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  3. Identification of a novel histone H2A mono-ubiquitination-inhibiting cell-active small molecule

Identification of a novel histone H2A mono-ubiquitination-inhibiting cell-active small molecule

  • Bioorg Med Chem Lett. 2024 Jun 1:105:129759. doi: 10.1016/j.bmcl.2024.129759.
Siyao Ni 1,  Yuri Takada 1,  Takaaki Ando 1,  Shengwang Yu 1,  Yasunobu Yamashita 1,  Yukari Takahashi 2,  Miho Sawada 1,  Makoto Oba 2,  Yukihiro Itoh 3,  Takayoshi Suzuki 4
Affiliations

Affiliations

  • 1 SANKEN, Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan.
  • 2 Department of Chemistry, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, 1-5 Shimogamohangi-cho, Sakyo-ku, Kyoto 606-0823, Japan.
  • 3 SANKEN, Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan. Electronic address: itohy@sanken.osaka-u.ac.jp.
  • 4 SANKEN, Osaka University, 8-1 Mihogaoka, Ibaraki, Osaka 567-0047, Japan. Electronic address: tkyssuzuki@sanken.osaka-u.ac.jp.
PMID: 38636717 DOI: 10.1016/j.bmcl.2024.129759
Abstract

Histone H2A mono-ubiquitination plays important roles in epigenetic gene expression and is also involved in tumorigenesis. Small molecules controlling H2A ubiquitination are of interest as potential chemical tools and Anticancer drugs. To identify novel small molecule inhibitors of H2A ubiquitination, we synthesized and evaluated several compounds designed based on PRT4165 (1), which is a reported histone ubiquitin Ligase RING1A inhibitor. We found that compound 11b strongly inhibited the viability and reduced histone H2A mono-ubiquitination in human osteosarcoma U2OS cells. Therefore, compound 11b is a promising lead compound for the development of H2A histone ubiquitination-inhibiting small molecules.

Keywords

Epigenetics; Histone modification; PRC1; RING1A/B.

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