Selenium-binding protein 1 is down-regulated in malignant melanoma

Schott M, de Jel MM, Engelmann JC, Renner P, Geissler EK, Boßerhoff AK, Kuphal S (2018)

Publication Type: Journal article

Publication year: 2018

Journal

Oncotarget Impact Journals

Book Volume: 9

Pages Range: 10445-10456

Journal Issue: 12

DOI: 10.18632/oncotarget.23853

Abstract

Selenium-binding protein 1 (SELENBP1) expression is reduced in various epithelial cancer entities compared to corresponding normal tissue and has already been described as a tumor suppressor involved in the regulation of cell proliferation, senescence, migration and apoptosis. We identified SELENBP1 to be down-regulated in cutaneous melanoma, a malignant cancer of pigment-producing melanocytes in the skin, which leads to the assumption that SELENBP1 also functions as tumor suppressor in the skin, as shown by others e.g. for prostate or lung carcinoma. However, in vitro analyses indicate that SELENBP1 re-expression in human melanoma cell lines has no impact on cell proliferation, migration or tube formation of the tumor cells themselves when compared to control-transfected cells. Interestingly, supernatant taken from melanoma cell lines transfected with a SELENBP1 re-expression plasmid led to suppression of vessel formation of HMEC cells. Furthermore, SELENBP1 re-expression alters the sensitivity of melanoma cells for Vemurafenib treatment. The data also hint to a functional interaction of SELENBP1 with GPX1 (Glutathione peroxidase 1). Low SELENBP1 mRNA levels correlate inversely with GPX1 expression in melanoma. The re-expression of SELENBP1 combined with down-regulation of GPX1 expression led to reduction of the proliferation of melanoma cells. In summary, SELENBP1 influences the tumor microenvironment and SELENBP1 action is functionally influenced by GPX1.

Authors with CRIS profile

Mandy Schott Lehrstuhl für Biochemie und Molekulare Medizin Miriam Martha de Jel Lehrstuhl für Biochemie und Molekulare Medizin Anja Katrin Boßerhoff Lehrstuhl für Biochemie und Molekulare Medizin Silke Kuphal Lehrstuhl für Biochemie und Molekulare Medizin

Involved external institutions

UCL Institute of Neurology GB United Kingdom (GB) Universitätsklinikum Regensburg DE Germany (DE)

How to cite

APA:

Schott, M., de Jel, M.M., Engelmann, J.C., Renner, P., Geissler, E.K., Boßerhoff, A.K., & Kuphal, S. (2018). Selenium-binding protein 1 is down-regulated in malignant melanoma. Oncotarget, 9(12), 10445-10456. https://dx.doi.org/10.18632/oncotarget.23853

MLA:

Schott, Mandy, et al. "Selenium-binding protein 1 is down-regulated in malignant melanoma." Oncotarget 9.12 (2018): 10445-10456.

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