Lasting epigenetic influence of early-life adversity on the BDNF gene.
Lasting epigenetic influence of early-life adversity on the BDNF gene.
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DOI:
10.1016/j.biopsych.2008.11.028
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发表时间:
2009-05-01
影响因子:
10.6
通讯作者:
Sweatt, J. David
中科院分区:
文献类型:
--
作者:
Roth, Tania L.;Lubin, Farah D.;Funk, Adam J.;Sweatt, J. David
关键词:
Childhood maltreatment and early trauma leave lasting imprints on neural mechanisms of cognition and emotion. Using a rat model of infant maltreatment by a caregiver, we investigated whether early-life adversity leaves lasting epigenetic marks at the Brain-derived Neurotrophic Factor (BDNF) gene in the CNS. During the first postnatal week, we exposed infant rats to stressed caretakers that predominately displayed abusive behaviors. We then assessed DNA methylation patterns and gene expression throughout the life span, as well as DNA methylation patterns in the next generation of infants. Early maltreatment produced persisting changes in methylation of BDNF DNA that caused altered BDNF gene expression in the adult prefrontal cortex. Furthermore, we observed altered BDNF DNA methylation in offspring of females that had previously experienced the maltreatment regimen. These results highlight an epigenetic molecular mechanism potentially underlying lifelong and transgenerational perpetuation of changes in gene expression and behavior incited by early abuse and neglect.
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