Cited by 425Phagocytosis and Immune RegulationCancer, Hypoxia, and MetabolismImmune cells in cancer

HIF-1 regulates CD47 expression in breast cancer cells to promote evasion of phagocytosis and maintenance of cancer stem cells

Open access
Zhang, Huimin, Lu, Haiquan, Xiang, Lisha, Bullen, John W., Zhang, Chuanzhao, Samanta, Debangshu, Gilkes, Daniele M., He, Jianjun +1 more·2015·Proceedings of the National Academy of Sciences

Abstract

Increased expression of CD47 has been reported to enable cancer cells to evade phagocytosis by macrophages and to promote the cancer stem cell phenotype, but the molecular mechanisms regulating CD47 expression have not been determined. Here we report that hypoxia-inducible factor 1 (HIF-1) directly activates transcription of the CD47 gene in hypoxic breast cancer cells. Knockdown of HIF activity or CD47 expression increased the phagocytosis of breast cancer cells by bone marrow-derived macrophages. CD47 expression was increased in mammosphere cultures, which are enriched for cancer stem cells, and CD47 deficiency led to cancer stem cell depletion. Analysis of datasets derived from thousands of patients with breast cancer revealed that CD47 expression was correlated with HIF target gene expression and with patient mortality. Thus, CD47 expression contributes to the lethal breast cancer phenotype that is mediated by HIF-1.

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 · 10.1073/pnas.1520032112

Cites

62 of 62 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?

  • Hypoxic tumor cells evade innate immune recognition through up-regulation of CD47, which interacts with SIRPα on macrophages to block phagocytosis.

    “hypoxic tumor cells evade innate immune recognition through the up-regulation of CD47, a cell surface molecule that interacts with signal regulatory protein alpha (SIRP α) on the surface of macrophages to block phagocytosis”

    From Hypoxic control of metastasis (2016) · cites this paper as [58]

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

7 retracted

Flagged first, then by citations

Research works printed but not linked: 1

  1. Vaupel P, Höckel M, Mayer A (2007) Detection and characterization of tumor hypoxia using pO2 histography. Antioxid Redox Signal 9(8):1221-1235.

Cited by

Sorted by citations

Authors
Zhang, H., Lu, H., Xiang, L., Bullen, J. W., Zhang, C., Samanta, D., Gilkes, D. M., He, J., & Semenza, G. L.
Affiliations
  • Johns Hopkins University (US)
  • First Affiliated Hospital of Xi'an Jiaotong University (CN)
Venue
Proceedings of the National Academy of Sciences
Published
2015-10-28
Volume
112
Issue
45
Pages
E6215-23
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W1853160207
Cited by
420
References
62
Citations by year
2026: 22 · 2025: 33 · 2024: 62 · 2023: 46 · 2022: 57 · 2021: 48 · 2020: 52 · 2019: 29 · 2018: 31 · 2017: 17 · 2016: 21 · 2015: 1
FWCI
11.48
Type
journal article
Language
en
Open access
Locations
  • Proceedings of the National Academy of Sciences (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • American Cancer Society (122437-RP-12-090-01-COUN)
  • U.S. Department of Defense (W81XWH-12-1-0464)
Topics
  • Life Sciences › Immunology and Microbiology › Immunology › Phagocytosis and Immune Regulation
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › Cancer, Hypoxia, and Metabolism
  • Life Sciences › Immunology and Microbiology › Immunology › Immune cells in cancer
Keywords
HIF-1, CD47, breast cancer, phagocytosis evasion, macrophages, cancer stem cells, hypoxia, transcriptional regulation, mammospheres, patient mortality, prognostic factors
MeSH terms
Analysis of Variance, Breast Neoplasms, Female, Humans, Luciferases, Phagocytosis, Neoplastic Stem Cells, Immunoblotting, Gene Expression Regulation, Neoplastic, DNA Primers, Tumor Escape, RNA, Small Interfering, Cell Line, Tumor, Chromatin Immunoprecipitation, Hypoxia-Inducible Factor 1, CD47 Antigen, Real-Time Polymerase Chain Reaction

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