Cited by 111Cancer, Hypoxia, and MetabolismAngiogenesis and VEGF in CancerCancer, Lipids, and Metabolism

Tumor Cells Upregulate Normoxic HIF-1α in Response to Doxorubicin

Open access
Cao, Yiting, Eble, Joseph M., Moon, Ejung, Yuan, Hong, Weitzel, Douglas H., Landon, Chelsea D., Yu-Chih Nien, Charleen, Hanna, Gabi +3 more·2013·Cancer Research

Published version of a preprint

Abstract

Hypoxia-inducible factor 1 (HIF-1) is a master transcription factor that controls cellular homeostasis. Although its activation benefits normal tissue, HIF-1 activation in tumors is a major risk factor for angiogenesis, therapeutic resistance, and poor prognosis. HIF-1 activity is usually suppressed under normoxic conditions because of rapid oxygen-dependent degradation of HIF-1α. Here, we show that, under normoxic conditions, HIF-1α is upregulated in tumor cells in response to doxorubicin, a chemotherapeutic agent used to treat many cancers. In addition, doxorubicin enhanced VEGF secretion by normoxic tumor cells and stimulated tumor angiogenesis. Doxorubicin-induced accumulation of HIF-1α in normoxic cells was caused by increased expression and activation of STAT1, the activation of which stimulated expression of iNOS and its synthesis of nitric oxide (NO) in tumor cells. Mechanistic investigations established that blocking NO synthesis or STAT1 activation was sufficient to attenuate the HIF-1α accumulation induced by doxorubicin in normoxic cancer cells. To our knowledge, this is the first report that a chemotherapeutic drug can induce HIF-1α accumulation in normoxic cells, an efficacy-limiting activity. Our results argue that HIF-1α-targeting strategies may enhance doxorubicin efficacy. More generally, they suggest a broader perspective on the design of combination chemotherapy approaches with immediate clinical impact. Cancer Res; 73(20); 6230–42. ©2013 AACR.

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 · 10.1158/0008-5472.can-12-1345

Cites

50 of 50 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 normoxic cancer cell lines, doxorubicin-induced HIF-1α accumulation depends on STAT1 activity, leading to increase in iNOS and nitric oxide production.

    “In normoxic cancer cell lines, doxorubicin-induced HIF-1α accumulation was shown to depend on STAT1 activity, leading to increase in inducible nitric oxide synthase (iNOS) and nitric oxide production [396].”

    From HIF inhibition: Current strategies and clinical challenges (2026) · cites this paper as [396]

  • Tumor cells can partially compensate for anthracycline inhibition by inducing HIF-1α expression.

    “However, tumor cells can partially compensate for this inhibition by inducing HIF-1α expression.”

    From HIF inhibition: Current strategies and clinical challenges (2026) · cites this paper as [396]

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

2 retracted

Flagged first, then by citations

4 of the 54 references couldn’t be matched to a known paper.

Research works printed but not linked: 2

  1. [7]Ivan M Kondo K Yang H HIFalpha targeted for VHL-mediated destruction by proline hydroxylation: implications for O2 sensing Science 2001 292 464 8 11292862
  2. [28]Thomas M Finnegan CE Rogers KM STAT1: a modulator of chemotherapy-induced apoptosis Cancer Res 2004 64 8357 64 15548705

Cited by

Sorted by citations

Authors
Cao, Y., Eble, J. M., Moon, E., Yuan, H., Weitzel, D. H., Landon, C. D., Yu-Chih Nien, C., Hanna, G., Rich, J. N., Provenzale, J. M., & Dewhirst, M. W.
Affiliations
  • University of North Carolina at Chapel Hill (US)
  • Authors' Affiliations: Departments of 1Radiation Oncology,2Surgery, 3Pathology, and 4Radiology, Duke University Medical Center, Durham; 5Department of Radiology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina; 6Department of Radiology, Mayo Clinic, Rochester, Minnesota; 7Department of Radiation Oncology, Stanford University, Stanford, California; and 8Department of Stem Cell Biology and Regenerative Medicine, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio
Corresponding author
  • Cao, Yiting
  • Dewhirst, Mark W.
Venue
Cancer Research
Published
2013-10-14
Volume
73
Issue
20
Pages
6230-6242
ISSN
  • 0008-5472 (ISSN-L)
  • 1538-7445
OpenAlex
W2143643269
Cited by
111
References
54
Citations by year
2026: 4 · 2025: 8 · 2024: 3 · 2023: 6 · 2022: 12 · 2021: 10 · 2020: 11 · 2019: 12 · 2018: 11 · 2017: 3 · 2016: 7 · 2015: 9 · 2014: 13 · 2013: 2
FWCI
3.64
Type
journal article
Language
en
Open access
Locations
  • Cancer Research (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Institutes of Health (5p01ca042745-23)
  • National Cancer Institute (P01-CA-42745, R01CA040355, R01 CA40355, P01-CA042745, P50CA068438, P30CA014236)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › Cancer, Hypoxia, and Metabolism
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Angiogenesis and VEGF in Cancer
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › Cancer, Lipids, and Metabolism
Keywords
HIF-1α, doxorubicin, normoxia, cancer cells, STAT1, inducible nitric oxide synthase, nitric oxide, vascular endothelial growth factor, tumor angiogenesis, chemoresistance, combination chemotherapy, HIF-1α stabilization
MeSH terms
Animals, Antibiotics, Antineoplastic, Breast Neoplasms, Doxorubicin, Female, Humans, Mammary Neoplasms, Experimental, Mice, Nude, Nitric Oxide, Random Allocation, Transcription Factors, Up-Regulation, Cell Line, Tumor, STAT1 Transcription Factor, Mice, Hypoxia-Inducible Factor 1, alpha Subunit, Nitric Oxide Synthase Type II, MCF-7 Cells

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