ISSN:
1432-069X
Schlagwort(e):
Key words Alginate oligosaccharide
;
Endothelial cell
;
Proliferation
;
Migration
;
Vascular endothelial growth factor
Quelle:
Springer Online Journal Archives 1860-2000
Thema:
Medizin
Notizen:
Abstract Alginate oligosaccharides cleaved from alginic acid polysaccharides of seaweed were tested to determine their ability to enhance proliferation and migration of human umbilical vein endothelial cells. A mixture of alginate oligosaccharides (5 μg/ml in culture broth) stimulated endothelial cell growth, [3H]thymidine uptake and migration in the presence of recombinant vascular endothelial growth factor 165 (VEGF165). In contrast, a high concentration mixture of the oligosaccharides (∼100 μg/ml) suppressed cell growth. The stimulatory activity was comparable to that of heparin, with affinity to VEGF165, and decreased on heparin-induced stimulation. Each effective oligosaccharide had guluronic acid at the reducing end. A mixture of alginate oligosaccharides (5 μg/ml) and the most ¶effective fraction (1 μg/ml) stimulated endothelial cell migration. In the presence of VEGF and heparin, some alginate oligosaccharides with the peripheral guluronic acid demonstrated marked stimulatory effects, and one fraction also showed a migratory effect. These findings indicate novel activities of alginate oligosaccharide(s) in endothelial cell growth and migration and suggest synergistic and/or stabilizing effects on VEGF165-dependent stimulation of endothelial cells.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1007/s004030050451
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