Endothelial and fibroblast cell-derived heparan sulphate bind with differing affinity to basic fibroblast growth factor.

2.50
Hdl Handle:
http://hdl.handle.net/10541/92756
Title:
Endothelial and fibroblast cell-derived heparan sulphate bind with differing affinity to basic fibroblast growth factor.
Authors:
Pye, David A; Kumar, Shant
Abstract:
Heparan sulphate from endothelial cells (ECHS) has been shown to bind to bFGF with a lower affinity than that seen for 3T3 fibroblast HS (FHS). To investigate the structural reasons for the low affinity binding of ECHS to bFGF, enzymatic degradation of intact ECHS and FHS chains was undertaken. Filter binding assays showed ECHS heparinase III-resistant fragments 6-7 disaccharides in length and had affinity for bFGF equivalent to that of the intact ECHS chains. The largest resistant fragments from FHS, again 6-7 disaccharides in length, bound to bFGF with a similar affinity to the largest ECHS oligosaccharides, and they therefore have considerably lower affinity than seen for the intact FHS chains. Disaccharide compositional analysis of both ECHS and FHS oligosaccharides showed them to contain similar amounts of 2-O-, 6-O-, and N-sulphated disaccharides. These results suggest that the sulphation pattern within sulphated HS domains and their overall length are not the sole contributors to the binding of intact HS chains to bFGF. It is suggested that domain organisation and frequency of occurrence of large heparinase III-resistant oligosaccharides within intact chains play an important role not only in governing the maximum observed binding affinity of intact chains in the assay system used, but also in the regulation of other biological properties of HS.
Affiliation:
CRC Department of Drug Development, Christie Hospital, Manchester, United Kingdom. DPye@picr.man.ac.uk
Citation:
Endothelial and fibroblast cell-derived heparan sulphate bind with differing affinity to basic fibroblast growth factor. 1998, 248 (3):889-95 Biochem. Biophys. Res. Commun.
Journal:
Biochemical and Biophysical Research Communications
Issue Date:
30-Jul-1998
URI:
http://hdl.handle.net/10541/92756
DOI:
10.1006/bbrc.1998.9081
PubMed ID:
9704022
Type:
Article
Language:
en
ISSN:
0006-291X
Appears in Collections:
All Paterson Institute for Cancer Research

Full metadata record

DC FieldValue Language
dc.contributor.authorPye, David Aen
dc.contributor.authorKumar, Shanten
dc.date.accessioned2010-02-23T13:18:13Z-
dc.date.available2010-02-23T13:18:13Z-
dc.date.issued1998-07-30-
dc.identifier.citationEndothelial and fibroblast cell-derived heparan sulphate bind with differing affinity to basic fibroblast growth factor. 1998, 248 (3):889-95 Biochem. Biophys. Res. Commun.en
dc.identifier.issn0006-291X-
dc.identifier.pmid9704022-
dc.identifier.doi10.1006/bbrc.1998.9081-
dc.identifier.urihttp://hdl.handle.net/10541/92756-
dc.description.abstractHeparan sulphate from endothelial cells (ECHS) has been shown to bind to bFGF with a lower affinity than that seen for 3T3 fibroblast HS (FHS). To investigate the structural reasons for the low affinity binding of ECHS to bFGF, enzymatic degradation of intact ECHS and FHS chains was undertaken. Filter binding assays showed ECHS heparinase III-resistant fragments 6-7 disaccharides in length and had affinity for bFGF equivalent to that of the intact ECHS chains. The largest resistant fragments from FHS, again 6-7 disaccharides in length, bound to bFGF with a similar affinity to the largest ECHS oligosaccharides, and they therefore have considerably lower affinity than seen for the intact FHS chains. Disaccharide compositional analysis of both ECHS and FHS oligosaccharides showed them to contain similar amounts of 2-O-, 6-O-, and N-sulphated disaccharides. These results suggest that the sulphation pattern within sulphated HS domains and their overall length are not the sole contributors to the binding of intact HS chains to bFGF. It is suggested that domain organisation and frequency of occurrence of large heparinase III-resistant oligosaccharides within intact chains play an important role not only in governing the maximum observed binding affinity of intact chains in the assay system used, but also in the regulation of other biological properties of HS.en
dc.language.isoenen
dc.subject.mesh3T3 Cells-
dc.subject.meshAnimals-
dc.subject.meshAorta-
dc.subject.meshBinding Sites-
dc.subject.meshCarbohydrate Sequence-
dc.subject.meshCattle-
dc.subject.meshCells, Cultured-
dc.subject.meshDisaccharides-
dc.subject.meshEndothelium, Vascular-
dc.subject.meshFibroblast Growth Factor 2-
dc.subject.meshFibroblasts-
dc.subject.meshGlucosamine-
dc.subject.meshHeparitin Sulfate-
dc.subject.meshMice-
dc.subject.meshMolecular Sequence Data-
dc.subject.meshOligosaccharides-
dc.titleEndothelial and fibroblast cell-derived heparan sulphate bind with differing affinity to basic fibroblast growth factor.en
dc.typeArticleen
dc.contributor.departmentCRC Department of Drug Development, Christie Hospital, Manchester, United Kingdom. DPye@picr.man.ac.uken
dc.identifier.journalBiochemical and Biophysical Research Communicationsen

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