TY - JOUR
T1 - Histone H3.3 sub-variant H3mm7 is required for normal skeletal muscle regeneration
AU - Harada, Akihito
AU - Maehara, Kazumitsu
AU - Ono, Yusuke
AU - Taguchi, Hiroyuki
AU - Yoshioka, Kiyoshi
AU - Kitajima, Yasuo
AU - Xie, Yan
AU - Sato, Yuko
AU - Iwasaki, Takeshi
AU - Nogami, Jumpei
AU - Okada, Seiji
AU - Komatsu, Tetsuro
AU - Semba, Yuichiro
AU - Takemoto, Tatsuya
AU - Kimura, Hiroshi
AU - Kurumizaka, Hitoshi
AU - Ohkawa, Yasuyuki
N1 - Funding Information:
We thank the Advanced Computational Scientific Program of the Research Institute for Information Technology, Kyushu University and the National Institute of Genetics (NIG) for providing high-performance computing resources. We also thank the Joint Usage and Joint Research Programs, the Institute of Advanced Medical Sciences, Tokushima University and beamline scientists at the Photon Factory for their assistance with data collection from the SPring-8 BL41XU beamline and the BL-1A, BL-5A, and BL-17A beamlines. The synchrotron radiation experiments were performed with approval of the Japan Synchrotron Radiation Research Institute (JASRI) (Proposal 2013A1036 and 2014A1042) and the Photon Factory Program Advisory Committee (Proposal 2012G569, and 2014G556). This work was supported by JST CREST [JPMJCR16G1]; MEXT/JSPS KAKENHI [JP25116010, JP25132709, JP25118518, JP26290064, JP17H03608, and JP17K19356 to Y.O.; JP16H01219 and JP15K18457 to A.H.; JP16K18479, JP16H01577, and JP16H01550 to K.M.; JP25116002 and JP17H01408 to H.Ku.; and JP25116005 to H.Ki.] and is also partially supported by the Platform Project for Supporting Drug Discovery and Life Science Research [to H.Ku.] and the Practical Research Project for Allergic Diseases and Immunology (Research on Allergic Diseases and Immunology) [JP17ek0410044 to Y.Oh.] from the Japan Agency for Medical Research and Development (AMED). H.Ku. was also supported by the Waseda Research Institute for Science and Engineering and by programs of Waseda University. H.T. was supported by a Research Fellowship of the Japan Society for the Promotion of Science for Young Scientists.
Publisher Copyright:
© 2018 The Author(s).
PY - 2018/12/1
Y1 - 2018/12/1
N2 - Regulation of gene expression requires selective incorporation of histone H3 variant H3.3 into chromatin. Histone H3.3 has several subsidiary variants but their functions are unclear. Here we characterize the function of histone H3.3 sub-variant, H3mm7, which is expressed in skeletal muscle satellite cells. H3mm7 knockout mice demonstrate an essential role of H3mm7 in skeletal muscle regeneration. Chromatin analysis reveals that H3mm7 facilitates transcription by forming an open chromatin structure around promoter regions including those of myogenic genes. The crystal structure of the nucleosome containing H3mm7 reveals that, unlike the S57 residue of other H3 proteins, the H3mm7-specific A57 residue cannot form a hydrogen bond with the R40 residue of the cognate H4 molecule. Consequently, the H3mm7 nucleosome is unstable in vitro and exhibited higher mobility in vivo compared with the H3.3 nucleosome. We conclude that the unstable H3mm7 nucleosome may be required for proper skeletal muscle differentiation.
AB - Regulation of gene expression requires selective incorporation of histone H3 variant H3.3 into chromatin. Histone H3.3 has several subsidiary variants but their functions are unclear. Here we characterize the function of histone H3.3 sub-variant, H3mm7, which is expressed in skeletal muscle satellite cells. H3mm7 knockout mice demonstrate an essential role of H3mm7 in skeletal muscle regeneration. Chromatin analysis reveals that H3mm7 facilitates transcription by forming an open chromatin structure around promoter regions including those of myogenic genes. The crystal structure of the nucleosome containing H3mm7 reveals that, unlike the S57 residue of other H3 proteins, the H3mm7-specific A57 residue cannot form a hydrogen bond with the R40 residue of the cognate H4 molecule. Consequently, the H3mm7 nucleosome is unstable in vitro and exhibited higher mobility in vivo compared with the H3.3 nucleosome. We conclude that the unstable H3mm7 nucleosome may be required for proper skeletal muscle differentiation.
UR - http://www.scopus.com/inward/record.url?scp=85045261155&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85045261155&partnerID=8YFLogxK
U2 - 10.1038/s41467-018-03845-1
DO - 10.1038/s41467-018-03845-1
M3 - Article
C2 - 29643389
AN - SCOPUS:85045261155
SN - 2041-1723
VL - 9
JO - Nature Communications
JF - Nature Communications
IS - 1
M1 - 1400
ER -