Project description:To evaluate the consequences of RBP-J loss of function in blood monocyte subsets, we sequenced RNA of blood Ly6Chi monocyte and Ly6Clo monocyte from WT and RBP-Jfl/fl Lyz2-Cre mice.
Project description:To study the regulation of Lepr on transcriptome in WT and Lepr KO AMs under resting state and after LPS stimulation, Lepr-sufficient (Lepr+/+, Lyz2-Cre) and Lepr-deficient (Leprfl/fl, Lyz2-Cre) alveolar macrophages (AMs) were isolated by collecting BALF. Lipopolysaccharide (LPS) was added in vitro for 1h or cells were left untreated. Total RNA was extracted for deep sequencing. Gene expression in WT and Lepr KO cells were analyzed.
Project description:RNA-Seq to profile transcriptomes in colonic macrophages from Tle3KO (Tle3fl/fl, Lyz2-Cre), Tle4KO (Tle4fl/fl, Lyz2-Cre) and WT (Lyz2-Cre) mice
Project description:Monocytes comprise two major subsets, Ly6Chi classical monocytes and Ly6Clo non-classical monocytes. Notch2 signaling in Ly6Chi monocytes triggers transition to Ly6Clo monocytes, which require Nr4a1, Bcl6, Irf2 and Cebpb. By comparison, less is known about transcriptional requirements for Ly6Chi monocytes. We find transcription factor CCAAT/enhancer-binding protein alpha (C/EBPα) is highly expressed in Ly6Chi monocytes, but down-regulated in Ly6Clo monocytes. A few previous studies described the requirement of C/EBPα in the development of neutrophils and eosinophils. However, role of C/EBPα for in vivo monocyte development has not been understood. We deleted the Cebpa +37 kb enhancer in mice, eliminating hematopoietic expression of C/EBPα, reproducing the expected neutrophil defect. Surprisingly, we also discovered a severe and selective loss of Ly6Chi monocytes, while preserving Ly6Clo monocytes. We find that BM progenitors from Cebpa +37–/– mice rapidly progress through the cMoP stage to develop directly into Ly6Clo monocytes even in the absence of Notch2 signaling. These results identify a previously unrecognized role for C/EBPα in maintaining Ly6Chi monocyte identity.
Project description:RBP-J is a master transcriptional factor of Notch signaling, which plays important roles in developmental processes as well as regulating macrophage-mediated inflammatory responses. However, the regulation of RBP-J on miRNAs are less studied. So we sequenced microRNAs from BMDMs derived from the LyZ2 Cre control (WT) and RBP-J conditional knockout mice (RBP-J KO; Rbpjf/f LyZ2 Cre) to address the roles of RBP-J on regulating miRNAs in macrophages.
Project description:C57BL/6 J mice were subjected to ligation of the left anterior descending coronary artery. Ly6Chi macrophages and Ly6Clo macrophages were collected from infarcted hearts at 3 days after MI.
Project description:RNAseq to profile transcriptomes in bone marrow-derived macrophages from Nelfb KO(Nelfbfl/fl, Lyz2-Cre) and WT(Nelfb+/+,Lyz2-Cre) mice