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© Matteo Bonazzi, Edith Gouin
Observation en immunofluorescence d'une cellule infectée par Listeria monocytogenes. En bleu: marquage des protéines de surface de Listeria qui permet de visualiser les bactéries. En rouge et vert: marquage de l'actine, une protéine qui forme le cytosquelette des cellules. Les Listeria utilisent l'actine cellulaire pour former des "comêtes" et se déplacer à l'intérieur des cellules qu'elles infectent. Cell infected by Listeria monocytogenes. The surface proteins (in blue) of Listeria enable us to view the bacteria. Actin, a constituent protein of cells, is shown in red and green.
Publication : Frontiers in immunology

Mast cells and company

Scientific Fields
Diseases
Organisms
Applications
Technique

Published in Frontiers in immunology - 20 Feb 2012

Jönsson F, Daëron M

Link to Pubmed [PMID] – 22566901

Front Immunol 2012;3:16

Classically, allergy depends on IgE antibodies and on high-affinity IgE receptors expressed by mast cells and basophils. This long accepted IgE/FcεRI/mast cell paradigm, on which the definition of immediate hypersensitivity was based in the Gell and Coomb’s classification, appears too reductionist. Recently accumulated evidence indeed requires that not only IgE but also IgG antibodies, that not only FcεRI but also FcγR of the different types, that not only mast cells and basophils but also neutrophils, monocytes, macrophages, eosinophils, and other myeloid cells be considered as important players in allergy. This view markedly changes our understanding of allergic diseases and, possibly, their treatment.