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Updated: Oct 13, 2026

Pan-myeloid Differentiation of Human Cord Blood Derived CD34+ Hematopoietic Stem and Progenitor Cells
Published on: August 9, 2019
Kell is not restricted to the erythropoietic lineage but is also expressed on myeloid progenitor cells
1Department of Blood Group Serology and Transfusion Medicine, University Hospital, Graz, Austria.
Anti-Kell antibodies have been shown to suppress fetal erythropoiesis, but little is known about their effect on myelopoiesis. We analysed the effect of Kell-related antibodies on granulocyte-macrophage colony-forming units (CFU-GM) growth in semisolid medium using peripheral blood mononuclear cells (PBMNCs) from haematologically normal individuals. In addition to its inhibitory effect on erythroid burst-forming units (BFU-E) growth, anti-Kell antibodies significantly reduced CFU-GM colony formation from Kell-positive individuals but not from Kell-negative donors. Moreover, anti-cellano and anti-Kpb antibodies also inhibited the growth of CFU-GM from antigen-positive MNCs. These data indicate that Kell is not restricted to erythroid blood cells, but is also expressed on myeloid progenitor cells.
Anti-Kell antibodies have been shown to suppress fetal erythropoiesis, but little is known about their effect on myelopoiesis. We analysed the effect of Kell-related antibodies on granulocyte-macrophage colony-forming units (CFU-GM) growth in semisolid medium using peripheral blood mononuclear cells (PBMNCs) from haematologically normal individuals. In addition to its inhibitory effect on erythroid burst-forming units (BFU-E) growth, anti-Kell antibodies significantly reduced CFU-GM colony formation from Kell-positive individuals but not from Kell-negative donors. Moreover, anti-cellano and anti-Kpb antibodies also inhibited the growth of CFU-GM from antigen-positive MNCs. These data indicate that Kell is not restricted to erythroid blood cells, but is also expressed on myeloid progenitor cells.
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