Project description:We have performed analyses of murine primary bone marrow derived neutrophils challenged with either ultra-low dose or high dose of LPS. Neutrophils can be differentially programmed to distinct states by varying dosages of LPS. Purified bone marrow neutrophils were treated with PBS, 100 pg/ml LPS or 100 ng/ml LPS overnight, and harvested for scRNAseq analysis to examine their profiles of gene expression.
Project description:We have generated immune-enhancing neutrophils by culturing murine primary bone marrow derived neutrophils with either super-low dose of LPS. Immune-enhancing neutrophils preferentially express co-stimulatory molecules such as CD74, CD44 and CD86, and exhibit reduced expression of CD11b. Purified bone marrow neutrophils were treated with PBS or 100 pg/ml LPS overnight in the presence of GM-CSF, and harvested for scRNAseq analysis to examine their profiles of gene expression.
Project description:Murine neutrophils derived from bone marrow of wild-type and cPLA2alpha-knockin mice (with the C1P interaction site of cPLA2alpha ablated) proteomes were compared
Project description:Neutrophils are the most abundant white blood cells in humans and constitute one of the first lines of defense in the innate immune response. Neutrophils are extremely short-lived cells, which survive less than a day after reaching terminal differentiation. Thus, little is known about how organismal aging, rather than the daily cellular aging process, may impact neutrophil biology. In addition, accumulating evidence suggests that both immunity and organismal aging are extremely sex-dimorphic. Here, we describe a multi-omic resource of mouse primary bone marrow neutrophils from young and old female and male animals, at the transcriptomic, metabolomic and lipidomic levels. Importantly, we identify widespread age-related and sex-dimorphic regulation of ‘omics’ in neutrophils, specifically regulation of chromatin metabolism. We leverage machine-learning and identify candidate molecular drivers of age-related and sex-dimorphic transcriptional regulation of neutrophils. We leverage our resource to predict increased levels/release of neutrophil elastase in male mice. To date, this dataset represents the largest multi-omic resource for the study of neutrophils across biological sex and ages. This resource identifies molecular states linked to neutrophil characteristics linked to organismal age or sex, which could be leveraged to improve immune responses across individuals.
Project description:LYN kinase is a tyrosine kinase, that regulates cellular homeostasis in a context-specific manner. Our group could show, that its expression in the leukemic microenvironment of chronic lymphocytic leukemia contributes to disease progression (Nguyen PH et al.; Cancer Cell; 2016). To analyze the effect of LYN kinase on the leukemia supportive phenotype of the bone marrow stromal cell line HS-5, we generated single cell clones of LYN deficient stroma cells. These cells were analyzed in a Multi-Omic approach, including ARNA-Seq of stromal cells after 72h of coculture with primary human chronic lymphocytic leukaemia (CLL) samples.
Project description:RNA expression in Srf wildtype and knockout primary bone marrow derived mature neutrophils was determined via RNA sequencing Mature Gr1 high, 7/4 high, SSC high neutrophils were sorted from Srf WT and KO mouse bone marrow and submitted for RNA sequencing
Project description:LYN kinase is a tyrosine kinase, that regulates cellular homeostasis in a context-specific manner. Our group could show, that its expression in the leukemic microenvironment of chronic lymphocytic leukemia contributes to disease progression (Nguyen PH et al.; Cancer Cell; 2016). To analyze the effect of LYN kinase on the leukemia supportive phenotype of the bone marrow stromal cell line HS-5, we generated single cell clones of LYN deficient stroma cells. These cells were analyzed in a Multi-Omic approach, including ATAC-Seq analysis of adapted epigenetic regulations.
Project description:LYN kinase is a tyrosine kinase, that regulates cellular homeostasis in a context-specific manner. Our group could show, that its expression in the leukemic microenvironment of chronic lymphocytic leukemia contributes to disease progression (Nguyen PH et al.; Cancer Cell; 2016). To analyze the effect of LYN kinase on the leukemia supportive phenotype of the bone marrow stromal cell line HS-5, we generated single cell clones of LYN deficient stroma cells. These cells were analyzed in a Multi-Omic approach, including microarray based analysis of the transcriptome.