Project description:Monocytes and monocyte derived macrophages, besides natural killer (NK) cells, are crucial for elimination of senescent cells. There is evidence that TLR2/6 together with the lipid receptor CD36 may be the pattern recognition receptor that are most involved in the sensing of epitopes connected to cellular aging, senescence and severe cellular distress. Additionally, the interplay of these scavenger receptors is required for uptake of TLR2/6 agonist FSL-1. Therefore, we investigated whether lysophospholipids would induce or interfere with (TLR2/6 mediated) gene regulation in U937 monocytes. Cells were or were not pre-treated with lysophospholipids (10µM) for 1 hour and then stimulated with the TLR2/6 ligand (1µg/ml) for 2 hours.
Project description:ZXDC1 augments the expression of various markers of monocyte/macrophage differentiation when over-expressed in the U937 cell line treated with the phorbol ester PMA. Likewise, knockdown of ZXDC1 restricts the induced expression of these markers. We sought to identify specfic gene targets of ZXDC1 during the process of monocyte/macrophage differentiation in U937 by performing gene expression profiling in cells exhibiting reduced expression of ZXDC1 compared to controls. We used microarray to identify genes regulated by ZXDC during PMA-induced differentiation of U937 monoblasts towards a monocyte/macrophage phenotype
Project description:ZXDC1 augments the expression of various markers of monocyte/macrophage differentiation when over-expressed in the U937 cell line treated with the phorbol ester PMA. Likewise, knockdown of ZXDC1 restricts the induced expression of these markers. We sought to identify specfic gene targets of ZXDC1 during the process of monocyte/macrophage differentiation in U937 by performing gene expression profiling in cells exhibiting reduced expression of ZXDC1 compared to controls. We used microarray to identify genes regulated by ZXDC during PMA-induced differentiation of U937 monoblasts towards a monocyte/macrophage phenotype An inducible shRNAmir (Tet-On) cell line was established in the U937 background that displayed significant, reproducible, and doxycycline inducible knockdown of ZXDC1. Using this cell line, we created four experimental groups to identify gene targets of ZXDC1 during PMA-induced differention towards a monocyte/macrophage phenotype: Vehicle alone; Vehicle+Doxycycline; PMA alone; PMA+Doxycycline. Each independent group was used for RNA extraction and hybridization on Affymetrix microarray chips.
Project description:ChIP-seq analysis reveals widespread H3[delta]N distribution across the genome in U937 cells, and primary monocytes, which is largely absent in fully differentiated macrophages.
Project description:Transcriptional profiling of U937 miR-194-5p (UmiR-194-5p) vs U937 miR-194-5p (UmiR-194-5p) treated with MS275 (SNDX 275;Entinostat) for 24 h at 5uM concetration
Project description:Transcriptional profiling of U937 miR-194-5p (UmiR-194-5p) vs U937 miR-194-5p (UmiR-194-5p) treated with SAHA (Vorinostat; suberoylanilide hydroxamic acid) for 24 h at 5uM concetration
Project description:Single cell proteomics data containing quantitative information of THP1 and U937 monocytes that were treated or not to undergo a macrophage-like differentiation. Dataset also contains "Mix" samples generated by mixing in equal proportions THP1 and U937 peptides in the single-cell range or by processing together 1 THP1 cell and 1 U937 cell. Samples run on the Orbitrap Fusion Lumos Tribrid and the Exploris 240 were acquired by the de Duve institute, UCLouvain. Samples run on the timsTOF SCP were acquired by the GIGA institute, ULiège.