Fig. 3. Incorporation of glutamate radioactivity into lipid classes upon hypoxia in neuronal cell line.
SH-SY5Y cells were preconditioned in serum-free MEM medium under normoxic (19% O2) or hypoxic (1% O2) conditions for 24 h, and for another 18 h with 2 µCi of [U-14C]glutamate. Lipids were extracted from cells after 42 h of incubation using chloroform/methanol by the Folch protocol, separated by TLC and radioactivity of individual lipid classes was analyzed by liquid scintillation counting. Abbreviations are: CE, cholesteryl esters; TG, TAGs; FFA, free fatty acids; DAG, diacylglycerols; Ch, cholesterol; PL, phospholipids; * - significantly different as compared to 19% O2. Values are mean ± SD, n = 3.