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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Spontaneous glycosylation of glycosaminoglycan substrates by adherent fibroblasts.

SV40-transformed mouse fibroblasts migrate upon, and spontaneously glycosylate, plastic substrates derivatized with chondroitin-6 sulfate and hyaluronic acid. Autoradiography of cultures prelabeled with 3H-glucose and 3H-galactose demonstrates the presence of silver grains near adherent cells. Silver grains are particularly dense near cells cultured on chondroitin sulfate. No significant grains are observed on control dishes or dishes derivatized with polygalacturonic acid. Radioactive material left by cells is not removed by boiling the dishes in 8 M urea and 10% sodium dodecylsulfate, suggesting that it is covalently linked to the derivatized plastic. Acid hydrolysis shows that the radioactive material consists of glucuronic acid and N-acetylglucosamine when the prelabeled cells are cultured on hyaluronic acid. When cells are cultured on chondroitin sulfate, the radioactive product consists only of glucuronic and and N-acetylgalactosamine sulfate. Sonicates of prelabeled cells or the supernatants from cultures of intact prelabeled cells add no SDS-urea-resistant radioactivity to dishes derivatized with these glycosaminoglycans.[1]


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