Project description:We report the IFN-induced dynamics in murine splenic B cells. Male C57BL/6 mice were injected subcutaneously with 10,000U IFNa and spleens were removed at 90min. B cells were negatively isolated using magnetic beads and profiled for the chromatin configuration by ATAC-seq. Profilings of chromatin configuration by ATAC-seq (0 and 90min, biological duplicate for each).
Project description:ATAC-seq in murine naive B cells, germinal center B cells, and total B cells stimulated with LPS ex vivo and transduced with empty vector or Ocab (Pou2af1) expression vector.
Project description:We report the IFN-induced dynamics in murine splenic B cells. Male C57BL/6 mice were injected subcutaneously with 10,000U IFNa and spleens were removed at 90min. B cells were negatively isolated using magnetic beads and profiled for the chromatin configuration by ATAC-seq.
Project description:Memory B cells represent one of the pillar of humoral protection and are found in the circulation and secondary lymphoid organs several decades after initial pathogen or vaccine encounter. The exact cellular and biological mechanisms allowing long-term survival of quiescent cells in such a fluctuating microenvironment remain poorly understood. scRNA-seq analysis of long-lived Vaccinia-specific and total IgG+ memory B cells had helped us identify two subsets of quiescent switched memory B cells in the spleen of adult donors, separated by the expression of CR2(CD21). To better understand the relationship between these two resting splenic memory B cell subsets, we sorted CD21hiCD20hi and CD21intCD20int IgG+ memory B cells from the live IgD-CD27+IgG+CD20+CD3-CD14-CD16- compartment of the spleen of four organ donors, collected between 2015 and 2019. For all donors, both IgG+ memory B cell subsets were sorted alongside naïve B cells (IgD+CD27-CD38-CD24-CD20+CD3-CD14-CD16-). Assay for Transposase-Accessible Chromatin with high-throughput sequencing (ATAC-seq) was performed on 50000 cells of each sorted population, according to published methods (Buenrostro, Nature Methods, 2013, PMID: 24097267) and sent for library sequencing by Integragen (Evry, France). In parallel, RNA was extracted from remaining cells and sent for library preparation and sequencing by Integragen (Evry, France) (see related accession number).
Project description:Purpose: The goal of this study is to complare the transcitpional profiles of freshly isolated, murine splenic and hepatic memory B cells (B220+ CD73+) sorted as CD11b, CD11c double negative and CD11b, CD11c double positive cell populations induced by Ehrlichia muris infection.
Project description:DNA microarrays were used to profile gene expression in normal murine splenic cells vs. prion infected splenic cells with the aim of identifying host factors involved in prion propagation and/or useful as biomarkers for early diagnosis. Two condition experiment, prion infected murine splenic cells vs. normal murine splenic cells: 4 infected biological replicates, 2 control biological replicates, 2 technical replicates (dye-swaps) for each competitive hybridization. Samples were run on 4 different arrays: MPB Murine 16K BMAP-MSV printrun 7.1 microarray MPB Murine 16K BMAP-MSV printrun 9.1 microarray MPB Murine 32K Oligo printrun 4.1 microarray Agilent 4x44K Whole Mouse Genome