NCIt definition : A recombinant form of the endogenous human cytokine erythropoietin (EPO) with erythropoiesis-stimulating
activity. Similar to EPO, epoetin zeta binds to and activates erythropoietin receptors
on the surface of committed erythroid progenitors in the bone marrow resulting in
their proliferation and differentiation into functional erythrocytes. This may enhance
red blood cell counts and hemoglobin levels. Epoetin zeta differs from other epoetins
in its glycosylation profile. EPO is a glycosylated polypeptide primarily produced
by renal peritubular cells and its synthesis is regulated by a serum oxygenation feedback
mechanism.;