Cited by 2,662Cancer, Hypoxia, and MetabolismAngiogenesis and VEGF in CancerCancer Cells and Metastasis

Tumor Hypoxia: Definitions and Current Clinical, Biologic, and Molecular Aspects

Hockel, M., Vaupel, P.·2001·JNCI Journal of the National Cancer Institute

Abstract

Tissue hypoxia results from an inadequate supply of oxygen (O(2)) that compromises biologic functions. Evidence from experimental and clinical studies increasingly points to a fundamental role for hypoxia in solid tumors. Hypoxia in tumors is primarily a pathophysiologic consequence of structurally and functionally disturbed microcirculation and the deterioration of diffusion conditions. Tumor hypoxia appears to be strongly associated with tumor propagation, malignant progression, and resistance to therapy, and it has thus become a central issue in tumor physiology and cancer treatment. Biochemists and clinicians (as well as physiologists) define hypoxia differently; biochemists define it as O(2)-limited electron transport, and physiologists and clinicians define it as a state of reduced O(2) availability or decreased O(2) partial pressure that restricts or even abolishes functions of organs, tissues, or cells. Because malignant tumors no longer execute functions necessary for homeostasis (such as the production of adequate amounts of adenosine triphosphate), the physiology-based definitions of the term "hypoxia" are not necessarily valid for malignant tumors. Instead, alternative definitions based on clinical, biologic, and molecular effects that are observed at O(2) partial pressures below a critical level have to be applied.

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Authors
Hockel, M., & Vaupel, P.
Affiliations
Johannes Gutenberg University Mainz (DE)
Corresponding author
Vaupel, P.
Venue
JNCI Journal of the National Cancer Institute
Published
2001-02-21
Volume
93
Issue
4
Pages
266-276
ISSN
  • 0027-8874 (ISSN-L)
  • 1460-2105
OpenAlex
W2125257427
Cited by
2,662
References
159
Citations by year
2026: 46 · 2025: 65 · 2024: 93 · 2023: 134 · 2022: 110 · 2021: 139 · 2020: 149 · 2019: 120 · 2018: 110 · 2017: 148 · 2016: 143 · 2015: 123 · 2014: 114 · 2013: 104 · 2012: 114
FWCI
5.27
Type
journal article
Language
en
Open access
closed
Locations
  • JNCI Journal of the National Cancer Institute (publishedVersion)
  • PubMed (publishedVersion)
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
  • Health Sciences › Medicine › Oncology › Cancer Cells and Metastasis
Keywords
tumor hypoxia, tissue hypoxia, solid tumors, tumor microcirculation, oxygen partial pressure, tumor progression, treatment resistance, tumor physiology, oxygen diffusion
MeSH terms
Animals, Humans, Neoplasms, Oxygen, Predictive Value of Tests, Prognosis, Risk Factors, Cell Hypoxia, Disease Progression

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