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Ordered transcriptional factor recruitment and epigenetic regulation of tnf-alpha in necrotizing acute pancreatitis.

Authors: Sandoval, J  Pereda, J  Rodriguez, JL  Escobar, J  Hidalgo, J  Joosten, LA  Franco, L  Sastre, J  Lopez-Rodas, G 
Citation: Sandoval J, etal., Cell Mol Life Sci. 2010 May;67(10):1687-97. doi: 10.1007/s00018-010-0272-3. Epub 2010 Feb 4.
Pubmed: (View Article at PubMed) PMID:20130956
DOI: Full-text: DOI:10.1007/s00018-010-0272-3

Tauhe expression of the critical initiator cytokine TNF-alpha was strongly upregulated in vivo in acute necrotic pancreatitis (AP) in rodents and in vitro in TNF-alpha activated acinar AR42J cells. Upregulation of tnf-alpha, inos, icam-1 and il-6 occurred both in TNF-alpha receptor 1 and 2 knock-out mice, but not in TNF-alpha knock-out mice, in cerulein-induced acute pancreatitis. Chromatin immunoprecipitation analysis showed that transcriptional factors (ELK-1, SP1, NF-kappaB and EGR-1) and chromatin modification complexes (HDAC1, HDAC2, GCN5, PCAF and CBP) were recruited and/or released from the promoter in a strictly ordered mechanism. Activation of tnf-alpha gene was also accompanied by an ordered increased level of histone H3K9, H3K14 and H3K18-acetylation and H3K4 methylation, as well as H4K5 acetylation. A better knowledge of the molecular mechanisms that control tnf-alpha gene regulation will provide deeper understanding of the initiation and development of the inflammatory processes occurring in acute pancreatitis triggered by TNF-alpha cytokine.

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CRRD Object Information
CRRD ID: 9590236
Created: 2014-11-20
Species: All species
Last Modified: 2014-11-20
Status: ACTIVE



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RGD is funded by grant HL64541 from the National Heart, Lung, and Blood Institute on behalf of the NIH.