HDAC Inhibitor Sodium Butyrate-Mediated Epigenetic Regulation Enhances Neuroprotective Function of Microglia During Ischemic Stroke

作者: Radhika Patnala , Thiruma V Arumugam , Neelima Gupta , S Thameem Dheen

DOI: 10.1007/S12035-016-0149-Z

关键词:

摘要: Cerebral ischemia leads to neuroinflammation and activation of microglia which further contribute stroke pathology. Understanding regulation microglial will aid in the development therapeutic strategies that mitigate microglia-mediated neurotoxicity neuropathologies, including ischemia. In this study, we investigated epigenetic by studying histone modification 3-lysine 9-acetylation (H3K9ac) its deacetylase (HDAC) inhibitors. vitro analysis activated showed HDAC inhibitor, sodium butyrate (SB), alters H3K9ac enrichment transcription at promoters pro-inflammatory (Tnf-α, Nos2, Stat1, Il6) anti-inflammatory (Il10) genes while inducing expression downstream IL10/STAT3 pathway. an experimental mouse (C57BL/6NTac) model middle cerebral artery occlusion (MCAO), observed SB mediates neuroprotection epigenetically regulating inflammatory response, via downregulating mediators, TNF-α NOS2, upregulating mediator IL10, microglia. Interestingly, levels were found be upregulated distributed cortex, striatum, hippocampus MCAO mice. A similar upregulation was detected lipopolysaccharide (LPS)-activated Wistar rat brain, indicating is consistently associated with vivo. Altogether, these results show evidence inhibition being a promising molecular switch modify behavior from could neuroinflammation.

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