High-performance liquid chromatographic study of the regulation of phospholipid metabolism in cultured adrenocortical cells.
A rapid high-performance liquid chromatographic (HPLC) method for the separation of phospholipids was developed for minute samples of total lipids (ca. 200 micrograms). The method was applied to the study of the phospholipid metabolism in adrenocortical cell cultures. A complete separation of the different cellular phospholipid classes was achieved in 40 min. Good resolution of the phospholipid peaks was obtained, which allowed the collection of each individual class of phospholipids for further analysis of radioactivity and fatty acid composition by gas chromatography. When cells were incubated with [U-14C]glycerol or [U-14C]palmitate the bulk of the radioactivity was found in cellular phosphatidylcholines. Exogenous phospholipids were incorporated into cellular lipids to a large extent, however without an increase in the cellular phospholipid content. 12-O-Tetradecanoyl-phorbol-13-acetate induced a 20% increase in the polyunsaturated fatty acid content of the cellular phosphatidylethanolamines, but no change was detected in the cellular phosphatidylcholines. The developed method is well-suited to the study of the phospholipid metabolism in adrenocortical cells where the phospholipid metabolism is closely linked to the specialized functions of the cells.
Laboratoire de Biochimie des Interactions Cellulaires, Faculté des Sciences Mirande, Université de Bourgogne, Dijon, France.
Y
Y
Hathout
G
G
Maume
B F
BF
Maume
D000302:Adrenal Cortex / Q000166:cytology / Q000187:drug effects / Q000378:metabolism*; D000306:Adrenal Cortex Neoplasms / Q000378:metabolism; D000818:Animals; D002308:Cardiolipins / Q000378:metabolism; D002478:Cells, Cultured; D002851:Chromatography, High Pressure Liquid; D005990:Glycerol / Q000378:metabolism; D007202:Indicators and Reagents; D051379:Mice; D010168:Palmitates / Q000378:metabolism; D010713:Phosphatidylcholines / Q000378:metabolism; D010714:Phosphatidylethanolamines / Q000378:metabolism; D010743:Phospholipids / Q000032:analysis / Q000302:isolation & purification / Q000378:metabolism*; D013755:Tetradecanoylphorbol Acetate / Q000494:pharmacology; D014407:Tumor Cells, Cultured
D002308:Cardiolipins; D007202:Indicators and Reagents; D010168:Palmitates; D010713:Phosphatidylcholines; D010714:Phosphatidylethanolamines; D010743:Phospholipids; D013755:Tetradecanoylphorbol Acetate; D005990:Glycerol