PMID- 17565993 OWN - NLM STAT- MEDLINE DCOM- 20071011 LR - 20220129 IS - 0021-9258 (Print) IS - 0021-9258 (Linking) VI - 282 IP - 34 DP - 2007 Aug 24 TI - Loss of huntingtin function complemented by small molecules acting as repressor element 1/neuron restrictive silencer element silencer modulators. PG - 24554-62 AB - Increased levels of the repressor element 1/neuron restrictive silencer element (RE1/NRSE) silencing activity promoter, and a consequent reduction in the transcription of many RE1/NRSE-bearing neuronal genes, including brain-derived neurotrophic factor (BDNF), have been demonstrated in Huntington disease (HD) and represent one possible effector of its selective neuronal vulnerability. Restoring the expression levels of neuronal genes in diseased neurons therefore seems to be an attractive therapeutic approach. To this end, we have developed a cell-based reporter assay for monitoring RE1/NRSE silencing activity and validated it by genetically inactivating the RE1/NRSE or pharmacologically stimulating global transcription. In a pilot compound screen, we identified three closely related structural analogues that up-regulate reporter expression at low nanomolar concentrations, and follow-up studies have shown that they efficaciously increase endogenous BDNF levels in HD cells. Moreover, one of the compounds increases the viability of HD cells. Our findings suggest a new avenue for the development of drugs for HD and other neurodegenerative disorders based on the pharmacological up-regulation of the production of the neuronal survival factor BDNF and of other RE1/NRSE-regulated neuronal genes. FAU - Rigamonti, Dorotea AU - Rigamonti D AD - Centre for Stem Cell Research and Department of Pharmacological Sciences, University of Milan, Via Balzaretti 9, Milan 20133, Italy. FAU - Bolognini, Daniele AU - Bolognini D FAU - Mutti, Cesare AU - Mutti C FAU - Zuccato, Chiara AU - Zuccato C FAU - Tartari, Marzia AU - Tartari M FAU - Sola, Francesco AU - Sola F FAU - Valenza, Marta AU - Valenza M FAU - Kazantsev, Aleksey G AU - Kazantsev AG FAU - Cattaneo, Elena AU - Cattaneo E LA - eng GR - GGP06250/TI_/Telethon/Italy PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20070612 PL - United States TA - J Biol Chem JT - The Journal of biological chemistry JID - 2985121R RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (Htt protein, rat) RN - 0 (Huntingtin Protein) RN - 0 (Nerve Tissue Proteins) RN - 0 (Nuclear Proteins) RN - 0 (Peptides) RN - 0 (Transcription Factors) RN - EC 1.13.12.- (Luciferases) SB - IM MH - Animals MH - Brain-Derived Neurotrophic Factor/metabolism MH - Cell Survival MH - Dose-Response Relationship, Drug MH - Enzyme-Linked Immunosorbent Assay MH - Gene Expression Regulation MH - Gene Silencing MH - Huntingtin Protein MH - Immunohistochemistry MH - Luciferases/metabolism MH - Models, Chemical MH - Nerve Tissue Proteins/metabolism/*physiology MH - Neurons/metabolism MH - Nuclear Proteins/metabolism/*physiology MH - Peptides/chemistry MH - Rats MH - Transcription Factors/metabolism EDAT- 2007/06/15 09:00 MHDA- 2007/10/12 09:00 CRDT- 2007/06/15 09:00 PHST- 2007/06/15 09:00 [pubmed] PHST- 2007/10/12 09:00 [medline] PHST- 2007/06/15 09:00 [entrez] AID - S0021-9258(18)80939-5 [pii] AID - 10.1074/jbc.M609885200 [doi] PST - ppublish SO - J Biol Chem. 2007 Aug 24;282(34):24554-62. doi: 10.1074/jbc.M609885200. Epub 2007 Jun 12.