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Receptor expression and responsiveness of human dendritic cells to a defined set of CC and CXC chemokines.

S Sozzani, W Luini, A Borsatti, N Polentarutti, D Zhou, L Piemonti, G D'Amico, C A Power, T N Wells, M Gobbi, P Allavena and A Mantovani
J Immunol August 15, 1997, 159 (4) 1993-2000;
S Sozzani
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W Luini
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A Borsatti
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N Polentarutti
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D Zhou
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L Piemonti
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G D'Amico
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C A Power
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T N Wells
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M Gobbi
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P Allavena
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A Mantovani
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Abstract

Dendritic cells (DC) are migratory cells that exhibit complex trafficking properties in vivo. The present study was designed to characterize receptor expression and responsiveness to chemoattractants of human DC obtained from PBMC by culture with granulocyte/macrophage-CSF and IL-13. DC expressed appreciable levels of the CCR1, CCR2, and CCR5 receptors for the CC chemokines and the chemokine receptors CXCR1, CXCR2, and CXCR4. DC increased intracellular free calcium and migrated in response to the CC chemokines MCP-3, MCP-4, RANTES, MIP-1alpha, MIP-1beta, and MIP-5/HCC2 and the CXC chemokine SDF-1. In contrast, the CC chemokines MCP-1 and eotaxin had little or no activity in the concentration range tested (up to 1 microg/ml). IL-8 and Gro-beta (CXC) and lymphotactin (C chemokines) were also inactive. DC did not respond to 5-HETE, whereas platelet-activating factor was an active agonist. Selected chemokines active on DC in terms of migration and calcium fluxes were examined for their capacity to modulate endocytosis and Ag presentation. Under conditions in which TNF-alpha was active, MCP-1, MCP-3, MIP-1alpha, and RANTES did not affect these two responses. Thus, among hemopoietic elements, DC respond to a unique set of CC and CXC chemokines, and their responsiveness is restricted to migration with no effect on Ag capture and presentation. Chemokines may play a role in the trafficking of DC under resting or stimulated conditions. Chemokine receptors expressed in DC are likely to underlie HIV infection of this cell type.

  • Copyright © 1997 by American Association of Immunologists

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The Journal of Immunology
Vol. 159, Issue 4
15 Aug 1997
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Receptor expression and responsiveness of human dendritic cells to a defined set of CC and CXC chemokines.
S Sozzani, W Luini, A Borsatti, N Polentarutti, D Zhou, L Piemonti, G D'Amico, C A Power, T N Wells, M Gobbi, P Allavena, A Mantovani
The Journal of Immunology August 15, 1997, 159 (4) 1993-2000;

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Receptor expression and responsiveness of human dendritic cells to a defined set of CC and CXC chemokines.
S Sozzani, W Luini, A Borsatti, N Polentarutti, D Zhou, L Piemonti, G D'Amico, C A Power, T N Wells, M Gobbi, P Allavena, A Mantovani
The Journal of Immunology August 15, 1997, 159 (4) 1993-2000;
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Print ISSN 0022-1767        Online ISSN 1550-6606