Cited by 748Immune cells in cancerCancer Immunotherapy and BiomarkersImmunotherapy and Immune Responses

B7-H4 expression identifies a novel suppressive macrophage population in human ovarian carcinoma

Open access
Kryczek, Ilona, Zou, Linhua, Rodriguez, Paulo, Zhu, Gefeng, Wei, Shuang, Mottram, Peter, Brumlik, Michael, Cheng, Pui +7 more·2006·The Journal of Experimental Medicine

Abstract

Tumor-associated macrophages are a prominent component of ovarian cancer stroma and contribute to tumor progression. B7-H4 is a recently identified B7 family molecule. We show that primary ovarian tumor cells express intracellular B7-H4, whereas a fraction of tumor macrophages expresses surface B7-H4. B7-H4+ tumor macrophages, but not primary ovarian tumor cells, suppress tumor-associated antigen-specific T cell immunity. Blocking B7-H4-, but not arginase-, inducible nitric oxide synthase or B7-H1 restored the T cell stimulating capacity of the macrophages and contributes to tumor regression in vivo. Interleukin (IL)-6 and IL-10 are found in high concentrations in the tumor microenvironment. These cytokines stimulate macrophage B7-H4 expression. In contrast, granulocyte/macrophage colony-stimulating factor and IL-4, which are limited in the tumor microenvironment, inhibit B7-H4 expression. Ectopic expression of B7-H4 makes normal macrophages suppressive. Thus, B7-H4+ tumor macrophages constitute a novel suppressor cell population in ovarian cancer. B7-H4 expression represents a critical checkpoint in determining host responses to dysfunctional cytokines in ovarian cancer. Blocking B7-H4 or depleting B7-H4+ tumor macrophages may represent novel strategies to enhance T cell tumor immunity in cancer.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1084/jem.20050930

Cites

57 of 57 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • In animal models, introducing B7-1 into tumors or blocking inhibitory B7 family members reduces tumor growth or causes spontaneous tumor rejection.

    “Animal model studies have shown that introduction of B7-1 into tumors by transfection or blockade of inhibitory B7 family members can reduce tumor growth or result in spontaneous tumor rejection in vivo [7–13].”
  • In the tumor microenvironment, stimulatory and inhibitory B7 family members are imbalanced, with high inhibitory and low stimulatory expression.

    “There is an active imbalance between stimulatory and inhibitory B7 family members in the tumor microenvironment [1,3,7,8].”

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Kryczek, I., Zou, L., Rodriguez, P., Zhu, G., Wei, S., Mottram, P., Brumlik, M., Cheng, P., Curiel, T., Myers, L., Lackner, A., Alvarez, X., Ochoa, A., Chen, L., & Zou, W.
Affiliations
  • Tulane University (US)
  • 3Louisianna State University Health Sciences Center, New Orleans, LA 70112
  • Johns Hopkins University (US)
  • Louisiana State University Health Sciences Center New Orleans (US)
Venue
The Journal of Experimental Medicine
Published
2006-04-10
Volume
203
Issue
4
Pages
871-881
ISSN
  • 0022-1007 (ISSN-L)
  • 1540-9538
OpenAlex
W2110836981
Cited by
748
References
57
Citations by year
2026: 15 · 2025: 22 · 2024: 30 · 2023: 30 · 2022: 54 · 2021: 29 · 2020: 34 · 2019: 35 · 2018: 30 · 2017: 39 · 2016: 43 · 2015: 43 · 2014: 37 · 2013: 46 · 2012: 41
FWCI
16.44
Type
journal article
Language
en
Open access
Licence
cc-by-nc-sa
Locations
  • The Journal of Experimental Medicine (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by-nc-sa)
  • PubMed Central (publishedVersion, cc-by-nc-sa)
  • PubMed (publishedVersion)
Funders
National Cancer Institute (R01CA092562, CA099985, CA 97085, CA 092562, R01CA097085, R21CA100227, R01CA099985, CA 100227)
Topics
  • Life Sciences › Immunology and Microbiology › Immunology › Immune cells in cancer
  • Health Sciences › Medicine › Oncology › Cancer Immunotherapy and Biomarkers
  • Life Sciences › Immunology and Microbiology › Immunology › Immunotherapy and Immune Responses
Keywords
B7-H4, tumor-associated macrophages, ovarian carcinoma, T cell suppression, tumor microenvironment, interleukin-6, IL-10, GM-CSF, IL-4, PD-L1, arginase, inducible nitric oxide synthase, tumor immunosuppression, tumor regression
MeSH terms
Animals, Antigens, Neoplasm, Carcinoma, Female, Humans, Macrophages, Ovarian Neoplasms, T-Lymphocytes, Tumor Cells, Cultured, Biomarkers, Antigens, CD, Interleukin-6, Immunophenotyping, Mice, SCID, Mice, Inbred NOD, Interleukin-10, B7-1 Antigen, Mice, B7-H1 Antigen, V-Set Domain-Containing T-Cell Activation Inhibitor 1

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review