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Synergistic Adaptive Mutations in the Hemagglutinin and Polymerase Acidic Protein Lead to Increased Virulence of Pandemic 2009 H1N1 Influenza A Virus in Mice

Identifieur interne : 001C12 ( PascalFrancis/Curation ); précédent : 001C11; suivant : 001C13

Synergistic Adaptive Mutations in the Hemagglutinin and Polymerase Acidic Protein Lead to Increased Virulence of Pandemic 2009 H1N1 Influenza A Virus in Mice

Auteurs : Roman Seyer [France] ; Eike R. Hrincius [France] ; Dorothea Ritzel [Allemagne] ; Marion Abt [Allemagne] ; Alexander Mellmann [Allemagne] ; Henju Marjuki [États-Unis] ; Joachim Kühn [Allemagne] ; Thorsten Wolff [Allemagne] ; Stephan Ludwig [France] ; Christina Ehrhardt [France]

Source :

RBID : Pascal:13-0327095

Descripteurs français

English descriptors

Abstract

Influenza impressively reflects the paradigm of a viral disease in which continued evolution of the virus is of paramount importance for annual epidemics and occasional pandemics in humans. Because of the continuous threat of novel influenza outbreaks, it is essential to gather further knowledge about viral pathogenicity determinants. Here, we explored the adaptive potential of the influenza A virus subtype H1N1 variant isolate A/Hamburg/04/09 (HH/04) by sequential passaging in mice lungs. Three passages in mice lungs were sufficient to dramatically enhance pathogenicity of HH/04. Sequence analysis identified 4 nonsynonymous mutations in the third passage virus. Using reverse genetics, 3 synergistically acting mutations were defined as pathogenicity determinants, comprising 2 mutations in the hemagglutinin (HA[D222G] and HA[K163E]), whereby the HA(D222G) mutation was shown to determine receptor binding specificity and the polymerase acidic (PA) protein F35L mutation increasing polymerase activity. In conclusion, synergistic action of all 3 mutations results in a mice lethal pandemic H1N1 virus.
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A08 01  1  ENG  @1 Synergistic Adaptive Mutations in the Hemagglutinin and Polymerase Acidic Protein Lead to Increased Virulence of Pandemic 2009 H1N1 Influenza A Virus in Mice
A11 01  1    @1 SEYER (Roman)
A11 02  1    @1 HRINCIUS (Eike R.)
A11 03  1    @1 RITZEL (Dorothea)
A11 04  1    @1 ABT (Marion)
A11 05  1    @1 MELLMANN (Alexander)
A11 06  1    @1 MARJUKI (Henju)
A11 07  1    @1 KÜHN (Joachim)
A11 08  1    @1 WOLFF (Thorsten)
A11 09  1    @1 LUDWIG (Stephan)
A11 10  1    @1 EHRHARDT (Christina)
A14 01      @1 Institute of Molecular Virology, ZMBE @2 Muenster @3 FRA @Z 1 aut. @Z 2 aut. @Z 9 aut. @Z 10 aut.
A14 02      @1 Robert Koch Institute @2 Berlin @3 DEU @Z 3 aut. @Z 4 aut. @Z 8 aut.
A14 03      @1 Institute of Hygiene @2 Muenster @3 DEU @Z 5 aut.
A14 04      @1 Division of Virology, Department of Infectious Diseases, St Jude Children's Research Hospital @2 Memphis, Tennessee @3 USA @Z 6 aut.
A14 05      @1 Institute of Medical Microbiology, Clinical Virology @2 Muenster @3 DEU @Z 7 aut.
A20       @1 262-271
A21       @1 2012
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C01 01    ENG  @0 Influenza impressively reflects the paradigm of a viral disease in which continued evolution of the virus is of paramount importance for annual epidemics and occasional pandemics in humans. Because of the continuous threat of novel influenza outbreaks, it is essential to gather further knowledge about viral pathogenicity determinants. Here, we explored the adaptive potential of the influenza A virus subtype H1N1 variant isolate A/Hamburg/04/09 (HH/04) by sequential passaging in mice lungs. Three passages in mice lungs were sufficient to dramatically enhance pathogenicity of HH/04. Sequence analysis identified 4 nonsynonymous mutations in the third passage virus. Using reverse genetics, 3 synergistically acting mutations were defined as pathogenicity determinants, comprising 2 mutations in the hemagglutinin (HA[D222G] and HA[K163E]), whereby the HA(D222G) mutation was shown to determine receptor binding specificity and the polymerase acidic (PA) protein F35L mutation increasing polymerase activity. In conclusion, synergistic action of all 3 mutations results in a mice lethal pandemic H1N1 virus.
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C03 01  X  FRE  @0 Souris @5 01
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C03 02  X  FRE  @0 Synergie @5 05
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C03 03  X  ENG  @0 Mutation @5 06
C03 03  X  SPA  @0 Mutación @5 06
C03 04  X  FRE  @0 Hémagglutinine @5 07
C03 04  X  ENG  @0 Hemagglutinin @5 07
C03 04  X  SPA  @0 Hemoaglutinina @5 07
C03 05  X  FRE  @0 Protéine acide @5 08
C03 05  X  ENG  @0 Acidic protein @5 08
C03 05  X  SPA  @0 Proteína ácida @5 08
C03 06  X  FRE  @0 Pathologie expérimentale @5 09
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C03 09  X  SPA  @0 Adaptación @5 12
C03 10  X  FRE  @0 Virus grippal A(H1N1) @4 CD @5 97
C03 10  X  ENG  @0 Influenzavirus A(H1N1) @4 CD @5 97
C07 01  X  FRE  @0 Rodentia @2 NS
C07 01  X  ENG  @0 Rodentia @2 NS
C07 01  X  SPA  @0 Rodentia @2 NS
C07 02  X  FRE  @0 Mammalia @2 NS
C07 02  X  ENG  @0 Mammalia @2 NS
C07 02  X  SPA  @0 Mammalia @2 NS
C07 03  X  FRE  @0 Vertebrata @2 NS
C07 03  X  ENG  @0 Vertebrata @2 NS
C07 03  X  SPA  @0 Vertebrata @2 NS
N21       @1 308

