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2013 | 85 | 12 | 714-720
Article title

Evaluation of immature monocyte-derived dendritic cells generated from patients with colorectal cancer

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Dendritic cells are heterogeneous population of the leukocytes and most potent APC in activation of naive T lymphocytes. Therefore the DCs generated in vitro are under research for their application in anti-tumor immunotherapy. The aim of the study was generation of the immature dendritic cells from peripheral blood monocytes collected from colorectal cancer patients and comparison of their ability to endocytosis, cytokine production and immunophenotype to DCs generated from healthy donors. Material and methods. 16 adenocarcinoma stage II patients were included in the study. Dendritic cells were generated in the presence of rhGM-CSF and IL-4. PBMC were isolated from the blood of patients and 16 healthy donors - control group. Immunophenotype, ability of endocytosis of Dextran- FITC as well as intracellular IL-12 expression of the generated dendritic cells was measured using flow cytometry. The cytokines (IL-6, IL-10, IL-12p70, IFN-γ) concentration in the supernatants of DCs culture was measured by ELISA. Results. The percentage of the immature dendritic cells and expression of CD206 and CD209 antigens was significantly higher in patients group (p <0.05 and p <0.001 respectively). Significantly (p <0.001) higher expression of the antigens which initiate the Th2 immune response (CD80-/CD86 + and B7-H2 + / CD209 +) was in the patients group. There were no differences in endocytosis ability and the cytokines (IL-6, IL-10, IL-12p70, IFN-γ) concentration between investigated groups. Conclusions. High immature markers expression on the generated dendritic cells together with identical endocytosis ability in patients group is advantageous in antitumor autologous cells immunotherapy planning. However there is one troubling fact - high expression of markers, which may induce tolerance to particular antigen. It seems to be more reasonable to use the autologous DCs in the antitumor immunotherapy, especially due to the incompatibility in allogenic cells in the context of HLA complex.
Physical description
1 - 12 - 2013
25 - 01 - 2014
  • Laboratory of Biostructure, Human Anatomy Department, Medical University in Lublin
  • Laboratory of Biostructure, Human Anatomy Department, Medical University in Lublin
  • Department of General and Transplant Surgery and Nutritional Treatment, Medical University in Lublin
  • Department of General and Oncological Surgery, District Specialist Hospital in Lublin
  • Department of General and Transplant Surgery and Nutritional Treatment, Medical University in Lublin
  • Department of Clinical Immunology, Medical University in Lublin
  • Department of General and Gastroenterological Surgery and Surgical Oncology of the Alimentary Tract, Medical University in Lublin
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