Abstract
Cancer immunoediting drives the adaptation of tumor cells to host immune surveillance. Immunoediting driven by antigen (Ag)-specific T cells enriches NANOG expression in tumor cells, resulting in a stem-like phenotype and immune resistance. Here, we identify HDAC1 as a key mediator of the NANOG-associated phenotype. NANOG upregulated HDAC1 through promoter occupancy, thereby decreasing histone H3 acetylation on K14 and K27. NANOG-dependent, HDAC1-driven epigenetic silencing of cell-cycle inhibitors CDKN2D and CDKN1B induced stem-like features. Silencing of TRIM17 and NOXA induced immune and drug resistance in tumor cells by increasing antiapoptotic MCL1. Importantly, HDAC inhibition synergized with Ag-specific adoptive T-cell therapy to control immune refractory cancers. Our results reveal that NANOG influences the epigenetic state of tumor cells via HDAC1, and they encourage a rational application of epigenetic modulators and immunotherapy in treatment of NANOG+ refractory cancer types. Cancer Res; 77(18); 5039-53. ©2017 AACR.
©2017 American Association for Cancer Research.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Acetylation
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Animals
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Apoptosis
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Biomarkers, Tumor
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Breast Neoplasms / drug therapy
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Breast Neoplasms / immunology
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Breast Neoplasms / metabolism
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Breast Neoplasms / pathology*
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Cell Proliferation
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Combined Modality Therapy
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Drug Resistance, Multiple / drug effects
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Drug Resistance, Multiple / immunology*
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Drug Resistance, Neoplasm / drug effects
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Drug Resistance, Neoplasm / immunology
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Epigenesis, Genetic*
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Female
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Histone Deacetylase 1 / genetics
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Histone Deacetylase 1 / metabolism*
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Histones / metabolism
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Humans
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Mice
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Mice, Inbred NOD
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Mice, SCID
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Nanog Homeobox Protein / genetics
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Nanog Homeobox Protein / metabolism*
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Neoplasm Staging
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Neoplastic Stem Cells / drug effects
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Neoplastic Stem Cells / immunology
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Neoplastic Stem Cells / metabolism
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Neoplastic Stem Cells / pathology*
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Prognosis
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Transcriptional Activation
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Tumor Cells, Cultured
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Uterine Cervical Neoplasms / drug therapy
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Uterine Cervical Neoplasms / immunology
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Uterine Cervical Neoplasms / metabolism
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Uterine Cervical Neoplasms / pathology*
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Xenograft Model Antitumor Assays
Substances
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Biomarkers, Tumor
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Histones
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NANOG protein, human
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Nanog Homeobox Protein
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HDAC1 protein, human
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Histone Deacetylase 1