title: Cutting edge: immature dendritic cells generated from monocytes in the presence of TGF-beta 1 express functional C-C chemokine receptor 6.
abstract: Although CD34+ progenitor-derived immature dendritic cells (DCs) express CCR6, several recent studies reported that monocyte-derived immature DCs do not do so. We observed that DCs generated from monocytes in the presence of GM-CSF, IL-4, and TGF-beta 1 consistently responded to liver and activation-regulated chemokine (LARC, also known as macrophage inflammatory protein-3 alpha). These immature DCs expressed one class of high-affinity binding sites for LARC, and expressed both CCR6 mRNA and protein. Therefore, LARC-CCR6 interaction presumably also contributes to the regulation of trafficking of monocyte-derived DCs, and utilization of TGF-beta can potentially provide a ready source of CCR6+ monocyte-derived DCs for therapeutic purposes.
authors.affiliation: Laboratory of Molecular Immunoregulation, Division of Basic Sciences, Science Applications International Corp.-Frederick Cancer Research and Develeopment Center, National Cancer Institute, MD 21702, USA.
authors.forename: D
authors.initials: D
authors.lastname: Yang
authors.forename: O M
authors.initials: OM
authors.lastname: Howard
authors.forename: Q
authors.initials: Q
authors.lastname: Chen
authors.forename: J J
authors.initials: JJ
authors.lastname: Oppenheim
mesh_terms: D001665:Binding Sites / Q000276:immunology; D002454:Cell Differentiation / Q000276:immunology; D002478:Cells, Cultured; D054418:Chemokine CCL20; D019742:Chemokines, CC / Q000378:metabolism / Q000494:pharmacology; D018920:Coculture Techniques; D003713:Dendritic Cells / Q000166:cytology* / Q000276:immunology / Q000378:metabolism*; D016178:Granulocyte-Macrophage Colony-Stimulating Factor / Q000494:pharmacology; D006801:Humans; D015847:Interleukin-4 / Q000494:pharmacology; D019402:Macrophage Inflammatory Proteins; D009000:Monocytes / Q000166:cytology* / Q000378:metabolism; D012333:RNA, Messenger / Q000096:biosynthesis; D054399:Receptors, CCR6; D019707:Receptors, Chemokine / Q000096:biosynthesis* / Q000502:physiology; D016212:Transforming Growth Factor beta / Q000502:physiology*
chemical_list: C108355:CCL20 protein, human; C106311:CCR6 protein, human; D054418:Chemokine CCL20; D019742:Chemokines, CC; D019402:Macrophage Inflammatory Proteins; D012333:RNA, Messenger; D054399:Receptors, CCR6; D019707:Receptors, Chemokine; D016212:Transforming Growth Factor beta; D015847:Interleukin-4; D016178:Granulocyte-Macrophage Colony-Stimulating Factor