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- W2115910333 abstract "Abstract NLRP2 has been shown to inhibit the NF-κB signaling pathway, and thus may contribute to modulate the inflammatory response, where NF-κB plays a major role. In this study, we report that expression of NLRP2 is induced upon differentiation of CD34+ hemopoietic progenitors into granulocyte or monocyte/macrophages. We also found that NLRP2 was up-regulated following differentiation of mesenchymal stem cells toward adipocytes. Notably, stimulation of HEK293T cells with TNF-α or overexpression of the p65 subunit of NF-κB resulted in up-regulation of NLRP2 and the formation of NF-κB-NLRP2 promoter complexes. Moreover, ectopic expression of p65 but not of other transcriptional regulators induced transactivation of the NLRP2 promoter. Thus, NLRP2 may control NF-κB activation through a regulatory loop. Nucleotide changes within the NACHT domain of other NLRP proteins have been associated with hereditary fever syndromes and chronic inflammatory diseases. We identified five single nucleotide polymorphisms present in the NACHT domain of NLRP2 by sequencing genomic DNA from 319 healthy controls. The frequencies of the rare alleles varied between 0.2 and 10%. Of note, one of these variants, I352S was unable to block the transcriptional activity of NF-κB and the formation of NF-κB-DNA-binding complexes following stimulation with TNF-α. Overall, our findings provide molecular insight into the expression of NLRP2 by NF-κB and suggest that a polymorphism within the NACHT domain of NLRP2 may contribute to the amplification of inflammatory responses due to a reduction of inhibitory signals on the NF-κB pathway." @default.
- W2115910333 created "2016-06-24" @default.
- W2115910333 creator A5050077300 @default.
- W2115910333 creator A5057793191 @default.
- W2115910333 creator A5090148905 @default.
- W2115910333 date "2007-12-15" @default.
- W2115910333 modified "2023-10-16" @default.
- W2115910333 title "NLRP2, an Inhibitor of the NF-κB Pathway, Is Transcriptionally Activated by NF-κB and Exhibits a Nonfunctional Allelic Variant" @default.
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- W2115910333 doi "https://doi.org/10.4049/jimmunol.179.12.8519" @default.
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