Cell surface mast cell proteoglycans identified as heparin-substituted syndecan-2
(English)Manuscript (preprint) (Other (popular science, discussion, etc.))
Connective tissue type mast cells isolated from the peritoneal cavity of mice and then cultured in vitro have been used to answer the question if one cell at a given time point can synthesize heparan sulfate chains with different structure. Characterization of cell surface proteoglycans made by the cells demonstrated that they were identical to syndecan-2, substituted with heparin chains. Ion exchange chromatography showed that the syndecan heparin chains behaved identically as heparin chains recovered from serglycin, inside the cells. This was also the case when mast cells from NDST2 deficient mice were studied. This time, syndecan-2 as well as serglycin derived polysaccharide chains had a lower but identical charge density. We conclude that mast cells only synthesize one kind of heparan sulfate/heparin chain at a time and that polysaccharide chains of identical structure will be found at the cell surface and inside the cell.
Peritoneum, mast cell, syndecan
Medical Biotechnology (with a focus on Cell Biology (including Stem Cell Biology), Molecular Biology, Microbiology, Biochemistry or Biopharmacy) Cell and Molecular Biology
Research subject Biochemistry
IdentifiersURN: urn:nbn:se:uu:diva-123469OAI: oai:DiVA.org:uu-123469DiVA: diva2:314349