PMID- 22643330 OWN - NLM STAT- MEDLINE DCOM- 20130325 LR - 20130307 IS - 1534-6080 (Electronic) IS - 0041-1337 (Linking) VI - 93 IP - 12 DP - 2012 Jun 27 TI - Reconstitution of 6-sulfo LacNAc dendritic cells after allogeneic stem-cell transplantation. PG - 1270-5 LID - 10.1097/TP.0b013e31824fd8b4 [doi] AB - BACKGROUND: Infections and acute graft-versus-host disease (GvHD) represent major complications of allogeneic stem-cell transplantation (SCT). Dendritic cells (DCs) display an extraordinary capacity to induce innate and adaptive immune responses. Therefore, they play a crucial role in the elimination of pathogens and in the pathogenesis of acute GvHD. 6-Sulfo LacNAc DCs (slanDCs) are a major subpopulation of human blood DCs with a high proinflammatory capacity. We investigated for the first time the reconstitution of slanDCs in the blood of patients after SCT and the modulation of their frequency by bacterial infection, cytomegalovirus (CMV) reactivation, and acute GvHD. METHODS: The frequency of slanDCs, CD1c myeloid DCs (mDCs), and plasmacytoid DCs (pDCs) in the peripheral blood was quantified by flow cytometry in 80 patients after SCT. To assess individual DC subsets, we used pregating of the HLADRLin subset and antibodies against slanDCs, blood DC antigen 1 (CD1c mDCs), and blood DC antigen 2 (pDCs). RESULTS: SlanDCs showed the slowest reconstitution in the first month after SCT compared with CD1c mDCs and pDCs. Interestingly, in the second and third months after SCT, their percentage steadily increased, and slanDCs were the most abundant DC subset. In addition, we observed a markedly reduced frequency of slanDCs in the blood of patients with bacterial infection, CMV reactivation, or severe acute GvHD. Furthermore, slanDCs showed the most prominent reduction after steroid treatment of acute GvHD. CONCLUSIONS: These results indicate that SCT-associated complications such as bacterial infection, CMV reactivation, and acute GvHD can significantly modulate the frequency of slanDCs. FAU - Mager, Konrad AU - Mager K AD - Department of Medicine I, University Hospital Carl Gustav Carus, Dresden, Germany. FAU - Wehner, Rebekka AU - Wehner R FAU - Bahr, Felix AU - Bahr F FAU - Oelschlagel, Uta AU - Oelschlagel U FAU - Platzbecker, Uwe AU - Platzbecker U FAU - Wermke, Martin AU - Wermke M FAU - Shayegi, Nona AU - Shayegi N FAU - Middeke, Jan Moritz AU - Middeke JM FAU - Radke, Jorgen AU - Radke J FAU - Rollig, Christoph AU - Rollig C FAU - Schetelig, Johannes AU - Schetelig J FAU - Thiede, Christian AU - Thiede C FAU - Ehninger, Gerhard AU - Ehninger G FAU - Schmitz, Marc AU - Schmitz M FAU - Bornhauser, Martin AU - Bornhauser M FAU - Tuve, Sebastian AU - Tuve S 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 (Amino Sugars) RN - 0 (Autoantibodies) RN - 0 (Steroids) SB - IM MH - Acute Disease MH - Adaptive Immunity/immunology MH - Adult MH - Aged MH - Amino Sugars/*metabolism MH - Autoantibodies/blood/immunology MH - Bacterial Infections/immunology MH - Cohort Studies MH - Cytomegalovirus Infections/immunology MH - Dendritic Cells/cytology/*immunology/*metabolism MH - Female MH - Graft vs Host Disease/drug therapy/*immunology MH - Humans MH - Immunity, Innate/immunology MH - Male MH - Middle Aged MH - Stem Cell Transplantation/*adverse effects MH - Steroids/therapeutic use MH - Transplantation, Homologous MH - Young Adult EDAT- 2012/05/31 06:00 MHDA- 2013/03/26 06:00 CRDT- 2012/05/31 06:00 PHST- 2012/05/31 06:00 [entrez] PHST- 2012/05/31 06:00 [pubmed] PHST- 2013/03/26 06:00 [medline] AID - 10.1097/TP.0b013e31824fd8b4 [doi] PST - ppublish SO - Transplantation. 2012 Jun 27;93(12):1270-5. doi: 10.1097/TP.0b013e31824fd8b4.