In vitro evolution of H5N1 avian influenza virus toward human-type receptor specificity
Identifieur interne : 000C99 ( Main/Exploration ); précédent : 000C98; suivant : 000D00In vitro evolution of H5N1 avian influenza virus toward human-type receptor specificity
Auteurs : Li-Mei Chen [États-Unis] ; Ola Blixt [États-Unis] ; James Stevens [États-Unis] ; Aleksandr S. Lipatov [États-Unis] ; Charles T. Davis [États-Unis] ; Brian E. Collins [États-Unis] ; Nancy J. Cox [États-Unis] ; James C. Paulson [États-Unis] ; Ruben O. Donis [États-Unis]Source :
- Virology [ 0042-6822 ] ; 2011.
Abstract
Acquisition of α2-6 sialoside receptor specificity by α2-3 specific highly-pathogenic avian influenza viruses (H5N1) is thought to be a prerequisite for efficient transmission in humans. By in vitro selection for binding α2-6 sialosides, we identified four variant viruses with amino acid substitutions in the hemagglutinin (S227N, D187G, E190G, and Q196R) that revealed modestly increased α2-6 and minimally decreased α2-3 binding by glycan array analysis. However, a mutant virus combining Q196R with mutations from previous pandemic viruses (Q226L and G228S) revealed predominantly α2-6 binding. Unlike the wild type H5N1, this mutant virus was transmitted by direct contact in the ferret model although not by airborne respiratory droplets. However, a reassortant virus with the mutant hemagglutinin, a human N2 neuraminidase and internal genes from an H5N1 virus was partially transmitted via respiratory droplets. The complex changes required for airborne transmissibility in ferrets suggest that extensive evolution is needed for H5N1 transmissibility in humans.
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DOI: 10.1016/j.virol.2011.10.006
PubMed: 22056389
PubMed Central: 5480292
Affiliations:
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Davis</name><affiliation wicri:level="2"><nlm:aff id="A1">Influenza Division, Centers for Disease Control and Prevention, 1600 Clifton Road, Atlanta, GA 30333, United States</nlm:aff><country xml:lang="fr">États-Unis</country><wicri:regionArea>Influenza Division, Centers for Disease Control and Prevention, 1600 Clifton Road, Atlanta, GA 30333</wicri:regionArea><placeName><region type="state">Géorgie (États-Unis)</region></placeName></affiliation></author><author><name sortKey="Collins, Brian E" sort="Collins, Brian E" uniqKey="Collins B" first="Brian E." last="Collins">Brian E. Collins</name><affiliation wicri:level="2"><nlm:aff id="A2">Department of Chemical Physiology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037, United States</nlm:aff><country xml:lang="fr">États-Unis</country><wicri:regionArea>Department of Chemical Physiology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037</wicri:regionArea><placeName><region type="state">Californie</region></placeName></affiliation><affiliation wicri:level="2"><nlm:aff id="A4">Glycan Array Synthesis Core-D, Consortium for Functional Glycomics, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037, United States</nlm:aff><country xml:lang="fr">États-Unis</country><wicri:regionArea>Glycan Array Synthesis Core-D, Consortium for Functional Glycomics, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037</wicri:regionArea><placeName><region type="state">Californie</region></placeName></affiliation></author><author><name sortKey="Cox, Nancy J" sort="Cox, Nancy J" uniqKey="Cox N" first="Nancy J." last="Cox">Nancy J. Cox</name><affiliation wicri:level="2"><nlm:aff id="A1">Influenza Division, Centers for Disease Control and Prevention, 1600 Clifton Road, Atlanta, GA 30333, United States</nlm:aff><country xml:lang="fr">États-Unis</country><wicri:regionArea>Influenza Division, Centers for Disease Control and Prevention, 1600 Clifton Road, Atlanta, GA 30333</wicri:regionArea><placeName><region type="state">Géorgie (États-Unis)</region></placeName></affiliation></author><author><name sortKey="Paulson, James C" sort="Paulson, James C" uniqKey="Paulson J" first="James C." last="Paulson">James C. Paulson</name><affiliation wicri:level="2"><nlm:aff id="A2">Department of Chemical Physiology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037, United States</nlm:aff><country xml:lang="fr">États-Unis</country><wicri:regionArea>Department of Chemical Physiology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037</wicri:regionArea><placeName><region