Cited by 91T-cell and B-cell ImmunologyImmunotherapy and Immune ResponsesCancer Immunotherapy and Biomarkers

Homeostatic proliferation as an isolated variable reverses CD8+ T cell anergy and promotes tumor rejection

Brown, Ian E, Blank, Christian, Kline, Justin, Kacha, Aalok K, Gajewski, Thomas F·2006·The Journal of Immunology

Abstract

Although recent work has suggested that lymphopenia-induced homeostatic proliferation may improve T cell-mediated tumor rejection, there is little direct evidence isolating homeostatic proliferation as an experimental variable, and the mechanism by which improved antitumor immunity occurs via homeostatic proliferation is poorly understood. An adoptive transfer model was developed in which tumor-specific 2C/RAG2−/− TCR transgenic CD8+ T cells were introduced either into the lymphopenic environment of RAG2−/− mice or into P14/RAG2−/− mice containing an irrelevant CD8+ TCR transgenic population. RAG2−/−, but not P14/RAG2−/− recipients supported homeostatic proliferation of transferred T cells as well as tumor rejection. Despite absence of tumor rejection in P14/RAG2−/− recipients, 2C cells did become activated, as reflected by CFSE dilution and CD44 up-regulation. However, these cells showed poor IFN-γ and IL-2 production upon restimulation, consistent with T cell anergy and similar to the hyporesponsiveness induced by administration of soluble peptide Ag. To determine whether homeostatic proliferation could uncouple T cell anergy, anergic 2C cells were transferred into RAG−/− recipients, which resulted in vigorous homeostatic proliferation, recovery of IL-2 production, and acquisition of the ability to reject tumors. Taken together, our data suggest that a major mechanism by which homeostatic proliferation supports tumor rejection is by maintaining and/or re-establishing T cell responsiveness.

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Crossref · 10.4049/jimmunol.177.7.4521

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Authors
Brown, I. E., Blank, C., Kline, J., Kacha, A. K., & Gajewski, T. F.
Affiliations
University of Chicago (US)
Venue
The Journal of Immunology
Published
2006-10-01
Volume
177
Issue
7
Pages
4521-4529
ISSN
  • 0022-1767 (ISSN-L)
  • 1550-6606
OpenAlex
W1915573821
Cited by
91
References
62
Citations by year
2025: 2 · 2024: 2 · 2023: 1 · 2022: 1 · 2020: 2 · 2019: 1 · 2018: 2 · 2017: 6 · 2016: 6 · 2015: 3 · 2014: 4 · 2013: 12 · 2012: 11
FWCI
2.77
Type
journal article
Language
en
Open access
closed
Locations
  • The Journal of Immunology (publishedVersion)
  • PubMed (publishedVersion)
Funders
National Cancer Institute (P01CA97296, P01CA097296)
Topics
  • Life Sciences › Immunology and Microbiology › Immunology › T-cell and B-cell Immunology
  • Life Sciences › Immunology and Microbiology › Immunology › Immunotherapy and Immune Responses
  • Health Sciences › Medicine › Oncology › Cancer Immunotherapy and Biomarkers
Keywords
homeostatic proliferation, CD8+ T cells, T cell anergy, tumor rejection, lymphopenia, adoptive T cell therapy, TCR transgenic T cells, Rag2 knockout mice, T cell hyporesponsiveness, IL-2 production, interferon-gamma, antitumor immunity
MeSH terms
Animals, Enzyme-Linked Immunosorbent Assay, Flow Cytometry, Homeostasis, Lymphopenia, Mice, Transgenic, Neoplasms, Experimental, Receptors, Antigen, T-Cell, Cytokines, Genes, RAG-1, Clonal Anergy, CD8-Positive T-Lymphocytes, Adoptive Transfer, Cell Proliferation, Mice

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