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Tbet regulates the transcriptional programming of Be1 B cells.

ABSTRACT: 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.

ORGANISM(S): Mus musculus

PROVIDER: GSE83697 | GEO | 2019/04/29

REPOSITORIES: GEO

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Tbet regulates the accessible chromatin of Be1 B 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.

2019-04-29 | GSE118984 | GEO

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Tbet regulates the accessible chromatin of Be1 B cells

Project description:Tbet regulates the accessible chromatin of Be1 B cells

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Expression data from Tbet+ and Tbet- Memory B cells

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. NaÃ¯ve, 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

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Be1 and Be2 B cells are transcriptionally distinct

Project description:B cells cultured in the presence of Th1 CD4 T cells (Be1) or Th2 CD4 T cells (Be2) lead to distinct phenotypic outcomes. To determine when the phenotypic differences emerged, IgD positive and IgD negative Be1 and Be2 cells were isolated from cultures derived from 3 independent donors and RNA-seq performed. These data define the transcriptional differences of Be1 and Be2 cells ad distinct differentiation stages and show that Be1 B cells contain a pre-ASC signature that is absent from Be2 B cells.

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Tbet-Eomes

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Kinetics of Tbet+ B cells during LCMV 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.

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Kinetics of Tbet+ B cells during LCMV infection

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Expression data from Tbet+ and Tbet- Memory B cells

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 important 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

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