Abstract:
:Interleukin-2 (IL-2) is a regulatory peptide important for the growth and differentiation of antigen-specific T lymphocytes and large granular lymphocytes. Interaction of IL-2 with its specific receptor results in the promotion of S-phase progression as well as, in certain circumstances, the production and release of gamma-interferon (IFN-gamma). Although the binding of IL-2 with high-affinity specific receptors has been well characterized, the intracellular mechanisms by which this ligand-receptor interaction promotes growth and differentiation are unknown. Here, we present evidence that IL-2/receptor interaction produces a rapid and transient redistribution of protein kinase C (PK-C) from the cytosol to the plasma membrane. Phorbol myristate acetate (PMA) also induces PK-C transposition in an analogous manner, except that PMA-induced PK-C transposition to the plasma membrane is apparently protracted. As phorbol esters have been shown to mimic IL-2 in the regulation of cellular proliferation as well as IFN-gamma production, the activation of PK-C by either phorbol esters or IL-2/receptor interaction seems to have a crucial role in signal transduction elicited by these extracellular messengers.
journal_name
Naturejournal_title
Natureauthors
Farrar WL,Anderson WBdoi
10.1038/315233a0subject
Has Abstractpub_date
1985-05-16 00:00:00pages
233-5issue
6016eissn
0028-0836issn
1476-4687journal_volume
315pub_type
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