Evidence map›Paper›PMID 31653272›Full record

ArticleJournal for immunotherapy of cancer2019

Immunogenicity of prostate cancer is augmented by BET bromodomain inhibition.

Wendy Mao, Ali Ghasemzadeh, Zachary T Freeman, Aleksandar Obradovic, Matthew G Chaimowitz, Thomas R Nirschl, Emily McKiernan, Srinivasan Yegnasubramanian, Charles G Drake

Open access · goldAbstract read
In one paragraph

Article in Journal for immunotherapy of cancer, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 58 papers, 5 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
58citing papers in PubMed, 5 pooled it
3.9field-weighted citation impact, top 5% 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

58 citing papers in PubMed, 5 syntheses or guidelines pooled it, 68 citations in OpenAlex.

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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 6 institutions in 1 country.

Wendy MaoDepartment of Oncology, Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, MD, 21287, USA.
Ali GhasemzadehDepartment of Oncology, Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, MD, 21287, USA.
Zachary T FreemanUnit for Laboratory Animal Medicine (ULAM), Michigan Medicine, University of Michigan, Ann Arbor, MI, 48109, USA.
Aleksandar ObradovicColumbia Center for Translational Immunology, Columbia University Medical Center, New York, NY, 10032, USA.
Matthew G ChaimowitzColumbia Center for Translational Immunology, Columbia University Medical Center, New York, NY, 10032, USA.
Thomas R NirschlDepartment of Oncology, Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, MD, 21287, USA.
Emily McKiernanColumbia Center for Translational Immunology, Columbia University Medical Center, New York, NY, 10032, USA.
Srinivasan YegnasubramanianDepartment of Oncology, Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, MD, 21287, USA.
Charles G DrakeColumbia Center for Translational Immunology, Columbia University Medical Center, New York, NY, 10032, USA. cgd2139@cumc.columbia.edu.
Columbia University Irving Medical Center · USJohns Hopkins Medicine · USHerbert Irving Comprehensive Cancer CenterJohns Hopkins University · USSidney Kimmel Comprehensive Cancer Center · USUniversity of Michigan–Ann Arbor · US

Funding

MEDICAL SCIENTIST TRAINING PROGRAMT32GM007309 · NIGMS · JOHNS HOPKINS UNIVERSITY · PI COX, ANDREA L · 1985 to 2019
$43.2M
NIGMS NIH HHS T32 GM007309
6 · The paper itself

Abstract

backgroundProstate cancer responds poorly to current immunotherapies. Epigenetic therapies such as BET Bromodomain inhibition can change the transcriptome of tumor cells, possibly making them more immunogenic and thus susceptible to immune targeting.

methodsWe characterized the effects of BET bromodomain inhibition using JQ1 on PD-L1 and HLA-ABC expression in two human prostate cell lines, DU145 and PC3. RNA-Seq was performed to assess changes on a genome-wide level. A cytotoxic T cell killing assay was performed in MC38-OVA cells treated with JQ1 to demonstrate increased immunogenicity. In vivo experiments in the Myc-Cap model were conducted to show the effects of JQ1 administration in concert with anti-CTLA-4 checkpoint blockade.

resultsHere, we show that targeting BET bromodomains using the small molecule inhibitor JQ1 decreased PD-L1 expression and mitigated tumor progression in prostate cancer models. Mechanistically, BET bromodomain inhibition increased MHC I expression and increased the immunogenicity of tumor cells. Transcriptional profiling showed that BET bromodomain inhibition regulates distinct networks of antigen processing and immune checkpoint molecules. In murine models, treatment with JQ1 was additive with anti-CTLA-4 immunotherapy, resulting in an increased CD8/Treg ratio.

conclusionsBET Bromodomain inhibition can mediate changes in expression at a genome wide level in prostate cancer cells, resulting in an increased susceptibility to CD8 T cell targeting. These data suggest that combining BET bromodomain inhibition with immune checkpoint blockade may have clinical activity in prostate cancer patients.

Indexed as

AnimalsAntineoplastic AgentsBiomarkers, TumorBromodomain Containing ProteinsCD8-Positive T-LymphocytesCell Line, TumorCytotoxicity, ImmunologicGene Expression ProfilingGene Expression Regulation, NeoplasticHLA AntigensHumansImmunityMaleMiceProstatic NeoplasmsProteinsAntineoplastic AgentsBiomarkers, Tumorbromodomain and extra-terminal domain protein, humanBromodomain Containing ProteinsHLA AntigensProteinsBETBromodomainCancer immunologyCTLA-4EpigeneticImmune checkpoint blockadeImmune checkpoint inhibitionImmunotherapyProstate cancerTreg

Identifiers

PMID31653272
PMCPMC6814994
OpenAlexW2982272998

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

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.