Cited by 439T-cell and B-cell ImmunologyPsoriasis: Treatment and PathogenesisHematopoietic Stem Cell Transplantation

Two subsets of naive T helper cells with distinct T cell receptor excision circle content in human adult peripheral blood

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Kimmig, Sonja, Przybylski, Grzegorz K., Schmidt, Christian A., Laurisch, Katja, Möwes, Beate, Radbruch, Andreas, Thiel, Andreas·2002·The Journal of Experimental Medicine

Abstract

During ageing thymic function declines and is unable to meet the demand for peripheral T helper (Th) cell replenishment. Therefore, population maintenance of naive Th cells must be at least partly peripherally based. Such peripheral postthymic expansion of recent thymic emigrants (RTEs) during ageing consequently should lead to loss or dilution of T cell receptor excision circles (TRECs) from a subset of naive T cells. We have identified two subsets of naive Th cells in human adult peripheral blood characterized by a striking unequal content of TRECs, indicating different peripheral proliferative histories. TRECs are highly enriched in peripheral naive CD45RA+ Th cells coexpressing CD31 compared with peripheral naive CD45RA+ Th cells lacking CD31 expression, in which TRECs can hardly be detected. Furthermore we show that CD31−CD45RA+ Th cells account for increasing percentages of the naive peripheral Th cell pool during ageing but retain phenotypic and functional features of naive Th cells. As CD31 is lost upon T cell receptor (TCR) engagement in vitro, we hypothesize that TCR triggering is a prerequisite for homeostatically driven peripheral postthymic expansion of human naive RTEs. We describe here the identification of peripherally expanded naive Th cells in human adult blood characterized by the loss of CD31 expression and a highly reduced TREC content.

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  • Protein tyrosine kinase 7 and CD31 are expressed on a subpopulation of naive cells in children and young adults, are lost with homeostatic proliferation, and decline with age.

    “The cell surface molecules protein tyrosine kinase 7 and CD31, expressed on a subpopulation of naive cells in children and young adults, are lost with homeostatic proliferation and decline with age”

    From Successful and Maladaptive T Cell Aging (2017) · cites this paper as Kimmig et al., 2002

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Authors
Kimmig, S., Przybylski, G. K., Schmidt, C. A., Laurisch, K., Möwes, B., Radbruch, A., & Thiel, A.
Affiliations
  • German Rheumatism Research Centre (DE)
  • Humboldt-Universität zu Berlin (DE)
  • 1Department of Clinical Immunology, Deutsches Rheuma-Forschungszentrum Berlin, 10117 Berlin, Germany
Corresponding author
Thiel, Andreas
Venue
The Journal of Experimental Medicine
Published
2002-03-18
Volume
195
Issue
6
Pages
789-794
ISSN
  • 0022-1007 (ISSN-L)
  • 1540-9538
OpenAlex
W2059239713
Cited by
439
References
30
Citations by year
2026: 3 · 2025: 7 · 2024: 9 · 2023: 6 · 2022: 4 · 2021: 13 · 2020: 17 · 2019: 27 · 2018: 22 · 2017: 21 · 2016: 21 · 2015: 17 · 2014: 24 · 2013: 34 · 2012: 33
FWCI
4.50
Type
journal article
Language
en
Open access
Locations
  • The Journal of Experimental Medicine (publishedVersion)
  • PubMed Central (publishedVersion, cc-by-nc-sa)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Immunology and Microbiology › Immunology › T-cell and B-cell Immunology
  • Life Sciences › Immunology and Microbiology › Immunology › Psoriasis: Treatment and Pathogenesis
  • Health Sciences › Medicine › Hematology › Hematopoietic Stem Cell Transplantation
Keywords
TREC, CD31, CD45RA, recent thymic emigrants, T cell receptor engagement, T cell proliferation, peripheral blood T cells
MeSH terms
Adult, Aging, Flow Cytometry, Humans, Receptors, Antigen, T-Cell, Thymus Gland, T-Lymphocyte Subsets, Leukocyte Common Antigens, Antigens, CD34

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