Project description:CD69 is a transmembrane protein expressed on the surface of activated leukocyte. The ligand for CD69 and the intracellular signaling pathway of this molecule are yet unknown. It is widely used as a marker of activated lymphocyte, but its function in immune system is not known. We used micro-array to define genes whose expression is regulated by activation antigene CD69. CD4 T cells were isolated from the spleen of wt B6 and CD69-deficient B6 mice and in vitro activated with anti-CD3/anti-CD28 coated beads. On one groupe of wt B6 cells, CD69 was activated using a anti-CD69 and secoundary antibody. RNA extraction and hybridization on Affymetrix microarrays was performed for wt B6, CD69-activated wt B6 and CD69-deficient B6 CD4 T cells.
Project description:Primary non-expanded human T cell populations were isolated by leukapheresis from 10 healthy donors. Out of each donor > 95% pure CD4-positive Th cell and >95% pure regulatory T cell populations were purified. Two affymetrix exon arrays were hybridized from each donor both populations as resting, non-activated samples. In addition, samples were hybridized from each donor and both populations activated by anti-CD3/anti-CD28 treatment for 4hours and 16 hours.
