Abstract：
:Dendritic cells (DCs) exposed to tumor antigens followed by treatment with T(h)1-polarizing differentiation signals have paved the way for the development of DC-based cancer vaccines. Critical parameters for assessment of the optimal functional state of DCs and prediction of the vaccine potency of activated DCs have in the past been based on measurements of differentiation surface markers like HLA-DR, CD80, CD83, CD86, and CCR7 and the level of secreted cytokines like interleukin-12p70. However, the level of these markers does not provide a complete picture of the DC phenotype and may be insufficient for prediction of clinical outcome for DC-based therapy. We therefore looked for additional biomarkers by investigating the differential expression of microRNAs (miRNAs) in mature DCs relative to immature DCs. A microarray-based screening revealed that 12 miRNAs were differentially expressed in the two DC phenotypes. Of these, four miRNAs, hsa-miR-155, hsa-miR-146a, hsa-miR-125a-5p, and hsa-miR-29a, were validated by real-time polymerase chain reaction and northern blotting. The matured DCs from 12 individual donors were divided into two groups of highly and less differentiated DCs, respectively. A pronounced difference at the level of miRNA induction between these two groups was observed, suggesting that quantitative evaluation of selected miRNAs potentially can predict the immunogenicity of DC vaccines.
journal_name
Hum Immunoljournal_title
Human immunologyauthors
Holmstrøm K,Pedersen AW,Claesson MH,Zocca MB,Jensen SSdoi
10.1016/j.humimm.2009.10.001subject
Has Abstractpub_date
2010-01-01 00:00:00pages
67-73issue
1eissn
0198-8859issn
1879-1166pii
S0198-8859(09)00608-9journal_volume
71pub_type
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