Phorbol esters stimulate a phospholipase D‐catalysed reaction with both ester‐ and ether‐linked phospholipids in HeLa cells

Abstract

The phorbol ester, 12-tetradecanoylphorbol-13-acetate (TPA), stimulated the accumulation of labelled phosphatidylethanol (PEth) in HeLa cells prelabelled with [3H]hexadecanol and incubated in the presence of ethanol. PEth formation involves a phospholipase D-catalysed phosphatidyl transferase reaction. [3H]Hexadecanol labelled both ester- and ether-derivatives of HeLa cell phospholipids and TPA stimulated the conversion of both classes of lipid to PEth.