PMID- 19658188 OWN - NLM STAT- MEDLINE DCOM- 20100217 LR - 20220223 IS - 1549-4918 (Electronic) IS - 1066-5099 (Print) IS - 1066-5099 (Linking) VI - 27 IP - 10 DP - 2009 Oct TI - Targeting interleukin 6 signaling suppresses glioma stem cell survival and tumor growth. PG - 2393-404 LID - 10.1002/stem.188 [doi] AB - Glioblastomas are the most common and most lethal primary brain tumor. Recent studies implicate an important role for a restricted population of neoplastic cells (glioma stem cells (GSCs)) in glioma maintenance and recurrence. We now demonstrate that GSCs preferentially express two interleukin 6 (IL6) receptors: IL6 receptor alpha (IL6R alpha) and glycoprotein 130 (gp130). Targeting IL6R alpha or IL6 ligand expression in GSCs with the use of short hairpin RNAs (shRNAs) significantly reduces growth and neurosphere formation capacity while increasing apoptosis. Perturbation of IL6 signaling in GSCs attenuates signal transducers and activators of transcription three (STAT3) activation, and small molecule inhibitors of STAT3 potently induce GSC apoptosis. These data indicate that STAT3 is a downstream mediator of prosurvival IL6 signals in GSCs. Targeting of IL6R alpha or IL6 expression in GSCs increases the survival of mice bearing intracranial human glioma xenografts. IL6 is clinically significant because elevated IL6 ligand and receptor expression are associated with poor glioma patient survival. The potential utility of anti-IL6 therapies is demonstrated by decreased growth of subcutaneous human GSC-derived xenografts treated with IL6 antibody. Together, our data indicate that IL6 signaling contributes to glioma malignancy through the promotion of GSC growth and survival, and that targeting IL6 may offer benefit for glioma patients. FAU - Wang, Hui AU - Wang H AD - Department of Pharmacology, Duke University Medical Center, Durham, North Carolina, USA. FAU - Lathia, Justin D AU - Lathia JD FAU - Wu, Qiulian AU - Wu Q FAU - Wang, Jialiang AU - Wang J FAU - Li, Zhizhong AU - Li Z FAU - Heddleston, John M AU - Heddleston JM FAU - Eyler, Christine E AU - Eyler CE FAU - Elderbroom, Jennifer AU - Elderbroom J FAU - Gallagher, Joseph AU - Gallagher J FAU - Schuschu, Jesse AU - Schuschu J FAU - MacSwords, Jennifer AU - MacSwords J FAU - Cao, Yiting AU - Cao Y FAU - McLendon, Roger E AU - McLendon RE FAU - Wang, Xiao-Fan AU - Wang XF FAU - Hjelmeland, Anita B AU - Hjelmeland AB FAU - Rich, Jeremy N AU - Rich JN LA - eng GR - R01 CA116659/CA/NCI NIH HHS/United States GR - R01 NS054276-03/NS/NINDS NIH HHS/United States GR - R01 CA116659-05/CA/NCI NIH HHS/United States GR - CA122998/CA/NCI NIH HHS/United States GR - CA129958/CA/NCI NIH HHS/United States GR - R01 CA116659-04/CA/NCI NIH HHS/United States GR - CA116659/CA/NCI NIH HHS/United States GR - R01 CA122998/CA/NCI NIH HHS/United States GR - K02 NS047409-04/NS/NINDS NIH HHS/United States GR - R01 CA129958-02/CA/NCI NIH HHS/United States GR - R01 CA129958/CA/NCI NIH HHS/United States GR - R01 CA122998-04/CA/NCI NIH HHS/United States GR - R01 CA122998-03/CA/NCI NIH HHS/United States GR - NS054276/NS/NINDS NIH HHS/United States GR - K02 NS047409/NS/NINDS NIH HHS/United States GR - NS047409/NS/NINDS NIH HHS/United States GR - R01 NS054276/NS/NINDS NIH HHS/United States GR - R01 CA129958-01A1/CA/NCI NIH HHS/United States GR - R01 NS054276-04/NS/NINDS NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't PL - England TA - Stem Cells JT - Stem cells (Dayton, Ohio) JID - 9304532 RN - 0 (Growth Inhibitors) RN - 0 (Interleukin-6) RN - 0 (RNA, Small Interfering) RN - 0 (Receptors, Interleukin-6) RN - 0 (STAT3 Transcription Factor) RN - 133483-10-0 (Cytokine Receptor gp130) SB - IM MH - Animals MH - Apoptosis/genetics MH - Brain Neoplasms/*drug therapy/genetics/immunology MH - Cell Proliferation/drug effects MH - Cell Survival/drug effects/genetics/immunology MH - Cytokine Receptor gp130/drug effects/genetics/metabolism MH - Glioma/*drug therapy/genetics/immunology MH - Graft Survival/drug effects/physiology MH - Growth Inhibitors/pharmacology MH - Humans MH - Interleukin-6/*antagonists & inhibitors/metabolism MH - Mice MH - Mice, Nude MH - Neoplastic Stem Cells/*drug effects/immunology/metabolism MH - RNA Interference/physiology MH - RNA, Small Interfering/pharmacology MH - Receptors, Interleukin-6/drug effects/genetics/metabolism MH - STAT3 Transcription Factor/metabolism MH - Signal Transduction/drug effects/genetics/immunology MH - Transplantation, Heterologous MH - Tumor Cells, Cultured PMC - PMC2825688 MID - NIHMS165168 COIS- Disclaimers: The authors have no potential conflicts of interest. EDAT- 2009/08/07 09:00 MHDA- 2010/02/18 06:00 PMCR- 2010/10/01 CRDT- 2009/08/07 09:00 PHST- 2009/08/07 09:00 [entrez] PHST- 2009/08/07 09:00 [pubmed] PHST- 2010/02/18 06:00 [medline] PHST- 2010/10/01 00:00 [pmc-release] AID - 10.1002/stem.188 [doi] PST - ppublish SO - Stem Cells. 2009 Oct;27(10):2393-404. doi: 10.1002/stem.188.