Therapeutic potential of GSK-J4, a histone demethylase KDM6B/JMJD3 inhibitor, for acute myeloid leukemia

Yunan Li, Mingying Zhang, Mengyao Sheng, Peng Zhang, Zizhen Chen, Wen Xing, Jie Bai, Tao Cheng, Feng Chun Yang, Yuan Zhou

Research output: Contribution to journalArticle

15 Scopus citations

Abstract

Purpose: Acute myeloid leukemia (AML) is a heterogeneous disease with poor outcomes. Despite increased evidence shows that dysregulation of histone modification contributes to AML, specific drugs targeting key histone modulators are not applied in the clinical treatment of AML. Here, we investigated whether targeting KDM6B, the demethylase of tri-methylated histone H3 lysine 27 (H3K27me3), has a therapeutic potential for AML. Methods: A KDM6B-specific inhibitor, GSK-J4, was applied to treat the primary cells from AML patients and AML cell lines in vitro and in vivo. RNA-sequencing was performed to reveal the underlying mechanisms of inhibiting KDM6B for the treatment of AML. Results: Here we observed that the mRNA expression of KDM6B was up-regulated in AML and positively correlated with poor survival. Treatment with GSK-J4 increased the global level of H3K27me3 and reduced the proliferation and colony-forming ability of primary AML cells and AML cell lines. GSK-J4 treatment significantly induced cell apoptosis and cell-cycle arrest in Kasumi-1 cells, and displayed a synergistic effect with cytosine arabinoside. Notably, injection of GSK-J4 attenuated the disease progression in a human AML xenograft mouse model in vivo. Treatment with GSK-J4 predominantly resulted in down-regulation of DNA replication and cell-cycle-related pathways, as well as abrogated the expression of critical cancer-promoting HOX genes. ChIP-qPCR validated an increased enrichment of H3K27me3 in the transcription start sites of these HOX genes. Conclusions: In summary, our findings suggest that targeting KDM6B with GSK-J4 has a therapeutic potential for the treatment of AML.

Original languageEnglish (US)
Pages (from-to)1065-1077
Number of pages13
JournalJournal of cancer research and clinical oncology
Volume144
Issue number6
DOIs
StatePublished - Jun 1 2018

Keywords

  • Acute myeloid leukemia
  • Histone demethylase
  • KDM6B
  • Small molecule inhibitor

ASJC Scopus subject areas

  • Oncology
  • Cancer Research

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