Epigenetic programming by maternal behavior - PubMed (original) (raw)
doi: 10.1038/nn1276. Epub 2004 Jun 27.
Affiliations
- PMID: 15220929
- DOI: 10.1038/nn1276
Epigenetic programming by maternal behavior
Ian C G Weaver et al. Nat Neurosci. 2004 Aug.
Abstract
Here we report that increased pup licking and grooming (LG) and arched-back nursing (ABN) by rat mothers altered the offspring epigenome at a glucocorticoid receptor (GR) gene promoter in the hippocampus. Offspring of mothers that showed high levels of LG and ABN were found to have differences in DNA methylation, as compared to offspring of 'low-LG-ABN' mothers. These differences emerged over the first week of life, were reversed with cross-fostering, persisted into adulthood and were associated with altered histone acetylation and transcription factor (NGFI-A) binding to the GR promoter. Central infusion of a histone deacetylase inhibitor removed the group differences in histone acetylation, DNA methylation, NGFI-A binding, GR expression and hypothalamic-pituitary-adrenal (HPA) responses to stress, suggesting a causal relation among epigenomic state, GR expression and the maternal effect on stress responses in the offspring. Thus we show that an epigenomic state of a gene can be established through behavioral programming, and it is potentially reversible.
Comment in
- Mothering style and methylation.
Sapolsky RM. Sapolsky RM. Nat Neurosci. 2004 Aug;7(8):791-2. doi: 10.1038/nn0804-791. Nat Neurosci. 2004. PMID: 15280887 No abstract available.
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