Linked Life Data

16091127

Source:http://linkedlifedata.com/resource/pubmed/id/16091127

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
2005-8-10
pubmed:abstractText
Functional dendritic cells (DC) are professional antigen-presenting cells (APC) and can be generated in vitro from healthy as well as from leukaemic cells from AML patients giving rise to APC of leukaemic origin presenting leukaemic antigens. In a comparative methodological analysis of 50 AML samples, we could already show that leukaemia-derived DC can regularly be generated under serum-free culture conditions. In this study, we describe the generation and characterization of DC from different mononuclear cell (MNC) fractions from 24 myelodysplastic syndrome (MDS) patients under those different serum-free culture conditions, determine the optimal culture conditions and compare the results with that from 23 healthy donors. In parallel cultures, we compared DC harvests after 7- or 14-day culture, with total or adherent MNC or T-cell-depleted MNC or PB or BM-MNC, thawn or fresh MNC, in Xvivo or CellGro serum-free media, +/-10% autologous plasma or +/-FL. In detail, we could show that MDS-DC harvests compared to healthy DC were higher after 10- to 14-day culture; total or adherent PB or BM-MNC fractions yield comparable DC counts; however, from MACS-depleted MNC fractions or thawn MNC lower DC counts can be generated. Whereas the addition of FL increases the DC harvest, the addition of autologous plasma in many cases has inhibitory influence on DC maturation, CellGro and Xvivo media yield comparable DC counts. Optimal harvest of vital and mature DC from MDS samples was obtained with a GM-CSF, IL-4, FL and TNF-alpha containing serum-free Xvivo medium after 10-14 days of culture (18/26% DC; 54/64% vital DC; 59/51% mature DC were generated from MDS/healthy MNC samples). Surface marker profiles (e.g. costimulatory antigen expression) of DC obtained from MDS samples were comparable with that of healthy DC. The leukaemic derivation of MDS-DC was demonstrated by the persistence of the clonal cytogenetic aberration in the DC or by coexpression of leukaemic antigens on DC. Autologous T-cell activation of leukaemia-derived DC was demonstrated in cases with MDS. Autologous T cells proliferate and upregulate DC-contact-relevant antigens. We are the first who demonstrate that the generation of leukaemia-derived DC is feasible not only in AML but also in MDS under serum-free culture conditions giving rise to DC with comparable characteristics as healthy DC and offering an antileukaemia-directed immunotherapeutical vaccination strategy in AML and MDS.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jul
pubmed:issn
0300-9475
pubmed:author
pubmed:issnType
Print
pubmed:volume
62
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
75-85
pubmed:meshHeading
pubmed-meshheading:16091127-Adult, pubmed-meshheading:16091127-Aged, pubmed-meshheading:16091127-Antigens, CD, pubmed-meshheading:16091127-Bone Marrow Cells, pubmed-meshheading:16091127-Cell Culture Techniques, pubmed-meshheading:16091127-Culture Media, Serum-Free, pubmed-meshheading:16091127-Dendritic Cells, pubmed-meshheading:16091127-Female, pubmed-meshheading:16091127-Granulocyte-Macrophage Colony-Stimulating Factor, pubmed-meshheading:16091127-Humans, pubmed-meshheading:16091127-Interleukin-4, pubmed-meshheading:16091127-Leukemia, pubmed-meshheading:16091127-Leukocytes, Mononuclear, pubmed-meshheading:16091127-Lymphocyte Activation, pubmed-meshheading:16091127-Male, pubmed-meshheading:16091127-Middle Aged, pubmed-meshheading:16091127-Myelodysplastic Syndromes, pubmed-meshheading:16091127-T-Lymphocytes, pubmed-meshheading:16091127-Tumor Necrosis Factor-alpha, pubmed-meshheading:16091127-Vaccination
pubmed:year
2005
pubmed:articleTitle
Leukaemia-derived dendritic cells can be generated from blood or bone marrow cells from patients with myelodysplasia: a methodological approach under serum-free culture conditions.
pubmed:affiliation
Medical Department III, Klinikum Grosshadern, University of Munich, Munich, Germany.
pubmed:publicationType
Journal Article, Evaluation Studies