NDLI: Lymphocyte–HEV Interactions in Lymph Nodes of a Sulfotransferase-deficient Mouse

Content Provider	PubMed Central
Author	Van Zante, Annemieke Gauguet, Jean-marc Annette, Bistrup Tsay, Durwin Andrian, Ulrich H. Von Rosen, Steven D.
Abstract	The interaction of L-selectin expressed on lymphocytes with sulfated sialomucin ligands such as CD34 and GlyCAM-1 on high endothelial venules (HEV) of lymph nodes results in lymphocyte rolling and is essential for lymphocyte recruitment. HEC-GlcNAc6ST–deficient mice lack an HEV-restricted sulfotransferase with selectivity for the C-6 position of N-acetylglucosamine (GlcNAc). HEC-GlcNAc6ST−/− animals exhibit faster lymphocyte rolling and reduced lymphocyte sticking in HEV, accounting for the diminished lymphocyte homing. Isolated CD34 and GlyCAM-1 from HEC-GlcNAc6ST−/− animals incorporate ∼70% less sulfate than ligands from wild-type animals. Furthermore, these ligands exhibit a comparable reduction of the epitope recognized by MECA79, a function-blocking antibody that reacts with L-selectin ligands in a GlcNAc-6-sulfate–dependent manner. Whereas MECA79 dramatically inhibits lymphocyte rolling and homing to lymph nodes in wild-type mice, it has no effect on HEC-GlcNAc6ST−/− mice. In contrast, in vitro rolling on purified GlyCAM-1 from HEC-GlcNAc6ST−/− mice, although greatly diminished compared with that on the wild-type ligand, is inhibited by MECA79. Our results demonstrate that HEC-GlcNAc6ST contributes predominantly, but not exclusively, to the sulfation of HEV ligands for L-selectin and that alternative, non-MECA79–reactive ligands are present in the absence of HEC-GlcNAc6ST.
Related Links	http://dx.doi.org/10.1084/jem.20030057
Ending Page	1300
Page Count	12
Starting Page	1289
File Format	PDF
ISSN	00221007
e-ISSN	15409538
Journal	The Journal of Experimental Medicine
Issue Number	9
Volume Number	198
Language	English
Publisher	The Rockefeller University Press
Publisher Date	2003-11-03
Access Restriction	Open
Rights Holder	The Rockefeller University Press
Subject Keyword	Immunology Immunology and Allergy Research in Higher Education
Content Type	Text
Resource Type	Article
Subject	Immunology and Allergy Immunology

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