PMID- 26460687 OWN - NLM STAT- MEDLINE DCOM- 20160606 LR - 20181113 IS - 1932-6203 (Electronic) IS - 1932-6203 (Linking) VI - 10 IP - 10 DP - 2015 TI - Expression of CD1a and Type-1 Polarization Are Dissociated in Human Monocyte-Derived Dendritic Cells. PG - e0140432 LID - 10.1371/journal.pone.0140432 [doi] LID - e0140432 AB - Ex vivo generated monocyte-derived dendritic cell (moDC)-vaccines have long been touted as promising immunotherapeutic agents for cancer treatment, although the response rate generally remains low. The reasons for this are still unclear and confounded by the diversity in manufacturing protocols that may affect moDC function. Preclinical studies have shown that the stimulatory function of dendritic cells can be improved by engaging invariant NKT cells in vivo through the presentation of the glycolipid alpha-galactosylceramide via CD1d. However, expression of CD1d on moDC has been shown to be negatively correlated with expression of CD1a, which in turn has been suggested to be a surrogate marker for IL-12 secreting type-1 polarized moDC, the preferred functional characteristics for cancer vaccines. Here we challenge this notion by showing that plasma-derived lipids drive functional levels of CD1d expression, while CD1a expression can vary considerably in these cells without being correlated with a loss of polarization or immunogenicity. FAU - Mester, Brigitta AU - Mester B AD - Malaghan Institute of Medical Research, Wellington, New Zealand. FAU - Bauer, Evelyn AU - Bauer E AD - Malaghan Institute of Medical Research, Wellington, New Zealand. FAU - Wood, Catherine E AU - Wood CE AD - Malaghan Institute of Medical Research, Wellington, New Zealand; Capital and Coast District Health Board, Wellington, New Zealand. FAU - Hermans, Ian F AU - Hermans IF AD - Malaghan Institute of Medical Research, Wellington, New Zealand; School of Biological Sciences, Victoria University of Wellington, Wellington, New Zealand; Maurice Wilkins Centre, Wellington, New Zealand. FAU - Gasser, Olivier AU - Gasser O AD - Malaghan Institute of Medical Research, Wellington, New Zealand. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20151013 PL - United States TA - PLoS One JT - PloS one JID - 101285081 RN - 0 (Antigens, CD1) RN - 0 (CD1a antigen) SB - IM MH - Antigens, CD1/*metabolism MH - *Cell Polarity MH - Dendritic Cells/*cytology/*metabolism MH - Humans MH - Monocytes/*cytology MH - Phenotype MH - Plasma PMC - PMC4603902 COIS- Competing Interests: The authors have declared that no competing interests exist. EDAT- 2015/10/16 06:00 MHDA- 2016/06/09 06:00 PMCR- 2015/10/13 CRDT- 2015/10/14 06:00 PHST- 2015/07/27 00:00 [received] PHST- 2015/09/25 00:00 [accepted] PHST- 2015/10/14 06:00 [entrez] PHST- 2015/10/16 06:00 [pubmed] PHST- 2016/06/09 06:00 [medline] PHST- 2015/10/13 00:00 [pmc-release] AID - PONE-D-15-32836 [pii] AID - 10.1371/journal.pone.0140432 [doi] PST - epublish SO - PLoS One. 2015 Oct 13;10(10):e0140432. doi: 10.1371/journal.pone.0140432. eCollection 2015.