ArticleOncotarget2016
The IDO1 selective inhibitor epacadostat enhances dendritic cell immunogenicity and lytic ability of tumor antigen-specific T cells.
Article in Oncotarget, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 73 papers, 1 of them a synthesis that pooled it.
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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.
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Who cites it
73 citing papers in PubMed, 1 synthesis or guideline pooled it, 142 citations in OpenAlex.
- Uncovering the research evolution and hotspots of metabolism in renal cell carcinoma over the last decade.Frontiers in oncology · 2025Pooled it
- Trial
- Quick efficacy seeking trial (QuEST1): a novel combination immunotherapy study designed for rapid clinical signal assessment metastatic castration-resistant prostate cancer.Journal for immunotherapy of cancer · 2018Trial
- Dynamic remodeling of amino acid metabolism in tumor-associated macrophages: Fueling immunosuppression, reshaping tumor niches, and unlocking metabolic checkpoints.Journal of advanced research · 2026Review
- Nexus of IDO1/Kynurenine Pathway to T-Cell Exhaustion: Hypoxia-Induced Tryptophan Metabolism in Glioblastoma.Metabolites · 2026Review
- Metabolic characteristics in hepatocellular carcinoma: amino acid metabolic reprogramming.Molecular cancer · 2026Review
- Modulation of the tumor microenvironment by the ubiquitin-proteasome system in colorectal cancer.Journal of translational medicine · 2025Review
- Dendritic cells: understanding ontogeny, subsets, functions, and their clinical applications.Molecular biomedicine · 2025Review
- Review
- Integrative multi-omics reveal NSUN2 facilitates glycolysis and histone lactylation-driven immune evasion in renal carcinoma.Genes and immunity · 2025Article
- Tryptophan metabolism: From physiological functions to key roles and therapeutic targets in cancer (Review).Oncology reports · 2025Review
- Pathological Mechanisms Involved in HIV-Associated Lymphomagenesis: Novel Targeted Therapeutic Approaches.Cells · 2025Review
- Targeting the Kynurenine Pathway: A Novel Approach in Tumor Therapy.Expert reviews in molecular medicine · 2025Review
- Role of Kynurenine and Its Derivatives in Liver Diseases: Recent Advances and Future Clinical Perspectives.International journal of molecular sciences · 2025Review
- Targeting Wnt-driven metabolic adaptations in cancer: integrating glycolysis, glutaminolysis, IDO1-mediated immune evasion, and therapeutic delivery strategies.Frontiers in cell and developmental biology · 2025Review
- Crosstalk between the tumor immune microenvironment and metabolic reprogramming in pancreatic cancer: new frontiers in immunotherapy.Frontiers in immunology · 2025Review
- Metabolic targeting of regulatory T cells in oral squamous cell carcinoma: new horizons in immunotherapy.Molecular cancer · 2024Review
- Flavonoids as modulators of metabolic reprogramming in renal cell carcinoma (Review).Oncology reports · 2024Review
- Cancer cell metabolism and antitumour immunity.Nature reviews. Immunology · 2024Review
- Identification and validation of tryptophan metabolism-related lncRNAs in lung adenocarcinoma prognosis and immune response.Journal of cancer research and clinical oncology · 2024Article
13 more citing papers are in PubMed but not listed here.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
16 authors at 4 institutions in 1 country.
Funding
Abstract
Epacadostat is a novel inhibitor of indoleamine-2,3-dioxygenase-1 (IDO1) that suppresses systemic tryptophan catabolism and is currently being evaluated in ongoing clinical trials. We investigated the effects of epacadostat on (a) human dendritic cells (DCs) with respect to maturation and ability to activate human tumor antigen-specific cytotoxic T-cell (CTL) lines, and subsequent T-cell lysis of tumor cells, (b) human regulatory T cells (Tregs), and (c) human peripheral blood mononuclear cells (PBMCs) in vitro. Simultaneous treatment with epacadostat and IFN-γ plus lipopolysaccharide (LPS) did not change the phenotype of matured human DCs, and as expected decreased the tryptophan breakdown and kynurenine production. Peptide-specific T-cell lines stimulated with DCs pulsed with peptide produced significantly more IFN-γ, TNFα, GM-CSF and IL-8 if the DCs were treated with epacadostat. These T cells also displayed higher levels of tumor cell lysis on a per cell basis. Epacadostat also significantly decreased Treg proliferation induced by IDO production from IFN-γ plus LPS matured human DCs, although the Treg phenotype did not change. Multicolor flow cytometry was performed on human PBMCs treated with epacadostat; analysis of 123 discrete immune cell subsets revealed no changes in major immune cell types, an increase in activated CD83+ conventional DCs, and a decrease in immature activated Tim3+ NK cells. These studies show for the first time several effects of epacadostat on human DCs, and subsequent effects on CTL and Tregs, and provide a rationale as to how epacadostat could potentially increase the efficacy of immunotherapeutics, including cancer vaccines.
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Registered trials
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.