PMID- 33077835 OWN - NLM STAT- MEDLINE DCOM- 20201211 LR - 20220421 IS - 1476-5594 (Electronic) IS - 0950-9232 (Linking) VI - 39 IP - 46 DP - 2020 Nov TI - Tenascin C promotes cancer cell plasticity in mesenchymal glioblastoma. PG - 6990-7004 LID - 10.1038/s41388-020-01506-6 [doi] AB - Interconversion of transformed non-stem cells to cancer stem cells, termed cancer cell plasticity, contributes to intra-tumor heterogeneity and its molecular mechanisms are currently unknown. Here, we have identified Tenascin C (TNC) to be upregulated and secreted in mesenchymal glioblastoma (MES GBM) subtype with high NF-kappaB signaling activity. Silencing TNC decreases proliferation, migration and suppresses self-renewal of glioma stem cells. Loss of TNC in MES GBM compromises de-differentiation of transformed astrocytes and blocks the ability of glioma stem cells to differentiate into tumor derived endothelial cells (TDEC). Inhibition of NF-kappaB activity or TNC knockdown in tumor cells decreased their tumorigenic potential in vivo. Our results uncover a link between NF-kappaB activation in MES GBM and high levels of TNC in GBM extracellular matrix. We suggest that TNC plays an important role in the autocrine regulation of glioma cell plasticity and hence can be a potential molecular target for MES GBM. FAU - Angel, Inbar AU - Angel I AD - School of Neurobiology, Biochemistry and Biophysics, The George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv-Yafo, Israel. FAU - Pilo Kerman, Ori AU - Pilo Kerman O AD - School of Neurobiology, Biochemistry and Biophysics, The George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv-Yafo, Israel. FAU - Rousso-Noori, Liat AU - Rousso-Noori L AD - School of Neurobiology, Biochemistry and Biophysics, The George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv-Yafo, Israel. FAU - Friedmann-Morvinski, Dinorah AU - Friedmann-Morvinski D AUID- ORCID: 0000-0002-6394-9876 AD - School of Neurobiology, Biochemistry and Biophysics, The George S. Wise Faculty of Life Sciences, Tel Aviv University, Tel Aviv-Yafo, Israel. dino@tauex.tau.ac.il. AD - Sagol School of Neuroscience, Tel Aviv University, Tel Aviv-Yafo, Israel. dino@tauex.tau.ac.il. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20201019 PL - England TA - Oncogene JT - Oncogene JID - 8711562 RN - 0 (NF-kappa B) RN - 0 (TNC protein, human) RN - 0 (Tenascin) SB - IM MH - Animals MH - Astrocytes/pathology MH - Brain Neoplasms/*pathology MH - Cell Dedifferentiation MH - Cell Plasticity MH - Cell Transformation, Neoplastic/pathology MH - Extracellular Matrix/pathology MH - Female MH - Gene Knockdown Techniques MH - Glioblastoma/*pathology MH - Humans MH - Mesenchymal Stem Cells/*pathology MH - Mice MH - Mice, Transgenic MH - NF-kappa B/metabolism MH - Neoplastic Stem Cells/*pathology MH - Tenascin/genetics/*metabolism MH - Tumor Microenvironment MH - Xenograft Model Antitumor Assays EDAT- 2020/10/21 06:00 MHDA- 2020/12/15 06:00 CRDT- 2020/10/20 06:20 PHST- 2020/01/06 00:00 [received] PHST- 2020/10/01 00:00 [accepted] PHST- 2020/09/17 00:00 [revised] PHST- 2020/10/21 06:00 [pubmed] PHST- 2020/12/15 06:00 [medline] PHST- 2020/10/20 06:20 [entrez] AID - 10.1038/s41388-020-01506-6 [pii] AID - 10.1038/s41388-020-01506-6 [doi] PST - ppublish SO - Oncogene. 2020 Nov;39(46):6990-7004. doi: 10.1038/s41388-020-01506-6. Epub 2020 Oct 19.