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Inhibition of DEPDC1A, a bad prognostic marker in multiple myeloma, delays growth and induces mature plasma cell markers in malignant plasma cells

High throughput DNA microarray has made it possible to outline genes whose expression in malignant plasma cells is associated with short overall survival of patients with Multiple Myeloma (MM). A further step is to elucidate the mechanisms encoded by these genes yielding to drug resistance and/or pa...

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Main Authors: Kassambara, Alboukadel (Author) , Schoenhals, Matthieu (Author) , Moreaux, Jérôme (Author) , Veyrune, Jean-Luc (Author) , Rème, Thierry (Author) , Goldschmidt, Hartmut (Author) , Hose, Dirk (Author) , Klein, Bernard (Author)
Format: Article (Journal)
Language:English
Published: April 30, 2013
In: PLOS ONE
Year: 2013, Volume: 8, Issue: 4, Pages: 1-13
ISSN:1932-6203
DOI:10.1371/journal.pone.0062752
Online Access:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1371/journal.pone.0062752
Verlag, lizenzpflichtig, Volltext: https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0062752
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Author Notes:Alboukadel Kassambara, Matthieu Schoenhals, Jérôme Moreaux, Jean-Luc Veyrune, Thierry Rème, Hartmut Goldschmidt, Dirk Hose, Bernard Klein
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Summary:High throughput DNA microarray has made it possible to outline genes whose expression in malignant plasma cells is associated with short overall survival of patients with Multiple Myeloma (MM). A further step is to elucidate the mechanisms encoded by these genes yielding to drug resistance and/or patients’ short survival. We focus here on the biological role of the DEP (for Disheveled, EGL-10, Pleckstrin) domain contained protein 1A (DEPDC1A), a poorly known protein encoded by DEPDC1A gene, whose high expression in malignant plasma cells is associated with short survival of patients. Using conditional lentiviral vector delivery of DEPDC1A shRNA, we report that DEPDC1A knockdown delayed the growth of human myeloma cell lines (HMCLs), with a block in G2 phase of the cell cycle, p53 phosphorylation and stabilization, and p21Cip1 accumulation. DEPDC1A knockdown also resulted in increased expression of mature plasma cell markers, including CXCR4, IL6-R and CD38. Thus DEPDC1A could contribute to the plasmablast features of MMCs found in some patients with adverse prognosis, blocking the differentiation of malignant plasma cells and promoting cell cycle.
Item Description:Gesehen am 30.04.2021
Physical Description:Online Resource
ISSN:1932-6203
DOI:10.1371/journal.pone.0062752

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