title: Measurement of apoptosis in heterogenous cell populations.
abstract: The increasing interest in programmed cell death has created the need to measure apoptosis in complex cell systems. We have combined the use of fluorescent antibodies with the Hoechst 33342/propidium iodide system in order to quantitate programmed cell death in fractions of heterogenous cell populations. Here we describe the analysis of T-cell apoptosis after ligation of the T-cell antigen receptor by superantigen in vitro and ex vivo. This technique can separate cells according to seven parameters, fluorescence caused by FITC, PE, allophycocyanin, incorporation of Hoechst 33342, PI, forward scatter, and side scatter, and it allows determination of elevated Hoechst 33342 uptake in less than 10% of the cell population.
authors.affiliation: Division of Cellular and Molecular Biology, Dana-Farber Cancer Institute & Harvard Medical School, Boston, Massachusetts 02115, USA.
authors.forename: G F
authors.initials: GF
authors.lastname: Weber
authors.forename: J
authors.initials: J
authors.lastname: Daley
authors.forename: S K
authors.initials: SK
authors.lastname: Kraeft
authors.forename: L B
authors.initials: LB
authors.lastname: Chen
authors.forename: H
authors.initials: H
authors.lastname: Cantor
mesh_terms: D000818:Animals; D017209:Apoptosis; D001562:Benzimidazoles / Q000737:chemistry; D002460:Cell Line; D005260:Female; D005434:Flow Cytometry / Q000379:methods*; D005456:Fluorescent Dyes / Q000737:chemistry; D008297:Male; D051379:Mice; D008807:Mice, Inbred BALB C; D008811:Mice, Inbred DBA; D011419:Propidium / Q000737:chemistry; D016693:Receptors, Antigen, T-Cell, alpha-beta / Q000276:immunology; D012542:Scattering, Radiation; D018089:Superantigens / Q000276:immunology; D013601:T-Lymphocytes / Q000276:immunology / Q000502:physiology; D014407:Tumor Cells, Cultured
chemical_list: D001562:Benzimidazoles; D005456:Fluorescent Dyes; D016693:Receptors, Antigen, T-Cell, alpha-beta; D018089:Superantigens; D011419:Propidium; C017807:bisbenzimide ethoxide trihydrochloride