Various ‘dendritic cell antigens’ are already expressed on uncultured blasts in acute myeloid leukemia and myelodysplastic syndromes
| Autor: | Christoph Schmid, Stephany Kufner, Julia Dreyssig, Christine Grabrucker, Anja Liepert, Johanna Tischer, Helga Schmetzer, Hans-Jochem Kolb, Markus Freudenreich, Tanja Kroell, Helmut R. Salih, Andreas Kremser, Nina Scholl |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2011 |
| Předmět: |
Adult
Male Myeloid T-Lymphocytes Immunology Receptors Cell Surface Lymphocyte Activation Antigen hemic and lymphatic diseases medicine Humans Immunology and Allergy Lectins C-Type IL-2 receptor Antigens Aged Aged 80 and over CD40 biology Myelodysplastic syndromes Myeloid leukemia Dendritic Cells Dendritic cell Middle Aged medicine.disease Leukemia Myeloid Acute Leukemia Mannose-Binding Lectins medicine.anatomical_structure Oncology Myelodysplastic Syndromes biology.protein Female Immunotherapy Mannose Receptor |
| Popis: | Aim and methods: Leukemia-derived dendritic cells (DCleu) potentially present the whole leukemic antigen repertoire. We studied antigen-expression profiles of blasts/dendritic cells (DCs) generated from 137 acute myeloid leukemia (AML)/49 myelodysplastic syndromes (MDS) patients with six different DC-generating media by flow-cytometry combining expression of blast/maturation and DC antigens (DCA:CD1a,b,c, CD25, CD40, CD80, CD83, CD86, CD137-L and CD206). Results: First, DCA are regularly and variably expressed on uncultured blasts/mononuclear cells (MNCs). Individual patients’ DCA profiles must be evaluated before DC-culture to find suitable DCA to estimate quality/quantity of DC after culture. Second, after culture in every patient, at least one marker fulfilled these criteria. Third, different DC-generating methods showed varying efficiency to generate DC: not every method was always successful. Fourth, individual FACS-DCA profiles showed a successful DC/DCleu generation with at least one of three previously tested methods in every given AML/MDS case. Fifth, pooling results of all selected best methods in every given case, 28/30% DC were generated from AML/MDS samples: >60% viable DC, on average 49/56% mature DC and on average 36% of blasts were convertible to DCleu resulting in on average 49% DCleu of AML-DC. Conclusions: Individual DCA-expression profiles should be evaluated before culture to evaluate DC counts/subtypes (mature/viableDC, DCleu) in individual patients. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|