Cited by 1,354Cancer, Hypoxia, and MetabolismGlioma Diagnosis and TreatmentCancer Cells and Metastasis

Hypoxia-inducible factors regulate tumorigenic capacity of glioma stem cells

Open access
Li, Zhizhong, Bao, Shideng, Wu, Qiulian, Wang, Hui, Eyler, Christine, Sathornsumetee, Sith, Shi, Qing, Cao, Yiting +4 more·2009·Cancer Cell

Abstract

Glioblastomas are lethal cancers characterized by florid angiogenesis promoted in part by glioma stem cells (GSCs). Because hypoxia regulates angiogenesis, we examined hypoxic responses in GSCs. We now demonstrate that hypoxia-inducible factor HIF2alpha and multiple HIF-regulated genes are preferentially expressed in GSCs in comparison to non-stem tumor cells and normal neural progenitors. In tumor specimens, HIF2alpha colocalizes with cancer stem cell markers. Targeting HIFs in GSCs inhibits self-renewal, proliferation, and survival in vitro, and attenuates tumor initiation potential of GSCs in vivo. Analysis of a molecular database reveals that HIF2A expression correlates with poor glioma patient survival. Our results demonstrate that GSCs differentially respond to hypoxia with distinct HIF induction patterns, and HIF2alpha might represent a promising target for antiglioblastoma therapies.

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Crossref · 10.1016/j.ccr.2009.03.018

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  • Because HIF-2α is strongly expressed in NB tumor cell cytoplasm at physiological oxygen (5% O2), this may indicate additional cytoplasmic functions for HIF-2α independent of HIF-1β-dependent transcription, such as mRNA translation regulation.

    “Since HIF-2α is strongly expressed in the cytoplasm of NB tumor cells at physiological oxygen levels (5% O2), this could suggest additional largely unexplored functions of HIF-2α in the cytoplasm, independent of HIF-1β-dependent transcription, such as regulation of mRNA translation [9,43].”

    From Revisiting the HIF switch in the tumor and its immune microenvironment. (2022) · cites this paper as [43]

    Split into 2 atoms — 0 confirmed, 1 partially supported, 0 disputed, 0 misattributed, 1 unverifiable. Expand the claim to see per-atom verdicts.

    Experimental — accuracy not yet measured
  • In NB specimens, HIF-1α expression negatively correlates with blood vessel presence, indicating HIF-1α is expressed only in hypoxic cells.

    “In NB clinical specimens, HIF-1α expression negatively correlates with the presence of blood vessels indicating that HIF-1α is expressed exclusively in hypoxic cells [43].”

    From Revisiting the HIF switch in the tumor and its immune microenvironment. (2022) · cites this paper as [43]

    The Results section on HIF expression in glioma stem cells reports HIF-1α staining near regions of necrosis in human glioblastoma specimens and increased expression under severe hypoxia. It does not study NB clinical specimens, report a negative correlation with blood-vessel presence, or establish that HIF-1α is expressed exclusively in hypoxic cells. No page number is available in our copy. (LLM, conf=0.85)

    Experimental — accuracy not yet measured
  • HIF-2α is found in dense perivascular cell clusters with a neural crest-like, HIF-1α-negative phenotype, suggesting these cells are not hypoxic.

    “However, HIF-2α is located in dense clusters of cells adjacent to blood vessels, referred to as the perivascular niche, which have a neural crest-like phenotype, and are HIF-1α negative, suggesting they are not hypoxic [43].”

    From Revisiting the HIF switch in the tumor and its immune microenvironment. (2022) · cites this paper as [43]

    The Results section (page unavailable) reports HIF-2α-positive cells around proliferating blood vessels, supporting the perivascular location. It does not describe those cells as dense clusters with a neural crest-like phenotype or establish that they are HIF-1α-negative. The Discussion (page unavailable) cautions that tumor vasculature can be poorly functional and associated with hypoxia, so proximity to a vessel does not establish that the cells are not hypoxic. (LLM, conf=0.88)

    Experimental — accuracy not yet measured
  • PT2385 treatment had no effect on tumor growth, HIF target gene transcription, or chemotherapy response.

    “However, treatment with PT2385 had no effect on tumor growth, did not impact transcription of HIF target genes and did not modulate chemotherapy response [43].”

    From Revisiting the HIF switch in the tumor and its immune microenvironment. (2022) · cites this paper as [43]

    The Results describe HIF1α and HIF2α shRNA knockdown in glioma stem cells, not PT2385 treatment. Searches for PT2385 and chemotherapy response found no passage assessing the drug’s effects on tumor growth, HIF target-gene transcription, or chemotherapy response. (LLM, conf=0.76)

    Experimental — accuracy not yet measured
  • HIF-2α is an important transcription factor in cancer progression and leads to poor prognosis.

    “Given that HIF-2α is an important transcription factor in cancer progression and leads to poor prognosis69,70”

    From Glutamine reliance in cell metabolism (2020) · cites this paper as [70]

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Authors
Li, Z., Bao, S., Wu, Q., Wang, H., Eyler, C., Sathornsumetee, S., Shi, Q., Cao, Y., Lathia, J., McLendon, R. E., Hjelmeland, A. B., & Rich, J. N.
Affiliations
  • Duke Medical Center (US)
  • Cleveland Clinic (US)
Corresponding author
Rich, Jeremy N.
Venue
Cancer Cell
Publisher
Elsevier BV
Published
2009-06
Volume
15
Issue
6
Pages
501-513
ISSN
1535-6108 (ISSN-L)
OpenAlex
W2039075677
Cited by
1,354
References
65
Citations by year
2026: 41 · 2025: 40 · 2024: 49 · 2023: 72 · 2022: 92 · 2021: 98 · 2020: 72 · 2019: 75 · 2018: 74 · 2017: 93 · 2016: 97 · 2015: 97 · 2014: 96 · 2013: 80 · 2012: 101
FWCI
30.90
Type
journal article
Language
en
Open access
Locations
  • Cancer Cell (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
  • National Cancer Institute (CA 116659, R01CA116659, CA112958, R01CA129958)
  • National Institute of Neurological Disorders and Stroke (K02NS047409, R01NS054276, NS054276, NS047409)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › Cancer, Hypoxia, and Metabolism
  • Health Sciences › Medicine › Genetics › Glioma Diagnosis and Treatment
  • Health Sciences › Medicine › Oncology › Cancer Cells and Metastasis
Keywords
HIF-2α, glioma stem cells, glioblastoma, hypoxia, angiogenesis, self-renewal, tumor initiation, cancer stem cell markers, patient survival, therapeutic target
MeSH terms
Endothelial PAS Domain-Containing Protein 1, Animals, Brain Neoplasms, Cell Survival, Cells, Cultured, Glioblastoma, Humans, Mice, Inbred BALB C, Mice, Nude, Neoplasm Transplantation, Neovascularization, Pathologic, Stem Cells, Biomarkers, Tumor, Neoplastic Stem Cells, Cell Hypoxia, Vascular Endothelial Growth Factor A, Cell Proliferation, Mice, Basic Helix-Loop-Helix Proteins, Hypoxia-Inducible Factor 1, alpha Subunit

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