Project description:T-bet and Eomes are related T-box transcription factors that control NK cell development. This study was designed to understand the specific roles of Eomes and T-bet in regulating gene expression. RNAseq data were generated for immature (CD11b- CD27+) and mature (CD11b+ CD27-) NK cells from T-bet KO (Tbet Ho) or control mice (Tbet WT) or from Eomes KO (Eomes Ho) or control mice (NK-Cre). Three samples were generated for each condition (Tri 1, 2, 3).
Project description:The role of antibody and B cells in preventing infection is established. In contrast, the role of B cell responses in containing chronic infections remains poorly understood. IgG2a (IgG1 in humans) can prevent acute infections and T-bet promotes IgG2a isotype switching. However, whether IgG2a and B cell-expressed T-bet influence the host-pathogen balance during persisting infections is unclear. Here we demonstrate that B cell specific loss of T-bet prevents control of persisting viral infection. T-bet in B cells not only controlled IgG2a production, but also mucosal localization, proliferation, glycosylation, and a broad transcriptional program. T-bet controlled a broad antiviral program in addition to IgG2a since T-bet in B cells was imÂportant even in the presence of virus-specific IgG2a. Our data supports a model in which T-bet is a universal controller of antiviral immunity across multiple immune lineages. Naïve, Tbet+, and Tbet- Memory B cells were assayed for gene expression Tbet GFP reporter mice were infected with LCMV clone 13, and target B cell populations were sorted from splenocytes at day 10 post-infection
Project description:Inflammatory (B220+ CD19+ CD44+ CD11c+ Tbet-AmCyanhi) B cells were sorted from female Tbet-AmCyan reporter mice at day 8, 10, and 15 post infection with LCMV-Armstrong. RNA-seq was employed to assess transcriptional changes in inflammatory B cells throughout the infection.
Project description:Inflammatory (B220+ CD19+ CD44+ CD11c+ Tbet-AmCyanhi) B cells were sorted from female Tbet-AmCyan reporter mice at day 8, 10, and 15 post infection with LCMV-Armstrong. RNA-seq was employed to assess transcriptional changes in inflammatory B cells throughout the infection.
Project description:To investigate the role of Tbet in B cell differentiation to "effector-like" antibody secreting cells (ASC's) we utilized an ex vivo culture system to differentiate B cells (Be1 cells) in the presence of Th1 polarized T cells. To determine the role of Tbet in Be1 cell differentiation we performed RNA-seq on Wt Be1 and Tbet negative (TbetNeg) Be1 cells. Collectively, these data show that T-bet serves as master regulator for the Be1 cell fate and is required for induction of genes required for ASC differentiation in Be1 cells.
Project description:To investigate the role of Tbet in B cell differentiation to "effector-like" antibody secreting cells (ASC's) we utilized an ex vivo culture system to differentiate B cells in the presence of Th1 (Be1) or Th2 (Be2) polarized T cells. To determine the role of Tbet in Be1 cell differentiation we performed ATAC-seq on Wt Be1 and Tbet negative (TbetNeg) Be1 cells and Wt Be2 and Tbet negative (TbetNeg) Be2 cells. Collectively, these data show that T-bet serves as master regulator for the Be1 cell fate and is required to program chromatin accessibility during ASC differentiation in Be1 cells.