title: Kinetics of dendritic cells reconstitution and costimulatory molecules expression after myeloablative allogeneic haematopoetic stem cell transplantation: implications for the development of acute graft-versus host disease.
abstract: Allogeneic hematopoetic stem cell transplantation (HSCT) represents a unique opportunity to monitor the kinetics of reconstitution of dendritic cells (DCs) and their dynamics in distinct pathologies. We analyzed DCs reconstitution after myeloablative HSCT. We separately analyzed patients with acute GVHD. DCs were monitored from the earliest phase of hematopoetic reconstitution until day +365. Both myeloid DCs and plasmacytoid DCs appeared at earliest stages after engraftment and relative numbers within white blood cells compartment peaked between days 19-25 after HSCT. Their proportion then gradually declined and absolute numbers of both DC subsets remained lower than in controls during the whole follow-up. Patients with acute GVHD had significantly lower numbers of circulating DCs. Decrease in DC counts preceded onset of clinical symptoms by at least 24 h and was independent of corticosteroids administration. This study reveals quantification of plasmacytoid and myeloid DCs as a potential biomarker for the prediction of acute GVHD development.
authors.affiliation: Institute of Immunology, Charles University, 2nd Faculty of Medicine, University Hospital Motol, Prague, Czech Republic.
authors.forename: Rudolf
authors.initials: R
authors.lastname: Horváth
authors.forename: Vít
authors.initials: V
authors.lastname: Budinský
authors.forename: Jana
authors.initials: J
authors.lastname: Kayserová
authors.forename: Tomás
authors.initials: T
authors.lastname: Kalina
authors.forename: Renata
authors.initials: R
authors.lastname: Formánková
authors.forename: Jan
authors.initials: J
authors.lastname: Starý
authors.forename: Jirina
authors.initials: J
authors.lastname: Bartůnková
authors.forename: Petr
authors.initials: P
authors.lastname: Sedlácek
authors.forename: Radek
authors.initials: R
authors.lastname: Spísek
mesh_terms: D000293:Adolescent; D000328:Adult; D015703:Antigens, CD / Q000096:biosynthesis* / Q000276:immunology; D018122:B7-1 Antigen / Q000096:biosynthesis / Q000276:immunology; D051940:B7-2 Antigen / Q000096:biosynthesis / Q000276:immunology; D002452:Cell Count; D002648:Child; D002675:Child, Preschool; D015331:Cohort Studies; D003713:Dendritic Cells / Q000166:cytology / Q000276:immunology*; D005260:Female; D005434:Flow Cytometry; D006086:Graft vs Host Disease / Q000276:immunology* / Q000473:pathology; D018380:Hematopoietic Stem Cell Transplantation / Q000379:methods*; D006801:Humans; D007136:Immunoglobulins / Q000096:biosynthesis / Q000276:immunology; D016130:Immunophenotyping; D008297:Male; D008562:Membrane Glycoproteins / Q000096:biosynthesis / Q000276:immunology; D011446:Prospective Studies; D055815:Young Adult; D000097802:CD83 Antigen
chemical_list: D015703:Antigens, CD; D018122:B7-1 Antigen; D051940:B7-2 Antigen; D007136:Immunoglobulins; D008562:Membrane Glycoproteins; D000097802:CD83 Antigen; C497964:CD86 protein, human