Extracelluar Signal-Regulated Kinase-Dependent Nitric Oxide Production from Macrophage-Like Cells by Lactic Acid Bacteria
Lactic acid bacteria (LAB) are considered as probiotics with immunostimulatory property. In this study, we investigated the molecular mechanism of its immunostimulating potency on macrophages using combined preparation of LAB (cpLAB). cpLAB is able to strongly stimulate nitric oxide (NO) production...
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Published in | Biomolecules & therapeutics Vol. 17; no. 3; pp. 276 - 281 |
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Main Authors | , , , , , , |
Format | Journal Article |
Language | Korean |
Published |
한국응용약물학회
2009
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Subjects | |
Online Access | Get full text |
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Summary: | Lactic acid bacteria (LAB) are considered as probiotics with immunostimulatory property. In this study, we investigated the molecular mechanism of its immunostimulating potency on macrophages using combined preparation of LAB (cpLAB). cpLAB is able to strongly stimulate nitric oxide (NO) production as well as inducible NO synthase (iNOS) expression from macrophage-like RAW264.7 cells. The cpLAB-induced NO release seemed to be mediated by extracellular signal-regulated kinase (ERK) but not p38 and C-Jun N-terminal kinase (JNK), since U0126, an ERK inhibitor, clearly suppressed NO production. cpLAB significantly diminished the binding of toll like receptor (TLR)-2 antibody up to 25%, implying that cpLAB-mediated activation of macrophages may be required for the functional activation of TLR-2, but not TLR-4. Therefore, our data suggest that cpLAB may directly allow macrophages to immunostimulating potency via activation of TLR-2 and ERK. |
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Bibliography: | The Korean Society of Applied Pharmacology KISTI1.1003/JNL.JAKO200922335514833 |
ISSN: | 1976-9148 2005-4483 |