NDLI: Stress-induced epigenetic transcriptional memory of acetylcholinesterase by HDAC4

Content Provider	PubMed Central
Author	Sailaja, Badi Sri Cohen-carmon, Dorit Zimmerman, Gabriel Soreq, Hermona Meshorer, Eran
Abstract	Stress induces long-lasting changes in neuronal gene expression and cholinergic neurotransmission, but the underlying mechanism(s) are incompletely understood. Here, we report that chromatin structure and histone modifications are causally involved in this transcriptional memory. Specifically, the AChE gene encoding the acetylcholine-hydrolyzing enzyme acetylcholinesterase is known to undergo long-lasting transcriptional and alternative splicing changes after stress. In mice subjected to stress, we identified two alternative 5′ exons that were down-regulated after stress in the hippocampus, accompanied by reduced acetylation and elevated trimethylation of H3K9 at the corresponding promoter. These effects were reversed completely by daily administration of the histone deacetylase (HDAC) inhibitor sodium butyrate for 1 wk after stress. H3K9 hypoacetylation was associated with a selective, sodium butyrate-reversible promoter accumulation of HDAC4. Hippocampal suppression of HDAC4 in vivo completely abolished the long-lasting AChE-related and behavioral stress effects. Our findings demonstrate long-lasting stress-inducible changes in AChE's promoter choices, identify the chromatin changes that support this long-term transcriptional memory, and reveal HDAC4 as a mediator of these effects in the hippocampus.
Related Links	http://dx.doi.org/10.1073/pnas.1209990110
Starting Page	3687
File Format	PDF
ISSN	00278424
e-ISSN	10916490
Journal	Proceedings of the National Academy of Sciences of the United States of America
Issue Number	52
Volume Number	109
Language	English
Publisher	National Academy of Sciences
Publisher Date	2012-12-26
Access Restriction	Open
Rights Holder	National Academy of Sciences
Subject Keyword	General Research in Higher Education
Content Type	Text
Resource Type	Article
Subject	Multidisciplinary

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
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3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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