title: Differential membrane labelling of human lymphocyte subsets by PKH-2 examined by multiparameter flow cytometry. A possible correlation between lipid composition of cellular membranes and functional properties?
abstract: Human peripheral blood lymphocytes were stained simultaneously with the lipophilic membrane label PKH-2 and surface markers and analysed by multiparameter flow cytometry. A biphasic staining distribution was observed for T (CD3+) as well as B (CD19+) cells. Within the T subset, CD4+ cells stained almost exclusively with bright PKH-2 intensity, while CD8+ cells exhibited a more pronounced bimodal staining pattern. No difference in staining intensity was noted for CD4+CD45R0+ vs. CD4+CD45R0- cells. This multiparameter staining method demonstrates differences in membrane lipid composition between different human lymphocyte subsets, and suggest that caution must be exercised when evaluating PKH-2 labelling of human lymphocytes.
authors.affiliation: Section for Clinical Immunology and Transfusion Medicine, University Hospital, Uppsala, Sweden.
authors.forename: R
authors.initials: R
authors.lastname: Festin
mesh_terms: D015703:Antigens, CD / Q000032:analysis; D002469:Cell Separation / Q000379:methods*; D005434:Flow Cytometry; D005456:Fluorescent Dyes; D006801:Humans; D016131:Lymphocyte Subsets / Q000276:immunology*; D009930:Organic Chemicals; D010799:Phycoerythrin; D013194:Staining and Labeling / Q000379:methods
chemical_list: D015703:Antigens, CD; D005456:Fluorescent Dyes; D009930:Organic Chemicals; C068241:PKH-2; D010799:Phycoerythrin