The identification of a distinct export step following the biosynthesis of leukotriene C4 by human eosinophils

BK Lam, WF Owen, KF Austen, RJ Soberman - Journal of Biological …, 1989 - ASBMB
We have examined the requirements for the export of leukotriene C 4 (LTC 4) from cultured
human eosinophils. To define saturability and kinetics of LTC 4 export, eosinophils were
interacted with leukotriene A 4 (LTA 4) at 37° C, and the methanolic extracts of the cell-
associated and extracellular compartments were then analyzed for LTC 4 content by reverse
phase high performance liquid chromatography with on-line monitoring of absorbance at
280 nm. When LTA 4 was added at concentrations from 0 to 100 εM for 10 min at 37° C, the …