Abstract
Histone acetylation, including acetylated H3K14 (H3K14ac), is generally linked to gene activation. Monomethylated histone H3 lysine 4 (H3K4me1), together with other gene-activating marks, denotes active genes. In contrast to usual gene-activating functions of H3K14ac and H3K4me1, we here show that the dual histone modification mark H3K4me1-H3K14ac is recognized by ZMYND8 (also called RACK7) and can function to counteract gene expression. We identified ZMYND8 as a transcriptional corepressor of the H3K4 demethylase JARID1D. ZMYND8 antagonized the expression of metastasis-linked genes, and its knockdown increased the cellular invasiveness in vitro and in vivo. The plant homeodomain (PHD) and Bromodomain cassette in ZMYND8 mediated the combinatorial recognition of H3K4me1-H3K14ac and H3K4me0-H3K14ac by ZMYND8. These findings uncover an unexpected role for the signature H3K4me1-H3K14ac in attenuating gene expression and reveal a metastasis-suppressive epigenetic mechanism in which ZMYND8's PHD-Bromo cassette couples H3K4me1-H3K14ac with downregulation of metastasis-linked genes.
Copyright © 2016 Elsevier Inc. All rights reserved.
Publication types
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Research Support, N.I.H., Extramural
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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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Binding Sites
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Cell Line, Tumor
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Cell Movement*
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Cell Proliferation
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DNA Methylation*
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Down-Regulation
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Gene Expression Regulation, Neoplastic*
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Histone Demethylases / genetics
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Histone Demethylases / metabolism
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Histones / genetics
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Histones / metabolism*
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Humans
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Lung Neoplasms / genetics
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Lung Neoplasms / metabolism*
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Lung Neoplasms / secondary
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Male
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Mice, Nude
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Minor Histocompatibility Antigens / genetics
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Minor Histocompatibility Antigens / metabolism
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Models, Molecular
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Neoplasm Invasiveness
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Prostatic Neoplasms / genetics
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Prostatic Neoplasms / metabolism*
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Prostatic Neoplasms / pathology
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Protein Binding
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Protein Conformation
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Protein Interaction Domains and Motifs
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RNA Interference
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Receptors for Activated C Kinase
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Receptors, Cell Surface / genetics
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Receptors, Cell Surface / metabolism*
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Time Factors
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Transcription, Genetic
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Transfection
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Tumor Burden
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Tumor Suppressor Proteins
Substances
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Histones
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Minor Histocompatibility Antigens
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Receptors for Activated C Kinase
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Receptors, Cell Surface
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Tumor Suppressor Proteins
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ZMYND8 protein, human
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Histone Demethylases
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KDM5D protein, human