Toxin-neutralizing properties of antibodies to diphtheria toxin recombinant subunits A and B and A new method of their estimation

Andrii Kaberniuk, O. S. Oliinyk, D. V. Kolibo, S. V. Komisarenko

Research output: Contribution to journalArticle

Abstract

Development of complications during diphtheria depends to a large extent on toxin-neutralizing antibodies level in the patient's blood. Active immunization of people with diphtheria anatoxin is widely used for diphtheria prevention and passive immunization with hyperimmune antitoxic horse serum is used for diphtheria treatment. A traditional component of anti-diphtheria vaccines - diphtheria anatoxin has a number of serious disadvantages, which are mainly associated with complicated procedure of its production. Thus, the search for new antigen substances, which can effectively stimulate protective humoral response to diphtheria toxin, is an urgent task in anti-diphtheria vaccine development. Furthermore, one of the most important objects is the development of new in vitro methods for estimation of diphtheria toxinneutralizing polyclonal and monoclonal antibodies, which allow to avoid using active diphtheria toxin and toxin-sensitive laboratory animals. Comparative studies of toxin-neutralizing antibodies induction after immunization of laboratory animals with recombinant subunits A and B of diphtheria toxin were carried out. The new method for detection of protective antibodies in serum was proposed. This method is based on the ToBI test (Toxin Binding Inhibition test); namely on the property of anti-diphtheria antibodies to inhibit the biding of toxin subunit B fused with enhanced green fluorescent protein (EGF P) to the sensitive to diphtheria toxin Vero cells. The ability of subunit B to induce toxin-neutralizing antibodiesin laboratory animals (rabbits and guineapigs) was confirmed by the intradermal test, which is traditionally used to detect protective antitoxic antibodies in the serum, and by flow cytometry method, developed for this purpose. The results suggest that diphtheria toxin recombinant subunit B may be used for the induction of the protective immune response. The new developed approach for estimation diphtheria toxin-neutralizing antibodies is more ethical and safe and can substitute successfully the traditional methods.

Original languageEnglish (US)
Pages (from-to)92-101
Number of pages10
JournalUkrain'skyi Biokhimichnyi Zhurnal
Volume83
Issue number3
StatePublished - 2011
Externally publishedYes

Fingerprint

Diphtheria Toxin
Diphtheria
Neutralizing Antibodies
Immunization
Laboratory Animals
Diphtheria Toxoid
Animals
Antibodies
Serum
Flow cytometry
Intradermal Tests
Vero Cells
Passive Immunization
Blood
Horses
Monoclonal Antibodies
Anti-Idiotypic Antibodies
Flow Cytometry
Vaccination
Antigens

Keywords

  • Diphtheria
  • Diphtheria toxin recombinant subunits
  • Flow cytometry
  • Fluorescent probe
  • Method for detection of protective antibodies
  • Protective immunity
  • Toxin-neutralazingantibodies

ASJC Scopus subject areas

  • Biochemistry

Cite this

Toxin-neutralizing properties of antibodies to diphtheria toxin recombinant subunits A and B and A new method of their estimation. / Kaberniuk, Andrii; Oliinyk, O. S.; Kolibo, D. V.; Komisarenko, S. V.

In: Ukrain'skyi Biokhimichnyi Zhurnal, Vol. 83, No. 3, 2011, p. 92-101.

Research output: Contribution to journalArticle

Kaberniuk, Andrii ; Oliinyk, O. S. ; Kolibo, D. V. ; Komisarenko, S. V. / Toxin-neutralizing properties of antibodies to diphtheria toxin recombinant subunits A and B and A new method of their estimation. In: Ukrain'skyi Biokhimichnyi Zhurnal. 2011 ; Vol. 83, No. 3. pp. 92-101.
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