Aryl-hydrocarbon receptor (AhR) is a cytosolic receptor found in many cells, including immune cells, and its function has been implicated in metabolic and transcriptional control of immune regulation. In the present study we have investigated the effect of the AhR-ligands, FICZ, I3C, curcumin, quercetin and the ligands precursor tryptophan, on bone marrow-derived dendritic cell (BMDC) maturation and immuno-stimulatory or immuno-suppressive phenotypes. We find that immature and mature BMDC express intracellular AhR. Treatment of BMDC with AhR-ligands during LPS-induced BMDC maturation had no significant effect on the expression of MHC class II, CD40 and CD86, with the exception of I3C which suppressed CD40 expression by BMDC at high doses. However, all AhR-ligands significantly enhanced the secretion of pro-inflammatory cytokines, including IL-6, IL-12p40, TNF-α, and IL-1β. In contrast, only the AhR-ligands FICZ and I3C increased IL-10 and TGF-β secretion. Tryptophan, curcumin, and quercetin significantly suppressed IL-10 secretion without affecting TGF-β secretion. Finally, FICZ and I3C significantly enhanced the expression of the tolerogenic DC enzyme, indoleamine-2, 3-dioxygenase (IDO), while tryptophan, curcumin and quercetin did not change IDO expression. These results suggest that FICZ and I3C can promote a tolerogenic BMDC phenotype consistent with suppression of immune responses by enhancing the secretion of anti-inflammatory cytokines and increasing IDO expression. In contrast, tryptophan, curcumin and quercetin can promote an immuno-stimulatory BMDC phenotype, secreting elevated pro-inflammatory cytokines, which could help in skewing T cell responses towards the development of effector CD4 and CD8 T cell subsets.
| Published in | International Journal of Immunology (Volume 1, Issue 3) |
| DOI | 10.11648/j.iji.20130103.11 |
| Page(s) | 24-34 |
| Creative Commons |
This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited. |
| Copyright |
Copyright © The Author(s), 2013. Published by Science Publishing Group |
Curcumin, Tryptophan, Quercetin, FICZ, I3C, TGF-β, IL-10, IDO
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APA Style
Hana’a A. Abu-Rezq, Douglas G. Millar. (2013). Effects of Aryl-Hydrocarbon Ligands on Dendritic Cell Maturation. International Journal of Immunology, 1(3), 24-34. https://doi.org/10.11648/j.iji.20130103.11
ACS Style
Hana’a A. Abu-Rezq; Douglas G. Millar. Effects of Aryl-Hydrocarbon Ligands on Dendritic Cell Maturation. Int. J. Immunol. 2013, 1(3), 24-34. doi: 10.11648/j.iji.20130103.11
AMA Style
Hana’a A. Abu-Rezq, Douglas G. Millar. Effects of Aryl-Hydrocarbon Ligands on Dendritic Cell Maturation. Int J Immunol. 2013;1(3):24-34. doi: 10.11648/j.iji.20130103.11
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Download@article{10.11648/j.iji.20130103.11,
author = {Hana’a A. Abu-Rezq and Douglas G. Millar},
title = {Effects of Aryl-Hydrocarbon Ligands on Dendritic Cell Maturation},
journal = {International Journal of Immunology},
volume = {1},
number = {3},
pages = {24-34},
doi = {10.11648/j.iji.20130103.11},
url = {https://doi.org/10.11648/j.iji.20130103.11},
eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.iji.20130103.11},
abstract = {Aryl-hydrocarbon receptor (AhR) is a cytosolic receptor found in many cells, including immune cells, and its function has been implicated in metabolic and transcriptional control of immune regulation. In the present study we have investigated the effect of the AhR-ligands, FICZ, I3C, curcumin, quercetin and the ligands precursor tryptophan, on bone marrow-derived dendritic cell (BMDC) maturation and immuno-stimulatory or immuno-suppressive phenotypes. We find that immature and mature BMDC express intracellular AhR. Treatment of BMDC with AhR-ligands during LPS-induced BMDC maturation had no significant effect on the expression of MHC class II, CD40 and CD86, with the exception of I3C which suppressed CD40 expression by BMDC at high doses. However, all AhR-ligands significantly enhanced the secretion of pro-inflammatory cytokines, including IL-6, IL-12p40, TNF-α, and IL-1β. In contrast, only the AhR-ligands FICZ and I3C increased IL-10 and TGF-β secretion. Tryptophan, curcumin, and quercetin significantly suppressed IL-10 secretion without affecting TGF-β secretion. Finally, FICZ and I3C significantly enhanced the expression of the tolerogenic DC enzyme, indoleamine-2, 3-dioxygenase (IDO), while tryptophan, curcumin and quercetin did not change IDO expression. These results suggest that FICZ and I3C can promote a tolerogenic BMDC phenotype consistent with suppression of immune responses by enhancing the secretion of anti-inflammatory cytokines and increasing IDO expression. In contrast, tryptophan, curcumin and quercetin can promote an immuno-stimulatory BMDC phenotype, secreting elevated pro-inflammatory cytokines, which could help in skewing T cell responses towards the development of effector CD4 and CD8 T cell subsets.},
year = {2013}
}
TY - JOUR T1 - Effects of Aryl-Hydrocarbon Ligands on Dendritic Cell Maturation AU - Hana’a A. Abu-Rezq AU - Douglas G. Millar Y1 - 2013/09/10 PY - 2013 N1 - https://doi.org/10.11648/j.iji.20130103.11 DO - 10.11648/j.iji.20130103.11 T2 - International Journal of Immunology JF - International Journal of Immunology JO - International Journal of Immunology SP - 24 EP - 34 PB - Science Publishing Group SN - 2329-1753 UR - https://doi.org/10.11648/j.iji.20130103.11 AB - Aryl-hydrocarbon receptor (AhR) is a cytosolic receptor found in many cells, including immune cells, and its function has been implicated in metabolic and transcriptional control of immune regulation. In the present study we have investigated the effect of the AhR-ligands, FICZ, I3C, curcumin, quercetin and the ligands precursor tryptophan, on bone marrow-derived dendritic cell (BMDC) maturation and immuno-stimulatory or immuno-suppressive phenotypes. We find that immature and mature BMDC express intracellular AhR. Treatment of BMDC with AhR-ligands during LPS-induced BMDC maturation had no significant effect on the expression of MHC class II, CD40 and CD86, with the exception of I3C which suppressed CD40 expression by BMDC at high doses. However, all AhR-ligands significantly enhanced the secretion of pro-inflammatory cytokines, including IL-6, IL-12p40, TNF-α, and IL-1β. In contrast, only the AhR-ligands FICZ and I3C increased IL-10 and TGF-β secretion. Tryptophan, curcumin, and quercetin significantly suppressed IL-10 secretion without affecting TGF-β secretion. Finally, FICZ and I3C significantly enhanced the expression of the tolerogenic DC enzyme, indoleamine-2, 3-dioxygenase (IDO), while tryptophan, curcumin and quercetin did not change IDO expression. These results suggest that FICZ and I3C can promote a tolerogenic BMDC phenotype consistent with suppression of immune responses by enhancing the secretion of anti-inflammatory cytokines and increasing IDO expression. In contrast, tryptophan, curcumin and quercetin can promote an immuno-stimulatory BMDC phenotype, secreting elevated pro-inflammatory cytokines, which could help in skewing T cell responses towards the development of effector CD4 and CD8 T cell subsets. VL - 1 IS - 3 ER -
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