title: Non-major histocompatibility complex-restricted killer cells in human cord blood: generation and cytotoxic activity in recombinant interleukin-2-supplemented cultures.
abstract: Interleukin-2 (IL-2)-induced generation of non-major histocompatibility complex (MHC)-restricted killer cells among human cord blood lymphocytes (CBL) was investigated. After 1 week in culture with recombinant (r)IL-2 and human serum (HuSer), the cytotoxicity of CBL against K562 and COLO cells greatly exceeded the cytotoxicity of cultured adult peripheral blood lymphocytes. Culturing of CBL with rIL-2 and HuSer led to preferable generation of CD56+ cells. After 1 month in culture, the number and frequency of CD56+ cells had increased by more than 50 and nine times, respectively. The generation of CD56+ cells in CBL cultures may at least partially be explained by their comparatively strong expression of the IL-2 receptor (IL-2R) beta-chain (p75).
authors.affiliation: Department of Pathology, University of Helsinki, Finland.
authors.forename: A M
authors.initials: AM
authors.lastname: Malygin
authors.forename: T
authors.initials: T
authors.lastname: Timonen
mesh_terms: D015703:Antigens, CD / Q000032:analysis; D000945:Antigens, Differentiation, T-Lymphocyte / Q000032:analysis; D019002:CD56 Antigen; D002478:Cells, Cultured; D003602:Cytotoxicity, Immunologic / Q000276:immunology*; D005312:Fetal Blood / Q000276:immunology*; D006801:Humans; D007376:Interleukin-2 / Q000276:immunology*; D007694:Killer Cells, Natural / Q000276:immunology*; D008285:Major Histocompatibility Complex / Q000276:immunology; D011994:Recombinant Proteins / Q000276:immunology
chemical_list: D015703:Antigens, CD; D000945:Antigens, Differentiation, T-Lymphocyte; D019002:CD56 Antigen; D007376:Interleukin-2; D011994:Recombinant Proteins