Project description:In order to assess whether differences in the transcriptomic profile of human tumor-associated macrophages vs. alveolar macrophages from adjacent non-tumor-tissue (GSE162669) were caused by factors secreted by tumor cells, primary human monocyte-derived macrophages (MDMs) were polarized towards a TAM-like phenotype by cultivating them in tumor cell-conditioned medium. A genome-wide comparison by bulk RNA-Seq confirmed a high similarity of ex vivo TAMs and in vitro polarized TAM-like macrophages. Other polarization schemes (M1: LPS/IFN-gamma, M2: IL10 or IL4) did not lead to similar transcriptomic changes. For details, see Hoppstädter et al., 2021 (doi:10.1016/j.ebiom.2021.103578).
Project description:The study of the roles of macrophages in the microenvironment of cancer cells (tumor-associated macrophages, TAM) has gained deep insight over the recent years. Here, we describe gene expression profile of chronic lymphocytic leukemia (CLL)-associated macrophages, also called nurse-like cells (NLC), derived from in vitro co-cultures system. We define these NLC as M2-oriented, TAM-like specific subset of macrophages, with very few inter-individual variations in gene expression profiles. CLL patients PBMC were isolated and cultured for 15 days in vitro. NLC were then isolated, mRNA were purified and hybridized on Affymetrix U133 plus 2.0 chips. Data were normalized by RMA5
Project description:ATAC-seq profiling of Nfat5 KO and wild type macrophages derived from bone marrow (primary cells), treated or not with Lipopolysaccharide (LPS).
