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Cross-Linking Mast Cell Specific Gangliosides Stimulates the Release of Newly Formed Lipid Mediators and Newly Synthesized Cytokines

Mast cells are immunoregulatory cells that participate in inflammatory processes. Cross-linking mast cell specific GD1b derived gangliosides by mAbAA4 results in partial activation of mast cells without the release of preformed mediators. The present study examines the release of newly formed and ne...

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Autores principales: Filho, Edismauro Garcia Freitas, da Silva, Elaine Zayas Marcelino, Zanotto, Camila Ziliotto, Oliver, Constance, Jamur, Maria Célia
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Hindawi Publishing Corporation 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4992799/
https://www.ncbi.nlm.nih.gov/pubmed/27578923
http://dx.doi.org/10.1155/2016/9160540
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author Filho, Edismauro Garcia Freitas
da Silva, Elaine Zayas Marcelino
Zanotto, Camila Ziliotto
Oliver, Constance
Jamur, Maria Célia
author_facet Filho, Edismauro Garcia Freitas
da Silva, Elaine Zayas Marcelino
Zanotto, Camila Ziliotto
Oliver, Constance
Jamur, Maria Célia
author_sort Filho, Edismauro Garcia Freitas
collection PubMed
description Mast cells are immunoregulatory cells that participate in inflammatory processes. Cross-linking mast cell specific GD1b derived gangliosides by mAbAA4 results in partial activation of mast cells without the release of preformed mediators. The present study examines the release of newly formed and newly synthesized mediators following ganglioside cross-linking. Cross-linking the gangliosides with mAbAA4 released the newly formed lipid mediators, prostaglandins D(2 )and E(2), without release of leukotrienes B(4) and C(4). The effect of cross-linking these gangliosides on the activation of enzymes in the arachidonate cascade was then investigated. Ganglioside cross-linking resulted in phosphorylation of cytosolic phospholipase A(2) and increased expression of cyclooxygenase-2. Translocation of 5-lipoxygenase from the cytosol to the nucleus was not induced by ganglioside cross-linking. Cross-linking of GD1b derived gangliosides also resulted in the release of the newly synthesized mediators, interleukin-4, interleukin-6, and TNF-α. The effect of cross-linking the gangliosides on the MAP kinase pathway was then investigated. Cross-linking the gangliosides induced the phosphorylation of ERK1/2, JNK1/2, and p38 as well as activating both NFκB and NFAT in a Syk-dependent manner. Therefore, cross-linking the mast cell specific GD1b derived gangliosides results in the activation of signaling pathways that culminate with the release of newly formed and newly synthesized mediators.
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spelling pubmed-49927992016-08-30 Cross-Linking Mast Cell Specific Gangliosides Stimulates the Release of Newly Formed Lipid Mediators and Newly Synthesized Cytokines Filho, Edismauro Garcia Freitas da Silva, Elaine Zayas Marcelino Zanotto, Camila Ziliotto Oliver, Constance Jamur, Maria Célia Mediators Inflamm Research Article Mast cells are immunoregulatory cells that participate in inflammatory processes. Cross-linking mast cell specific GD1b derived gangliosides by mAbAA4 results in partial activation of mast cells without the release of preformed mediators. The present study examines the release of newly formed and newly synthesized mediators following ganglioside cross-linking. Cross-linking the gangliosides with mAbAA4 released the newly formed lipid mediators, prostaglandins D(2 )and E(2), without release of leukotrienes B(4) and C(4). The effect of cross-linking these gangliosides on the activation of enzymes in the arachidonate cascade was then investigated. Ganglioside cross-linking resulted in phosphorylation of cytosolic phospholipase A(2) and increased expression of cyclooxygenase-2. Translocation of 5-lipoxygenase from the cytosol to the nucleus was not induced by ganglioside cross-linking. Cross-linking of GD1b derived gangliosides also resulted in the release of the newly synthesized mediators, interleukin-4, interleukin-6, and TNF-α. The effect of cross-linking the gangliosides on the MAP kinase pathway was then investigated. Cross-linking the gangliosides induced the phosphorylation of ERK1/2, JNK1/2, and p38 as well as activating both NFκB and NFAT in a Syk-dependent manner. Therefore, cross-linking the mast cell specific GD1b derived gangliosides results in the activation of signaling pathways that culminate with the release of newly formed and newly synthesized mediators. Hindawi Publishing Corporation 2016 2016-08-08 /pmc/articles/PMC4992799/ /pubmed/27578923 http://dx.doi.org/10.1155/2016/9160540 Text en Copyright © 2016 Edismauro Garcia Freitas Filho et al. https://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research Article
Filho, Edismauro Garcia Freitas
da Silva, Elaine Zayas Marcelino
Zanotto, Camila Ziliotto
Oliver, Constance
Jamur, Maria Célia
Cross-Linking Mast Cell Specific Gangliosides Stimulates the Release of Newly Formed Lipid Mediators and Newly Synthesized Cytokines
title Cross-Linking Mast Cell Specific Gangliosides Stimulates the Release of Newly Formed Lipid Mediators and Newly Synthesized Cytokines
title_full Cross-Linking Mast Cell Specific Gangliosides Stimulates the Release of Newly Formed Lipid Mediators and Newly Synthesized Cytokines
title_fullStr Cross-Linking Mast Cell Specific Gangliosides Stimulates the Release of Newly Formed Lipid Mediators and Newly Synthesized Cytokines
title_full_unstemmed Cross-Linking Mast Cell Specific Gangliosides Stimulates the Release of Newly Formed Lipid Mediators and Newly Synthesized Cytokines
title_short Cross-Linking Mast Cell Specific Gangliosides Stimulates the Release of Newly Formed Lipid Mediators and Newly Synthesized Cytokines
title_sort cross-linking mast cell specific gangliosides stimulates the release of newly formed lipid mediators and newly synthesized cytokines
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4992799/
https://www.ncbi.nlm.nih.gov/pubmed/27578923
http://dx.doi.org/10.1155/2016/9160540
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