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Related Experiment Videos

Neurohormones regulate T cell function.

W Heagy1, M Laurance, E Cohen

  • 1Laboratory of Infectious Diseases, Dana-Farber Cancer Institute, Boston, MA 02115.

The Journal of Experimental Medicine
|May 1, 1990
PubMed
Summary
This summary is machine-generated.

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Neurohormones like beta-endorphin directly influence T cell movement. These endogenous opioids enhance T lymphocyte migration by interacting with opiate receptors, modulating immune cell trafficking.

Area of Science:

  • Neuroimmunology
  • Cellular immunology
  • Molecular pharmacology

Background:

  • T cell locomotion is crucial for immune responses.
  • The interaction between the nervous and immune systems is increasingly recognized.
  • Neurohormones are signaling molecules with diverse physiological roles.

Purpose of the Study:

  • To investigate the effect of neurohormones on T cell migration.
  • To determine if opioid peptides influence T lymphocyte chemotaxis.
  • To explore the receptor mechanisms involved in neurohormone-T cell interaction.

Main Methods:

  • Human peripheral blood T lymphocytes were utilized.
  • Migration assays were performed in the presence of various opioid peptides (beta-END, MET-ENK, LEU-ENK) and enkephalin analogues.

Related Experiment Videos

  • The effect of the opiate receptor antagonist naloxone was assessed.
  • Peptide NH2-terminal sequence dependency was analyzed.

    • Main Results:

    • Opioid peptides, including beta-END, MET-ENK, and LEU-ENK, significantly enhanced T cell migration.
    • The stimulatory effect was dependent on the peptide's NH2-terminal sequence and specificity for mu or delta opiate receptors.
    • Naloxone, an opiate receptor antagonist, inhibited the observed T cell migration enhancement.
    • Neuropeptides appear to stimulate T cell chemotaxis via interaction with opiate receptor-like sites.

    Conclusions:

    • Endogenous opioids such as beta-END, MET-ENK, and LEU-ENK act as potent immunomodulatory signals.
    • These neuropeptides regulate the trafficking of immune response cells, specifically T lymphocytes.
    • Neurohormonal modulation of immune cell migration represents a novel mechanism in neuroimmunology.