PMID- 26755664 OWN - NLM STAT- MEDLINE DCOM- 20170124 LR - 20181113 IS - 1949-2553 (Electronic) IS - 1949-2553 (Linking) VI - 7 IP - 5 DP - 2016 Feb 2 TI - Preferential expression of functional IL-17R in glioma stem cells: potential role in self-renewal. PG - 6121-35 LID - 10.18632/oncotarget.6847 [doi] AB - Gliomas are the most common primary brain tumor and one of the most lethal solid tumors. Mechanistic studies into identification of novel biomarkers are needed to develop new therapeutic strategies for this deadly disease. The objective for this study was to explore the potential direct impact of IL-17-IL-17R interaction in gliomas. Immunohistochemistry and flow cytometry analysis of 12 tumor samples obtained from patients with high grade gliomas revealed that a considerable population (2-19%) of cells in all malignant gliomas expressed IL-17RA, with remarkable co-expression of the glioma stem cell (GSC) markers CD133, Nestin, and Sox2. IL-17 enhanced the self-renewal of GSCs as determined by proliferation and Matrigel(R) colony assays. IL-17 also induced cytokine/chemokine (IL-6, IL-8, interferon-gamma-inducible protein [IP-10], and monocyte chemoattractant protein-1 [MCP-1]) secretion in GSCs, which were differentially blocked by antibodies against IL-17R and IL-6R. Western blot analysis showed that IL-17 modulated the activity of signal transducer and activator of transcription 3 (STAT3), nuclear factor kappa-light-chain-enhancer of activated B cells (NF-kappaB), glycogen synthase kinase-3beta (GSK-3beta) and beta-catenin in GSCs. While IL-17R-mediated secretion of IL-6 and IL-8 were significantly blocked by inhibitors of NF-kappaB and STAT3; NF-kappaB inhibitor was more potent than STAT3 inhibitor in blocking IL-17-induced MCP-1 secretion. Overall, our results suggest that IL-17-IL-17R interaction in GSCs induces an autocrine/paracrine cytokine feedback loop, which may provide an important signaling component for maintenance/self-renewal of GSCs via constitutive activation of both NF-kappaB and STAT3. The results also strongly implicate IL-17R as an important functional biomarker for therapeutic targeting of GSCs. FAU - Parajuli, Prahlad AU - Parajuli P AD - Department of Neurosurgery, Wayne State University and Karmanos Cancer Institute, Detroit, MI, USA. FAU - Anand, Rohit AU - Anand R AD - Department of Neurosurgery, Wayne State University and Karmanos Cancer Institute, Detroit, MI, USA. FAU - Mandalaparty, Chandramouli AU - Mandalaparty C AD - Department of Neurosurgery, Wayne State University and Karmanos Cancer Institute, Detroit, MI, USA. FAU - Suryadevara, Raviteja AU - Suryadevara R AD - Department of Neurosurgery, Wayne State University and Karmanos Cancer Institute, Detroit, MI, USA. FAU - Sriranga, Preethi U AU - Sriranga PU AD - Department of Neurosurgery, Wayne State University and Karmanos Cancer Institute, Detroit, MI, USA. FAU - Michelhaugh, Sharon K AU - Michelhaugh SK AD - Department of Neurosurgery, Wayne State University and Karmanos Cancer Institute, Detroit, MI, USA. FAU - Cazacu, Simona AU - Cazacu S AD - Hermelin Brain Tumor Center, Henry Ford Hospital, Detroit, MI, USA. FAU - Finniss, Susan AU - Finniss S AD - Hermelin Brain Tumor Center, Henry Ford Hospital, Detroit, MI, USA. FAU - Thakur, Archana AU - Thakur A AD - Department of Oncology, Wayne State University and Karmanos Cancer Institute, Detroit, MI, USA. FAU - Lum, Lawrence G AU - Lum LG AD - Department of Oncology, Wayne State University and Karmanos Cancer Institute, Detroit, MI, USA. AD - Departments of Internal Medicine, Immunology and Microbiology and Pediatrics, Wayne State University, Detroit, MI, USA. FAU - Schalk, Dana AU - Schalk D AD - Department of Oncology, Wayne State University and Karmanos Cancer Institute, Detroit, MI, USA. FAU - Brodie, Chaya AU - Brodie C AD - Hermelin Brain Tumor Center, Henry Ford Hospital, Detroit, MI, USA. FAU - Mittal, Sandeep AU - Mittal S AD - Department of Neurosurgery, Wayne State University and Karmanos Cancer Institute, Detroit, MI, USA. AD - Department of Oncology, Wayne State University and Karmanos Cancer Institute, Detroit, MI, USA. LA - eng GR - R01 CA123451/CA/NCI NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't PL - United States TA - Oncotarget JT - Oncotarget JID - 101532965 RN - 0 (IL17A protein, human) RN - 0 (Interleukin-17) RN - 0 (NF-kappa B) SB - IM MH - Aged MH - Cell Proliferation/physiology MH - Female MH - Glioma/genetics/*metabolism/pathology MH - Humans MH - Interleukin-17/*biosynthesis MH - Male MH - Middle Aged MH - NF-kappa B/metabolism MH - Signal Transduction PMC - PMC4868744 OTO - NOTNLM OT - IL-17 OT - IL-17R OT - IL-6 OT - NF-kappaB OT - glioma stem cells (GSCs) COIS- CONFLICTS OF INTEREST The authors declare that they have no conflicts of interests or disclosures. EDAT- 2016/01/13 06:00 MHDA- 2017/01/25 06:00 PMCR- 2016/02/02 CRDT- 2016/01/13 06:00 PHST- 2015/07/22 00:00 [received] PHST- 2015/12/26 00:00 [accepted] PHST- 2016/01/13 06:00 [entrez] PHST- 2016/01/13 06:00 [pubmed] PHST- 2017/01/25 06:00 [medline] PHST- 2016/02/02 00:00 [pmc-release] AID - 6847 [pii] AID - 10.18632/oncotarget.6847 [doi] PST - ppublish SO - Oncotarget. 2016 Feb 2;7(5):6121-35. doi: 10.18632/oncotarget.6847.