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Macrophage colony-stimulating activity is produced by three different EBV-transformed lymphoblastoid cell lines
G Reisbach1, L Hültner, B Kranz
1Gesellschaft für Strahlen and Umweltforschung, Munich, Federal Republic of Germany.
Cellular Immunology
|October 1, 1987
Abstract:
The lymphoblastoid cell lines BLY 9.84, Gl, and Pl constitutively release a colony-stimulating activity (CSA) which specifically stimulates murine macrophage progenitor cells in vitro. The biochemical characterization of BLY 9.84-derived CSA exhibits a molecular size of apparently 150-200 kDa even under dissociating conditions with 6 M guanidine hydrochloride or inhibition of glycosylation. Production of this CSA is inhibited by cycloheximide and its activity is destroyed by reduction with dithiothreitol. Replating experiments give evidence for a functional similarity with CSF-1 (macrophage colony-stimulating factor).