title: Rapid determination of gamma delta T-cell stimulation by microfluorimetry.
abstract: Activated T-cell express CD25, the p55 chain of the IL-2 receptor. Here we report a reliable procedure for rapid determination of human gamma delta T cell activation by microfluorimetric measurement of CD25. Three days after initiation of culture, CD25 expression was determined. The sensitivity of this detection method was compared with [3H]thymidine incorporation at day 8. This proliferation assay allowed 3-5-fold higher dilution of the stimulatory ligand. However, monitoring of CD25 expression speeded up screening by 5 days. Therefore, for rapid screening of gamma delta T cell stimulation, e.g. for identification of activating ligands, monitoring of CD25 at day 3 is superior to [3H]thymidine measurement.
authors.affiliation: Department of Immunology, University of Ulm, Germany.
authors.forename: B
authors.initials: B
authors.lastname: Schoel
authors.forename: M
authors.initials: M
authors.lastname: Welzel
authors.forename: S H
authors.initials: SH
authors.lastname: Kaufmann
mesh_terms: D005434:Flow Cytometry / Q000379:methods*; D006801:Humans; D007700:Kinetics; D008213:Lymphocyte Activation; D016692:Receptors, Antigen, T-Cell, gamma-delta / Q000378:metabolism*; D015375:Receptors, Interleukin-2 / Q000096:biosynthesis / Q000302:isolation & purification; D012680:Sensitivity and Specificity; D013601:T-Lymphocytes / Q000276:immunology*
chemical_list: D016692:Receptors, Antigen, T-Cell, gamma-delta; D015375:Receptors, Interleukin-2