PMID- 21572341 OWN - NLM STAT- MEDLINE DCOM- 20110722 LR - 20171116 IS - 1554-6578 (Electronic) IS - 0022-3069 (Linking) VI - 70 IP - 6 DP - 2011 Jun TI - GLI2 is a potential therapeutic target in pediatric medulloblastoma. PG - 430-7 LID - 10.1097/NEN.0b013e31821b94db [doi] AB - To determine whether the zinc finger transcription factors GLI1 to GLI3 and suppressor of fused (SUFU) components of the Sonic hedgehog signaling pathway may be prognostic markers and potential therapeutic targets in pediatric medulloblastoma (MB), we investigated the relationship of the expression of these proteins to prognosis in the MB of 124 patients who had undergone surgery at the Hospital for Sick Children (Toronto, Ontario, Canada). The expressions of GLI1 (p = 0.011) and GLI2 (p = 0.003), but not of GLI3 (p = 0.774) or SUFU (p = 0.137), in the MB were associated with a worse overall survival by Kaplan-Meier analysis. Overall survival of patients positive for GLI1 and GLI2 was 6.01 +/- 0.85 years and 5.27 +/- 1.44 years, respectively, versus 10.11 +/- 1.52 years and 10.18 +/- 0.22 years for patients negative for GLI1 and GLI2, respectively. Knockdown of GLI2 in 3 MB cell lines resulted in decreased cell number and viability, as determined by the MTT (3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide) assay; knockdown of GLI1 had no effect. The decrease in cell number with GLI2 knockdown was caused by G0 cell cycle arrest; there was no induction of apoptosis. These results suggest that targeting the Sonic hedgehog pathway in positive patients may be a useful adjuvant therapeutic strategy for MB. FAU - Buczkowicz, Pawel AU - Buczkowicz P AD - Division of Pathology, Department of Paediatric Laboratory Medicine, The Hospital for Sick Children, University of Toronto, Canada. FAU - Ma, Jing AU - Ma J FAU - Hawkins, Cynthia AU - Hawkins C LA - eng GR - MOP 82727/Canadian Institutes of Health Research/Canada PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - J Neuropathol Exp Neurol JT - Journal of neuropathology and experimental neurology JID - 2985192R RN - 0 (GLI1 protein, human) RN - 0 (GLI2 protein, human) RN - 0 (Kruppel-Like Transcription Factors) RN - 0 (Nuclear Proteins) RN - 0 (RNA, Small Interfering) RN - 0 (Transcription Factors) RN - 0 (Zinc Finger Protein GLI1) RN - 0 (Zinc Finger Protein Gli2) SB - IM MH - Adolescent MH - Apoptosis/drug effects/*physiology MH - Cell Line, Tumor MH - Cerebellar Neoplasms/*metabolism/pathology MH - Child MH - Child, Preschool MH - Female MH - Gene Expression Regulation/drug effects/genetics MH - Humans MH - In Situ Nick-End Labeling/methods MH - Infant MH - Kruppel-Like Transcription Factors/genetics/*metabolism MH - Male MH - Medulloblastoma/*metabolism/pathology MH - Nuclear Proteins/genetics/*metabolism MH - Pediatrics MH - RNA, Small Interfering/pharmacology MH - Retrospective Studies MH - Transcription Factors/genetics/metabolism MH - Transduction, Genetic/methods MH - Zinc Finger Protein GLI1 MH - Zinc Finger Protein Gli2 EDAT- 2011/05/17 06:00 MHDA- 2011/07/23 06:00 CRDT- 2011/05/17 06:00 PHST- 2011/05/17 06:00 [entrez] PHST- 2011/05/17 06:00 [pubmed] PHST- 2011/07/23 06:00 [medline] AID - 10.1097/NEN.0b013e31821b94db [doi] PST - ppublish SO - J Neuropathol Exp Neurol. 2011 Jun;70(6):430-7. doi: 10.1097/NEN.0b013e31821b94db.