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. 1979 Dec 1;183(3):669–681. doi: 10.1042/bj1830669

Isolation of 35S- and 3H-labelled proteoglycans from cultures of human embryonic skin fibroblasts.

L Cöster, I Carlstedt, A Malmström
PMCID: PMC1161649  PMID: 120197

Abstract

35SO42- - and [3H]-leucine-labelled proteoglycans were isolated from the medium of a fibroblast culture, from an EDTA extract of the monolayer, and from consecutive dithiothreitol and guanidine hydrochloride extracts of the cells. Proteoglycans of different sizes were isolated from the extracts by gel chromatography on Sepharose 4B. In the medium and the EDTA extract the largest proteoglycans contained only 35S-labelled galactosaminoglycan, whereas all other fractions contained in addition heparan [35S-labelled galactosaminoglycan, whereas all other fractions contained in addition heparin [35S]sulphate. The galactosaminoglycan-containing proteoglycans of the various extracts were separated into a larger component, containing chondroitin sulphate-like side chains, and a smaller component, containing dermatan sulphate. The larger proteoglycan of the medium showed reversible association-dissociation behaviour when chromatographed on Sepharose CL2B in phosphate-buffered saline and 4M-guanidine hydrochloride respectively. This property remained after removal of extraneous proteins by CsCl-density-gradient centrifugation in guanidine hydrochloride. The association was markedly increased by the addition of high-molecular-weight hyaluronic acid.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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