Singh, D. K., Kollipara, R. K., Vemireddy, V., Yang, X. L., Sun, Y., Regmi, N., Klingler, S., Hatanpaa, K. J., Raisanen, J., Cho, S. K., Sirasanagandla, S., Nannepaga, S., Piccirillo, S., Mashimo, T., Wang, S., Humphries, C. G., Mickey, B., Maher, E. A., Zheng, H., Kim, R. S., Kittler, R., Bachoo, R. M. (January 2017) Oncogenes Activate an Autonomous Transcriptional Regulatory Circuit That Drives Glioblastoma. Cell Rep, 18 (4). pp. 961-976. ISSN 2211-1247 (Electronic)
Abstract
Efforts to identify and target glioblastoma (GBM) drivers have primarily focused on receptor tyrosine kinases (RTKs). Clinical benefits, however, have been elusive. Here, we identify an SRY-related box 2 (SOX2) transcriptional regulatory network that is independent of upstream RTKs and capable of driving glioma-initiating cells. We identified oligodendrocyte lineage transcription factor 2 (OLIG2) and zinc-finger E-box binding homeobox 1 (ZEB1), which are frequently co-expressed irrespective of driver mutations, as potential SOX2 targets. In murine glioma models, we show that different combinations of tumor suppressor and oncogene mutations can activate Sox2, Olig2, and Zeb1 expression. We demonstrate that ectopic co-expression of the three transcription factors can transform tumor-suppressor-deficient astrocytes into glioma-initiating cells in the absence of an upstream RTK oncogene. Finally, we demonstrate that the transcriptional inhibitor mithramycin downregulates SOX2 and its target genes, resulting in markedly reduced proliferation of GBM cells in vivo.
| Item Type: | Paper |
|---|---|
| Uncontrolled Keywords: | astrocyte brain cancer glioblastoma oncogene stem cells targeted therapy transcription factor |
| Subjects: | organs, tissues, organelles, cell types and functions > cell types and functions > cell types > astrocytes organs, tissues, organelles, cell types and functions > cell types and functions > cell types > astrocytes organs, tissues, organelles, cell types and functions > cell types and functions > cell types > astrocytes diseases & disorders > cancer > cancer types > glioblastoma bioinformatics > genomics and proteomics > genetics & nucleic acid processing > DNA, RNA structure, function, modification > genes, structure and function > genes: types > oncogene |
| CSHL Authors: | |
| Communities: | CSHL labs > Zheng lab |
| Depositing User: | Matt Covey |
| Date: | 24 January 2017 |
| Date Deposited: | 10 Jan 2018 17:05 |
| Last Modified: | 10 Jan 2018 17:05 |
| PMCID: | PMC5321610 |
| Related URLs: | |
| URI: | https://repository.cshl.edu/id/eprint/35803 |
Actions (login required)
 |
Administrator's edit/view item |