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Pascal:13-0327095

Le document en format XML

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<s1>Division of Virology, Department of Infectious Diseases, St Jude Children's Research Hospital</s1>
<s2>Memphis, Tennessee</s2>
<s3>USA</s3>
<sZ>6 aut.</sZ>
</fA14>
<fA14 i1="05">
<s1>Institute of Medical Microbiology, Clinical Virology</s1>
<s2>Muenster</s2>
<s3>DEU</s3>
<sZ>7 aut.</sZ>
</fA14>
<fA20>
<s1>262-271</s1>
</fA20>
<fA21>
<s1>2012</s1>
</fA21>
<fA23 i1="01">
<s0>ENG</s0>
</fA23>
<fA43 i1="01">
<s1>INIST</s1>
<s2>2052</s2>
<s5>354000507709330150</s5>
</fA43>
<fA44>
<s0>0000</s0>
<s1>© 2013 INIST-CNRS. All rights reserved.</s1>
</fA44>
<fA45>
<s0>45 ref.</s0>
</fA45>
<fA47 i1="01" i2="1">
<s0>13-0327095</s0>
</fA47>
<fA60>
<s1>P</s1>
</fA60>
<fA61>
<s0>A</s0>
</fA61>
<fA64 i1="01" i2="1">
<s0>The Journal of infectious diseases</s0>
</fA64>
<fA66 i1="01">
<s0>GBR</s0>
</fA66>
<fC01 i1="01" l="ENG">
<s0>Influenza impressively reflects the paradigm of a viral disease in which continued evolution of the virus is of paramount importance for annual epidemics and occasional pandemics in humans. Because of the continuous threat of novel influenza outbreaks, it is essential to gather further knowledge about viral pathogenicity determinants. Here, we explored the adaptive potential of the influenza A virus subtype H1N1 variant isolate A/Hamburg/04/09 (HH/04) by sequential passaging in mice lungs. Three passages in mice lungs were sufficient to dramatically enhance pathogenicity of HH/04. Sequence analysis identified 4 nonsynonymous mutations in the third passage virus. Using reverse genetics, 3 synergistically acting mutations were defined as pathogenicity determinants, comprising 2 mutations in the hemagglutinin (HA[D222G] and HA[K163E]), whereby the HA(D222G) mutation was shown to determine receptor binding specificity and the polymerase acidic (PA) protein F35L mutation increasing polymerase activity. In conclusion, synergistic action of all 3 mutations results in a mice lethal pandemic H1N1 virus.</s0>
</fC01>
<fC02 i1="01" i2="X">
<s0>002A05C04</s0>
</fC02>
<fC03 i1="01" i2="X" l="FRE">
<s0>Souris</s0>
<s5>01</s5>
</fC03>
<fC03 i1="01" i2="X" l="ENG">
<s0>Mouse</s0>
<s5>01</s5>
</fC03>
<fC03 i1="01" i2="X" l="SPA">
<s0>Ratón</s0>
<s5>01</s5>
</fC03>
<fC03 i1="02" i2="X" l="FRE">
<s0>Synergie</s0>
<s5>05</s5>
</fC03>
<fC03 i1="02" i2="X" l="ENG">
<s0>Synergism</s0>
<s5>05</s5>
</fC03>
