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Maleszewska M, Wojnicki K, Mieczkowski J, Król SK, Jacek K, Śmiech M, Kocyk M, Ciechomska IA, Bujko M, Siedlecki J, Kotulska K, Grajkowska W, Zawadzka M, Kaminska B. DMRTA2 supports glioma stem-cell mediated neovascularization in glioblastoma. Cell Death Dis 2024; 15:228. [PMID: 38509074 PMCID: PMC10954651 DOI: 10.1038/s41419-024-06603-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Revised: 03/06/2024] [Accepted: 03/08/2024] [Indexed: 03/22/2024]
Abstract
Glioblastoma (GBM) is the most common and lethal brain tumor in adults. Due to its fast proliferation, diffusive growth and therapy resistance survival times are less than two years for patients with IDH-wildtype GBM. GBM is noted for the considerable cellular heterogeneity, high stemness indices and abundance of the glioma stem-like cells known to support tumor progression, therapeutic resistance and recurrence. Doublesex- and mab-3-related transcription factor a2 (DMRTA2) is involved in maintaining neural progenitor cells (NPC) in the cell cycle and its overexpression suppresses NPC differentiation. Despite the reports showing that primary GBM originates from transformed neural stem/progenitors cells, the role of DMRTA2 in gliomagenesis has not been elucidated so far. Here we show the upregulation of DMRTA2 expression in malignant gliomas. Immunohistochemical staining showed the protein concentrated in small cells with high proliferative potential and cells localized around blood vessels, where it colocalizes with pericyte-specific markers. Knock-down of DMRTA2 in human glioma cells impairs proliferation but not viability of the cells, and affects the formation of the tumor spheres, as evidenced by strong decrease in the number and size of spheres in in vitro cultures. Moreover, the knockdown of DMRTA2 in glioma spheres affects the stabilization of the glioma stem-like cell-dependent tube formation in an in vitro angiogenesis assay. We conclude that DMRTA2 is a new player in gliomagenesis and tumor neovascularization and due to its high expression in malignant gliomas could be a biomarker and potential target for new therapeutic strategies in glioblastoma.
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Affiliation(s)
- Marta Maleszewska
- Laboratory of Molecular Neurobiology, Nencki Institute of Experimental Biology, Polish Academy of Sciences, Warsaw, Poland.
- Department of Animal Physiology, Institute of Functional Biology and Ecology, Faculty of Biology, University of Warsaw, Warsaw, Poland.
| | - Kamil Wojnicki
- Laboratory of Molecular Neurobiology, Nencki Institute of Experimental Biology, Polish Academy of Sciences, Warsaw, Poland
| | - Jakub Mieczkowski
- Laboratory of Molecular Neurobiology, Nencki Institute of Experimental Biology, Polish Academy of Sciences, Warsaw, Poland
- 3P-Medicine Laboratory, Medical University of Gdansk, Gdansk, Poland
| | - Sylwia K Król
- Laboratory of Molecular Neurobiology, Nencki Institute of Experimental Biology, Polish Academy of Sciences, Warsaw, Poland
| | - Karol Jacek
- Laboratory of Molecular Neurobiology, Nencki Institute of Experimental Biology, Polish Academy of Sciences, Warsaw, Poland
| | - Magdalena Śmiech
- Laboratory of Molecular Neurobiology, Nencki Institute of Experimental Biology, Polish Academy of Sciences, Warsaw, Poland
| | - Marta Kocyk
- Laboratory of Molecular Neurobiology, Nencki Institute of Experimental Biology, Polish Academy of Sciences, Warsaw, Poland
| | - Iwona A Ciechomska
- Laboratory of Molecular Neurobiology, Nencki Institute of Experimental Biology, Polish Academy of Sciences, Warsaw, Poland
| | - Mateusz Bujko
- Department of Molecular and Translational Oncology, Maria Sklodowska-Curie National Research Institute of Oncology, Warsaw, Poland
| | - Janusz Siedlecki
- Department of Molecular and Translational Oncology, Maria Sklodowska-Curie National Research Institute of Oncology, Warsaw, Poland
| | - Katarzyna Kotulska
- Department of Pathology, The Children's Memorial Health Institute, Warsaw, Poland
| | - Wiesława Grajkowska
- Department of Pathology, The Children's Memorial Health Institute, Warsaw, Poland
