Bretylium Differentiates between Distinct Signal Transducing Pathways in Human Lymphocytes

C. Pieri, Z. Bacsó, R. Recchioni, F. Moroni, M. Balázs, R. Gáspár, S. Damjanovich

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The selection of signal transducing pathways of T cells depends on the type of triggers. Antigens, antibodies or lectins induce the T cell receptor-CD3 operated pathway, and IL-2 transmits its activation signal via the IL-2 receptor. It has been demonstrated that bretylium, a quaternary ammonium ion, can significantly inhibit the first pathway at the same dose range that stimulates cell activation through the IL-2 receptor system. In the light of the different complexity of the two pathways at the plasma membrane level, and the non-toxic and reversible behavior of the drug, it is suggested that the bretylium induced sustained membrane hyperpolarization is responsible for the observation. This finding may open new possibilities in studying the mechanism of different signal transducing pathways.

Original languageEnglish
Pages (from-to)654-659
Number of pages6
JournalBiochemical and Biophysical Research Communications
Volume190
Issue number2
DOIs
Publication statusPublished - Jan 29 1993

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Lymphocytes
Interleukin-2 Receptors
Signal Transduction
Chemical activation
T-cells
Cell membranes
T-Cell Antigen Receptor
Ammonium Compounds
Lectins
Interleukin-2
Cell Membrane
Observation
Ions
Membranes
T-Lymphocytes
Antigens
Antibodies
Pharmaceutical Preparations
bretylium

ASJC Scopus subject areas

  • Molecular Biology
  • Biophysics
  • Biochemistry

Cite this

Bretylium Differentiates between Distinct Signal Transducing Pathways in Human Lymphocytes. / Pieri, C.; Bacsó, Z.; Recchioni, R.; Moroni, F.; Balázs, M.; Gáspár, R.; Damjanovich, S.

In: Biochemical and Biophysical Research Communications, Vol. 190, No. 2, 29.01.1993, p. 654-659.

Research output: Contribution to journalArticle

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