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Targeting Hypoxia, HIF-1, and Tumor Glucose Metabolism to Improve Radiotherapy Efficacy
Abstract
Radiotherapy, an important treatment modality in oncology, kills cells through induction of oxidative stress. However, malignant tumors vary in their response to irradiation as a consequence of resistance mechanisms taking place at the molecular level. It is important to understand these mechanisms of radioresistance, as counteracting them may improve the efficacy of radiotherapy. In this review, we describe how the hypoxia-inducible factor 1 (HIF-1) pathway has a profound effect on the response to radiotherapy. The main focus will be on HIF-1-controlled protection of the vasculature postirradiation and on HIF-1 regulation of glycolysis and the pentose phosphate pathway. This aberrant cellular metabolism increases the antioxidant capacity of tumors, thereby countering the oxidative stress caused by irradiation. From the results of translational studies and the first clinical phase I/II trials, it can be concluded that targeting HIF-1 and tumor glucose metabolism at several levels reduces the antioxidant capacity of tumors, affects the tumor microenvironment, and sensitizes various solid tumors to irradiation.
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HIF-1α-mediated alterations in tumor glucose metabolism may also affect cellular responses to IR.
“HIF-1α-mediated alterations in tumor glucose metabolism may also affect cellular responses to IR (Meijer et al., 2012).”
From Therapeutic targeting of hypoxia and hypoxia-inducible factors in cancer (2016) · cites this paper as Meijer et al., 2012
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Metadata
- Authors
- Meijer, T. W. H., Kaanders, J. H. A. M., Span, P. N., & Bussink, J.
- Affiliations
- Radboud University Medical Center (NL)
- Venue
- Clinical Cancer Research
- Published
- 2012-10-14
- Volume
- 18
- Issue
- 20
- Pages
- 5585-5594
- ISSN
- 1078-0432 (ISSN-L)
- 1557-3265
- OpenAlex
- W2116974984
- Cited by
- 433
- References
- 11
- Citations by year
- 2026: 14 · 2025: 14 · 2024: 23 · 2023: 30 · 2022: 33 · 2021: 44 · 2020: 30 · 2019: 36 · 2018: 27 · 2017: 38 · 2016: 46 · 2015: 34 · 2014: 43 · 2013: 17 · 2012: 4
- FWCI
- 2.27
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Clinical Cancer Research (publishedVersion)
- PubMed (publishedVersion)
- Radboud Repository (Radboud University) (submittedVersion)
- Topics
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › Cancer, Hypoxia, and Metabolism
- Physical Sciences › Physics and Astronomy › Radiation › Radiation Therapy and Dosimetry
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Angiogenesis and VEGF in Cancer
- Keywords
- radioresistance (biology), HIF-1, tumor hypoxia, tumor glucose metabolism, glycolysis, pentose phosphate pathway, oxidative stress, antioxidant capacity, tumor vasculature, tumor microenvironment, radiosensitization, radiotherapy efficacy
- MeSH terms
- Glucose, Humans, Neoplasms, Neovascularization, Pathologic, Radiation Tolerance, Signal Transduction, Cell Hypoxia, Hypoxia-Inducible Factor 1, alpha Subunit, Molecular Targeted Therapy, Tumor Microenvironment
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