[Interleukin 2-stimulated formation of ATP in T cell particles enriched with plasma membranes]

Distinct increase in content of ATP was found in preparations of enriched with plasmatic membranes particles from rat thymus T lymphocytes and from human peripheric blood T lymphocytes after their incubation with interleukin-2 as compared with controls which did not contain the peptide. The phenomenon observed was manifested only if these particles from T cells were preincubated with concanavalin A (2 min, 40 micrograms/ml), which is required to expression of the receptors for interleukin-2. The membrane-bound ATP, formed after the interleukin-2 effect on receptors of T lymphocytes, appears to serve as the secondary messenger activating protein kinase C.