Cancer-associated mutations of histones H2B, H3.1 and H2A.Z.1 affect the structure and stability of the nucleosome

• Arimura, Yasuhiro

  Laboratory of Chromatin Structure and Function, Institute for Quantitative Biosciences, The University of Tokyo･Laboratory of Structural Biology, Graduate School of Advanced Science and Engineering, Waseda University

• Ikura, Masae

  Laboratory of Chromatin Regulatory Network, Department of Genome Biology, Radiation Biology Center, Graduate School of Biostudies, Kyoto University

• Fujita, Risa

  Laboratory of Chromatin Structure and Function, Institute for Quantitative Biosciences, The University of Tokyo･Laboratory of Structural Biology, Graduate School of Advanced Science and Engineering, Waseda University

• Noda, Mamiko

  Laboratory of Structural Biology, Graduate School of Advanced Science and Engineering, Waseda University

• Kobayashi, Wataru

  Laboratory of Chromatin Structure and Function, Institute for Quantitative Biosciences, The University of Tokyo･Laboratory of Structural Biology, Graduate School of Advanced Science and Engineering, Waseda University

• Horikoshi, Naoki

  Laboratory of Structural Biology, Graduate School of Advanced Science and Engineering, Waseda University

• Sun, Jiying

  Department of Cellular Biology, Research Institute for Radiation Biology and Medicine, Hiroshima University

• Shi, Lin

  Department of Cellular Biology, Research Institute for Radiation Biology and Medicine, Hiroshima University

• Kusakabe, Masayuki

  Laboratory of Molecular Biology, Graduate School of Agricultural Science, Tohoku University

• Harata, Masahiko

  Laboratory of Molecular Biology, Graduate School of Agricultural Science, Tohoku University

• Ohkawa, Yasuyuki

  Division of Transcriptomics, Medical Institute of Bioregulation, Kyushu University

• Tashiro, Satoshi

  Department of Cellular Biology, Research Institute for Radiation Biology and Medicine, Hiroshima University

• Kimura, Hiroshi

  Cell Biology Center, Institute of Innovative Research, Tokyo Institute of Technology

• Ikura, Tsuyoshi

  Laboratory of Chromatin Regulatory Network, Department of Genome Biology, Radiation Biology Center, Graduate School of Biostudies, Kyoto University

• Kurumizaka, Hitoshi

  Laboratory of Chromatin Structure and Function, Institute for Quantitative Biosciences, The University of Tokyo･Laboratory of Structural Biology, Graduate School of Advanced Science and Engineering, Waseda University

Abstract

Mutations of the Glu76 residue of canonical histone H2B are frequently found in cancer cells. However, it is quite mysterious how a single amino acid substitution in one of the multiple H2B genes affects cell fate. Here we found that the H2B E76K mutation, in which Glu76 is replaced by Lys (E76K), distorted the interface between H2B and H4 in the nucleosome, as revealed by the crystal structure and induced nucleosome instability in vivo and in vitro. Exogenous production of the H2B E76K mutant robustly enhanced the colony formation ability of the expressing cells, indicating that the H2B E76K mutant has the potential to promote oncogenic transformation in the presence of wild-type H2B. We found that other cancer-associated mutations of histones, H3.1 E97K and H2A.Z.1 R80C, also induced nucleosome instability. Interestingly, like the H2B E76K mutant, the H3.1 E97K mutant was minimally incorporated into chromatin in cells, but it enhanced the colony formation ability. In contrast, the H2A.Z.1 R80C mutant was incorporated into chromatin in cells, and had minor effects on the colony formation ability of the cells. These characteristics of histones with cancer-associated mutations may provide important information toward understanding how the mutations promote cancer progression.

Journal

• Nucleic acids research

  Nucleic acids research 46 (19), 10007-10018, 2018-11-02

  Oxford University Press (OUP)

Keywords

• Gene Regulation
• Chromatin and Epigenetics

Details

• CRID: 1050282813185819520
• NII Article ID: 120006545208
• ISSN: 03051048
• ISSN: 13624962
• DOI: 10.1093/nar/gky661
• HANDLE: 2433/235734
• Web Site: http://academic.oup.com/nar/advance-article-pdf/doi/10.1093/nar/gky661/25204962/gky661.pdf
• Text Lang: en
• Article Type: journal article
• Data Source:
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