PMID- 24726860 OWN - NLM STAT- MEDLINE DCOM- 20150106 LR - 20171116 IS - 1879-0542 (Electronic) IS - 0165-2478 (Linking) VI - 160 IP - 1 DP - 2014 Jul TI - Day 3 Poly (I:C)-activated dendritic cells generated in CellGro for use in cancer immunotherapy trials are fully comparable to standard Day 5 DCs. PG - 39-49 LID - S0165-2478(14)00056-X [pii] LID - 10.1016/j.imlet.2014.03.010 [doi] AB - BACKGROUND: Dendritic cells (DCs) are professional antigen-presenting cells that are capable of inducing immune responses. DC-based vaccines are normally generated using a standard 5- to 7-day protocol. To shorten the DC-based vaccine production for use in cancer immunotherapy, we have developed a fast DC protocol by comparing standard DCs (Day 5 DCs) and fast DCs (Day 3 DCs). METHODS: We tested the generation of Day 5 versus Day 3 DCs using CellGro media and subsequent activation by two activation stimuli: Poly (I:C) and LPS. We evaluated DC morphology, viability, phagocyte activity, cytokine production and ability to stimulate antigen-specific T cells. RESULTS: Day 5 and Day 3 DCs exhibited similar phagocytic capacity. Poly (I:C)-activated Day 5 DCs expressed higher levels of the costimulatory and surface molecules CD80, CD86 and HLA-DR compared to Poly (I:C)-activated Day 3 DCs. Nevertheless, LPS-activated Day 5 and Day 3 DCs were phenotypically similar. Cytokine production was generally stronger when LPS was used as the maturation stimulus, and there were no significant differences between Day 5 and Day 3 DCs. Importantly, Day 5 and Day 3 DCs were able to generate comparable numbers of antigen-specific CD8(+) T cells. The number of Tregs induced by Day 5 and Day 3 DCs was also comparable. CONCLUSION: We identified monocyte-derived DCs generated in CellGro for 3 days and activated using Poly (I:C) similarly potent in most functional aspects as DCs produced by the standard 5 day protocol. These results provide the rationale for the evaluation of faster protocols for DC generation in clinical trials. CI - Copyright (c) 2014 Elsevier B.V. All rights reserved. FAU - Truxova, Iva AU - Truxova I AD - Department of Immunology, Charles University, Second Faculty of Medicine and University Hospital Motol, Prague, Czech Republic; Sotio, Prague, Czech Republic. FAU - Pokorna, Katerina AU - Pokorna K AD - Sotio, Prague, Czech Republic. FAU - Kloudova, Kamila AU - Kloudova K AD - Sotio, Prague, Czech Republic. FAU - Partlova, Simona AU - Partlova S AD - Department of Immunology, Charles University, Second Faculty of Medicine and University Hospital Motol, Prague, Czech Republic; Sotio, Prague, Czech Republic. FAU - Spisek, Radek AU - Spisek R AD - Department of Immunology, Charles University, Second Faculty of Medicine and University Hospital Motol, Prague, Czech Republic; Sotio, Prague, Czech Republic. FAU - Fucikova, Jitka AU - Fucikova J AD - Department of Immunology, Charles University, Second Faculty of Medicine and University Hospital Motol, Prague, Czech Republic; Sotio, Prague, Czech Republic. Electronic address: jitka.fucikova@fnmotol.cz. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20140412 PL - Netherlands TA - Immunol Lett JT - Immunology letters JID - 7910006 RN - 0 (Cancer Vaccines) RN - 0 (Cytokines) RN - O84C90HH2L (Poly I-C) SB - IM MH - Antigen-Presenting Cells/drug effects/immunology/metabolism MH - Cancer Vaccines/immunology MH - *Cell Culture Techniques MH - Cell Differentiation/drug effects/immunology MH - Cell Survival MH - Cytokines/biosynthesis MH - Dendritic Cells/cytology/drug effects/*immunology/metabolism MH - Humans MH - Immunophenotyping MH - Immunotherapy MH - Neoplasms/*immunology/metabolism/therapy MH - Phagocytosis/immunology MH - Phenotype MH - Poly I-C/*immunology/pharmacology MH - T-Cell Antigen Receptor Specificity/immunology MH - T-Lymphocyte Subsets/immunology/metabolism MH - Time Factors OTO - NOTNLM OT - Cancer immunotherapy OT - Dendritic cell OT - Fast generation OT - Monocyte OT - Vaccine EDAT- 2014/04/15 06:00 MHDA- 2015/01/07 06:00 CRDT- 2014/04/15 06:00 PHST- 2013/11/08 00:00 [received] PHST- 2014/03/19 00:00 [revised] PHST- 2014/03/26 00:00 [accepted] PHST- 2014/04/15 06:00 [entrez] PHST- 2014/04/15 06:00 [pubmed] PHST- 2015/01/07 06:00 [medline] AID - S0165-2478(14)00056-X [pii] AID - 10.1016/j.imlet.2014.03.010 [doi] PST - ppublish SO - Immunol Lett. 2014 Jul;160(1):39-49. doi: 10.1016/j.imlet.2014.03.010. Epub 2014 Apr 12.