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  • Title: Role of the macrophage in erythropoiesis.
    Author: Sadahira Y, Mori M.
    Journal: Pathol Int; 1999 Oct; 49(10):841-8. PubMed ID: 10571815.
    Abstract:
    Macrophages, which are derived from precursor cells in the bone marrow, differentiate specifically under the influence of the local microenvironment. Resident macrophages in hematopoietic tissues can be distinguished from other stromal cells and monocytes by immunostaining with monoclonal antibody F4/80 and anti-Forssman glycosphingolipid antibody, respectively. Erythroid colony-forming units adhere to a resident macrophage and differentiate to erythroblasts in the presence of erythropoietin (EPO), resulting in the formation of an erythroblastic island. Resident macrophages play a supportive role in erythropoiesis, probably by preventing apoptosis of the erythroid precursors via adhesive interaction between very late activation antigen 4 and vascular cell adhesion molecule 1. Herein is proposed a model of erythropoiesis based on cooperative interaction between EPO and resident macrophages.
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