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- W2152363670 abstract "Chronic inflammation underscores the pathogenesis of a range of human diseases. Lipopolysaccharide (LPS) elicits strong pro-inflammatory response in macrophages via the transcription factor NF-κB. The epigenetic mechanism underlying LPS-induced pro-inflammatory transcription is not completely appreciated. Herein we describe a role for myocardin related transcription factor A, or MRTF-A, in this process. MRTF-A over-expression potentiated while MRTF-A silencing dampened NF-κB dependent pro-inflammatory transcription. MRTF-A deficiency also alleviated the synthesis of pro-inflammatory mediators in a mouse model of colitis. LPS promoted the recruitment of MRTF-A to the promoters of pro-inflammatory genes in a NF-κB dependent manner. Reciprocally, MRTF-A influenced the nuclear enrichment and target binding of NF-κB. Mechanistically, MRTF-A was necessary for the accumulation of active histone modifications on NF-κB target promoters by communicating with the histone H3K4 methyltransferase complex (COMPASS). Silencing of individual members of COMPASS, including ASH2, WDR5, and SET1, down-regulated the production of pro-inflammatory mediators and impaired the NF-κB kinetics. In summary, our work has uncovered a previously unknown function for MRTF-A and provided insights into the rationalized development of anti-inflammatory therapeutic strategies." @default.
- W2152363670 created "2016-06-24" @default.
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- W2152363670 date "2014-01-01" @default.
- W2152363670 modified "2023-09-29" @default.
- W2152363670 title "MRTF-A mediates LPS-induced pro-inflammatory transcription by interacting with the COMPASS complex" @default.
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- W2152363670 doi "https://doi.org/10.1242/jcs.152314" @default.
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