Cited by 119Cancer Immunotherapy and BiomarkersCancer, Hypoxia, and MetabolismHead and Neck Cancer Studies

Tumor hypoxia is associated with resistance to PD-1 blockade in squamous cell carcinoma of the head and neck

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Zandberg, Dan P, Menk, Ashley V, Velez, Maria, Normolle, Daniel, DePeaux, Kristin, Liu, Angen, Ferris, Robert L, Delgoffe, Greg M·2021·Journal for ImmunoTherapy of Cancer

Abstract

The majority of patients with recurrent/metastatic squamous cell carcinoma of the head and neck (HNSCC) (R/M) do not benefit from anti-PD-1 therapy. Hypoxia induced immunosuppression may be a barrier to immunotherapy. Therefore, we examined the metabolic effect of anti-PD-1 therapy in a murine MEER HNSCC model as well as intratumoral hypoxia in R/M patients. In order to characterize the tumor microenvironment in PD-1 resistance, a MEER cell line was created from the parental line that are completely resistant to anti-PD-1. These cell lines were then metabolically profiled using seahorse technology and injected into C57/BL6 mice. After tumor growth, mice were pulsed with pimonidazole and immunofluorescent imaging was performed to analyze hypoxia and T cell infiltration. To validate the preclinical results, we analyzed tissues from R/M patients (n=36) treated with anti-PD-1 mAb, via immunofluorescent imaging for number of CD8+ T cells (CD8), Tregs and the percent area (CAIX) and mean intensity (I) of carbonic anhydrase IX in tumor. We analyzed disease control rate (DCR), progression free survival (PFS), and overall survival (OS) using proportional odds and proportional hazards (Cox) regression. We found that anti-PD-1 resistant MEER has significantly higher oxidative metabolism, while there was no difference in glycolytic metabolism. Intratumoral hypoxia was significantly increased and CD8+ T cells decreased in anti-PD-1 resistant tumors compared with parental tumors in the same mouse. In R/M patients, lower tumor hypoxia by CAIX/I was significantly associated with DCR (p=0.007), PFS, and OS, and independently associated with response (p=0.028) and PFS (p=0.04) in a multivariate model including other significant immune factors. During PD-1 resistance, tumor cells developed increased oxidative metabolism leading to increased intratumoral hypoxia and a decrease in CD8+ T cells. Lower tumor hypoxia was independently associated with increased efficacy of anti-PD-1 therapy in patients with R/M HNSCC. To our knowledge this is the first analysis of the effect of hypoxia in this patient population and highlights its importance not only as a predictive biomarker but also as a potential target for therapeutic intervention.

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  • Zandberg et al. reported that in an animal model of HNSCC, disease control rate and survival were altered in mice with intra-tumoral hypoxia, rendering them resistant to anti-PD-1 immunotherapy.

    “Zandberg et al. reported that in an animal model of HNSCC, disease control rate (DCR) and survival were altered in mice with intra-tumoral hypoxia, rendering them resistant to anti-PD-1 immunotherapy [128].”

    From Immune Checkpoint Inhibitors in Cancer Therapy (2022) · cites this paper as [128]

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Authors
Zandberg, D. P., Menk, A. V., Velez, M., Normolle, D., DePeaux, K., Liu, A., Ferris, R. L., & Delgoffe, G. M.
Affiliations
  • UPMC Hillman Cancer Center (US)
  • University of Pittsburgh (US)
Corresponding author
Delgoffe, Greg M
Venue
Journal for ImmunoTherapy of Cancer
Publisher
BMJ
Published
2021-05
Volume
9
Issue
5
Pages
e002088
ISSN
2051-1426 (ISSN-L)
OpenAlex
W3161451006
Cited by
119
References
22
Citations by year
2026: 9 · 2025: 16 · 2024: 33 · 2023: 35 · 2022: 16 · 2021: 9 · 2013: 1
FWCI
8.55
Type
journal article
Language
en
Open access
Locations
  • Journal for ImmunoTherapy of Cancer (publishedVersion, cc-by-nc)
  • PubMed Central (publishedVersion, cc-by-nc)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
National Cancer Institute (P30CA047904, P50CA097190)
Topics
  • Health Sciences › Medicine › Oncology › Cancer Immunotherapy and Biomarkers
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cancer Research › Cancer, Hypoxia, and Metabolism
  • Health Sciences › Medicine › Otorhinolaryngology › Head and Neck Cancer Studies
Keywords
tumor hypoxia, anti-PD-1 resistance, head and neck squamous cell carcinoma, oxidative metabolism, glycolytic metabolism, carbonic anhydrase IX, CD8+ T cell infiltration, regulatory T cells, tumor microenvironment, pimonidazole, predictive biomarkers, immunotherapy response, cancer metabolism
MeSH terms
Tumor Hypoxia, Antineoplastic Agents, Immunological, Squamous Cell Carcinoma of Head and Neck, Progression-Free Survival, Immune Checkpoint Inhibitors, Adult, Aged, Aged, 80 and over, Animals, Energy Metabolism, Female, Head and Neck Neoplasms, Humans, Male, Mice, Inbred C57BL, Middle Aged, Oxidation-Reduction, Retrospective Studies, T-Lymphocytes, Signal Transduction, Lymphocytes, Tumor-Infiltrating, Drug Resistance, Neoplasm, Xenograft Model Antitumor Assays, Cell Line, Tumor, Tumor Burden, Mice, Tumor Microenvironment, Programmed Cell Death 1 Receptor

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