期刊
CYTOTHERAPY
卷 5, 期 5, 页码 391-398出版社
ELSEVIER SCI LTD
DOI: 10.1080/14653240310003053
关键词
tumor vaccination; magnetic beads separation; monoclonal antibodies
Background DCs for use in immunotherapy are frequently generated from peripheral blood monocytes. However, there are different approaches to monocyte enrichment. Method Plastic adherence is a widely used method for the enrichment of monocytes collected in a leukapheresis procedure. Alternatively, monocytes may be enriched by positive selection using magnetic beads coupled to CD14 Abs, or by cell depletion using beads coupled to Abs against CD2 and CD19 to remove non-monocytes. Results Positive selection resulted in the highest purity of immature DCs (97 +/- 1%), but in a low yield (8 +/- 3%). In contrast, depletion of non-monocytes gave a good yield (21 +/- 6%), but insufficient purity (42 +/- 10%). Conventional adherence procedures resulted in a good yield (25 +/- 5%) and reasonable purity (72 +/- 4%). All three monocyte enrichment procedures resulted in DCs that underwent maturation upon exposure to a combination of lipopolysaccharide and IFN-gamma. These DCs had a typical immune phenotype, they released similar amounts of IL-12, and had the capacity to support MLR.
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