PMID- 17188890 OWN - NLM STAT- MEDLINE DCOM- 20070417 LR - 20181201 IS - 1044-7431 (Print) IS - 1095-9327 (Electronic) IS - 1044-7431 (Linking) VI - 34 IP - 2 DP - 2007 Feb TI - Pro-NGF secreted by astrocytes promotes motor neuron cell death. PG - 271-9 AB - It is well established that motor neurons depend for their survival on many trophic factors. In this study, we show that the precursor form of NGF (pro-NGF) can induce the death of motor neurons via engagement of the p75 neurotrophin receptor. The pro-apoptotic activity was dependent upon the presence of sortilin, a p75 co-receptor expressed on motor neurons. One potential source of pro-NGF is reactive astrocytes, which up-regulate the levels of pro-NGF in response to peroxynitrite, an oxidant and producer of free radicals. Indeed, motor neuron viability was sensitive to conditioned media from cultured astrocytes treated with peroxynitrite and this effect could be reversed using a specific antibody against the pro-domain of pro-NGF. These results are consistent with a role for activated astrocytes and pro-NGF in the induction of motor neuron death and suggest a possible therapeutic target for the treatment of motor neuron disease. FAU - Domeniconi, Marco AU - Domeniconi M AD - Molecular Neurobiology Program, Skirball Institute of Biomolecular Medicine, Department of Cell Biology, New York University School of Medicine, 540 First Avenue, New York, NY 10016, USA. FAU - Hempstead, Barbara L AU - Hempstead BL FAU - Chao, Moses V AU - Chao MV LA - eng GR - HD023315/HD/NICHD NIH HHS/United States GR - P01 HD023315/HD/NICHD NIH HHS/United States GR - NS21072/NS/NINDS NIH HHS/United States GR - R01 NS021072/NS/NINDS NIH HHS/United States GR - P01 HD023315-200002/HD/NICHD NIH HHS/United States GR - R01 NS021072-22/NS/NINDS NIH HHS/United States GR - R01 AG025970/AG/NIA NIH HHS/United States GR - R56 NS021072/NS/NINDS NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20061226 PL - United States TA - Mol Cell Neurosci JT - Molecular and cellular neurosciences JID - 9100095 RN - 0 (Adaptor Proteins, Vesicular Transport) RN - 0 (Culture Media, Conditioned) RN - 0 (Homeodomain Proteins) RN - 0 (LIM-Homeodomain Proteins) RN - 0 (Membrane Glycoproteins) RN - 0 (Nerve Growth Factors) RN - 0 (Nerve Tissue Proteins) RN - 0 (Protein Precursors) RN - 0 (Transcription Factors) RN - 0 (insulin gene enhancer binding protein Isl-1) RN - 0 (pro-nerve growth factor, rat) RN - 14691-52-2 (Peroxynitrous Acid) RN - Z020Y8WIJ4 (sortilin) SB - IM MH - Adaptor Proteins, Vesicular Transport MH - Analysis of Variance MH - Animals MH - Animals, Newborn MH - Astrocytes/*chemistry MH - Cell Death/drug effects MH - Cells, Cultured MH - Culture Media, Conditioned/pharmacology MH - Embryo, Mammalian MH - Gene Expression/drug effects/physiology MH - Homeodomain Proteins/metabolism MH - LIM-Homeodomain Proteins MH - Membrane Glycoproteins/metabolism MH - Motor Neurons/*drug effects MH - Nerve Growth Factors/*pharmacology MH - Nerve Tissue Proteins/metabolism MH - Peroxynitrous Acid/pharmacology MH - Protein Precursors/*pharmacology MH - Rats MH - Spinal Cord/cytology MH - Transcription Factors PMC - PMC2570110 MID - NIHMS18062 EDAT- 2006/12/26 09:00 MHDA- 2007/04/18 09:00 PMCR- 2008/10/20 CRDT- 2006/12/26 09:00 PHST- 2006/08/18 00:00 [received] PHST- 2006/10/23 00:00 [revised] PHST- 2006/11/10 00:00 [accepted] PHST- 2006/12/26 09:00 [pubmed] PHST- 2007/04/18 09:00 [medline] PHST- 2006/12/26 09:00 [entrez] PHST- 2008/10/20 00:00 [pmc-release] AID - S1044-7431(06)00257-0 [pii] AID - 10.1016/j.mcn.2006.11.005 [doi] PST - ppublish SO - Mol Cell Neurosci. 2007 Feb;34(2):271-9. doi: 10.1016/j.mcn.2006.11.005. Epub 2006 Dec 26.