Original Article | Published:

MINA controls proliferation and tumorigenesis of glioblastoma by epigenetically regulating cyclins and CDKs via H3K9me3 demethylation

Oncogene volume 36, pages 387396 (19 January 2017) | Download Citation

Abstract

It is generally known that histone demethylases regulate gene transcription by altering the methylate status on histones, but their roles in cancers and the underlying molecular mechanisms still remain unclear. MYC-induced nuclear antigen (MINA) is reported to be a histone demethylase and highly expressed in many cancers. Here, for the first time, we show that MINA is involved in glioblastoma carcinogenesis and reveal the probable mechanisms of it in cell-cycle control. Kaplan–Meier analysis of progression-free survival showed that high MINA expression was strongly correlated with poor outcome and advancing tumor stage. MINA knockdown significantly repressed the cell proliferation and tumorigenesis abilities of glioblastoma cells in vitro and in vivo that were rescued by overexpressing the full-length MINA afterwards. Microarray analysis after knockdown of MINA revealed that MINA probably regulated glioblastoma carcinogenesis through the predominant cell-cycle pathways. Further investigation showed that MINA deficiency led to a cell-cycle arrest in G1 and G2 phases. And among the downstream genes, we found that cyclins and cyclin-dependent kinases were directly activated by MINA via the demethylation of H3K9me3.

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Acknowledgements

This work was supported by the National Basic Research Program of China (No. 2012CB114603), the National Natural Science Foundation of China (No. 31501100, 81502574), the Research Fund for the Doctoral Program of Higher Education of China (20130182110003) and the Basal Research Fund of Central Higher Education Institutions (XDJK2016D003).

Author information

Affiliations

  1. State Key Laboratory of Silkworm Genome Biology, Southwest University, Chongqing, China

    • M-Y Huang
    • , F Xuan
    • , W Liu
    •  & H-J Cui

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Competing interests

The authors declare no conflict of interest.

Corresponding author

Correspondence to H-J Cui.

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DOI

https://doi.org/10.1038/onc.2016.208

Supplementary Information accompanies this paper on the Oncogene website (http://www.nature.com/onc)

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