<fC03 i1="02" i2="X" l="SPA">
<s0>Sinergia</s0>
<s5>05</s5>
</fC03>
<fC03 i1="03" i2="X" l="FRE">
<s0>Mutation</s0>
<s5>06</s5>
</fC03>
<fC03 i1="03" i2="X" l="ENG">
<s0>Mutation</s0>
<s5>06</s5>
</fC03>
<fC03 i1="03" i2="X" l="SPA">
<s0>Mutación</s0>
<s5>06</s5>
</fC03>
<fC03 i1="04" i2="X" l="FRE">
<s0>Hémagglutinine</s0>
<s5>07</s5>
</fC03>
<fC03 i1="04" i2="X" l="ENG">
<s0>Hemagglutinin</s0>
<s5>07</s5>
</fC03>
<fC03 i1="04" i2="X" l="SPA">
<s0>Hemoaglutinina</s0>
<s5>07</s5>
</fC03>
<fC03 i1="05" i2="X" l="FRE">
<s0>Protéine acide</s0>
<s5>08</s5>
</fC03>
<fC03 i1="05" i2="X" l="ENG">
<s0>Acidic protein</s0>
<s5>08</s5>
</fC03>
<fC03 i1="05" i2="X" l="SPA">
<s0>Proteína ácida</s0>
<s5>08</s5>
</fC03>
<fC03 i1="06" i2="X" l="FRE">
<s0>Pathologie expérimentale</s0>
<s5>09</s5>
</fC03>
<fC03 i1="06" i2="X" l="ENG">
<s0>Experimental disease</s0>
<s5>09</s5>
</fC03>
<fC03 i1="06" i2="X" l="SPA">
<s0>Patología experimental</s0>
<s5>09</s5>
</fC03>
<fC03 i1="07" i2="X" l="FRE">
<s0>Virulence</s0>
<s5>10</s5>
</fC03>
<fC03 i1="07" i2="X" l="ENG">
<s0>Virulence</s0>
<s5>10</s5>
</fC03>
<fC03 i1="07" i2="X" l="SPA">
<s0>Virulencia</s0>
<s5>10</s5>
</fC03>
<fC03 i1="08" i2="X" l="FRE">
<s0>Infection</s0>
<s5>11</s5>
</fC03>
<fC03 i1="08" i2="X" l="ENG">
<s0>Infection</s0>
<s5>11</s5>
</fC03>
<fC03 i1="08" i2="X" l="SPA">
<s0>Infección</s0>
<s5>11</s5>
</fC03>
<fC03 i1="09" i2="X" l="FRE">
<s0>Adaptation</s0>
<s5>12</s5>
</fC03>
<fC03 i1="09" i2="X" l="ENG">
<s0>Adaptation</s0>
<s5>12</s5>
</fC03>
<fC03 i1="09" i2="X" l="SPA">
<s0>Adaptación</s0>
<s5>12</s5>
</fC03>
<fC03 i1="10" i2="X" l="FRE">
<s0>Virus grippal A(H1N1)</s0>
<s4>CD</s4>
<s5>97</s5>
</fC03>
<fC03 i1="10" i2="X" l="ENG">
<s0>Influenzavirus A(H1N1)</s0>
<s4>CD</s4>
<s5>97</s5>
</fC03>
<fC07 i1="01" i2="X" l="FRE">
<s0>Rodentia</s0>
<s2>NS</s2>
</fC07>
<fC07 i1="01" i2="X" l="ENG">
<s0>Rodentia</s0>
<s2>NS</s2>
</fC07>
<fC07 i1="01" i2="X" l="SPA">
<s0>Rodentia</s0>
<s2>NS</s2>
</fC07>
<fC07 i1="02" i2="X" l="FRE">
<s0>Mammalia</s0>
<s2>NS</s2>
</fC07>
<fC07 i1="02" i2="X" l="ENG">
<s0>Mammalia</s0>
<s2>NS</s2>
</fC07>
<fC07 i1="02" i2="X" l="SPA">
<s0>Mammalia</s0>
<s2>NS</s2>
</fC07>
<fC07 i1="03" i2="X" l="FRE">
<s0>Vertebrata</s0>
<s2>NS</s2>
</fC07>
<fC07 i1="03" i2="X" l="ENG">
<s0>Vertebrata</s0>
<s2>NS</s2>
</fC07>
<fC07 i1="03" i2="X" l="SPA">
<s0>Vertebrata</s0>
<s2>NS</s2>
</fC07>
<fN21>
<s1>308</s1>
</fN21>
</pA>
</standard>
</inist>
</record>

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