Measurement of anti-influenza neuraminidase antibody using a peroxidase-linked lectin and microtitre plates coated with natural substrates
| Autor: | Anne Greffard, Claude R. Lambré, H Terzidis, Robert G. Webster |
|---|---|
| Rok vydání: | 1990 |
| Předmět: |
Peanut agglutinin
Immunology Orthomyxoviridae Neuraminidase Epitope Peanut Agglutinin chemistry.chemical_compound Antibody Specificity Gangliosides Lectins Animals Humans Immunology and Allergy Peroxidase Binding Sites biology Chemistry musculoskeletal neural and ocular physiology Lectin Thiobarbiturates biology.organism_classification Antibodies Bacterial Molecular biology Fetuin N-Acetylneuraminic Acid Sialic acid Influenza B virus Biochemistry Influenza A virus Influenza Vaccines biological sciences Immunologic Techniques Sialic Acids cardiovascular system biology.protein alpha-Fetoproteins tissues N-Acetylneuraminic acid |
| Zdroj: | Journal of Immunological Methods. 135:49-57 |
| ISSN: | 0022-1759 |
| DOI: | 10.1016/0022-1759(90)90255-t |
| Popis: | Neuraminidase-induced removal of sialic acid from natural substrates (desialylation) unmasks saccharides that are specifically recognized by the lectin peanut agglutinin (PNA). We demonstrate that, when a neuraminidase substrate is coated on to the wells of a microplate, it is possible to quantitate the binding of PNA to the desialylated substrate using a peroxidase-conjugated PNA (Po-PNA). The amount of bound PNA correlated directly with the amount of sialic acid removed from the substrate and therefore with the neuraminidase activity. By reacting with specific epitopes that are located near to the enzyme active site, anti-neuraminidase antibodies are capable of inhibiting the virus-induced desialylation of the substrate. Such antibodies therefore reduce the binding of Po-PNA. The advantage of this assay is that since different natural substrates for neuraminidase (erythrocytes, fetuin or gangliosides) can be used to coat the microplates, the capacity of anti-neuraminidase antibody to inhibit the neuraminidase activity towards different types of sialoglycoconjugates can be evaluated. Anti-hemagglutinin or non-specific anti-neuraminidase antibody have no interfering reactivity. |
| Databáze: | OpenAIRE |
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