Evidence map›Paper›PMID 29137331›Full record

ArticleOncotarget2017

HDAC inhibitors enhance the immunotherapy response of melanoma cells.

Laurence Booth, Jane L Roberts, Andrew Poklepovic, John Kirkwood, Paul Dent

Open access · diamondAbstract read
In one paragraph

Article in Oncotarget, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 98 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
98citing papers in PubMed, 1 pooled it
6.5field-weighted citation impact, top 2% 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

98 citing papers in PubMed, 1 synthesis or guideline pooled it, 133 citations in OpenAlex.

  1. Pooled it
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  12. Getting the right combination to break the epigenetic code.Nature reviews. Clinical oncology · 2025
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38 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

5 authors at 2 institutions in 1 country.

Laurence BoothDepartment of Biochemistry and Molecular Biology, Virginia Commonwealth University, Richmond, VA 23298-0035, USA.
Jane L RobertsDepartment of Biochemistry and Molecular Biology, Virginia Commonwealth University, Richmond, VA 23298-0035, USA.
Andrew PoklepovicDepartment of Medicine, Virginia Commonwealth University, Richmond, VA 23298-0035, USA.
John KirkwoodUniversity of Pittsburgh Cancer Institute, Melanoma and Skin Cancer Program, Hillman Cancer Research Pavilion Laboratory, Pittsburgh, PA 15232, USA.
Paul DentDepartment of Biochemistry and Molecular Biology, Virginia Commonwealth University, Richmond, VA 23298-0035, USA.
Virginia Commonwealth University · USUPMC Hillman Cancer Center · US

Funding

Pemetrexed and sildenafil for lung cancerR01CA192613 · NCI · VIRGINIA COMMONWEALTH UNIVERSITY · PI DENT, PAUL · 2015 to 2019
$1.6M
NCI NIH HHS R01 CA192613
6 · The paper itself

Abstract

We focused on the ability of the pan-histone deacetylase (HDAC) inhibitors AR42 and sodium valproate to alter the immunogenicity of melanoma cells. Treatment of melanoma cells with HDAC inhibitors rapidly reduced the expression of multiple HDAC proteins as well as the levels of PD-L1, PD-L2 and ODC, and increased expression of MHCA. In a cell-specific fashion, melanoma isolates released the immunogenic protein HMGB1 into the extracellular environment. Very similar data were obtained in ovarian and H&NSCC PDX isolates, and in established tumor cell lines from the lung and kidney. Knock down of HDAC1, HDAC3, HDAC8 and HDAC10, but not HDAC6, recapitulated the effects of the HDAC inhibitors on the immunotherapy biomarkers. Using B16 mouse melanoma cells we discovered that pre-treatment with AR42 or sodium valproate enhanced the anti-tumor efficacy of an anti-PD-1 antibody and of an anti-CTLA4 antibody. In the B16 model, both AR42 and sodium valproate enhanced the anti-tumor efficacy of the multi-kinase inhibitor pazopanib. In plasma from animals exposed to [HDAC inhibitor + anti-PD-1], but not [HDAC inhibitor + anti-CTLA4], the levels of CCL2, CCL5, CXCL9 and CXCL2 were increased. The cytokine data from HDAC inhibitor plus anti-PD-1 exposed tumors correlated with increased activated T cell, M1 macrophage, neutrophil and NK cell infiltration. Collectively, our data support the use of pan-HDAC inhibitors in combination with kinase inhibitors or with checkpoint inhibitor antibodies as novel melanoma therapeutic strategies.

Indexed as

autophagyHDAC inhibitorimmunotherapymelanomapazopanib

Identifiers

PMID29137331
PMCPMC5669957
OpenAlexW2614598056

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.