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Dendritic Cell Activation by Recombinant Hemagglutinin Proteins of H1N1 and H5N1 Influenza A Viruses

Identifieur interne : 000E29 ( PascalFrancis/Curation ); précédent : 000E28; suivant : 000E30

Dendritic Cell Activation by Recombinant Hemagglutinin Proteins of H1N1 and H5N1 Influenza A Viruses

Auteurs : Wen-Chun Liu [Taïwan] ; Shih-Chang Lin [Taïwan] ; Yen-Ling Yu [Taïwan] ; Ching-Liang Chu [Taïwan] ; Suh-Chin Wu [Taïwan]

Source :

RBID : Pascal:10-0511496

Descripteurs français

English descriptors

Abstract

Since dendritic cells may play a key role in defense against influenza virus infection, we examined the effects of recombinant hemagglutinin (HA) proteins derived from mouse-adapted H1N1 (A/WSN/1933), swine-origin 2009 pandemic H1N1 (A/Texas/05/2009), and highly pathogenic avian influenza H5N1 (A/Thailand/KAN-1/ 2004) viruses on mouse myeloid dendritic cells (mDCs). The results reveal that tumor necrosis factor alpha (TNF-α), interleukin-12 (IL-12) p70, and major histocompatibility complex class II (MHC-II) expression was increased in mDCs after treatment with recombinant HA proteins of H1N1 and H5N1. The specificity of recombinant HA treatments for mDC activation was diminished after proteinase K digestion. HA apparently promotes mDC maturation by enhancing CD40 and CD86 expression and suppressing endocytosis. No significant differences in mDC activation were observed among recombinant proteins of H1N1 and H5N1. The stimulation of mDCs by HA proteins of H1N1 and H5N1 was completely MyD88 dependent. These findings may provide useful information for the development of more-effective influenza vaccines.
pA  
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A03   1    @0 J. virol.
A05       @2 84
A06       @2 22
A08 01  1  ENG  @1 Dendritic Cell Activation by Recombinant Hemagglutinin Proteins of H1N1 and H5N1 Influenza A Viruses
A11 01  1    @1 LIU (Wen-Chun)
A11 02  1    @1 LIN (Shih-Chang)
A11 03  1    @1 YU (Yen-Ling)
A11 04  1    @1 CHU (Ching-Liang)
A11 05  1    @1 WU (Suh-Chin)
A14 01      @1 Institute of Biotechnology, National Tsing Hua University @2 Hsinchu 30013 @3 TWN @Z 1 aut. @Z 2 aut. @Z 5 aut.
A14 02      @1 Vaccine Research and Development Center, National Health Research Institutes @2 Zhunan, Miaoli County 350 @3 TWN @Z 3 aut. @Z 4 aut. @Z 5 aut.
A20       @1 12011-12017
A21       @1 2010
A23 01      @0 ENG
A43 01      @1 INIST @2 13592 @5 354000191376530400
A44       @0 0000 @1 © 2010 INIST-CNRS. All rights reserved.
A45       @0 44 ref.
A47 01  1    @0 10-0511496
A60       @1 P
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A64 01  1    @0 Journal of virology
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C01 01    ENG  @0 Since dendritic cells may play a key role in defense against influenza virus infection, we examined the effects of recombinant hemagglutinin (HA) proteins derived from mouse-adapted H1N1 (A/WSN/1933), swine-origin 2009 pandemic H1N1 (A/Texas/05/2009), and highly pathogenic avian influenza H5N1 (A/Thailand/KAN-1/ 2004) viruses on mouse myeloid dendritic cells (mDCs). The results reveal that tumor necrosis factor alpha (TNF-α), interleukin-12 (IL-12) p70, and major histocompatibility complex class II (MHC-II) expression was increased in mDCs after treatment with recombinant HA proteins of H1N1 and H5N1. The specificity of recombinant HA treatments for mDC activation was diminished after proteinase K digestion. HA apparently promotes mDC maturation by enhancing CD40 and CD86 expression and suppressing endocytosis. No significant differences in mDC activation were observed among recombinant proteins of H1N1 and H5N1. The stimulation of mDCs by HA proteins of H1N1 and H5N1 was completely MyD88 dependent. These findings may provide useful information for the development of more-effective influenza vaccines.
C02 01  X    @0 002A05C10
C03 01  X  FRE  @0 Virus grippal A @2 NW @5 01
C03 01  X  ENG  @0 Influenza A virus @2 NW @5 01
C03 01  X  SPA  @0 Influenza A virus @2 NW @5 01
C03 02  X  FRE  @0 Cellule dendritique @5 05
C03 02  X  ENG  @0 Dendritic cell @5 05
C03 02  X  SPA  @0 Célula dendrítica @5 05
C03 03  X  FRE  @0 Protéine recombinante @5 06
C03 03  X  ENG  @0 Recombinant protein @5 06
C03 03  X  SPA  @0 Proteína recombinante @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
C07 01  X  FRE  @0 Influenzavirus A @2 NW
C07 01  X  ENG  @0 Influenzavirus A @2 NW
C07 01  X  SPA  @0 Influenzavirus A @2 NW
C07 02  X  FRE  @0 Orthomyxoviridae @2 NW
C07 02  X  ENG  @0 Orthomyxoviridae @2 NW
C07 02  X  SPA  @0 Orthomyxoviridae @2 NW
C07 03  X  FRE  @0 Virus @2 NW
C07 03  X  ENG  @0 Virus @2 NW
C07 03  X  SPA  @0 Virus @2 NW
N21       @1 347
N44 01      @1 OTO
N82       @1 OTO

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