PubMed · 11526936
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S Ijaz, N Anderson, E O Caul, R S Tedder. 2001-08-18. Implication in post-transfusion infection.. https://doi.org/10.1016/s0140-6736(01)05738-5
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Eosinophil-derived neurotoxin (EDN) is one of the four basic proteins stored in specific eosinophil granules. Here we demonstrate that EDN can also be detected at the surface of granulocytes. Reduction of EDN membrane expression after phosphatidylinositol-specific phospholipase C treatment suggests that a glycosylphosphatidylinositol (GPI) anchor is involved in the membrane association of EDN. The presence of a GPI anchor was confirmed by a lower expression of membrane EDN on granulocytes from patients with paroxysmal nocturnal hemoglobinuria which present cells lacking GPI anchor proteins. Furthermore, metabolic labeling with GPI anchor components supports biochemical evidence of GPI anchoring of EDN.