N-(3-oxododecanoyl)-l-homoserine-lactone, a quorum sensing molecule, affects cellular content of nonprotein thiol content in rat lymphocytes : Its relation with intracellular Zn2+

Access this Article

Search this Article

Abstract

Cellular actions of N-(3-oxododecanoyl)-L-homoserine-lactone (ODHL), a quorum sensing molecule of bacteria, were studied on rat thymocytes using a flow cytometer with appropriate fluorescent dyes to elucidate the effects of ODHL on host cells. A bell-shaped concentration-response relation was observed in the ODHL-induced changes in cellular glutathione content ([GSH]i). ODHL concentration-dependently increased intracellular Zn2+ levels ([Zn2+]i) and cellular O2- content ([O2-]i). The bell-shaped relation induced by ODHL can be explained as follows: a low concentration of ODHL is expected to induce moderate oxidative stress that intracellularly releases Zn2+ by converting thiols to disulfides. A slight elevation of [Zn2+]i may increase the [GSH]i. On the other hand, it is likely that a high concentration of ODHL causes severe oxidative stress that further causes both the decrease in [GSH]i and the increase in [Zn2+]i. Excessive increase in [Zn2+]i may augment oxidative stress that further decreases the [GSH]i. Other notable actions induced by ODHL included the elevation of [Zn2+]i by Zn2+ influx and the increase in [GSH]i under Zn2+-free conditions. Therefore, it is suggested that ODHL elicits diverse actions on host cells.

Journal

  • Chemico-Biological Interactions

    Chemico-Biological Interactions (280), 28-32, 2017-12-06

    Elsevier

Codes

  • NII Article ID (NAID)
    120006542676
  • NII NACSIS-CAT ID (NCID)
    AA0060252X
  • Text Lang
    ENG
  • Article Type
    journal article
  • ISSN
    0009-2797
  • Data Source
    IR 
Page Top