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. 2007 Nov 27;581(28):5389-95.
doi: 10.1016/j.febslet.2007.10.039. Epub 2007 Oct 30.

TLR- and NOD2-dependent regulation of human phagocyte-specific chitotriosidase

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TLR- and NOD2-dependent regulation of human phagocyte-specific chitotriosidase

Marco van Eijk et al. FEBS Lett. .
Free article

Abstract

Human chitotriosidase is specifically expressed by phagocytes, has anti-fungal activity towards chitin-containing fungi in vitro and in vivo, and is part of innate immunity. We studied the effect of toll-like receptor (TLR)- and nucleotide-binding oligomerization domain (NOD)-2 triggering on chitotriosidase expression and release by phagocytes. We find that TLR, but not NOD2 activation, regulates chitotriosidase release by neutrophils. Furthermore, both TLR and NOD2 activation resulted in diminished induction by monocytes. Lastly, NOD2 activation, but not TLR stimulation, induces chitinase expression in macrophages. We conclude that phagocyte-specific regulation is important for efficient eradication of chitin-containing pathogens.

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