PMID- 30067287 OWN - NLM STAT- MEDLINE DCOM- 20190826 LR - 20211204 IS - 1098-1063 (Electronic) IS - 1050-9631 (Linking) VI - 28 IP - 11 DP - 2018 Nov TI - Global epigenetic analysis of BDNF Val66Met mice hippocampus reveals changes in dendrite and spine remodeling genes. PG - 783-795 LID - 10.1002/hipo.22991 [doi] AB - Brain-derived neurotrophic factor (BDNF), a neurotrophin highly expressed in the hippocampus, plays crucial roles in cognition, neuroplasticity, synaptic function, and dendritic remodeling. The common human Val66Met polymorphism of BDNF has been implicated in the pathophysiology of neuropsychiatric and neurodegenerative disorders, and in the outcome of pro-adaptive and therapeutic treatments. Altered gene-expression profile has been previously shown in BDNF Val66Met knock-in mice, which recapitulate the phenotypic hallmarks of individuals carrying the BDNF Met allele. The aim of this study was to investigate the impact of the BDNF Val66Met polymorphism in the knock-in mouse model on two hippocampal epigenetic marks for transcriptional repression and activation, respectively: trimethylation of lysine 27 on histone H3 (H3K27me3) and acetylation of histone H3 (AcH3), using a genome-wide approach. Chromatin immunoprecipitation followed by deep sequencing of immunoprecipitated DNA (ChIP-Seq) was carried out with specific antibodies for H3K27me3 and AcH3. Our results revealed broad alteration of H3K27me3 and AcH3 marks association profiles in BDNF(Met/Met) , compared to BDNF(Val/Val) mice. Bioinformatics analysis showed changes in several biological functions and related pathways, affected by the presence of the polymorphism. In particular, a number of networks of functional interaction contained BDNF as central node. Quantitative PCR analysis confirmed epigenetically related significant changes in the expression of five genes: Dvl1, Nos3, Reln, Lypd6, and Sh3gl2. The first three are involved in dendrite and spine remodeling, morphological features altered in BDNF(Met/Met) mice. This work in homozygous knock-in mice shows that the human BDNF Val66Met polymorphism induces an array of histone H3 epigenetic modifications, in turn altering the expression of select genes crucial for structural and functional neuronal features. CI - (c) 2018 Wiley Periodicals, Inc. FAU - Mallei, Alessandra AU - Mallei A AD - Laboratory of Neuropsychopharmacology and Functional Neurogenomics, Dipartimento di Scienze Farmacologiche e Biomolecolari and CEND, Universita degli Studi di Milano, Milan, Italy. FAU - Ieraci, Alessandro AU - Ieraci A AD - Laboratory of Neuropsychopharmacology and Functional Neurogenomics, Dipartimento di Scienze Farmacologiche e Biomolecolari and CEND, Universita degli Studi di Milano, Milan, Italy. FAU - Corna, Stefano AU - Corna S AD - Laboratory of Neuropsychopharmacology and Functional Neurogenomics, Dipartimento di Scienze Farmacologiche e Biomolecolari and CEND, Universita degli Studi di Milano, Milan, Italy. FAU - Tardito, Daniela AU - Tardito D AD - Laboratory of Neuropsychopharmacology and Functional Neurogenomics, Dipartimento di Scienze Farmacologiche e Biomolecolari and CEND, Universita degli Studi di Milano, Milan, Italy. FAU - Lee, Francis S AU - Lee FS AD - Department of Psychiatry, Weill Cornell Medical College of Cornell University, New York, New York. FAU - Popoli, Maurizio AU - Popoli M AUID- ORCID: 0000-0003-4670-8664 AD - Laboratory of Neuropsychopharmacology and Functional Neurogenomics, Dipartimento di Scienze Farmacologiche e Biomolecolari and CEND, Universita degli Studi di Milano, Milan, Italy. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Hippocampus JT - Hippocampus JID - 9108167 RN - 0 (Brain-Derived Neurotrophic Factor) RN - 0 (CTNNB1 protein, mouse) RN - 0 (Histones) RN - 0 (Reelin Protein) RN - 0 (Wnt Proteins) RN - 0 (beta Catenin) RN - 7171WSG8A2 (BDNF protein, human) RN - EC 3.4.21.- (RELN protein, human) RN - EC 3.4.21.- (Reln protein, mouse) MH - Animals MH - Brain-Derived Neurotrophic Factor/*genetics/*metabolism MH - Computational Biology MH - Dendrites/*metabolism MH - *Epigenesis, Genetic MH - Gene Knock-In Techniques MH - Hippocampus/*metabolism MH - Histones/genetics/metabolism MH - Humans MH - Male MH - Mice, Transgenic MH - *Polymorphism, Genetic MH - Reelin Protein MH - Wnt Proteins/metabolism MH - beta Catenin/metabolism OTO - NOTNLM OT - BDNF polymorphism OT - ChIP-Seq OT - epigenetics OT - gene expression OT - synaptic remodeling EDAT- 2018/08/02 06:00 MHDA- 2019/08/27 06:00 CRDT- 2018/08/02 06:00 PHST- 2018/01/16 00:00 [received] PHST- 2018/05/15 00:00 [revised] PHST- 2018/05/24 00:00 [accepted] PHST- 2018/08/02 06:00 [pubmed] PHST- 2019/08/27 06:00 [medline] PHST- 2018/08/02 06:00 [entrez] AID - 10.1002/hipo.22991 [doi] PST - ppublish SO - Hippocampus. 2018 Nov;28(11):783-795. doi: 10.1002/hipo.22991.