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Erschienen in: Immunologic Research 1-3/2013

01.12.2013 | Immunology & Microbiology in Miami

Age effects on mouse and human B cells

verfasst von: Bonnie B. Blomberg, Daniela Frasca

Erschienen in: Immunologic Research | Ausgabe 1-3/2013

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Abstract

Our laboratory has contributed to the areas of B cell receptor (BCR) and pre-BCR gene identification and transcription and has focused on the problem of the aged immune system in mice and humans for the last 15 years. We have found biomarkers for the decrease in B cell function in aged mice and humans. These include decreases in immunoglobulin (Ig) class switch (e.g., IgM to IgG), decreases in the enzyme AID (activation-induced cytidine deaminase) and decreases in the transcription factor E47. The E47 mRNA stability is decreased in old B cells due to decreased phospho-MAPKinase and phospho-TTP (tristetraprolin). Inflammation, e.g., TNF-α, which increases with age, impacts B cells directly by increasing their TNF-α and NF-κB and leads to the above decreased pathway. Both class switch and affinity maturation are decreased in elderly responses to the influenza vaccine and biomarkers we have found (numbers and percentages of switched memory B cells and AID in stimulated B cells in culture) can predict a beneficial or decreased immune response to the vaccine. Current and future avenues to improve the humoral immune response in the elderly are discussed.
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Metadaten
Titel
Age effects on mouse and human B cells
verfasst von
Bonnie B. Blomberg
Daniela Frasca
Publikationsdatum
01.12.2013
Verlag
Springer US
Erschienen in
Immunologic Research / Ausgabe 1-3/2013
Print ISSN: 0257-277X
Elektronische ISSN: 1559-0755
DOI
https://doi.org/10.1007/s12026-013-8440-9

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