Age effects on mouse and human B cells

Research output: Contribution to journalArticle

19 Scopus citations

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.

Original languageEnglish (US)
Pages (from-to)354-360
Number of pages7
JournalImmunologic Research
Volume57
Issue number1-3
DOIs
StatePublished - Dec 2013

Keywords

  • Aging
  • Antibody production
  • B cells
  • Transcription factors
  • Vaccines

ASJC Scopus subject areas

  • Immunology

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