PMID- 25661728 OWN - NLM STAT- MEDLINE DCOM- 20161213 LR - 20181113 IS - 2042-0226 (Electronic) IS - 1672-7681 (Print) IS - 1672-7681 (Linking) VI - 13 IP - 2 DP - 2016 Mar TI - Phenotypic and functional comparison of two distinct subsets of programmable cell of monocytic origin (PCMOs)-derived dendritic cells with conventional monocyte-derived dendritic cells. PG - 160-9 LID - 10.1038/cmi.2014.135 [doi] AB - Dendritic cells (DCs) are professional antigen-presenting cells with the ability to induce primary T-cell responses. They are commonly produced by culturing monocytes in the presence of IL-4 and GM-CSF (cells produced in this manner are called conventional DCs). Here we report the generation of two functionally distinct subsets of DCs derived from programmable cells of monocytic origin (PCMOs) in the presence of IL-3 or tumor necrosis factor alpha (TNF-alpha). Monocytes were treated with macrophage colony-stimulating factor (M-CSF) and IL-3 for 6 days and then incubated with IL-4 and IL-3 (for IL-3 DCs) or with IL-4, GM-CSF and TNF-alpha (for TNF-alpha DCs) for 7 days. Monocytes were then loaded with tumor lysate (used as antigen), and poly (IratioC) was added. The maturation factors TNF-alpha and monocyte conditioned medium (MCM) were added on days 4 and 5, respectively. The phenotypes of the DCs generated were characterized by flow cytometry, and the cells' phagocytic activities were measured using FITC-conjugated latex bead uptake. T-cell proliferation and cytokine release were assayed using MTT and commercially available ELISA kits, respectively. We found that either IL-3DCs or TNF-alpha DCs induce T-cell proliferation and cytokine secretion; the cytokine release pattern showed reduced IL-12/IL-10 and IFN-gamma/IL-4 ratios in both types of DCs and in DC-primed T-cell supernatant, respectively, which confirmed that the primed T cells were polarized toward aTh2-type immune response. We concluded that PCMOs are a new cell source that can develop into two functionally distinct DCs that both induce a Th2-type response in vitro. This modality can be used as a DC-based immunotherapy for autoimmune diseases. FAU - Beikzadeh, Babak AU - Beikzadeh B AD - Department of Microbiology, Faculty of Veterinary Medicine, Urmia University, Urmia, Iran. FAU - Delirezh, Nowruz AU - Delirezh N AD - Department of Cellular and Molecular Biotechnology, Institute of Biotechnology, Urmia University, Urmia, Iran. LA - eng PT - Comparative Study PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20150209 PL - China TA - Cell Mol Immunol JT - Cellular & molecular immunology JID - 101242872 RN - 0 (Antigens, Neoplasm) RN - 0 (Cytokines) RN - O84C90HH2L (Poly I-C) SB - IM MH - Antigens, Neoplasm/immunology MH - Breast Neoplasms/*immunology/pathology MH - Coculture Techniques MH - Cytokines/*immunology MH - Dendritic Cells/*immunology/pathology MH - Female MH - Humans MH - Monocytes/*immunology/pathology MH - Poly I-C/pharmacology MH - Th2 Cells/immunology/pathology PMC - PMC4786623 EDAT- 2015/02/11 06:00 MHDA- 2016/12/15 06:00 PMCR- 2016/03/01 CRDT- 2015/02/10 06:00 PHST- 2014/07/01 00:00 [received] PHST- 2014/12/18 00:00 [revised] PHST- 2014/12/18 00:00 [accepted] PHST- 2015/02/10 06:00 [entrez] PHST- 2015/02/11 06:00 [pubmed] PHST- 2016/12/15 06:00 [medline] PHST- 2016/03/01 00:00 [pmc-release] AID - cmi2014135 [pii] AID - 10.1038/cmi.2014.135 [doi] PST - ppublish SO - Cell Mol Immunol. 2016 Mar;13(2):160-9. doi: 10.1038/cmi.2014.135. Epub 2015 Feb 9.