ArticleClinical and vaccine immunology : CVI2007
Ex vivo monitoring of antigen-specific CD4+ T cells after recall immunization with tetanus toxoid.
Article in Clinical and vaccine immunology : CVI, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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Who cites it
8 citing papers in PubMed, 19 citations in OpenAlex.
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- T cell assays for non-clinical immunogenicity risk assessment: best practices recommended by the European Immunogenicity Platform.Frontiers in immunology · 2025Review
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- Does human homology reduce the potential immunogenicity of non-antibody scaffolds?Frontiers in immunology · 2023Review
- A guide to measuring phagosomal dynamics.The FEBS journal · 2021Review
Corrections and comments
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Authors and funding
4 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
To monitor antigen-specific CD4+ T cells during a recall immune response to tetanus toxoid (TT), a sequential analysis including ex vivo phenotyping and cytokine flow cytometry, followed by cloning and T-cell-receptor (TCR) spectratyping of cytokine-positive CD4+ T cells, was performed. Grossly, twice as many TT-specific CD4+ T-cell clones, ex vivo derived from the CCR7+/- CD69+ interleukin-2-positive (IL-2+) CD4+ subsets, belonged to the central memory (T(CM); CD62L+ CD27+ CCR7+) compared to the effector memory population (T(EM); CD62L- CD27- CCR7-). After the boost, a predominant expansion of the T(CM) population was observed with more limited variations of the T(EM) population. TCR beta-chain-variable region (BV) spectratyping and sequencing confirmed a large concordance between most frequently expressed BV TCR-CDR3 from ex vivo-sorted CCR7+/- CD69+ IL-2+ CD4+ subsets and BV usage of in vitro-derived TT-specific CD4+ T-cell clones, further demonstrating the highly polyclonal but stable character of the specific recall response to TT. Taken together, ex vivo flow cytometry analysis focused on the CCR7+/- CD69+ IL-2+ CD4+ subsets appears to target the bulk of antigen-specific T cells and to reach an analytical power sufficient to adequately delineate in field trials the profile of the antigen-specific response to vaccine.
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