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Science 6 April 1984:
Vol. 224. no. 4644, pp. 72 - 74
DOI: 10.1126/science.6322307
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Articles

Science, Vol 224, Issue 4644, 72-74
Copyright © 1984 by American Association for the Advancement of Science

articles

Schwann cell galactocerebroside induced by derivatives of adenosine 3',5'-monophosphate

G Sobue and D Pleasure

Indirect immunofluorescence was used to show the presence of galactocerebroside (galC), a lipid found in myelin, on the surface of about half of the Schwann cells isolated from neonatal rat sciatic nerves and cultured for 1 day without neurons. By day 4 in vitro, the Schwann cells had all lost their surface galC. Three days after beginning treatment with 10(-3) molar 8-bromo-adenosine 3',5'-monophosphate (8-bromo cyclic AMP) or N6,O2'-dibutyryl adenosine 3',5'-monophosphate (dibutyryl cyclic AMP), galC reappeared on the Schwann cells, and 2 days later 48 percent of the cultured Schwann cells showed surface galC. Tritium from tritiated D-galactose was incorporated into galC by the 8-bromo cyclic AMP-and dibutyryl cyclic AMP-treated cultures at a rate 15 times the control rate.


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