Project description:Goal of this study was to compare transcriptional changes of in vivo (MOG/CFA) activated 2D2 T cells in the absence or presence of NIK
Project description:An analysis of 2D2-WT and 2D2-HDAC1-cKO mice indicates an important function of HDAC1 in regulating autoimmune diseases, in particular experimental autoimmune encephalomyelitis). The aim of this NGS experiment was to determine the transcirptome profile of in vivo activated 2D2-WT and 2D2-HDAC1-cKO CD4+ T cells in the absence of HDAC1 following MOG/CFA footpad immunization.
Project description:Genetic opticospinal EAE (OSE) and MOG-induced EAE (MOG-EAE) are two experimental autoimmune encephalomyelitis (EAE) mouse models of human multiple sclerosis. For the OSE model, double-transgenic 2D2 (TCRMOG) x IgHMOG mice were used. For MOG-EAE, wildtype C57BL/6 mice were immunized with a MOG peptide consisting of the amino acids 35-55, administered in complete Freund’s adjuvant containing 5mg / ml Mycobacterium tuberculosi. The severity of EAE was rated on the scale 0: healthy animal; 1: animal with a flaccid tail; [...]; 4: animal with both hind legs paralyzed. The case groups in the experiment were: OSE1: OSE with disease score 1; OSE4: OSE with disease score 4; MOG4: MOG-EAE injected with both MOG and adjuvant, with disease score 4. The control groups in the experiment were: OSE0: OSE with disease score 0; CFA: C57BL/6 mice injected only with adjuvant (no MOG); WT: Wildtype C57BL/6 mice. The aim of the experiment was to assess gene expression differences 1) between OSE4 and OSE0, 2) between OSE1 and OSE0, and 3) between MOG4 and CFA. For control, WT was compared to OSE0 and CFA. Subsequently, differentially expressed transcripts were compared, first, between the OSE4 vs. OSE0 and the MOG4 vs. CFA contrasts (different EAE models) and, second, between the OSE4 vs. OSE0 and the OSE1 vs. OSE0 contrasts (different EAE severity).
Project description:Our findings establish NIK as a pivotal regulator of T cell metabolism in anti-tumor immunity and highlight a posttranslational mechanism of metabolic regulation involving the G6PD-NADPH redox system. CoIP assays revealed a strong physical interaction between NIK and G6PD in both T cells and transiently transfected 293 cells, suggesting G6PD to be a direct target of NIK. Using a phosphoprotein gel analysis approach, we demonstrated that NIK expression stimulated G6PD phosphorylation. To further study the mechanism, we performed mass spectrometry identify phosphorylation sites of G6PD stimulated by NIK
Project description:MOG-reactive CD4 T cells were isolated from draining lymph nodes (dLN) and spleen of C57BL6/N female mice on day 10 after subcutaneous immunization with MOG(35-55) emulsified in Complete Freund’s adjuvant (CFA). Some mice received the CpG-B-1826 (50 microg; TCCATgACgTTCCTgACgTT; TIB MOLBIOL Syntheselabor GmbH), which was added to the MOG(35-55)/CFA mixture before emulsification. To isolate MOG-reactive CD4 T cells, dLN and spleens were harvested from mice on day 10 post-immunization, and single cell suspensions were re-stimulated for 5 hours using a mixture of MOG(35-55) (20 microg/ml), anti-CD40, anti-CD28, and anti-CD40L-PE (all from a commercial kit – Miltenyi Biotec – cat number 130-093-129). After 5 hours, CD4-positive cells were enriched magnetically by MACS using anti-CD4 microbeads (Miltenyi Biotec GmbH, cat. 130-049-201, clone L3T4), and subsequently subjected to FACS sorting to isolate CD4+CD40L+ and CD4+CD40L- cells after staining with anti-CD4 (clone RM4-5, conjugated to Pacific Blue), including a bin channel for CD8-positive cells (clone 53-6.7) and a marker for staining dead cells (NHPO). Sorted CD4+CD40L+ and CD4+CD40L- cells were then quickly checked for purity and directly lysed in 350 microlitre RLT buffer containing 1% beta-mercaptoethanol (Invitrogen). Purity was >95%. Mice were 6-10 weeks of age at the time of immunization. The goal was to identify genes differentially expressed between MOG-reactive CD4 T cells in mice treated or not with CpG-B, and to characterize the transcriptome of autoreactive CD4 T cells in draining lymph nodes and spleen on day 10 after immunization.
Project description:Analysis of differentially expressed genes in MCF7 cancer cells transfected with an expression vector containing the ORF of NIK, a shRNA of NIK and a control shRNA. Transient transfections were performed in triplicates . We use micorarrays to elucidate the machanisms by which NIK regulates stem cells biology