Project description:Comparison between naïve CD4+ mouse T cells and either bona fide IFNg+ and IFNg- CD4+ T cells after culturing under Th1 polarizing conditions in the presence of either the epigenetic probe SGC0946 or SGC0649
Project description:Purpose: To evaluate transcriptome-wide alterations in CD4+ T cells cultured under Th1-polarizing conditions in the absence of the Ikaros zinc finger transcription factor Eos via RNA-seq analysis.
Project description:Suppressive regulatory T cell (Treg) differentiation is controlled by diverse immunometabolic signaling pathways and intracellular metabolites. Here we show that cell-permeable α-ketoglutarate (αKG) alters the DNA methylation profile of naive CD4 T cells activated under Treg polarizing conditions, markedly attenuating FoxP3+ Treg differentiation and increasing inflammatory cytokines.
Project description:The goal of this study was to determine the effects of CKBA on mRNA expression of naive mouse CD4+ T cells under TH17-polarizing conditions in vitro.
Project description:Effective immunity to viruses such as influenza and SARS-CoV-2 requires the generation of CD4+ T cell subsets that coordinate complementary aspects of the immune response. These include T follicular helper (TFH) and T helper 1 (TH1) cells, which promote humoral and cell-mediated helper responses, respectively. A third population, CD4+ cytotoxic T lymphocytes (CD4-CTLs) facilitates clearance of infection via mechanisms normally associated with CD8+ T cells, including perforin-mediated destruction of infected cells. Here, we identify the transcription factor Aiolos as a reciprocal regulator of TFH and CD4-CTL responses. We demonstrate that Aiolos deficiency compromises TFH differentiation and antibody production during influenza infection. Conversely, we find that CD4+ T cells acquire a cytotoxic-like program in the absence of Aiolos, including increased expression of the CTL-associated transcription factors Eomes and Blimp-1. We further show that while Aiolos positively regulates the TFH transcriptional regulators Zfp831, Tcf-1 and Bcl-6, it also directly represses expression of IL-2Ra and IL-2/STAT5-driven expression of the cytotoxic gene program. Thus, our findings identify Aiolos as a pivotal regulator of TFH and CD4-CTL differentiation and highlight its potential as a therapeutic target for the manipulation of CD4+ T cell humoral and cytotoxic responses.
Project description:Effective immunity to viruses such as influenza and SARS-CoV-2 requires the generation of CD4+ T cell subsets that coordinate complementary aspects of the immune response. These include T follicular helper (TFH) and T helper 1 (TH1) cells, which promote humoral and cell-mediated helper responses, respectively. A third population, CD4+ cytotoxic T lymphocytes (CD4-CTLs) facilitates clearance of infection via mechanisms normally associated with CD8+ T cells, including perforin-mediated destruction of infected cells. Here, we identify the transcription factor Aiolos as a reciprocal regulator of TFH and CD4-CTL responses. We demonstrate that Aiolos deficiency compromises TFH differentiation and antibody production during influenza infection. Conversely, we find that CD4+ T cells acquire a cytotoxic-like program in the absence of Aiolos, including increased expression of the CTL-associated transcription factors Eomes and Blimp-1. We further show that while Aiolos positively regulates the TFH transcriptional regulators Zfp831, Tcf-1 and Bcl-6, it also directly represses expression of IL-2Ra and IL-2/STAT5-driven expression of the cytotoxic gene program. Thus, our findings identify Aiolos as a pivotal regulator of TFH and CD4-CTL differentiation and highlight its potential as a therapeutic target for the manipulation of CD4+ T cell humoral and cytotoxic responses.
Project description:Identification of intrathymic Eomes+ natural Th1 cells creates a novel idea that there is more than one way for the generation of innate CD4 T cells. To more deeply characterize this type of innate T cells, we compared the gene expression profile between nTh1 cells generated in CIITAtg mice and classic Th1 cells differentiated from naive CD4 T cells in Th1-polarizing condition.
Project description:Naive CD4+ CD62L+ CD25- T cells were differentiated under TH1 and TH2 conditions for 7 days, restimulated with anti-CD3 and anti-CD28 for 24h and sorted for IFN-gamma (TH1) and IL-4 (TH2) production using cytokine secretion assays.