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  • Title: Cellular origin of interleukin 2 (IL 2) in man: evidence for stimulus-restricted IL 2 production by T4+ and T8+ T lymphocytes.
    Author: Meuer SC, Hussey RE, Penta AC, Fitzgerald KA, Stadler BM, Schlossman SF, Reinherz EL.
    Journal: J Immunol; 1982 Sep; 129(3):1076-9. PubMed ID: 6213706.
    Abstract:
    The human T cell subset(s) responsible for production of interleukin 2 (IL 2) was investigated in the present study. For this purpose, highly purified T4+ and T8+ T lymphocytes were stimulated with mitogens and alloantigens. Subsequently, culture supernatants were analyzed for IL 2 activity in each of two assay systems: 1) proliferation of long-term T cell lines and 2) induction of cytotoxic effector cells from a resting T8+ population incubated in MLC. Mitogen stimulation led to secretion of equivalent amounts of IL 2 from both the major T cell subsets; in contrast, after allogeneic activation, IL 2 was produced predominantly from the T4+ subset. The stimulus dependency of IL 2 production suggests that the individual functional repertoires of T4+ and T8+ T cell subsets may be linked to unique surface receptors and/or interaction molecules involved in cell triggering rather than a restricted capacity to produce lymphokine.
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