aim. Study antigen-binding ability of polyclonal antibodies (PCA) of chicken compared with monoclonal antibodies (MCA) of mice in the model of interaction with HBsAg. Materials and methods. Mice MCA 18C8 and MKA F3/F4 (IgG) were used, effective in enzyme immunoassay sandwich method of HBsAg determination (with a minimal detection dose of 0.017 ng/ml), and affinity purified anti-HBsAg PCA of chicken (IgY), obtained from 2 immunized birds (PCA No. 1 and PCA No. 2). The ability of antibodies to bind HBsAg was evaluated by analytical sensitivity (slope of binding curve) of solid-phase enzyme immunoassay system using mice MCA and chicken PCA. Results. PCA No. 2 has provided a statistically significant 40% increase of analytical sensitivity, compared with «standard» immobilized MCA 18C8, in model experiments of binding of peroxidase-labeled HBsAg. However, transition from model experiments to use of PKA No. 1 and PICA No. 2 in sandwich method of determination of HBsAg instead of immobilized MCA 18C8 or detecting MCA F3/F4 in all the cases, on the contrary, resulted in a decrease of analytical sensitivity. Conclusion. A lower flexibility of chicken PCA was assumed to be able to impede bivalent interaction in sandwich method, resulting in formation of less stable immune complexes. Without challenging value of IgY for the creation of immunochemical diagnostic methods, these facts and assumptions indicate a necessity of a deeper elucidation of the best areas of their application.

About the authors

A. A. Pechelyulko

Mechnikov Research Institute of Vaccines and Sera

Author for correspondence.
Email: noemail@neicon.ru
Россия

Yu. N. Tarakanova

Mechnikov Research Institute of Vaccines and Sera

Email: noemail@neicon.ru
Россия

A. D. Dmitriev

Mechnikov Research Institute of Vaccines and Sera

Email: noemail@neicon.ru
Россия

Yu. S. Massino

Mechnikov Research Institute of Vaccines and Sera

Email: noemail@neicon.ru
Россия

O. L. Segal

Mechnikov Research Institute of Vaccines and Sera

Email: noemail@neicon.ru
Россия

V. F. Lavrov

Mechnikov Research Institute of Vaccines and Sera; Russian Medical Academy of Post-Graduate Education

Email: noemail@neicon.ru
Россия

D. A. Dmitriev

Mechnikov Research Institute of Vaccines and Sera

Email: noemail@neicon.ru
Россия

References

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Copyright (c) 2016 Pechelyulko A.A., Tarakanova Y.N., Dmitriev A.D., Massino Y.S., Segal O.L., Lavrov V.F., Dmitriev D.A.

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