PMID- 19384158 OWN - NLM STAT- MEDLINE DCOM- 20090514 LR - 20171116 IS - 1534-6080 (Electronic) IS - 0041-1337 (Linking) VI - 87 IP - 8 DP - 2009 Apr 27 TI - Extracorporeal photopheresis efficiently impairs the proinflammatory capacity of human 6-sulfo LacNAc dendritic cells. PG - 1134-9 LID - 10.1097/TP.0b013e31819e02d4 [doi] AB - BACKGROUND: Extracorporeal photopheresis (ECP) emerged as a promising treatment modality for steroid-refractory graft-versus-host disease (GVHD), which represents a major complication of allogeneic hematopoietic stem-cell transplantation. Dendritic cells (DCs) display an extraordinary capacity to induce T-cell responses and play a crucial role in the initiation and maintainance of GVHD. This study evaluated the direct impact of ECP on the proinflammatory capacity of 6-sulfo LacNAc (slan) DCs, representing a major subpopulation of human blood DCs. METHODS: SlanDCs were isolated from ECP-treated or untreated blood of healthy donors or GVHD patients by immunomagnetic isolation. The maturation of slanDC was determined by flow cytometry. Cytokine production of slanDCs was measured by enzyme-linked immunosorbent assay. SlanDC-mediated T-cell proliferation was evaluated by H-thymidine incorporation. SlanDC-mediated T-cell programming was determined by flow cytometry. RESULTS: ECP efficiently impairs the spontaneous maturation and secretion of proinflammatory tumor necrosis factor-alpha, interleukin-1beta, and interleukin-12 by slanDCs. Furthermore, ECP markedly inhibits slanDC-induced proliferation of CD4 and CD8 T cells and polarization of naive CD4 T lymphocytes into Th1 cells. CONCLUSIONS: These novel findings indicate that ECP efficiently impairs the proinflammatory capacity of slanDCs, which may represent an important mechanism for the therapeutic efficiency of ECP in GVHD. FAU - Gerner, Michael AU - Gerner M AD - Institute of Immunology, Medical Faculty, Technical University of Dresden, Dresden, Germany. FAU - Holig, Kristina AU - Holig K FAU - Wehner, Rebekka AU - Wehner R FAU - Zhao, Senming AU - Zhao S FAU - Schakel, Knut AU - Schakel K FAU - Bachmann, Michael Philipp AU - Bachmann MP FAU - Rieber, Ernst Peter AU - Rieber EP FAU - Bornhauser, Martin AU - Bornhauser M FAU - Schmitz, Marc AU - Schmitz M LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Transplantation JT - Transplantation JID - 0132144 RN - 0 (6-sulfo-LacNac) RN - 0 (ABO Blood-Group System) RN - 0 (Amino Sugars) RN - 0 (Carrier Proteins) RN - 0 (Membrane Proteins) RN - 0 (PLVAP protein, human) RN - 0 (Platelet Endothelial Cell Adhesion Molecule-1) RN - 0 (Proteome) RN - 0 (von Willebrand Factor) SB - IM MH - ABO Blood-Group System/*analysis/immunology MH - Amino Sugars/*analysis MH - Carrier Proteins/analysis/immunology MH - Dendritic Cells/*physiology/radiation effects MH - Humans MH - Immunoblotting MH - Inflammation/*physiopathology/prevention & control MH - Membrane Proteins/analysis/immunology MH - *Photopheresis MH - Platelet Endothelial Cell Adhesion Molecule-1/analysis/immunology MH - Proteome MH - von Willebrand Factor/analysis/immunology EDAT- 2009/04/23 09:00 MHDA- 2009/05/15 09:00 CRDT- 2009/04/23 09:00 PHST- 2009/04/23 09:00 [entrez] PHST- 2009/04/23 09:00 [pubmed] PHST- 2009/05/15 09:00 [medline] AID - 00007890-200904270-00006 [pii] AID - 10.1097/TP.0b013e31819e02d4 [doi] PST - ppublish SO - Transplantation. 2009 Apr 27;87(8):1134-9. doi: 10.1097/TP.0b013e31819e02d4.