|
|
|
|
|
|
|
|
|||||
| Home Help Feedback Subscriptions Archive Search Table of Contents | |||||
Journal of Cell Science, Vol 111, Issue 7 1021-1029, Copyright © 1998 by Company of Biologists
JOURNAL ARTICLES |
LE Esford, A Maiti, SA Bader, F Tufaro and P Johnson
Department of Microbiology, University of British Columbia, Vancouver, B.C. V6T 1Z3, Canada.
CD44 is a widely expressed cell adhesion molecule that binds the extracellular matrix component, hyaluronan, in a tightly regulated manner. Previous studies have shown that the CD44-hyaluronan interaction is affected by changes in the glycosylation state of CD44. In this study, we take advantage of several well-characterized murine L cell mutants defective in heparan sulfate synthesis (gro2C cells), heparan sulfate and chondroitin sulfate synthesis (sog9 cells), and glycosaminoglycan and oligosaccharide processing (sog8 cells) to assess the effects of these defects on the hyaluronan binding ability of CD44. In parental L cells and gro2C cells, CD44 was induced to bind hyaluronan after addition of the activating, anti-CD44 monoclonal antibody, IRAWB 14. By contrast, no inducible binding was observed in sog9 cells. Treatment of L cells with sodium chlorate, an inhibitor of sulfation, also abolished inducible hyaluronan binding. However, inducible and some constitutive hyaluronan binding was observed in sog8 cells. This indicates that sulfation and, in particular, the addition of chondroitin sulfate are required for inducible hyaluronan binding by CD44 in L cells. However, in the absence of fully processed oligosaccharides, chondroitin sulfate is not essential for hyaluronan binding, indicating that the effect of chondroitin sulfate is dependent upon the glycosylation state of the cell. Thus, in addition to glycosylation, chondroitin sulfate biosynthesis is an important post-translational modification that can affect the hyaluronan binding ability of CD44.
This article has been cited by other articles:
|
|
 |
|
  I. Gal, J. Lesley, W. Ko, A. Gonda, R. Stoop, R. Hyman, and K. Mikecz Role of the Extracellular and Cytoplasmic Domains of CD44 in the Rolling Interaction of Lymphoid Cells with Hyaluronan under Physiologic Flow J. Biol. Chem., March 21, 2003; 278(13): 11150 - 11158. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 N. Kimura, Y. Konno, K. Miyoshi, H. Matsumoto, and E. Sato Expression of Hyaluronan Synthases and CD44 Messenger RNAs in Porcine Cumulus-Oocyte Complexes During In Vitro Maturation Biol Reprod, March 1, 2002; 66(3): 707 - 717. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 K. L. Brown, A. Maiti, and P. Johnson Role of Sulfation in CD44-Mediated Hyaluronan Binding Induced by Inflammatory Mediators in Human CD14+ Peripheral Blood Monocytes J. Immunol., November 1, 2001; 167(9): 5367 - 5374. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 A. Maiti, G. Maki, and P. Johnson TNF- Induction of CD44-Mediated Leukocyte Adhesion by Sulfation Science, October 30, 1998; 282(5390): 941 - 943. [Abstract] [Full Text]
|
|
|
|
|
|
J. Cichy and E. Pure Oncostatin M and Transforming Growth Factor-beta 1 Induce Post-translational Modification and Hyaluronan Binding to CD44 in Lung-derived Epithelial Tumor Cells J. Biol. Chem., June 9, 2000; 275(24): 18061 - 18069. [Abstract] [Full Text] [PDF]
|
|
