Cited by 299T-cell and B-cell ImmunologyCancer Immunotherapy and BiomarkersImmunotherapy and Immune Responses

Tumor-infiltrating T lymphocytes: Friends or foes?

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Yu, Ping, Fu, Yang-Xin·2006·Laboratory Investigation

Abstract

The prognostic significance of tumor-infiltrating lymphocytes (TILs) has been a longstanding topic of debate. In cases where TILs have improved patient outcome, T lymphocytes are recognized as the main effectors of antitumor immune responses. However, recent studies have revealed that a subset of CD4(+) T cells, referred to as CD4(+)CD25(+) regulatory T cells (Treg), may accumulate in the tumor environment and suppress tumor-specific T-cell responses, thereby hindering tumor rejection. Hence, predicting tumor behavior on the basis of an indiscriminate evaluation of tumor-infiltrating T cells may result in inconsistent prognostic accuracy. The presence of infiltrating CD4(+)CD25(+) Treg may be detrimental to the host defense against the tumor, while the presence of effector T lymphocytes, including CD8(+) T cells and non-regulatory CD4(+) helper T cells may be beneficial. Enhanced recruitment of antitumor effector T lymphocytes to tumor tissue in addition to inhibition of local Treg, may therefore be an ideal target for improving cancer immunotherapy. This article reviews the antitumor functions of T-lymphocytes, with special attention given to CD4(+) regulatory T-cells within the tumor environment.

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Crossref · 10.1038/labinvest.3700389

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  • CD8+ T cells and CD4+ effector T cells have demonstrated anti-cancer potential, while regulatory T cells (CD4+ CD25+ Tregs) contribute to the attenuated immune response exhibited in cancer.

    “CD8+ T cells and CD4+ effector T cells have demonstrated anti-cancer potential, while regulatory T cells (CD4+ CD25+ Tregs) have been shown to be able to contribute to the attenuated immune response exhibited in cancer [65,66].”

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  1. Clemente CG, Mihm Jr MC, Bufalino R, et al. Prognostic value of tumor infiltrating lymphocytes in the vertical growth phase of primary cutaneous melanoma. Cancer 1996;77:1303-1310.
  2. Golgher D, Jones E, Powrie F, et al. Depletion of CD25+ regulatory cells uncovers immune responses to shared murine tumor rejection antigens. Eur J Immunol 2002;32:3267-3275.
  3. Marrogi AJ, Munshi A, Merogi AJ, et al. Study of tumor infiltrating lymphocytes and transforming growth factor-beta as prognostic factors in breast carcinoma. Int J Cancer 1997;74:492-501.
  4. Klugewitz K, Scheffold A, Radbruch A, et al. Transfer of IFNgamma-depleted CD4(+) T cells together with CD8(+) T cells leads to rejection of murine kidney sarcoma in mice. Int J Cancer 2000;87:673-679. 145
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Authors
Yu, P., & Fu, Y.-X.
Affiliations
University of Chicago (US)
Corresponding author
  • Yu, Ping
  • Fu, Yang-Xin
Venue
Laboratory Investigation
Publisher
Elsevier BV
Published
2006-03
Volume
86
Issue
3
Pages
231-245
ISSN
0023-6837 (ISSN-L)
OpenAlex
W2061590134
Cited by
299
References
211
Citations by year
2026: 3 · 2025: 9 · 2024: 14 · 2023: 13 · 2022: 15 · 2021: 20 · 2020: 13 · 2019: 15 · 2018: 8 · 2017: 18 · 2016: 12 · 2015: 14 · 2014: 16 · 2013: 11 · 2012: 17
FWCI
1.35
Type
journal article
Language
en
Open access
Locations
  • Laboratory Investigation (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Immunology and Microbiology › Immunology › T-cell and B-cell Immunology
  • Health Sciences › Medicine › Oncology › Cancer Immunotherapy and Biomarkers
  • Life Sciences › Immunology and Microbiology › Immunology › Immunotherapy and Immune Responses
Keywords
tumor-infiltrating lymphocytes, regulatory T cells, CD4+CD25+ T cells, CD8+ T cells, CD4+ T helper cells, antitumor immunity, tumor immunosuppression, prognostic value, cancer immunotherapy
MeSH terms
Humans, Neoplasms, Prognosis, CD4-Positive T-Lymphocytes, T-Lymphocyte Subsets, Lymphocytes, Tumor-Infiltrating, T-Lymphocytes, Regulatory

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