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Oncotarget. 2017 Jun 27;8(40):67287-67299. doi: 10.18632/oncotarget.18617. eCollection 2017 Sep 15.

MYSM1/2A-DUB is an epigenetic regulator in human melanoma and contributes to tumor cell growth.

Oncotarget

Christina Wilms, Carsten M Kroeger, Adelheid V Hainzl, Ishani Banik, Clara Bruno, Ioanna Krikki, Vida Farsam, Meinhard Wlaschek, Martina V Gatzka

Affiliations

  1. Department of Dermatology and Allergic Diseases, Ulm University, 89081 Ulm, Germany.
  2. ETH, 8092 Zurich, Switzerland.
  3. Department of Neurology, Ulm University, 89081 Ulm, Germany.

PMID: 28978033 PMCID: PMC5620173 DOI: 10.18632/oncotarget.18617

Abstract

Histone modifying enzymes, such as histone deacetylases (HDACs) and polycomb repressive complex (PRC) components, have been implicated in regulating tumor growth, epithelial-mesenchymal transition, tumor stem cell maintenance, or repression of tumor suppressor genes - and may be promising targets for combination therapies of melanoma and other cancers. According to recent findings, the histone H2A deubiquitinase 2A-DUB/Mysm1 interacts with the p53-axis in hematopoiesis and tissue differentiation in mice, in part by modulating DNA-damage responses in stem cell and progenitor compartments. Based on the identification of alterations in skin pigmentation and melanocyte specification in Mysm1-deficient mice, we hypothesized that MYSM1 may be involved in melanoma formation. In human melanoma samples, expression of MYSM1 was increased compared with normal skin melanocytes and nevi and co-localized with melanocyte markers such as Melan-A and c-KIT. Similarly, in melanoma cell lines A375 and SK-MEL-28 and in murine skin, expression of the deubiquitinase was detectable at the mRNA and protein level that was inducible by growth factor signals and UVB exposure, respectively. Upon stable silencing of

Keywords: UV-radiation; epigenetics; melanoma; pigmentation; transcriptional regulation

Conflict of interest statement

CONFLICTS OF INTEREST The authors declare no potential conflicts of interest.

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