PMID- 16702990 OWN - NLM STAT- MEDLINE DCOM- 20061226 LR - 20181201 IS - 0007-1188 (Print) IS - 1476-5381 (Electronic) IS - 0007-1188 (Linking) VI - 148 IP - 5 DP - 2006 Jul TI - Moclobemide upregulated Bcl-2 expression and induced neural stem cell differentiation into serotoninergic neuron via extracellular-regulated kinase pathway. PG - 587-98 AB - 1. Moclobemide (MB) is an antidepressant drug that selectively and reversibly inhibits monoamine oxidase-A. Recent studies have revealed that antidepressant drugs possess the characters of potent growth-promoting factors for the development of neurogenesis and improve the survival rate of serotonin (5-hydroxytrytamine; 5-HT) neurons. However, whether MB comprises neuroprotection effects or modulates the proliferation of neural stem cells (NSCs) needs to be elucidated. 2. In this study, firstly, we used the MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide) assay to demonstrate that 50 microM MB can increase the cell viability of NSCs. The result of real-time reverse transcription-polymerase chain reaction (RT-PCR) showed that the induction of MB can upregulate the gene expressions of Bcl-2 and Bcl-xL. By using caspases 8 and 3, ELISA and terminal dUTP nick-end labeling (TUNEL) assay, our data further confirmed that 50 microM MB-treated NSCs can prevent FasL-induced apoptosis. 3. The morphological findings also supported the evidence that MB can facilitate the dendritic development and increase the neurite expansion of NSCs. Moreover, we found that MB treatment increased the expression of Bcl-2 in NSCs through activating the extracellular-regulated kinase (ERK) phosphorylation. 4. By using the triple-staining immunofluorescent study, the percentages of serotonin- and MAP-2-positive cells in the day 7 culture of MB-treated NSCs were significantly increased (P<0.01). Furthermore, our data supported that MB treatment increased functional production of serotonin in NSCs via the modulation of ERK1/2. In sum, the study results support that MB can upregulate Bcl-2 expression and induce the differentiation of NSCs into serotoninergic neuron via ERK pathway. FAU - Chiou, Shih-Hwa AU - Chiou SH AD - Department of Medical Research and Education, Taipei Veterans General Hospital and National Yang-Ming University, Taipei, Taiwan. shchiou@vghtpe.gov.tw FAU - Ku, Hung-Hai AU - Ku HH FAU - Tsai, Tung-Hu AU - Tsai TH FAU - Lin, Heng-Liang AU - Lin HL FAU - Chen, Li-Hsin AU - Chen LH FAU - Chien, Chan-Shiu AU - Chien CS FAU - Ho, Larry L-T AU - Ho LL FAU - Lee, Chen-Hsen AU - Lee CH FAU - Chang, Yuh-Lih AU - Chang YL LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20060515 PL - England TA - Br J Pharmacol JT - British journal of pharmacology JID - 7502536 RN - 0 (Apoptosis Regulatory Proteins) RN - 0 (Proto-Oncogene Proteins c-bcl-2) RN - 333DO1RDJY (Serotonin) RN - EC 2.7.11.24 (Extracellular Signal-Regulated MAP Kinases) RN - EC 2.7.11.24 (Mitogen-Activated Protein Kinase 1) RN - EC 2.7.11.24 (Mitogen-Activated Protein Kinase 3) RN - PJ0Y7AZB63 (Moclobemide) SB - IM CIN - Br J Pharmacol. 2006 Jul;148(5):563-4. PMID: 16702988 MH - Animals MH - Apoptosis Regulatory Proteins/analysis/metabolism MH - Cell Differentiation/*drug effects MH - Cell Survival/drug effects MH - Chromatography, High Pressure Liquid MH - Enzyme-Linked Immunosorbent Assay MH - Extracellular Signal-Regulated MAP Kinases/metabolism/*physiology MH - Gene Expression Regulation/drug effects MH - In Situ Nick-End Labeling MH - Mitogen-Activated Protein Kinase 1/metabolism MH - Mitogen-Activated Protein Kinase 3/metabolism MH - Moclobemide/*pharmacology MH - Neurites/drug effects MH - Neurons/*drug effects/metabolism MH - Phosphorylation/drug effects MH - Proto-Oncogene Proteins c-bcl-2/*metabolism MH - Rats MH - Rats, Sprague-Dawley MH - Reverse Transcriptase Polymerase Chain Reaction MH - Serotonin/*metabolism MH - Signal Transduction MH - Stem Cells/*drug effects PMC - PMC1751873 EDAT- 2006/05/17 09:00 MHDA- 2006/12/27 09:00 PMCR- 2007/07/01 CRDT- 2006/05/17 09:00 PHST- 2006/05/17 09:00 [pubmed] PHST- 2006/12/27 09:00 [medline] PHST- 2006/05/17 09:00 [entrez] PHST- 2007/07/01 00:00 [pmc-release] AID - 0706766 [pii] AID - 10.1038/sj.bjp.0706766 [doi] PST - ppublish SO - Br J Pharmacol. 2006 Jul;148(5):587-98. doi: 10.1038/sj.bjp.0706766. Epub 2006 May 15.