Journal of Experimental Medicine, Vol 171, 1625-1633, Copyright © 1990 by Rockefeller University Press

ARTICLES

Neurohormones regulate T cell function

W Heagy, M Laurance, E Cohen and R Finberg
Laboratory of Infectious Diseases, Dana-Farber Cancer Institute, Boston, MA 02115.

In this communication we show that T cell locomotion is affected by direct interaction with neurohormones. Opioid peptides, including beta- END, MET-ENK, LEU-ENK, and related enkephalin analogues enhanced migration of human peripheral blood T lymphocytes. Activity was dependent on the peptide NH2-terminal sequence, stimulated by enkephalin analogues with specificity for classical delta or mu types of opiate receptor, and inhibited by the opiate receptor antagonist naloxone. Our studies suggest that such neuropeptides stimulate T cell chemotaxis by interaction with sites analogues to classical opiate receptors. We propose that the endogenous opioids beta-END, MET-ENK, and LEU-ENK are potent immunomodulating signals that regulate the trafficking of immune response cells.
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