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injection step
Patients receive V administrations with eventual additional ones depending on clinical outcome.
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isolation of cell population step
PBMC are isolated from buffy coats by density gradient centrifugation using Biocoll (BIOCHROM).
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leukapheresis step
Leukapheresis will be performed on the following day.
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leukapheresis step
Patients will undergo leukapheresis.
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leukapheresis step
A HLA-A2 positive healthy donor undergoes leukapheresis.
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leukapheresis step
HLA-A1 and/or HLA-A2 positive patients with stage III/IV melanoma undergo leukapheresis.
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material processing step
Patients will undergo lymphodepletion prior to vaccination and prior to adoptive transfer of autologous T cells.
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material component separation step
CD8 T cells are purified using MACS cell separation.
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establishing cell culture step
The monocytes are cultured for five days to immature DC (imDC´s).
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induction of process step
Differentiation of monocytes into dendritic cells is promoted by addition of granulocyte-macrophage colony-stimulating factor (GMCSF 1000U/ml, Chemicon) and recombinant IL-4 (1000U/ml, R&D Systems) for 5 days.
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isolation of cell population step
Cells are subsequently separated into monocytes and lymphocytes by elutriation in a closed system (Elutra).
The two most monocyte-rich fractions collected contained > 80% monocytes, the fraction richest in lymphocytes contained > 90% lymphocytes and viability in both fractions was > 95%.
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isolation of cell population step
Monocytes are isolated from PBMC using MACS anti-CD14 microbeads and a Midi-MACS® magnetic cell sorting device (both from Miltenyi Biotec, Bergisch- Gladbach,Germany).
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adding substance to cell culture step
Yeasts/spores are biotinylated using 10 mg/ml sulfo-NHS-LC-biotin (Sigma-Aldrich) in 50 mM NaHCO3 pH 8.5 for 2 hours at 4°C. The remaining reactive biotin molecules are inactivated by incubation in 100 mM Tris-HCl pH 8.0 for 40 minutes at 4°C. DCs are then treated with biotinylated spores/yeasts. After 1 hour, cells are permeabilized and labeled with aHLA-DR-FITC. After zymolyase treatment, intracellular yeasts/spores are detected using APC-labeled streptavidin and analyzed by flow cytometry.
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extraction step
After the centrifugation (10’ at 5000 rpm) the supernatant is transferred into a pre-spun (5’ at 1500 rpm) 50 ml Phase Lock Gel tube (Eppendorf 0032 005.330) and 4 ml of chloroform (Fischer BP1145-1) are added into the falcon.
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cell fixation step
Day 1: 4 x 10^6 293 FT in 10 ml DMEM (+10 % FCS (Tet-frei), +P/S) in a 10cm plate
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cell fixation step
Cells, lysated with a hypotonic solution (KCl 0.05%), are plated on YPD.
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sample preparation step
Indirect labeling method. Briefly, the reactive amine derivative of dUTP, 5-(3-
aminoallyl)-2?-deoxyuridine 5?-triphosphate (Sigma) is incorporated into cDNA using the Superscript II reverse transcriptase (Invitrogen) and oligo dT (Invitrogen) and random examers (Roche). After synthesis of cDNA (2–3 h at 42 °C), RNA is hydrolyzed by addition of sodium hydroxide and EDTA to a final concentration of 100 mM and 10 mM, respectively and incubated at 65 °C for 10 min. The hydrolysis reaction is neutralized with 1 M HEPES. After removing free nucleotides by purif
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adding substance to cell culture step
On day 5 cells are counted and pulsed with tumor antigen derived peptides (one per culture) at a concentration of 5 µg/mL in approximately 5 mL and at a cell density of 20 x 10e6/mL for 1 h.
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induction of process step
CD1 molecules are refolded in vitro.
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adding substance to cell culture step
When the pellets are dry, they are resuspended in RNase-free water.