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Antibody response to rubella virus proteins in different physical forms
Antiviral Research
|December 1, 1982
Summary
Whole rubella virus, live or inactivated, effectively induced hemagglutination inhibition (HAI) antibodies in rabbits. However, extracted rubella virus hemagglutinin antigens failed to elicit an antibody response, suggesting antigenicity loss during preparation.
Area of Science:
- Virology
- Immunology
- Vaccine Development
Background:
- Rubella virus hemagglutinating (HA) membrane protein is crucial for vaccine development.
- Understanding the immunogenicity of different antigen preparations is essential for effective rubella vaccines.
Purpose of the Study:
- To evaluate the immunogenicity of various rubella virus antigen preparations.
- To determine the impact of antigen extraction on the induction of hemagglutination inhibiting (HAI) antibodies.
Main Methods:
- Studied immunogenicity using live rubella virus, inactivated virus, detergent-extracted octamers, and virosomes.
- Administered antigens subcutaneously to rabbits and measured HAI antibody induction.
Main Results:
- Whole virus particles (live or inactivated) induced HAI antibodies at a low dose (0.16 µg HA protein).
- Extracted hemagglutinin antigens (rosettes, virosomes) failed to induce antibodies, even at high doses (120 µg).
Conclusions:
- Extraction of rubella viral membrane hemagglutinin for subunit vaccines may destroy critical antigenicity.
- Preserving the structural integrity of hemagglutinin is vital for inducing protective HAI antibodies.