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Chromatin-bound RNA and the Neurobiology of Psychiatric Disease #MMPMID23831425
Tushir JS; Akbarian S
Neuroscience 2014[Apr]; ä (ä): 131-41 PMID23831425show ga
A large, and still rapidly expanding literature on epigenetic regulation in the nervous system has provided fundamental insights into the dynamic regulation of DNA methylation and post-translational histone modifications in the context of neuronal plasticity in health and disease. Remarkably, however, very little is known about the potential role of chromatin-bound RNAs, including many long non-coding transcripts and various types of small RNAs. Here, we provide an overview on RNA-mediated regulation of chromatin structure and function, with focus on histone lysine methylation and psychiatric disease. Examples of recently discovered chromatin-bound long non-coding RNAs important for neuronal health and function include the Brain-derived Neurotrophic Factor antisense transcript (Bdnf-AS) which regulates expression of the corresponding sense transcript, and LOC389023 which is associated with human-specific histone methylation signatures at the chromosome 2q14.1 neurodevelopmental risk locus by regulating expression of DPP10, an auxillary subunit for voltage-gated K(+) channels. We predict that the exploration of chromatin-bound RNA will significantly advance our current knowledge base in neuroepigenetics and biological psychiatry.