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  • Title: Proliferation of chicken peripheral blood leukocytes in response to pokeweed mitogen is macrophage dependent.
    Author: Vainio O, Ratcliffe MJ.
    Journal: Cell Immunol; 1984 Apr 15; 85(1):235-43. PubMed ID: 6608996.
    Abstract:
    Chicken peripheral blood leukocytes (PBL) proliferate in vitro in response to a wide range of pokeweed mitogen (PWM) concentrations. The PWM response was not influenced by the major histocompatibility complex (MHC) haplotype nor by the intrinsic responsiveness of the PBL to concanavalin A (Con A). The results indicate that PWM under our conditions stimulates B-lineage cells, although a T-cell subset is also clearly induced to division. The PBL from B-cell-depleted animals gave substantially lower responses than those from normal controls. Pokeweed mitogen stimulation of PBL was adherent cell dependent. Thus the low PWM response of adherent cell-depleted PBL was reconstituted by the addition of irradiated unseparated PBL. Furthermore, purified irradiated adherent cells containing greater than 90% macrophages were also able to reconstitute PWM responses. Finally, we have shown that PWM was able to induce large numbers of B cells to produce cytoplasmic immunoglobulin. However, only a minor proportion of such cells were induced to immunoglobulin secretion.
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