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  • Title: Analysis of F9 embryonal carcinoma cell lactosaminoglycans in relation to their differential expression during induction of differentiation.
    Author: Rusciano D, Terrana B.
    Journal: Biochim Biophys Acta; 1988 Jan 12; 964(1):8-18. PubMed ID: 3334875.
    Abstract:
    Teratocarcinoma stem cells can be used to study the events related to early differentiation, and many cell surface changes have been described which correlate with the different stages of early embryogenesis. In this work we analyze the [3H]galactose-labeled glycopeptides derived from the mouse embryonal carcinoma cell line F9. We show that the high-molecular-weight glycopeptides typical of embryonal carcinoma cells are composed of two distinct molecular weight classes, namely H1 and H3, and that retinoic acid-induced differentiation determines a relative increase of the larger peak (H1) which is mainly due to a decrease in the expression of H3 species. We also show that, beside this decrease, there is a greater increase in the expression of lower-molecular-weight species. Furthermore, we present evidence that H1 and H3 species are polylactosaminoglycans N-linked to the peptidic backbone, and that induction of differentiation determines slight modifications in the structure of such species.
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