Cited by 29Immune cells in cancerImmunotherapy and Immune ResponsesCancer Immunotherapy and Biomarkers

HDACi delivery reprograms tumor-infiltrating myeloid cells to eliminate antigen-loss variants

Open access
Nguyen, Andrew, Ho, Louisa, Workenhe, Samuel T., Chen, Lan, Samson, Jonathan, Walsh, Scott R., Pol, Jonathan, Bramson, Jonathan L. +1 more·2018·Cell Reports

Abstract

Immune recognition of tumor-expressed antigens by cytotoxic CD8 + T cells is the foundation of adoptive T cell therapy (ACT) and has been shown to elicit significant tumor regression. However, therapy-induced selective pressure can sculpt the antigenicity of tumors, resulting in outgrowth of variants that lose the target antigen. We demonstrate that tumor relapse from ACT and subsequent oncolytic viral vaccination can be prevented using class I HDACi, MS-275. Drug delivery subverted the phenotype of tumor-infiltrating CD11b + Ly6C hi Ly6G – myeloid cells, favoring NOS2/ROS secretion and pro-inflammatory genes characteristic of M1 polarization. Simultaneously, MS-275 abrogated the immunosuppressive function of tumor-infiltrating myeloid cells and reprogrammed them to eliminate antigen-negative tumor cells in a caspase-dependent manner. Elevated IFN-γ within the tumor microenvironment suggests that MS-275 modulates the local cytokine landscape to favor antitumor myeloid polarization through the IFN-γR/STAT1 signaling axis. Exploiting tumor-infiltrating myeloid cell plasticity thus complements T cell therapy in targeting tumor heterogeneity and immune escape.

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Crossref · 10.1016/j.celrep.2018.06.040

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  • Simply abrogating class I HDAC activity without interference with other epigenetic regulators is sufficient to influence expression of cytokines, chemokines, and other inflammatory signals that remodel immune cell activities.

    “Simply abrogating class I HDAC activity without any interference with other epigenetic regulators is sufficient to influence the expression of cytokines, chemokines, and other inflammatory signals that remodel immune cells activities (Hicks et al., 2020;Hicks et al., 2021;Nguyen et al., 2018).”

    From HDACs and the epigenetic plasticity of cancer cells: target the complexity (2022) · cites this paper as Nguyen et al., 2018

  • In the presence of entinostat, increased IFN-γ levels in the tumor microenvironment modulate the local cytokine landscape and promote antitumor myeloid polarization.

    “In the presence of entinostat, increased IFN-γ levels in the tumor microenvironment modulate the local cytokine landscape and promote antitumor myeloid polarization (Nguyen et al., 2018).”

    From HDACs and the epigenetic plasticity of cancer cells: target the complexity (2022) · cites this paper as Nguyen et al., 2018

  • Entinostat can suppress the immunosuppressive effect of tumor-infiltrating myeloid cells and reprogram them to eliminate antigen-negative tumor cells.

    “Entinostat can suppress the immunosuppressive effect of tumorinfiltrating myeloid cells and reprogram them to eliminate antigennegative tumor cells.”

    From HDACs and the epigenetic plasticity of cancer cells: target the complexity (2022) · cites this paper as Nguyen et al., 2018

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Authors
Nguyen, A., Ho, L., Workenhe, S. T., Chen, L., Samson, J., Walsh, S. R., Pol, J., Bramson, J. L., & Wan, Y.
Affiliations
McMaster University (CA)
Corresponding author
Wan, Yonghong
Venue
Cell Reports
Publisher
Elsevier BV
Published
2018-07
Volume
24
Issue
3
Pages
642-654
ISSN
2211-1247 (ISSN-L)
OpenAlex
W2884280196
Cited by
29
References
67
Citations by year
2026: 3 · 2025: 2 · 2024: 6 · 2023: 3 · 2022: 4 · 2021: 7 · 2020: 3 · 2019: 1
FWCI
1.18
Type
journal article
Language
en
Open access
Locations
  • Cell Reports (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
  • Ontario Institute for Cancer Research
  • Canadian Institutes of Health Research (CIHR (FRN 123516, FRN 152954)
  • Canadian Cancer Society (705143)
Topics
  • Life Sciences › Immunology and Microbiology › Immunology › Immune cells in cancer
  • Life Sciences › Immunology and Microbiology › Immunology › Immunotherapy and Immune Responses
  • Health Sciences › Medicine › Oncology › Cancer Immunotherapy and Biomarkers
Keywords
histone deacetylase inhibitors, entinostat, tumor-infiltrating myeloid cells, adoptive T cell therapy, tumor antigen loss, tumor heterogeneity, tumor recurrence, M1 macrophage polarization, caspase-dependent cell death, interferon-gamma, STAT1 signaling, tumor microenvironment, immune evasion
MeSH terms
Interferon gamma Receptor, Animals, Antigens, Neoplasm, Antineoplastic Agents, Benzamides, Female, Immunity, Inflammation, Interferon-gamma, Melanoma, Experimental, Mice, Inbred C57BL, Phenotype, Pyridines, Signal Transduction, Immunotherapy, Adoptive, Cell Polarity, Receptors, Interferon, CD8-Positive T-Lymphocytes, Myeloid Cells, Histone Deacetylase Inhibitors, Gene Ontology, Cellular Reprogramming

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