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    Lectin-binding characteristics of human natural killer cells.

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    Authors
    Vose, Brent M
    Blackledge, George
    Crowther, Derek
    Gallagher, John T
    Affiliation
    Immunology, Paterson Laboratories, Christie Hospital and Holt Radium Institute, Manchester, M20 9BX, UK.
    Issue Date
    1982-07
    
    Metadata
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    Abstract
    Human natural killer (NK) cells separated initially by density centrifugation of lymphocytes (E+) forming rosettes with sheep red blood cells (SRBC), were further fractionated on gradients of bovine serum albumin (BSA). Low density fractions contained effector cells which displayed high cytotoxicity against the NK-sensitive erythroleukaemic cell line, K562. These low density cells, which expressed receptors for Fc and the monoclonal antibody OKMI, showed enhanced cytotoxicity when treated with lymphoblastoid interferon (IFN-alpha). They also showed an increased response to phytomitogen in comparison with unseparated cells or those recovered from high density fractions. Two lymphocyte subsets one of high and one of low lectin binding capacity were identified in the E+ populations by their reactivity with Lens culinaris agglutinin (LCA). High LCA binding was observed only in low density fractions and was associated with a marked enrichment of NK activity. This property was used to separate the NK active population in E+ cells by fluorescence-activated cell sorting (FACS). These data add a new dimension to the cell surface properties of human NK cells and suggest the presence of LCA-reactive glycoproteins which are either enriched in, or uniquely associated with, cells of the NK subset. The experiments indicate that lectins can serve as useful probes of lymphocyte function and provide the basis for effective cell sorting.
    Citation
    Lectin-binding characteristics of human natural killer cells. 1982, 46 (3):619-27 Immunology
    Journal
    Immunology
    URI
    http://hdl.handle.net/10541/134095
    PubMed ID
    7095832
    Type
    Article
    Language
    en
    ISSN
    0019-2805
    Collections
    All Christie Publications

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