Evidence map›Paper›PMID 33115807›Full record

ArticleCancer research2020

Hypoxia Induces Transcriptional and Translational Downregulation of the Type I IFN Pathway in Multiple Cancer Cell Types.

Ana Miar, Esther Arnaiz, Esther Bridges, Shaunna Beedie, Adam P Cribbs, Damien J Downes, Robert A Beagrie, Jan Rehwinkel, Adrian L Harris

Open access · greenAbstract read
In one paragraph

Article in Cancer research, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 64 papers.

0numbers the graph read from it
0cells of the map it votes in
64citing papers in PubMed
3.7field-weighted citation impact, top 6% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

64 citing papers in PubMed, 78 citations in OpenAlex.

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4 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

9 authors at 4 institutions in 1 country.

Ana MiarDepartment of Medical Oncology, Molecular Oncology Laboratories, Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Oxford, United Kingdom.ORCID 0000-0003-0888-3250
Esther ArnaizDepartment of Medical Oncology, Molecular Oncology Laboratories, Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Oxford, United Kingdom.ORCID 0000-0001-7838-4575
Esther BridgesDepartment of Medical Oncology, Molecular Oncology Laboratories, Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Oxford, United Kingdom.
Shaunna BeedieDepartment of Medical Oncology, Molecular Oncology Laboratories, Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Oxford, United Kingdom.
Adam P CribbsBotnar Research Center, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, NIHR Oxford BRU, University of Oxford, United Kingdom.ORCID 0000-0001-5288-3077
Damien J DownesMedical Research Council (MRC) Molecular Hematology Unit, MRC Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, United Kingdom.ORCID 0000-0002-5034-0869
Robert A BeagrieMedical Research Council (MRC) Molecular Hematology Unit, MRC Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, United Kingdom.ORCID 0000-0003-1076-5595
Jan RehwinkelMedical Research Council Human Immunology Unit, Medical Research Council Weatherall Institute of Molecular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, United Kingdom.ORCID 0000-0003-3841-835X
Adrian L HarrisDepartment of Medical Oncology, Molecular Oncology Laboratories, Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Oxford, United Kingdom. adrian.harris@oncology.ox.ac.uk.ORCID 0000-0003-1376-8409
John Radcliffe Hospital · GBMRC Weatherall Institute of Molecular Medicine · GBMRC Human Immunology Unit · GBNuffield Orthopaedic Centre · GB

Funding

Cancer Research UK 18974Cancer Research UK A4990Cancer Research UK A6292Medical Research Council MC_UU_00008/8Wellcome Trust 209181/Z/17/Z
6 · The paper itself

Abstract

Hypoxia is a common phenomenon in solid tumors and is strongly linked to hallmarks of cancer. Recent evidence has shown that hypoxia promotes local immune suppression. Type I IFN supports cytotoxic T lymphocytes by stimulating the maturation of dendritic cells and enhancing their capacity to process and present antigens. However, little is known about the relationship between hypoxia and the type I IFN pathway, which comprises the sensing of double-stranded RNA and DNA (dsRNA/dsDNA) followed by IFNα/β secretion and transcriptional activation of IFN-stimulated genes (ISG). In this study, we determined the effects of hypoxia on the type I IFN pathway in breast cancer and the mechanisms involved. In cancer cell lines and xenograft models, mRNA and protein expressions of the type I IFN pathway were downregulated under hypoxic conditions. This pathway was suppressed at each level of signaling, from the dsRNA sensors RIG-I and MDA5, the adaptor MAVS, transcription factors IRF3, IRF7, and STAT1, and several ISG including RIG-I, IRF7, STAT1, and ADAR-p150. Importantly, IFN secretion was reduced under hypoxic conditions. HIF1α- and HIF2α-mediated regulation of gene expression did not explain most of the effects. However, ATAC-seq data revealed in hypoxia that peaks with STAT1 and IRF3 motifs had decreased accessibility. Collectively, these results indicate that hypoxia leads to an overall downregulation of the type I IFN pathway due to repressed transcription and lower chromatin accessibility in an HIF1/2α-independent manner, which could contribute to immunosuppression in hypoxic tumors. SIGNIFICANCE: These findings characterize a new mechanism of immunosuppression by hypoxia via downregulation of the type I IFN pathway and its autocrine/paracrine effects on tumor growth.

Indexed as

Tumor HypoxiaAnimalsBreast NeoplasmsCell Line, TumorDown-RegulationFemaleGene Expression ProfilingGene Expression Regulation, NeoplasticHumansHypoxia-Inducible Factor 1, alpha SubunitInterferon Regulatory Factor-3Interferon Type IMiceNeoplasmsRNA, MessengerSignal TransductionHIF1A protein, humanHypoxia-Inducible Factor 1, alpha SubunitInterferon Regulatory Factor-3Interferon Type IIRF3 protein, humanRNA, Messenger

Identifiers

PMID33115807
PMCPMC7611234
OpenAlexW3096394571

What OpenQuestion holds

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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.