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  Astrocytes in cell culture incorporate GM1 ganglioside.

Masco, D., Flott, B., & Seifert, W. (1989). Astrocytes in cell culture incorporate GM1 ganglioside. GLIA, 2(4), 231-240. doi:10.1002/glia.440020404.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002C-8A60-F Version Permalink: http://hdl.handle.net/11858/00-001M-0000-002C-8A63-9
Genre: Journal Article

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Masco, D.1, Author              
Flott, B.1, Author              
Seifert, W.1, Author              
Affiliations:
1Abteilung Neurobiologie, MPI for biophysical chemistry, Max Planck Society, ou_578620              

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 Abstract: Ganglioside GM1 3H-labelled at the terminal galactose was added to astrocyte cell cultures. GM1 incorporation was studied in the two typical forms of astrocytes in cell culture of flat and stellate morphology. There was a strong time- and concentration-dependent increase in GM1 incorporation for both cell types of astrocytes. The incorporation of GM1 into the stellate form increased continuously up to 48 h (maximum time studied), while the incorporation into the flat form reached a plateau at the same time. After 2 h of GM1 incubation additional gangliosides appeared; the latter resulted from the metabolism of the GM1 incorporated, indicating that astrocytes in cell culture can biosynthesize more complex gangliosides. To confirm that GM1 was indeed incorporated into astrocytes, two other different approaches were used. Astrocyte cells treated with 3H-GM1 were visualized using autoradiography. The specific marker for GM1, rhodamine-labelled choleratoxin, was used to detect the incorporated GM1 using fluorescence microscopy. In both cases GM1 treated cells were intensely labelled. These observations indicate that exogenous GM1 ganglioside can also be integrated into the astrocyte membranes as occurs in other types of cells and membranes.

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Language(s): eng - English
 Dates: 1989
 Publication Status: Published in print
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 Rev. Method: Peer
 Identifiers: DOI: 10.1002/glia.440020404
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Title: GLIA
Source Genre: Journal
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Pages: - Volume / Issue: 2 (4) Sequence Number: - Start / End Page: 231 - 240 Identifier: -