Cited by 449T-cell and B-cell ImmunologyImmunotherapy and Immune ResponsesImmune responses and vaccinations

Endogenous naive CD8+ T cell precursor frequency regulates primary and memory responses to infection

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Obar, Joshua J., Khanna, Kamal M., Lefrançois, Leo·2008·Immunity

Abstract

Through genetic recombination, the adaptive immune system generates a diverse T cell repertoire allowing recognition of a vast spectrum of foreign antigens. Any given CD8+ T cell specificity is thought to be rare, but none have been directly quantified. Here, major histocompatibility complex tetramer and magnetic-bead technology were coupled to quantitate naive antigen-specific CD8+ T cells and the early response to infection. Among six specificities measured, the number of naive antigen-specific precursors ranged from approximately 80 to 1200 cells/mouse. After vesicular stomatitis virus infection, the antigen-specific CD8+ T cell response occurred in discrete phases: prolonged activation of a subset of cells over the first 72 hr followed by a rapid proliferative burst. Naive precursor frequency altered response kinetics and regulated immunodominance, as well as the time required for the responding population to shift toward CD62L(hi) memory cells. Thus, initial endogenous precursor frequencies were surprisingly diverse and not only regulated initial immune response characteristics but also controlled memory CD8+ T cell lineage decisions.

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Crossref · 10.1016/j.immuni.2008.04.010

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  • Increased clonal sizes are a hallmark of immune memory, and clonal dominance is normal for memory T cell responses to a single peptide, likely due to antigen-driven selection.

    “Increase in clonal sizes is a hallmark of immune memory; moreover, clonal dominance is quite normal for the memory T cell repertoire responding to a single peptide”

    From Successful and Maladaptive T Cell Aging (2017) · cites this paper as Obar et al., 2008

  • In mice, the TCR repertoire to an antigenic peptide follows a power law distribution with many specificities and only a few gaining dominance.

    “In mice, the TCR repertoire to an antigenic peptide follows a power law distribution involving a large number of T cell specificities, with only a few of them gaining dominance”

    From Successful and Maladaptive T Cell Aging (2017) · cites this paper as Obar et al., 2008

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Authors
Obar, J. J., Khanna, K. M., & Lefrançois, L.
Affiliations
UConn Health (US)
Corresponding author
Lefrançois, Leo
Venue
Immunity
Publisher
Elsevier BV
Published
2008-06
Volume
28
Issue
6
Pages
859-869
ISSN
1074-7613 (ISSN-L)
OpenAlex
W2027434623
Cited by
449
References
62
Citations by year
2026: 8 · 2025: 11 · 2024: 7 · 2023: 19 · 2022: 14 · 2021: 18 · 2020: 20 · 2019: 13 · 2018: 21 · 2017: 14 · 2016: 17 · 2015: 29 · 2014: 36 · 2013: 57 · 2012: 51
FWCI
15.50
Type
journal article
Language
en
Open access
Locations
  • Immunity (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institutes of Health (AI41576, F32AI074277)
  • Damon Runyon Cancer Research Foundation (DRG-1886-05)
Topics
  • Life Sciences › Immunology and Microbiology › Immunology › T-cell and B-cell Immunology
  • Life Sciences › Immunology and Microbiology › Immunology › Immunotherapy and Immune Responses
  • Life Sciences › Immunology and Microbiology › Immunology › Immune responses and vaccinations
Keywords
naive CD8+ T cells, T cell precursor frequency, antigen-specific T cells, primary immune response, memory T cells, immunodominance, L-selectin, T cell proliferation, MHC tetramers, magnetic bead separation
MeSH terms
Animals, Immunologic Memory, Lymphocyte Activation, Mice, Inbred C57BL, Mice, Transgenic, RNA, Messenger, Vesicular stomatitis Indiana virus, Histocompatibility Antigens Class I, Rhabdoviridae Infections, CD8-Positive T-Lymphocytes, Lymphocyte Count, L-Selectin, Cell Proliferation, Mice, Precursor Cells, T-Lymphoid

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