Project description:Following infection with LCMV, CD4+ SMARTA TCR transgenic cells (specific for the gp61-80 epitope of the LCMV glycoprotein) rapidly expand, become effector cells, and go on to form a long-lived memory population. Following infection with a recombinant Listeria monocytogenes expressing the LCMV epitope gp61-80, SMARTA cells also expand but display defective effector differentiation and fail to form memory. In an attempt to understand the signals required for CD4 T cell memory differentiation, we compared gene expression by SMARTA cells at the peak of the primary response following either Lm-gp61 or LCMV infection. Keywords: response to LCMV or Lm-gp61 infection
Project description:Following infection with LCMV, CD4+ SMARTA TCR transgenic cells (specific for the gp61-80 epitope of the LCMV glycoprotein) rapidly expand, become effector cells, and go on to form a long-lived memory population. Following infection with a recombinant Listeria monocytogenes expressing the LCMV epitope gp61-80, SMARTA cells also expand but display defective effector differentiation and fail to form memory. In an attempt to understand the signals required for CD4 T cell memory differentiation, we compared gene expression by SMARTA cells at the peak of the primary response following either Lm-gp61 or LCMV infection. Experiment Overall Design: SMARTA cells were purified at day 7 post-infection with either LCMV or Lm-gp61. SMARTA cells were sorted on the basis of Thy1.1 expression using a FACSAria. Cells were sorted through the machine twice to enhance purity. Two biological replicates of each group are provided. Each replicate represents the results of SMARTA pooled from three animals.
Project description:Analysis of in vivo antigen-specific (LCMV-specific, SMARTA TCR transgenic) follicular helper CD4 T cells (CXCR5high),versus non-follicular helper CD4 T cells (CXCR5low), eight days after viral infection. A paper including data analysis of these experiments has been accepted for publication (Robert J. Johnston et al. Bcl6 and Blimp-1 are reciprocal and antagonistic regulators of follicular helper CD4 T cell differentiation). Experiment Overall Design: Analysis of in vivo antigen-specific (LCMV-specific, SMARTA TCR transgenic) follicular helper CD4 T cells (CXCR5high), versus non-follicular helper CD4 T cells (CXCR5low), eight days after viral infection.
Project description:Trascriptional analysis of CD2 hi and CD25 lo CD4+ effector T cells during acute viral infection. SMARTA cells were transferred into B6 mice, followed by infection with LCMV. At day 5 post-infection, CD25 hi and CD25 lo SMARTA cells were isolated from the spleen by FACS. Consistent with our prior studies showing that CD25 lo early effector cells give rise to both Tfh effector cells and memory T cells, we observed gene expression in the CD25 lo population consistent with Tfh differentiation. Conversely, CD25 hi effector cells expressed markers consistent with Th1 differentiation and short-term survival.
Project description:Comparison of chromatin accessibility between WT and tamoxifen-inducible deletion of TRAF3 (iTraf3−/−) SMARTA TFH cells during LCMV armstrong infection
Project description:This study is part of the immgenT Open Source Project, specifically from IGT36, which focuses on a pan-organ and time course analysis of T cells in acute LCMV (Armstrong) infection at day 7 post-infection. The dataset includes T cells isolated from multiple organs: spleen, prostate, submandibular gland, bone marrow, mesenteric lymph node, small intestine epithelium, small intestine lamina propria, lung, and mediastinal lymph node. 7-week-old male C57BL/6J mice infected intraperitoneally with 2×10^5 PFU LCMV Armstrong, and T cells were analyzed at 60 days post-infection (dpi). The study includes both endogenous T cells and adoptively transferred P14 and SMARTA TCR transgenic T cells. Mice received IV 100,000 SMARTA (CD45.1.2) and 50,000 P14 (CD45.1) T cells one day before infection.
Project description:This study is part of the immgenT Open Source Project, specifically from IGT38, which focuses on a pan-organ and time course analysis of T cells in acute LCMV (Armstrong) infection at day 30 post-infection. The dataset includes T cells isolated from multiple organs: spleen, prostate, submandibular gland, bone marrow, mesenteric lymph node, small intestine epithelium, small intestine lamina propria, lung, and mediastinal lymph node. 7-week-old male C57BL/6J mice infected intraperitoneally with 2×10^5 PFU LCMV Armstrong, and T cells were analyzed at 60 days post-infection (dpi). The study includes both endogenous T cells and adoptively transferred P14 and SMARTA TCR transgenic T cells. Mice received IV 100,000 SMARTA (CD45.1.2) and 50,000 P14 (CD45.1) T cells one day before infection.
Project description:This study is part of the immgenT Open Source Project, specifically from IGT40, which focuses on a pan-organ and time course analysis of T cells in acute LCMV (Armstrong) infection at day 60 post-infection. The dataset includes T cells isolated from multiple organs: spleen, prostate, submandibular gland, bone marrow, mesenteric lymph node, small intestine epithelium, small intestine lamina propria, lung, and mediastinal lymph node. 7-week-old male C57BL/6J mice infected intraperitoneally with 2×10^5 PFU LCMV Armstrong, and T cells were analyzed at 60 days post-infection (dpi). The study includes both endogenous T cells and adoptively transferred P14 and SMARTA TCR transgenic T cells. Mice received IV 100,000 SMARTA (CD45.1.2) and 50,000 P14 (CD45.1) T cells one day before infection.
Project description:Comparison of transcriptome between early Tfh vs. early Th1 cells Blimp-1-YFP LCMV gp specific TCRtg Smarta cells were transferred into B6 mice, which were then infected with LCMV Armstrong. On day 3 after infection, splenocytes were stained to sort Blimp-1-YFP+IL-2Ra+ Th1 cells or Blimp-1-YFP-IL-2Ra- Tfh cells for RNAseq analysis. Contributor: LIAI RNAi center (LIAI)