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washing step
Hybridized slides are washed in a solution of water, 20× SSC, and 10% SDS, rinsed in water and 20× SSC, and dried via centrifugation for 2 min at 1000 rpm.
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stimulation step
The frozen MoDC are subsequently used for tumor peptide specific stimulation of autologous T lymphocytes at a ratio of 1 DC per 10 T cells.
Co-cultures led to antigen specific, IFN-? secreting T cells after 1 restimulation at a DC:T cell ratio of 1:20, as evaluated by IFN- ? Elispot, showing that the generated DC have good antigen presenting and co-stimulatory capacity.
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vaccination step
Advanced melanoma patients are vaccinated with the DC vaccine.
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vaccination step
Vaccination with a vaccine composed by autologous DCs pulsed with apoptotic autologous ovarian carcinoma cells. Apoptosis is induced by UV.
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vaccination step
Patients with advanced prostate carcinoma are vaccinated with the DC vaccine.
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vaccination step
The patients will be vaccined with the DC vaccine that consists of monocyte derived DC loaded with tumor lysate generated from the excised lesion.
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washing step
DCs are collected and washed 3 times with PBS.
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washing step
The pellets are washed with 70% Ethanol two times.
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adding substance to cell culture step
DCs are treated with zymolyase.
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genetic transformation step
Day 2: transfection
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resection step
Patients with stage III or stage IV melanoma will undergo surgical resection of a melanotic lesion.
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trypsinisation step
Trypsinize cells and fix in 4 % PFA (or formalin)
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genetic transformation step
Transfection of immature DCs with different constructs encoding for the oncogene Her-2/neu and as control PSA using the technology of Amaxa biosystems or an adeno virus Her-2 full length construct.
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genetic transformation step
Transfection of CD40L-encoding RNA along with the tumor RNA payload.
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stimulation step
DCs are stimulated over 6 hours.
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stimulation step
PBMC are stimulated in limiting dilution conditions with a pool of overlapping peptides (15 amino acids) covering the protein.
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stimulation step
This step is repeated several times to do several stimulations.
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adding substance to cell culture step
prepared DC will be used as DC vaccine, but also to expand T cells (isolated during the elutriation) for subsequent adoptive transfer
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staining step
Staining of GM-DC/Raw with anti-CD11c antibodies
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resection step
Patients will undergo surgical removal of a metastatic lesion.