| | - Małgorzata Zawadzka
- Laboratory of Neuromuscular Plasticity, Nencki Institute of Experimental Biology, Warsaw, Poland
| | - Bozena Kaminska
- Laboratory of Molecular Neurobiology, Nencki Institute of Experimental Biology, Polish Academy of Sciences, Warsaw, Poland
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Kijewska M, Kocyk M, Kloss M, Stepniak K, Korwek Z, Polakowska R, Dabrowski M, Gieryng A, Wojtas B, Ciechomska IA, Kaminska B. The embryonic type of SPP1 transcriptional regulation is re-activated in glioblastoma. Oncotarget 2017; 8:16340-16355. [PMID: 28030801 PMCID: PMC5369967 DOI: 10.18632/oncotarget.14092] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2016] [Accepted: 12/16/2016] [Indexed: 11/25/2022] Open
Abstract
Osteopontin (SPP1, a secreted phosphoprotein 1) is primarily involved in immune responses, tissue remodelling and biomineralization. However, it is also overexpressed in many cancers and regulates tumour progression by increasing migration, invasion and cancer stem cell self-renewal. Mechanisms of SPP1 overexpression in gliomas are poorly understood. We demonstrate overexpression of two out of five SPP1 isoforms in glioblastoma (GBM) and differential isoform expression in glioma cell lines. Up-regulated SPP1 expression is associated with binding of the GLI1 transcription factor to the promoter and OCT4 (octamer-binding transcription factor 4) to the first SPP1 intron of the SPP1 gene in human glioma cells but not in non-transformed astrocytes. GLI1 knockdown reduced SPP1 mRNA and protein levels in glioma cells. GLI1 and OCT4 are known regulators of stem cell pluripotency. GBMs contain rare cells that express stem cell markers and display ability to self-renew. We reveal that SPP1 is overexpressed in glioma initiating cells defined by high rhodamine 123 efflux, sphere forming capacity and stemness marker expression. Forced differentiation of human glioma spheres reduced SPP1 expression. Knockdown of SPP1, GLI1 or CD44 with siRNAs diminished sphere formation. C6 glioma cells stably depleted of Spp1 displayed reduced sphere forming capacity and downregulated stemness marker expression. Overexpression of the wild type Spp1, but not Spp1 lacking a Cd44 binding domain, rescued cell ability to form spheres. Our findings show re-activation of the embryonic-type transcriptional regulation of SPP1 in malignant gliomas and point to the importance of SPP1-CD44 interactions in self-renewal and pluripotency glioma initiating cells.
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Affiliation(s)
- Magdalena Kijewska
- Laboratory of Molecular Neurobiology, The Nencki Institute of Experimental Biology of the Polish Academy of Sciences, Warsaw, Poland
| | - Marta Kocyk
- Laboratory of Molecular Neurobiology, The Nencki Institute of Experimental Biology of the Polish Academy of Sciences, Warsaw, Poland
| | - Michal Kloss
- Laboratory of Molecular Neurobiology, The Nencki Institute of Experimental Biology of the Polish Academy of Sciences, Warsaw, Poland
| | - Karolina Stepniak
- Laboratory of Molecular Neurobiology, The Nencki Institute of Experimental Biology of the Polish Academy of Sciences, Warsaw, Poland
| | - Zbigniew Korwek
- Laboratory of Molecular Bases of Aging, The Nencki Institute of Experimental Biology of Polish Academy of Sciences, Warsaw, Poland
| | | | - Michal Dabrowski
- Laboratory of Molecular Neurobiology, The Nencki Institute of Experimental Biology of the Polish Academy of Sciences, Warsaw, Poland
| | - Anna Gieryng
- Laboratory of Molecular Neurobiology, The Nencki Institute of Experimental Biology of the Polish Academy of Sciences, Warsaw, Poland
| | - Bartosz Wojtas
- Laboratory of Molecular Neurobiology, The Nencki Institute of Experimental Biology of the Polish Academy of Sciences, Warsaw, Poland
| | - Iwona A Ciechomska
- Laboratory of Molecular Neurobiology, The Nencki Institute of Experimental Biology of the Polish Academy of Sciences, Warsaw, Poland
| | - Bozena Kaminska
- Laboratory of Molecular Neurobiology, The Nencki Institute of Experimental Biology of the Polish Academy of Sciences, Warsaw, Poland
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