Project description:The innate immune response relies on efficient, robust and fast protein signaling networks to relay information related to pathogen or viral detection. This communication is mediated primarily through protein-protein interactions and post-translational modifications (PTMs), events which are best characterized by mass spectrometry (MS)-based proteomics. This in-depth study uses MS to identify changes in protein signaling networks of Lipopolysaccharide (LPS)-stimulated human and mouse macrophages, at the level of single PTMs (via phosphorylation and ADP-ribosylation site ID) and protein complexes (via size exclusion chromatography and immunoprecipitation). The result is a curated meta-database of 6,475 proteins including 2,311 ADP-ribosylated proteins and 2,284 phosphoproteins present in LPS-stimulated macrophages. Follow up studies characterized the ASK protein complex – which appeared to dissociate upon LPS stimulation – and a complex which formed upon LPS stimulation and contained the poly(ADP-ribosyl) transferase PARP9 protein.
Project description:To identify the potential Nucleolin binding proteins, we performed co-immunoprecipitation assay in 12 h LPS-stimulated RAW 264.7 macrophages.
Project description:The aim of the current study was to investigate the response of in vitro differentiated trout macrophages, a primary cell culture system widely used in fish immunology research, to lipopolysaccharide (LPS) and to the analog viral ds(RNA) Poly I:C. To that end we have used a salmonid-specific microarray platform enriched with immune-related genes. The results clearly suggest that the molecular mechanisms involved in the response of macrophages to LPS and Poly (I:C) are specific in some signaling pathways related to cell communication, signal transduction and kinase cascades. Nevertheless, macrophages stimulated with bacterial or viral PAMPs also activate common transcription factors.
Project description:In this study, we compared active histone marks (trimethylation on lysine 4 on histone 3 (H3K4me3)) in LPS-stimulated macrophages and LPS/IC-stimulated macrophages using bone marrow derived murine macrophages using ChIP-seq approach.
Project description:proteome of LPS-stimulated macrophages in Il18-knockout mouse' liver and lung. proteome of LPS-stimulated macrophages in widetype mouse' liver and lung.