type="state">Californie</region></placeName></affiliation><affiliation wicri:level="2"><nlm:aff id="A4">Glycan Array Synthesis Core-D, Consortium for Functional Glycomics, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037, United States</nlm:aff><country xml:lang="fr">États-Unis</country><wicri:regionArea>Glycan Array Synthesis Core-D, Consortium for Functional Glycomics, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037</wicri:regionArea><placeName><region type="state">Californie</region></placeName></affiliation></author><author><name sortKey="Donis, Ruben O" sort="Donis, Ruben O" uniqKey="Donis R" first="Ruben O." last="Donis">Ruben O. Donis</name><affiliation wicri:level="2"><nlm:aff id="A1">Influenza Division, Centers for Disease Control and Prevention, 1600 Clifton Road, Atlanta, GA 30333, United States</nlm:aff><country xml:lang="fr">États-Unis</country><wicri:regionArea>Influenza Division, Centers for Disease Control and Prevention, 1600 Clifton Road, Atlanta, GA 30333</wicri:regionArea><placeName><region type="state">Géorgie (États-Unis)</region></placeName></affiliation></author></analytic><series><title level="j">Virology</title><idno type="ISSN">0042-6822</idno><idno type="eISSN">1096-0341</idno><imprint><date when="2011">2011</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en"><p id="P1">Acquisition of α2-6 sialoside receptor specificity by α2-3 specific highly-pathogenic avian influenza viruses (H5N1) is thought to be a prerequisite for efficient transmission in humans. By in vitro selection for binding α2-6 sialosides, we identified four variant viruses with amino acid substitutions in the hemagglutinin (S227N, D187G, E190G, and Q196R) that revealed modestly increased α2-6 and minimally decreased α2-3 binding by glycan array analysis. However, a mutant virus combining Q196R with mutations from previous pandemic viruses (Q226L and G228S) revealed predominantly α2-6 binding. Unlike the wild type H5N1, this mutant virus was transmitted by direct contact in the ferret model although not by airborne respiratory droplets. However, a reassortant virus with the mutant hemagglutinin, a human N2 neuraminidase and internal genes from an H5N1 virus was partially transmitted via respiratory droplets. The complex changes required for airborne transmissibility in ferrets suggest that extensive evolution is needed for H5N1 transmissibility in humans.</p></div></front></TEI><affiliations><list><country><li>États-Unis</li></country><region><li>Californie</li><li>Géorgie (États-Unis)</li></region></list><tree><country name="États-Unis"><region name="Géorgie (États-Unis)"><name sortKey="Chen, Li Mei" sort="Chen, Li Mei" uniqKey="Chen L" first="Li-Mei" last="Chen">Li-Mei Chen</name></region><name sortKey="Blixt, Ola" sort="Blixt, Ola" uniqKey="Blixt O" first="Ola" last="Blixt">Ola Blixt</name><name sortKey="Blixt, Ola" sort="Blixt, Ola" uniqKey="Blixt O" first="Ola" last="Blixt">Ola Blixt</name><name sortKey="Collins, Brian E" sort="Collins, Brian E" uniqKey="Collins B" first="Brian E." last="Collins">Brian E. Collins</name><name sortKey="Collins, Brian E" sort="Collins, Brian E" uniqKey="Collins B" first="Brian E." last="Collins">Brian E. Collins</name><name sortKey="Cox, Nancy J" sort="Cox, Nancy J" uniqKey="Cox N" first="Nancy J." last="Cox">Nancy J. Cox</name><name sortKey="Davis, Charles T" sort="Davis, Charles T" uniqKey="Davis C" first="Charles T." last="Davis">Charles T. Davis</name><name sortKey="Donis, Ruben O" sort="Donis, Ruben O" uniqKey="Donis R" first="Ruben O." last="Donis">Ruben O. Donis</name><name sortKey="Lipatov, Aleksandr S" sort="Lipatov, Aleksandr S" uniqKey="Lipatov A" first="Aleksandr S." last="Lipatov">Aleksandr S. Lipatov</name><name sortKey="Paulson, James C" sort="Paulson, James C" uniqKey="Paulson J" first="James C." last="Paulson">James C. Paulson</name><name sortKey="Paulson, James C" sort="Paulson, James C" uniqKey="Paulson J" first="James C." last="Paulson">James C. Paulson</name><name sortKey="Stevens, James" sort="Stevens, James" uniqKey="Stevens J" first="James" last="Stevens">James Stevens</name><name sortKey="Stevens, James" sort="Stevens, James" uniqKey="Stevens J" first="James" last="Stevens">James Stevens</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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