PMID- 19219529 OWN - NLM STAT- MEDLINE DCOM- 20090402 LR - 20240321 IS - 1661-4917 (Electronic) IS - 0004-069X (Print) IS - 0004-069X (Linking) VI - 57 IP - 1 DP - 2009 Jan-Feb TI - Biological activity of dendritic cells generated from cord blood CD34+ hematopoietic progenitors in IL-7- and IL-13-conditioned cultures. PG - 67-74 LID - 10.1007/s00005-009-0005-1 [doi] AB - INTRODUCTION: Dendritic cells (DCs) are required for initiation of the immune response and may therefore be used for the production of cancer vaccines. As mature DCs (mDCs) are the most potent antigen-presenting cells, there is increasing interest in generating them ex vivo. The present study was designed to obtain mDCs from CD34+ hematopoietic progenitors by culturing them in different media. MATERIALS AND METHODS: Cord blood CD34+ hematopoietic progenitors were expanded for 7 days in FST medium containing fms-related tyrosine kinase 3 ligand (Flt3-L), stem cell factor (SCF), and thrombopoietin (TPO). Then the cells were divided into three parts and cultured for 21 days in different media: FST medium or FST enriched in interleukin (IL)-3 (FST3 medium) or supplemented with IL-7 and IL-13 (FST713 medium). At the end of culture part of the cells was harvested, counted, and analyzed while the other part was matured with proinflammatory cytokines for 2 days. The cells' phenotypes, ability to induce proliferation of allogeneic lymphocytes in the mixed lymphocyte reaction (allo-MLR), chemotaxis, phagocytosis, and O2(-) production were determined. RESULTS: The average fold increase of DCs at the end of culture in FST medium was 127, in FST3 1043, and in FST713 71. In comparison with the other media, FST713 medium supported the generation of mDCs that were characterized by higher expression of CD83, costimulatory molecules, and HLA-DR, enhanced ability to induce allo-MLR and migration to -macrophage inflammatory protein (MIP) 3beta poor phagocytosis, and O2(-) production. CONCLUSIONS: This study indicates that FST713 medium allows the generation of limited numbers of more mature DCs, while FST3 medium leads to the production of immature DCs in high numbers. FAU - Mytar, Bozenna AU - Mytar B AD - Department of Clinical Immunology, Polish-American Institute of Pediatrics, Jagiellonian University Medical College, Cracow, Poland. FAU - Stec, Malgorzata AU - Stec M FAU - Weglarczyk, Kazimierz AU - Weglarczyk K FAU - Zembala, Marek AU - Zembala M LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20090214 PL - Poland TA - Arch Immunol Ther Exp (Warsz) JT - Archivum immunologiae et therapiae experimentalis JID - 0114365 RN - 0 (CCR7 protein, human) RN - 0 (Chemokine CCL19) RN - 0 (Culture Media) RN - 0 (HLA-DR Antigens) RN - 0 (Interleukin-3) RN - 0 (Interleukin-7) RN - 0 (Membrane Proteins) RN - 0 (Receptors, CCR7) RN - 0 (Stem Cell Factor) RN - 0 (flt3 ligand protein) RN - 11062-77-4 (Superoxides) RN - 9014-42-0 (Thrombopoietin) SB - IM MH - Cell Differentiation/drug effects MH - Cells, Cultured/drug effects MH - Chemokine CCL19/pharmacology MH - Chemotaxis/drug effects MH - Culture Media/pharmacology MH - Dendritic Cells/*immunology MH - Fetal Blood/*cytology MH - HLA-DR Antigens/biosynthesis MH - Hematopoietic Stem Cells/*cytology/drug effects MH - Humans MH - Immunophenotyping MH - Infant, Newborn MH - Interleukin-3/*pharmacology MH - Interleukin-7/*pharmacology MH - Lymphocyte Activation MH - Lymphocyte Culture Test, Mixed MH - Membrane Proteins/pharmacology MH - Phagocytosis MH - Receptors, CCR7/biosynthesis/genetics MH - Stem Cell Factor/pharmacology MH - Superoxides/metabolism MH - Thrombopoietin/pharmacology PMC - PMC2771131 EDAT- 2009/02/17 09:00 MHDA- 2009/04/03 09:00 PMCR- 2009/11/01 CRDT- 2009/02/17 09:00 PHST- 2008/02/11 00:00 [received] PHST- 2008/12/19 00:00 [accepted] PHST- 2009/02/17 09:00 [entrez] PHST- 2009/02/17 09:00 [pubmed] PHST- 2009/04/03 09:00 [medline] PHST- 2009/11/01 00:00 [pmc-release] AID - 5 [pii] AID - 10.1007/s00005-009-0005-1 [doi] PST - ppublish SO - Arch Immunol Ther Exp (Warsz). 2009 Jan-Feb;57(1):67-74. doi: 10.1007/s00005-009-0005-1. Epub 2009 Feb 14.