Polymorphonuclear neutrophils deliver activation signals and antigenic molecules to dendritic cells: a new link between leukocytes upstream of T lymphocytes (original) (raw)
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Unité Mixte de Recherche 7151 Centre National de la Recherche Scientifique–Université Paris 7, and laboratoire d’Immunologie Cellulaire et Immunopathologie de l’Ecole Pratique des Hautes Etudes, Institut Universitaire d’Hématologie, hôpital Saint-Louis
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France
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Unité Mixte de Recherche 7151 Centre National de la Recherche Scientifique–Université Paris 7, and laboratoire d’Immunologie Cellulaire et Immunopathologie de l’Ecole Pratique des Hautes Etudes, Institut Universitaire d’Hématologie, hôpital Saint-Louis
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France
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Macarena Robledo-Sarmiento
Unité Mixte de Recherche 7151 Centre National de la Recherche Scientifique–Université Paris 7, and laboratoire d’Immunologie Cellulaire et Immunopathologie de l’Ecole Pratique des Hautes Etudes, Institut Universitaire d’Hématologie, hôpital Saint-Louis
,
France
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,
Unité Mixte de Recherche 7151 Centre National de la Recherche Scientifique–Université Paris 7, and laboratoire d’Immunologie Cellulaire et Immunopathologie de l’Ecole Pratique des Hautes Etudes, Institut Universitaire d’Hématologie, hôpital Saint-Louis
,
France
Search for other works by this author on:
,
Unité Mixte de Recherche 7151 Centre National de la Recherche Scientifique–Université Paris 7, and laboratoire d’Immunologie Cellulaire et Immunopathologie de l’Ecole Pratique des Hautes Etudes, Institut Universitaire d’Hématologie, hôpital Saint-Louis
,
France
Search for other works by this author on:
Unité Mixte de Recherche 7151 Centre National de la Recherche Scientifique–Université Paris 7, and laboratoire d’Immunologie Cellulaire et Immunopathologie de l’Ecole Pratique des Hautes Etudes, Institut Universitaire d’Hématologie, hôpital Saint-Louis
,
France
Correspondence: CNRS UMR 7151, Institut Universitaire d’Hématologie, Centre Hayem, hôpital Saint-Louis, 1 avenue Claude Vellefaux, 75475 Paris Cedex 10, France. E-mail: sarah.boudaly@paris7.jussieu.fr
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Received:
22 September 2005
Revision received:
09 December 2005
Accepted:
10 January 2006
Published:
24 February 2006
Cite
Anna Maria Megiovanni, Françoise Sanchez, Macarena Robledo-Sarmiento, Céline Morel, Jean Claude Gluckman, Sarah Boudaly, Polymorphonuclear neutrophils deliver activation signals and antigenic molecules to dendritic cells: a new link between leukocytes upstream of T lymphocytes, Journal of Leukocyte Biology, Volume 79, Issue 5, May 2006, Pages 977–988, https://doi.org/10.1189/jlb.0905526
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Abstract
Polymorphonuclear neutrophils (PMNs) are rapidly recruited to tissues upon injury or infection. There, they can encounter local and/or recruited immature dendritic cells (iDCs), a colocalization that could promote at least transient interactions and mutually influence the two leukocyte populations. Using human live blood PMNs and monocyte-derived iDCs, we examined if these leukocytes actually interacted and whether this influenced DC function. Indeed, coculture with live but not apoptotic PMNs led to up-regulation of membrane CD40, CD86, and human leukocyte antigen (HLA)-DR on DCs. Whereas CD40 up-regulation was dependent on soluble factors released by PMNs, as determined in cultures conducted in different chambers, cell contact was necessary for CD86 and HLA-DR up-regulation, a process that was inhibited by anti-CD18 antibodies, indicating that CD18 ligation was required. We also found that via a cell contact-dependent mechanism, DCs acquired _Candida albicans_-derived antigens from live as well as from apoptotic PMNs and could thus elicit antigen-specific T lymphocyte responses. Altogether, our data demonstrate the occurrence of cross-talk between human PMNs and DCs and provide new insights into the immune processes occurring upstream of the interactions between DCs and T lymphocytes.
© 2006 Society for Leukocyte Biology
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