Sialic Acid Species as a Determinant of the Host Range of Influenza A Viruses
Identifieur interne : 001899 ( Main/Exploration ); précédent : 001898; suivant : 001900Sialic Acid Species as a Determinant of the Host Range of Influenza A Viruses
Auteurs : Yasuo Suzuki ; Toshihiro Ito ; Takashi Suzuki ; Robert E. Holland ; Thomas M. Chambers ; Makoto Kiso ; Hideharu Ishida ; Yoshihiro Kawaoka [États-Unis]Source :
- Journal of Virology [ 0022-538X ] ; 2000.
Abstract
The distribution of sialic acid (SA) species varies among animal species, but the biological role of this variation is largely unknown. Influenza viruses differ in their ability to recognize SA-galactose (Gal) linkages, depending on the animal hosts from which they are isolated. For example, human viruses preferentially recognize SA linked to Gal by the α2,6(SAα2,6Gal) linkage, while equine viruses favor SAα2,3Gal. However, whether a difference in relative abundance of specific SA species (
Url:
PubMed: 11090182
PubMed Central: 112465
Affiliations:
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Le document en format XML
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<front><div type="abstract" xml:lang="en"><p>The distribution of sialic acid (SA) species varies among animal species, but the biological role of this variation is largely unknown. Influenza viruses differ in their ability to recognize SA-galactose (Gal) linkages, depending on the animal hosts from which they are isolated. For example, human viruses preferentially recognize SA linked to Gal by the α2,6(SAα2,6Gal) linkage, while equine viruses favor SAα2,3Gal. However, whether a difference in relative abundance of specific SA species (<italic>N</italic>
-acetylneuraminic acid [NeuAc] and <italic>N</italic>
-glycolylneuraminic acid [NeuGc]) among different animals affects the replicative potential of influenza viruses is uncertain. We therefore examined the requirement for the hemagglutinin (HA) for support of viral replication in horses, using viruses whose HAs differ in receptor specificity. A virus with an HA recognizing NeuAcα2,6Gal but not NeuAcα2,3Gal or NeuGcα2,3Gal failed to replicate in horses, while one with an HA recognizing the NeuGcα2,3Gal moiety replicated in horses. Furthermore, biochemical and immunohistochemical analyses and a lectin-binding assay demonstrated the abundance of the NeuGcα2,3Gal moiety in epithelial cells of horse trachea, indicating that recognition of this moiety is critical for viral replication in horses. Thus, these results provide evidence of a biological effect of different SA species in different animals.</p>
</div>
</front>
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<tree><noCountry><name sortKey="Chambers, Thomas M" sort="Chambers, Thomas M" uniqKey="Chambers T" first="Thomas M." last="Chambers">Thomas M. Chambers</name>
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<name sortKey="Ishida, Hideharu" sort="Ishida, Hideharu" uniqKey="Ishida H" first="Hideharu" last="Ishida">Hideharu Ishida</name>
<name sortKey="Ito, Toshihiro" sort="Ito, Toshihiro" uniqKey="Ito T" first="Toshihiro" last="Ito">Toshihiro Ito</name>
<name sortKey="Kiso, Makoto" sort="Kiso, Makoto" uniqKey="Kiso M" first="Makoto" last="Kiso">Makoto Kiso</name>
<name sortKey="Suzuki, Takashi" sort="Suzuki, Takashi" uniqKey="Suzuki T" first="Takashi" last="Suzuki">Takashi Suzuki</name>
<name sortKey="Suzuki, Yasuo" sort="Suzuki, Yasuo" uniqKey="Suzuki Y" first="Yasuo" last="Suzuki">Yasuo Suzuki</name>
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<country name="États-Unis"><region name="Wisconsin"><name sortKey="Kawaoka, Yoshihiro" sort="Kawaoka, Yoshihiro" uniqKey="Kawaoka Y" first="Yoshihiro" last="Kawaoka">Yoshihiro Kawaoka</name>
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