Abstract
Multiple cytokines regulate the development of erythrocytes. Increasing attention has been directed to the possible role of Fas and its cognate ligand (Fas-L), a subject of wide interest. Documentation of in vitro data supports the role of Fas and Fas-L in erythropoiesis. Several laboratories, including ours, investigated the opposing actions of erythropoietin (EPO) and stem cell factor (SCF) on Fas-mediated cell death of the erythroid cells. Only circumstantial in vivo evidence has accumulated concerning the issue. There are several reports suggesting that Fas-mediated cell death may have a role in some pathological conditions. Results of the accumulating findings and possible implications in clinical hematology are summarized in this review.
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