Cited by 17Cancer, Hypoxia, and MetabolismCancer Immunotherapy and BiomarkersImmune cells in cancer

Implications of Hyperoxia over the Tumor Microenvironment: An Overview Highlighting the Importance of the Immune System

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Herrera-Campos, Ana Belén, Zamudio-Martinez, Esteban, Delgado-Bellido, Daniel, Fernández-Cortés, Mónica, Montuenga, Luis M., Oliver, F. Javier, Garcia-Diaz, Angel·2022·Cancers

Abstract

Hyperoxia is used in order to counteract hypoxia effects in the TME (tumor microenvironment), which are described to boost the malignant tumor phenotype and poor prognosis. The reduction of tumor hypoxic state through the formation of a non-aberrant vasculature or an increase in the toxicity of the therapeutic agent improves the efficacy of therapies such as chemotherapy. Radiotherapy efficacy has also improved, where apoptotic mechanisms seem to be implicated. Moreover, hyperoxia increases the antitumor immunity through diverse pathways, leading to an immunopermissive TME. Although hyperoxia is an approved treatment for preventing and treating hypoxemia, it has harmful side-effects. Prolonged exposure to high oxygen levels may cause acute lung injury, characterized by an exacerbated immune response, and the destruction of the alveolar–capillary barrier. Furthermore, under this situation, the high concentration of ROS may cause toxicity that will lead not only to cell death but also to an increase in chemoattractant and proinflammatory cytokine secretion. This would end in a lung leukocyte recruitment and, therefore, lung damage. Moreover, unregulated inflammation causes different consequences promoting tumor development and metastasis. This process is known as protumor inflammation, where different cell types and molecules are implicated; for instance, IL-1β has been described as a key cytokine. Although current results show benefits over cancer therapies using hyperoxia, further studies need to be conducted, not only to improve tumor regression, but also to prevent its collateral damage.

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Crossref · 10.3390/cancers14112740

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  • HBO promotes PD-1 Ab delivery and T-cell infiltration into the tumor parenchyma by depleting major components of the ECM, such as collagen and fibronectin.

    “HBO also promoted PD‐1 Ab delivery and T‐cell infiltration into the tumor parenchyma by depleting major components of the ECM, such as collagen and fibronectin.”

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Authors
Herrera-Campos, A. B., Zamudio-Martinez, E., Delgado-Bellido, D., Fernández-Cortés, M., Montuenga, L. M., Oliver, F. J., & Garcia-Diaz, A.
Affiliations
  • Consejo Superior de Investigaciones Científicas (ES)
  • Instituto de Parasitología y Biomedicina López Neyra, CSIC, 18016 Granada, Spain
  • Navarre Institute of Health Research (ES)
Corresponding author
Oliver, F. Javier
Venue
Cancers
Publisher
MDPI AG
Published
2022-05-31
Volume
14
Issue
11
Pages
2740
ISSN
2072-6694 (ISSN-L)
OpenAlex
W4281946594
Cited by
17
References
118
Citations by year
2026: 3 · 2025: 1 · 2024: 7 · 2023: 4 · 2022: 2
FWCI
0.42
Type
journal article
Language
en
Open access
Locations
  • Cancers (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DIGITAL.CSIC (Spanish National Research Council (CSIC)) (submittedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
  • Agencia Estatal de Investigación, Spanish Ministry of Economy and Competitiveness (SAF2012–40011-C02–01, SAF2015–70520-R, RTI2018–098968-B-I00, RTICC RD12/0036/0026, PID2019-104867RB-I00/AEI/, CIBERONC ISCIII CB16/12/00421, CB16/12/00273, P10-CTS-0662)
  • Instituto de Salud Carlos III—Fondo Europeo de Desarrollo Regional (SAF2012–40011-C02–01, SAF2015–70520-R, RTI2018–098968-B-I00, RTICC RD12/0036/0026, PID2019-104867RB-I00/AEI/, CIBERONC ISCIII CB16/12/00421, CB16/12/00273, P10-CTS-0662)
  • Junta de Andalucía (SAF2012–40011-C02–01, SAF2015–70520-R, RTI2018–098968-B-I00, RTICC RD12/0036/0026, PID2019-104867RB-I00/AEI/, CIBERONC ISCIII CB16/12/00421, CB16/12/00273, P10-CTS-0662)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › Cancer, Hypoxia, and Metabolism
  • Health Sciences › Medicine › Oncology › Cancer Immunotherapy and Biomarkers
  • Life Sciences › Immunology and Microbiology › Immunology › Immune cells in cancer
Keywords
hyperoxia, tumor microenvironment, tumor hypoxia, antitumor immunity, reactive oxygen species, acute lung injury, IL-1β, chemotherapy efficacy, radiotherapy, apoptosis, metastasis, cytokine production

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