PMID- 12460985 OWN - NLM STAT- MEDLINE DCOM- 20030123 LR - 20181113 IS - 0021-9525 (Print) IS - 1540-8140 (Electronic) IS - 0021-9525 (Linking) VI - 159 IP - 5 DP - 2002 Dec 9 TI - Brain-derived neurotrophic factor can act as a pronecrotic factor through transcriptional and translational activation of NADPH oxidase. PG - 821-31 AB - Several lines of evidence suggest that neurotrophins (NTs) potentiate or cause neuronal injury under various pathological conditions. Since NTs enhance survival and differentiation of cultured neurons in serum or defined media containing antioxidants, we set out experiments to delineate the patterns and underlying mechanisms of brain-derived neurotrophic factor (BDNF)-induced neuronal injury in mixed cortical cell cultures containing glia and neurons in serum-free media without antioxidants, where the three major routes of neuronal cell death, oxidative stress, excitotoxicity, and apoptosis, have been extensively studied. Rat cortical cell cultures, after prolonged exposure to NTs, underwent widespread neuronal necrosis. BDNF-induced neuronal necrosis was accompanied by reactive oxygen species (ROS) production and was dependent on the macromolecular synthesis. cDNA microarray analysis revealed that BDNF increased the expression of cytochrome b558, the plasma membrane-spanning subunit of NADPH oxidase. The expression and activation of NADPH oxidase were increased after exposure to BDNF. The selective inhibitors of NADPH oxidase prevented BDNF-induced ROS production and neuronal death without blocking antiapoptosis action of BDNF. The present study suggests that BDNF-induced expression and activation of NADPH oxidase cause oxidative neuronal necrosis and that the neurotrophic effects of NTs can be maximized under blockade of the pronecrotic action. FAU - Kim, Sun H AU - Kim SH AD - Department of Pharmacology, Center for the Interventional Therapy of Stroke and Alzheimer's Disease, School of Medicine, Ajou University, Suwon, Kyungkido, South Korea. FAU - Won, Seok J AU - Won SJ FAU - Sohn, Seonghyang AU - Sohn S FAU - Kwon, Hyuk J AU - Kwon HJ FAU - Lee, Jee Y AU - Lee JY FAU - Park, Jong H AU - Park JH FAU - Gwag, Byoung J AU - Gwag BJ LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20021202 PL - United States TA - J Cell Biol JT - The Journal of cell biology JID - 0375356 RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (Cytochrome b Group) RN - 0 (Enzyme Inhibitors) RN - 0 (RNA, Messenger) RN - 0 (Reactive Oxygen Species) RN - 9064-78-2 (cytochrome b558) RN - EC 1.6.3.- (NADPH Oxidases) SB - IM MH - Animals MH - Brain-Derived Neurotrophic Factor/*pharmacology/physiology MH - Cell Death/drug effects MH - Cells, Cultured MH - Cerebral Cortex/cytology/drug effects/*enzymology MH - Coculture Techniques MH - Corpus Striatum/cytology MH - Cytochrome b Group/metabolism MH - Enzyme Activation MH - Enzyme Inhibitors/pharmacology MH - *Gene Expression Regulation, Enzymologic MH - Male MH - NADPH Oxidases/chemistry/*genetics/metabolism MH - *Necrosis MH - Neuroglia/cytology MH - Neurons/*enzymology/metabolism/ultrastructure MH - Oxidative Stress/drug effects MH - Protein Biosynthesis MH - RNA, Messenger/metabolism MH - Rats MH - Rats, Sprague-Dawley MH - Reactive Oxygen Species/metabolism MH - Transcription, Genetic PMC - PMC2173377 EDAT- 2002/12/04 04:00 MHDA- 2003/01/24 04:00 PMCR- 2003/06/09 CRDT- 2002/12/04 04:00 PHST- 2002/12/04 04:00 [pubmed] PHST- 2003/01/24 04:00 [medline] PHST- 2002/12/04 04:00 [entrez] PHST- 2003/06/09 00:00 [pmc-release] AID - jcb.200112131 [pii] AID - 200112131 [pii] AID - 10.1083/jcb.200112131 [doi] PST - ppublish SO - J Cell Biol. 2002 Dec 9;159(5):821-31. doi: 10.1083/jcb.200112131. Epub 2002 Dec 2.