Serum Antibody Response to Matrix Protein 2 Following Natural Infection With 2009 Pandemic Influenza A(H1N1) Virus in Humans

Natural infection-induced humoral immunity to matrix protein 2 (M2) of influenza A viruses in humans is not fully understood. Evidence suggests that anti-M2 antibody responses following influenza A virus infection are weak and/or transient. We show that the seroprevalence of anti-M2 antibodies incre...

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Bibliographic Details
Published in:The Journal of infectious diseases 2014-04, Vol.209 (7), p.986-994
Main Authors: Zhong, Weimin, Reed, Carrie, Blair, Patrick J., Katz, Jacqueline M., Hancock, Kathy
Format: Article
Language:English
Subjects:
Adolescent
Adult
Age groups
Aged
Aged, 80 and over
Antibodies
Antibodies, Viral - blood
Antibody response
Biological and medical sciences
Child
Child, Preschool
Cross Reactions
Female
Fundamental and applied biological sciences. Psychology
Humans
Immunity
Infant
Infections
Infectious diseases
Influenza A virus
Influenza A Virus, H1N1 Subtype - immunology
Influenza vaccines
Influenza, Human - immunology
Influenza, Human - virology
Male
Medical sciences
Microbiology
Middle Aged
Orthomyxoviridae
Pandemics
United States
Viral Matrix Proteins - immunology
Viruses
Young Adult
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Summary:Natural infection-induced humoral immunity to matrix protein 2 (M2) of influenza A viruses in humans is not fully understood. Evidence suggests that anti-M2 antibody responses following influenza A virus infection are weak and/or transient. We show that the seroprevalence of anti-M2 antibodies increased with age in 317 serum samples from healthy individuals in the United States in 2007-2008. Infection with 2009 pandemic H1N1 influenza A virus (A[H1N1]pdm09) elicited a recall serum antibody response to M2 protein of A(H1N1)pdm09 in 47% of the affected 118 individuals tested. Anti-M2 antibody responses were more robust among individuals with preexisting antibodies to M2 protein. Moreover, the antibodies induced as a result of infection with A(H1N1)pdm09 were cross-reactive with M2 protein of seasonal influenza A viruses. These results emphasize the need to further investigate the possible roles of anti-M2 antibodies in human influenza A virus infection.
ISSN:0022-1899
1537-6613
DOI:10.1093/infdis/jit811