Open AccessRapid separation of CD4+ and CD19+ lymphocyte populations from human peripheral blood by a magnetic activated cell sorter (MACS)
Author(s) -
Semple John W.,
Allen David,
Chang Wilda,
Castaldi Patrick,
Freedman John
Publication year - 1993
Publication title -
cytometry
Language(s) - English
Resource type - Journals
eISSN - 1097-0320
pISSN - 0196-4763
DOI - 10.1002/cyto.990140816
Subject(s) - cd19 , immunomagnetic separation , biology , lymphocyte , cell , microbiology and biotechnology , b cell , immunology , t cell , peripheral blood mononuclear cell , flow cytometry , in vitro , immune system , antibody , biochemistry
Rapid purification of human lymphocyte subpopulations is an essential step in order to elucidate their interactions and/or contributions in various disease states. Cell purification using a Magnetic Activated Cell Sorter (MACS) is a relatively new technology which has been shown to be rapid and yield highly purified populations of cells. This report describes both a simple one‐step positive selection method using the MACS to purify either human CD4+ or CD19+ lymphocytes from PBMC and a sequential separation of both CD4+ and CD19+ cell populations. These methods can separate the cell populations in approximately 4 h with yields >90% and purity of 97 ± 3% for CD4+ T cells and 92 ± 5% for CD19+ B cells. In functional studies, purified CD19+ B cells secreted 13‐ and 24‐fold more IgM and IgG, respectively, than the CD19− cell fraction in 10 day B cell stimulation assays. Purification of the two cell types did not cause any significant activation as shown by proliferation. Both cell types, however, were able to proliferate upon stimulation with interleukin‐2. © 1993 Wiley‐Liss, Inc.