KDM8, a H3K36me2 histone demethylase that acts in the cyclin A1 coding region to regulate cancer cell proliferation

Datsun A. Hsia, Clifford G. Tepper, Mamata R. Pochampalli, Elaine Y.C. Hsia, Chie Izumiya, Steve B. Huerta, Michael E. Wright, Hong Wu Chen, Hsing Jien Kung, Yoshihiro Izumiya

Research output: Contribution to journalArticle

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Abstract

Localized chromatin modifications of histone tails play an important role in regulating gene transcription, and aberration of these processes leads to carcinogenesis. Methylated histone lysine residues, a key player in chromatin remodeling, are demethylated by the JmjC class of enzymes. Here weshow that JMJD5 (now renamed KDM8), a JmjC family member, demethylates H3K36me2 and is required for cell cycle progression. Chromatin immunoprecipitation assays applied to human genome tiling arrays in conjunction with RNA microarray revealed that KDM8 occupies the coding region of cyclin A1 and directly regulates transcription. Mechanistic analyses showed that KDM8 functioned as a transcriptional activator by inhibiting HDAC recruitment via demethylation of H3K36me2, an epigenetic repressive mark. Tumor array experiments revealed KDM8 is overexpressed in several types of cancer. In addition, loss-of-function studies in MCF7 cells leads to cell cycle arrest. These studies identified KDM8 as an important cell cycle regulator.

Original languageEnglish
Pages (from-to)9671-9676
Number of pages6
JournalProceedings of the National Academy of Sciences of the United States of America
Volume107
Issue number21
DOIs
Publication statusPublished - May 25 2010
Externally publishedYes

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Cyclin A1
Histone Demethylases
Cell Cycle
Histone Code
Cell Proliferation
Chromatin Assembly and Disassembly
Chromatin Immunoprecipitation
MCF-7 Cells
Human Genome
Cell Cycle Checkpoints
Epigenomics
Histones
Lysine
Chromatin
Neoplasms
Carcinogenesis
RNA
Enzymes
Genes

Keywords

  • Breast cancer
  • Cell cycle
  • Epigenetics
  • JmjC
  • Transcription

ASJC Scopus subject areas

  • General

Cite this

KDM8, a H3K36me2 histone demethylase that acts in the cyclin A1 coding region to regulate cancer cell proliferation. / Hsia, Datsun A.; Tepper, Clifford G.; Pochampalli, Mamata R.; Hsia, Elaine Y.C.; Izumiya, Chie; Huerta, Steve B.; Wright, Michael E.; Chen, Hong Wu; Kung, Hsing Jien; Izumiya, Yoshihiro.

In: Proceedings of the National Academy of Sciences of the United States of America, Vol. 107, No. 21, 25.05.2010, p. 9671-9676.

Research output: Contribution to journalArticle

Hsia, Datsun A. ; Tepper, Clifford G. ; Pochampalli, Mamata R. ; Hsia, Elaine Y.C. ; Izumiya, Chie ; Huerta, Steve B. ; Wright, Michael E. ; Chen, Hong Wu ; Kung, Hsing Jien ; Izumiya, Yoshihiro. / KDM8, a H3K36me2 histone demethylase that acts in the cyclin A1 coding region to regulate cancer cell proliferation. In: Proceedings of the National Academy of Sciences of the United States of America. 2010 ; Vol. 107, No. 21. pp. 9671-9676.
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