Curdlan-mediated regulation of human phagocyte-specific chitotriosidase.
Human phagocyte-specific chitotriosidase is part of innate immunity and shows anti-fungal activity towards chitin-containing fungi. We investigated the effect of stimulation of the C-type lectin receptor dectin-1 by beta-1,3-glucan (curdlan) on chitotriosidase expression and release by human phagocytes. We observed that curdlan triggers chitotriosidase release from human neutrophils. In addition, we show that curdlan impairs chitotriosidase induction in monocytes. Finally, curdlan temporarily induces chitotriosidase in enzyme-expressing monocyte-derived macrophages, followed by reduction of chitotriosidase expression after prolonged stimulation. These data on regulation of phagocyte-specific chitotriosidase following curdlan recognition support an important role of chitotriosidase in the elimination of chitin-containing pathogens.
van Eijk
Marco
M
Department of Medical Biochemistry, University of Amsterdam, Academic Medical Center, Amsterdam, The Netherlands. m.c.vaneijk@amc.uva.nl
Voorn-Brouwer
Tineke
T
Scheij
Saskia S
SS
Verhoeven
Arthur J
AJ
Boot
Rolf G
RG
Aerts
Johannes M F G
JM
D002454:Cell Differentiation / Q000276:immunology; D002686:Chitin / Q000276:immunology / Q000378:metabolism / Q000494:pharmacology; D006596:Hexosaminidases; D006801:Humans; D007113:Immunity, Innate; D037181:Lectins, C-Type / Q000276:immunology / Q000378:metabolism; D008264:Macrophages / Q000276:immunology* / Q000378:metabolism; D008565:Membrane Proteins; D009000:Monocytes / Q000276:immunology / Q000378:metabolism; D009419:Nerve Tissue Proteins; D009504:Neutrophils / Q000187:drug effects / Q000276:immunology / Q000378:metabolism; D010586:Phagocytes / Q000276:immunology / Q000378:metabolism; D047071:beta-Glucans; D000099181:Dectin-1
D002686:Chitin; D006596:Hexosaminidases; D037181:Lectins, C-Type; D008565:Membrane Proteins; D009419:Nerve Tissue Proteins; D047071:beta-Glucans; D000099181:Dectin-1; C038459:curdlan; C033363:beta-1,3-glucan; C086400:chitotriosidase