6533b7cefe1ef96bd12571e1

RESEARCH PRODUCT

AN IL-6/IL-6 SOLUBLE RECEPTOR (IL-6R) HYBRID PROTEIN (H-IL-6) INDUCES EPO-INDEPENDENT ERYTHROID DIFFERENTIATION IN HUMAN CD34+CELLS

Marta BaiocchiOttaviano Serlupi-crescenziMauro BiffoniIsabella MarcucciStefan Rose-john

subject

ErythrocytesTime FactorsMyeloidCellular differentiationInterleukin 6Antigens CD34BiochemistryCulture Media Serum-FreeSerum-Freehemic and lymphatic diseasesReceptorsLeukocytesImmunology and AllergyErythropoiesisGlycophorinsStem Cell FactorbiologyChemistryCord bloodCell DifferentiationHematologyFetal BloodFlow CytometryEndothelial stem cellHaematopoiesismedicine.anatomical_structureGlycophorinCD34+medicine.drugRecombinant Fusion ProteinsMononuclearImmunologyCD13 AntigensmedicineHumansGlycophorinAntigensProgenitor cellErythropoietinMolecular BiologyInterleukin 3Interleukin-6CD34+; Cord blood; Erythropoiesis; Interleukin 6; Stem cell factor; Antigens CD34; CD13 Antigens; Cell Differentiation; Culture Media Serum-Free; Erythrocytes; Erythropoietin; Fetal Blood; Flow Cytometry; Glycophorin; Hematopoietic Stem Cells; Humans; Interleukin-6; Leukocytes Mononuclear; Peptides; Receptors Interleukin-6; Recombinant Fusion Proteins; Stem Cell Factor; Time Factors; Immunology and Allergy; Immunology; Biochemistry; Hematology; Molecular BiologyHematopoietic Stem CellsReceptors Interleukin-6Molecular biologyCulture MediaErythropoietinLeukocytes Mononuclearbiology.proteinCD34Peptides

description

H-IL-6 is a hybrid protein constructed to contain IL-6 and its soluble receptor linked by a flexible peptide chain. Here we show that H-IL-6 strongly enhances proliferation of human CD34(+)cells in serum-free liquid culture, and that the majority of the cells generated belong to the erythroid lineage, being positive for the marker Glycophorin A. Conversely, H-IL-6 does not increase the number of myeloid, CD13-positive cells. Comparable effects are observed on progenitors from cord blood and adult peripheral blood. Therefore, H-IL-6 triggers an erythroid-inducing signal in haematopoietic progenitor cells, independently from erythropoietin (EPO).

yearjournalcountryeditionlanguage
2000-09-08Cytokine
https://doi.org/10.1006/cyto.2000.0723