Cited by 284T-cell and B-cell ImmunologyPsoriasis: Treatment and PathogenesisHematopoietic Stem Cell Transplantation

Persistence of naive CD45RA+ regulatory T cells in adult life

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Seddiki, Nabila, Santner-Nanan, Brigitte, Tangye, Stuart G., Alexander, Stephen I., Solomon, Michael, Lee, Soon, Nanan, Ralph, de Saint Groth, Barbara Fazekas·2006·Blood

Abstract

Regulatory T cells (TREGs) constitutively expressing CD4, CD25, and the transcription factor Foxp3 can prevent a wide range of experimental and spontaneous autoimmune diseases in mice. In humans, CD4+CD25bright T cells, predominantly within the CD45RO+ activated/memory subset in adults and the CD45RA+ naive T-cell subset in infants, are considered to be the equivalent subset. Using novel combinations of monoclonal antibodies (mAbs), we examined expression of CD25 in human infant thymus, cord blood, adult peripheral blood, lymph node, and spleen. In addition to the CD4+CD25bright T cells, subfractionation on the basis of CD45 splice variants indicated that all samples contained a second distinct population of cells expressing a slightly lower level of CD25. In adult peripheral blood, this population expressed a naive CD45RA+ phenotype. The corresponding population in lymph node, spleen, and cord blood showed some evidence of activation, and expressed markers characteristic of TREGs, such as cytotoxic T lymphocyte-associated antigen 4 (CTLA-4). Sorted CD4+CD25+CD45RA+ T cells from both cord and adult blood expressed very high levels of mRNA for Foxp3 and manifested equivalent suppressive activity in vitro, indicating that they are bone fide members of the regulatory T-cell lineage. Targeting naive TREGs in adults may offer new means of preventing and treating autoimmune disease.

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  • In human blood, naive-like Treg cells decrease and memory-like Treg cells increase with age.

    “with naive-like Treg cells decreasing and memory-like Treg cells increasing with age”

    From Successful and Maladaptive T Cell Aging (2017) · cites this paper as Seddiki et al., 2006

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Research works printed but not linked: 6

  1. Sakaguchi S. Naturally arising CD4 ϩ regulatory T cells for immunologic self-tolerance and negative control of immune responses. Annu Rev Immu- nol. 2004;22:531-562.
  2. Baecher-Allan C, Brown JA, Freeman GJ, Hafler DA. CD4 ϩ CD25 high regulatory cells in human pe- ripheral blood. J Immunol. 2001;167:1245-1253.
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Authors
Seddiki, N., Santner-Nanan, B., Tangye, S. G., Alexander, S. I., Solomon, M., Lee, S., Nanan, R., & de Saint Groth, B. F.
Affiliations
  • The University of Sydney (AU)
  • From the Centenary Institute of Cancer Medicine and Cell Biology, Faculty of Medicine, University of Sydney, NSW, Australia; Department of Pediatrics, University of Sydney, Western Clinical School, Penrith, NSW, Australia; The Childrens Hospital at Westmead, NSW, Australia; and the Departments of Gastroenterology and Pathology, Royal Prince Alfred Hospital, Camperdown, NSW, Australia.
Venue
Blood
Published
2006-04-01
Volume
107
Issue
7
Pages
2830-2838
ISSN
  • 0006-4971 (ISSN-L)
  • 1528-0020
OpenAlex
W2067263905
Cited by
284
References
50
Citations by year
2026: 8 · 2025: 10 · 2024: 4 · 2023: 6 · 2022: 9 · 2021: 6 · 2020: 12 · 2019: 10 · 2018: 7 · 2017: 13 · 2016: 11 · 2015: 12 · 2014: 12 · 2013: 21 · 2012: 13
FWCI
6.27
Type
journal article
Language
en
Open access
Locations
  • Blood (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Crohn's and Colitis Foundation of America
  • Cancer Australia
  • National Health and Medical Research Council
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
regulatory T cells, CD25 expression, Foxp3, CD45RO+ memory T cells, CTLA-4, Treg suppressive function, umbilical cord blood, thymus, peripheral blood, lymph nodes, spleen, autoimmune disease prevention
MeSH terms
Aging, Animals, Humans, Lymphocyte Activation, Mice, Inbred C57BL, T-Lymphocytes, CD4-Positive T-Lymphocytes, Leukocyte Common Antigens, Mice, Knockout, Homeodomain Proteins, Mice

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