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Simultaneous purification of influenza haemagglutinin and neuraminidase proteins by immunochromatography

Identifieur interne : 000A98 ( Istex/Corpus ); précédent : 000A97; suivant : 000A99

Simultaneous purification of influenza haemagglutinin and neuraminidase proteins by immunochromatography

Auteurs : L. Gerantes ; N. Kessler ; G. Thomas ; M. Aymard

Source :

RBID : ISTEX:334A580D5E80A7E8026E109426608FEFE7784700

English descriptors

Abstract

Abstract: A new and rapid method for co-purification of haemagglutinin (HA) and neuraminidase (NA) proteins from influenza A/H3N2 virases is described. Surface glycoproteins were first solubilized using a non-ionic detergent under high ionic strength conditions, then they were separated by chromatography on sepharose previously bound to monoclonal antibodies (MAbs) directed either against HA (IaH-chromatography) or against NA (IaN-chromatography). Depending on the protein specificity of the MAb immobilized on the column, HA or NA was bound to sepharose and the counterpart protein was free in the flow-through volume. laH-chromatography and IaN-chromatography proved equally efficient in term of recoveries (> 75%) and purity (≥ 99%) of both HA and NA but differences appeared when considering functional and antigenic properties of pure proteins. Those properties were highly retained in IaH- and IaN-derived HA as well as in IaH-derived NA while IaN-NA was partially degraded. laH-chromatography allowed the co-purification of HA and NA proteins in heterologous antigen-antibody system with a 50% rate of cross reactivity. IaH-HA and IaH-NA may be suitable for immunity studies, standardization of influenza vaccine and for diagnostic purposes.

Url:
DOI: 10.1016/0166-0934(96)02006-X

Links to Exploration step

ISTEX:334A580D5E80A7E8026E109426608FEFE7784700

Le document en format XML

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<p>Abstract: A new and rapid method for co-purification of haemagglutinin (HA) and neuraminidase (NA) proteins from influenza A/H3N2 virases is described. Surface glycoproteins were first solubilized using a non-ionic detergent under high ionic strength conditions, then they were separated by chromatography on sepharose previously bound to monoclonal antibodies (MAbs) directed either against HA (IaH-chromatography) or against NA (IaN-chromatography). Depending on the protein specificity of the MAb immobilized on the column, HA or NA was bound to sepharose and the counterpart protein was free in the flow-through volume. laH-chromatography and IaN-chromatography proved equally efficient in term of recoveries (> 75%) and purity (≥ 99%) of both HA and NA but differences appeared when considering functional and antigenic properties of pure proteins. Those properties were highly retained in IaH- and IaN-derived HA as well as in IaH-derived NA while IaN-NA was partially degraded. laH-chromatography allowed the co-purification of HA and NA proteins in heterologous antigen-antibody system with a 50% rate of cross reactivity. IaH-HA and IaH-NA may be suitable for immunity studies, standardization of influenza vaccine and for diagnostic purposes.</p>
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<ce:simple-para>A new and rapid method for co-purification of haemagglutinin (HA) and neuraminidase (NA) proteins from influenza A/H3N2 virases is described. Surface glycoproteins were first solubilized using a non-ionic detergent under high ionic strength conditions, then they were separated by chromatography on sepharose previously bound to monoclonal antibodies (MAbs) directed either against HA (IaH-chromatography) or against NA (IaN-chromatography). Depending on the protein specificity of the MAb immobilized on the column, HA or NA was bound to sepharose and the counterpart protein was free in the flow-through volume. laH-chromatography and IaN-chromatography proved equally efficient in term of recoveries (> 75%) and purity (≥ 99%) of both HA and NA but differences appeared when considering functional and antigenic properties of pure proteins. Those properties were highly retained in IaH- and IaN-derived HA as well as in IaH-derived NA while IaN-NA was partially degraded. laH-chromatography allowed the co-purification of HA and NA proteins in heterologous antigen-antibody system with a 50% rate of cross reactivity. IaH-HA and IaH-NA may be suitable for immunity studies, standardization of influenza vaccine and for diagnostic purposes.</ce:simple-para>
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<abstract lang="en">Abstract: A new and rapid method for co-purification of haemagglutinin (HA) and neuraminidase (NA) proteins from influenza A/H3N2 virases is described. Surface glycoproteins were first solubilized using a non-ionic detergent under high ionic strength conditions, then they were separated by chromatography on sepharose previously bound to monoclonal antibodies (MAbs) directed either against HA (IaH-chromatography) or against NA (IaN-chromatography). Depending on the protein specificity of the MAb immobilized on the column, HA or NA was bound to sepharose and the counterpart protein was free in the flow-through volume. laH-chromatography and IaN-chromatography proved equally efficient in term of recoveries (> 75%) and purity (≥ 99%) of both HA and NA but differences appeared when considering functional and antigenic properties of pure proteins. Those properties were highly retained in IaH- and IaN-derived HA as well as in IaH-derived NA while IaN-NA was partially degraded. laH-chromatography allowed the co-purification of HA and NA proteins in heterologous antigen-antibody system with a 50% rate of cross reactivity. IaH-HA and IaH-NA may be suitable for immunity studies, standardization of influenza vaccine and for diagnostic purposes.</abstract>
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