PMID- 21647537 OWN - NLM STAT- MEDLINE DCOM- 20120325 LR - 20231213 IS - 1528-3658 (Electronic) IS - 1076-1551 (Print) IS - 1076-1551 (Linking) VI - 17 IP - 9-10 DP - 2011 Sep-Oct TI - Effect of oxygen levels on the physiology of dendritic cells: implications for adoptive cell therapy. PG - 910-6 LID - 10.2119/molmed.2011.00031 [doi] AB - Dendritic cell (DC)-based adoptive tumor immunotherapy approaches have shown promising results, but the incidence of tumor regression is low and there is an evident call for identifying culture conditions that produce DCs with a more potent Th1 potential. Routinely, DCs are differentiated in CO(2) incubators under atmospheric oxygen conditions (21% O(2)), which differ from physiological oxygen levels of only 3-5% in tissue, where most DCs reside. We investigated whether differentiation and maturation of DCs under physiological oxygen levels could produce more potent T-cell stimulatory DCs for use in adoptive immunotherapy. We found that immature DCs differentiated under physiological oxygen levels showed a small but significant reduction in their endocytic capacity. The different oxygen levels did not influence their stimuli-induced upregulation of cluster of differentiation 54 (CD54), CD40, CD83, CD86, C-C chemokine receptor type 7 (CCR7), C-X-C chemokine receptor type 4 (CXCR4) and human leukocyte antigen (HLA)-DR or the secretion of interleukin (IL)-6, tumor necrosis factor (TNF)-alpha and IL-10 in response to lipopolysaccharide (LPS) or a cytokine cocktail. However, DCs differentiated under physiological oxygen level secreted higher levels of IL-12(p70) after exposure to LPS or CD40 ligand. Immature DCs differentiated at physiological oxygen levels caused increased T-cell proliferation, but no differences were observed for mature DCs with regard to T-cell activation. In conclusion, we show that although DCs generated under atmospheric or physiological oxygen conditions are mostly similar in function and phenotype, DCs differentiated under physiological oxygen secrete larger amounts of IL-12(p70). This result could have implications for the use of ex vivo-generated DCs for clinical studies, since DCs differentiated at physiological oxygen could induce increased Th1 responses in vivo. FAU - Futalan, Diahnn AU - Futalan D AD - Moores Cancer Center, University of California San Diego, La Jolla, California, USA. FAU - Huang, Chien-Tze AU - Huang CT FAU - Schmidt-Wolf, Ingo G H AU - Schmidt-Wolf IG FAU - Larsson, Marie AU - Larsson M FAU - Messmer, Davorka AU - Messmer D LA - eng GR - R01 AI052731/AI/NIAID NIH HHS/United States GR - R37 AI052731/AI/NIAID NIH HHS/United States GR - AI52731/AI/NIAID NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, Non-P.H.S. DEP - 20110601 PL - England TA - Mol Med JT - Molecular medicine (Cambridge, Mass.) JID - 9501023 RN - 0 (Antigens, CD) RN - 0 (B7-1 Antigen) RN - 0 (CD40 Antigens) RN - 0 (Immunoglobulins) RN - 0 (Lipopolysaccharides) RN - 0 (Membrane Glycoproteins) RN - 0 (Tumor Necrosis Factor-alpha) RN - 126547-89-5 (Intercellular Adhesion Molecule-1) RN - 130068-27-8 (Interleukin-10) RN - 187348-17-0 (Interleukin-12) RN - S88TT14065 (Oxygen) SB - IM MH - Antigens, CD/immunology/metabolism MH - B7-1 Antigen/immunology/metabolism MH - CD40 Antigens/immunology/metabolism MH - Cell Differentiation/*drug effects/immunology MH - Cells, Cultured MH - Coculture Techniques MH - Dendritic Cells/*drug effects/immunology/physiology MH - Endocytosis/immunology MH - Flow Cytometry MH - HeLa Cells MH - Humans MH - Immunoglobulins/immunology/metabolism MH - Immunohistochemistry MH - Immunotherapy, Adoptive/methods MH - Intercellular Adhesion Molecule-1/immunology/metabolism MH - Interleukin-10/immunology/metabolism MH - Interleukin-12/immunology/metabolism MH - Lipopolysaccharides/pharmacology MH - Lymphocyte Activation/immunology/physiology MH - Membrane Glycoproteins/immunology/metabolism MH - Neoplasms/immunology/therapy MH - Oxygen/metabolism/*pharmacology MH - T-Lymphocytes/immunology/metabolism MH - Tumor Necrosis Factor-alpha/immunology/metabolism MH - CD83 Antigen PMC - PMC3188869 EDAT- 2011/06/08 06:00 MHDA- 2012/03/27 06:00 PMCR- 2011/06/01 CRDT- 2011/06/08 06:00 PHST- 2011/01/19 00:00 [received] PHST- 2011/05/19 00:00 [accepted] PHST- 2011/06/08 06:00 [entrez] PHST- 2011/06/08 06:00 [pubmed] PHST- 2012/03/27 06:00 [medline] PHST- 2011/06/01 00:00 [pmc-release] AID - molmed.2011.00031 [pii] AID - 11_31_futalan [pii] AID - 10.2119/molmed.2011.00031 [doi] PST - ppublish SO - Mol Med. 2011 Sep-Oct;17(9-10):910-6. doi: 10.2119/molmed.2011.00031. Epub 2011 Jun 1.