PMID- 18544182 OWN - NLM STAT- MEDLINE DCOM- 20090313 LR - 20161020 IS - 1461-1457 (Print) IS - 1461-1457 (Linking) VI - 12 IP - 1 DP - 2009 Feb TI - Single immobilization stress differentially alters the expression profile of transcripts of the brain-derived neurotrophic factor (BDNF) gene and histone acetylation at its promoters in the rat hippocampus. PG - 73-82 LID - 10.1017/S1461145708008997 [doi] AB - Decreased levels of brain-derived neurotrophic factor (BDNF) in the hippocampus are implicated in the pathophysiology of major depression, although the mechanism has yet to be characterized. Epigenetic studies revealed that DNA methylation and histone modifications at the promoter of exons of the BDNF gene are the pivotal factors in the regulation of BDNF transcription. Histone acetylation regulates gene transcription through chromatin remodelling. We examined the influence of a single immobilization stress (SIS) at 2 h and 24 h afterwards on the levels of total BDNF mRNA with each exon mRNA by quantitative real-time PCR, acetylated histone at the promoters of the BDNF gene by chromatin immunoprecipitation followed by real-time PCR, and BDNF protein by ELISA in the rat hippocampus. SIS significantly decreased the levels of total BDNF mRNA with significantly reduced levels of exons I and IV mRNA followed by a significant reduction in BDNF protein 4 h after SIS. Significant decreases in the levels of acetylated histone H3, but not H4, were found at the promoters of exons I, IV, and VI. In contrast, no marked changes in the levels of either acetylated histone or BDNF mRNA and protein were found 24 h after SIS. This study demonstrated the involvement of histone acetylation in the regulation of BDNF transcription by SIS, and the plastic change in histone acetylation after SIS. These findings suggest that stress affects BDNF gene transcription via epigenetic regulation, and glucocorticoid may be involved in this regulation. FAU - Fuchikami, Manabu AU - Fuchikami M AD - Department of Psychiatry and Neurosciences, Division of Frontier Medicine, Graduate School of Medical Sciences, Hiroshima University, Hiroshima, Japan. FAU - Morinobu, Shigeru AU - Morinobu S FAU - Kurata, Akiko AU - Kurata A FAU - Yamamoto, Shigeto AU - Yamamoto S FAU - Yamawaki, Shigeto AU - Yamawaki S LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20080611 PL - England TA - Int J Neuropsychopharmacol JT - The international journal of neuropsychopharmacology JID - 9815893 RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (Histones) RN - 0 (Untranslated Regions) RN - W980KJ009P (Corticosterone) SB - IM MH - Acetylation MH - Animals MH - Brain-Derived Neurotrophic Factor/*biosynthesis/genetics MH - Chromatin Immunoprecipitation MH - Corticosterone/blood MH - Enzyme-Linked Immunosorbent Assay MH - Exons/genetics MH - Hippocampus/*metabolism MH - Histones/*metabolism MH - Male MH - Promoter Regions, Genetic/genetics MH - Rats MH - Rats, Sprague-Dawley MH - *Restraint, Physical MH - Reverse Transcriptase Polymerase Chain Reaction MH - Stress, Psychological/metabolism/*psychology MH - Untranslated Regions/genetics EDAT- 2008/06/12 09:00 MHDA- 2009/03/14 09:00 CRDT- 2008/06/12 09:00 PHST- 2008/06/12 09:00 [pubmed] PHST- 2009/03/14 09:00 [medline] PHST- 2008/06/12 09:00 [entrez] AID - S1461145708008997 [pii] AID - 10.1017/S1461145708008997 [doi] PST - ppublish SO - Int J Neuropsychopharmacol. 2009 Feb;12(1):73-82. doi: 10.1017/S1461145708008997. Epub 2008 Jun 11.