Article (Scientific journals)
Germinal center dendritic cells express more ICAM-1 than extrafollicular dendritic cells and ICAM-1/LFA-1 interactions are involved in the capacity of dendritic cells to induce PBMCs proliferation
Goval, Jean-Jacques; Greimers, Roland; Boniver, Jacques et al.
2006In Journal of Histochemistry and Cytochemistry, 54 (1), p. 75-84
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Keywords :
germinal center dendritic cells; human tonsils; ICAM-1; CD54; immunofluorescence; flow cytometry
Abstract :
[en] Germinal center dendritic cells (GCDCs) have been identified as CD11c(+) CD4(+) CD3(-) cells located in GCs with them ability of inducing marked proliferation of allogenic T cells. Using immunofluorescence techniques, we have observed that this CD11c(+) CD4(+) CD3(-) immunophenotype identified GCDCs but also a subset of extrafollicular DCs. By flow cytometry, we were able to discriminate the GCDCs (CD11c(high) CD4(high) lin(-)) from the other tonsil DCs. By immunofluorescence and flow cytometry, we found that dendritic cells of germinal centers express more intracellular adhesion molecule-1 (ICAM-1) (CD54) than extrafollicular dendritic cells. Proliferation of peripheral blood mononuclear cells (PBMCs) induced by coculture with purified CD11c(+) CD4(+) CD3(-) DCs was reduced by addition of blocking anti-CD54 antibodies. In summary, distinct levels of ICAM-1 expression allow the distinction between GCDCs and extrafollicular DCs, and cellular interactions mediated by CD54 are likely to play a role in the capacity of GCDC to stimulate allogenic PBMC proliferation.
Disciplines :
Anatomy (cytology, histology, embryology...) & physiology
Author, co-author :
Goval, Jean-Jacques ;  Université de Liège - ULiège > Platform Imaging & Flow cytometry
Greimers, Roland ;  Université de Liège - ULiège > Département des sciences biomédicales et précliniques > Anatomie et cytologie pathologiques
Boniver, Jacques ;  Université de Liège - ULiège > Département des sciences biomédicales et précliniques > Anatomie et cytologie pathologiques
de Leval, Laurence ;  Université de Liège - ULiège > Département des sciences biomédicales et précliniques > Anatomie et cytologie pathologiques
Language :
English
Title :
Germinal center dendritic cells express more ICAM-1 than extrafollicular dendritic cells and ICAM-1/LFA-1 interactions are involved in the capacity of dendritic cells to induce PBMCs proliferation
Publication date :
January 2006
Journal title :
Journal of Histochemistry and Cytochemistry
ISSN :
0022-1554
eISSN :
1551-5044
Publisher :
Histochemical Society, United States - New York
Volume :
54
Issue :
1
Pages :
75-84
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 19 December 2020

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