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- W1969064295 abstract "Transcriptomic analyses revealed a discriminating gene expression profile in human CD34+ progenitor-derived dendritic cells (DC) after exposure to skin sensitizers versus non-sensitizers. Starting from the differential expression in a small set of genes, a preliminary classification model (VITOSENS®) has been developed to identify chemicals as (non-)sensitizing. The objective of the current study is to gain knowledge on the role of the VITOSENS® markers in the DC maturation process, as well as to investigate their activation by a skin sensitizer versus a non-sensitizing danger molecule. To evaluate the functional relevance of VITOSENS® biomarkers in DC maturation, their response induced by the sensitizer dinitrofluorobenzene (DNFB) was pharmacologically counteracted. Flow cytometry analyses revealed that CD86 was down-regulated after COX2 inhibition, whereas expression of HLA-DR was reduced by stimulating CCR2. When exposing DC to DNFB versus lipopolysaccharide S (LPS), expression of most discriminating genes CREM and CCR2 was not altered by LPS as opposed to DNFB. To summarize, the observations in this research indicate that a selection of the VITOSENS® genes may be functionally involved in sensitizer-induced DC activation. By comparing their responsiveness towards a non-sensitizing danger signal and a sensitizer, VITOSENS® gene markers CREM and CCR2 appear to display a specific response." @default.
- W1969064295 created "2016-06-24" @default.
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- W1969064295 date "2011-06-01" @default.
- W1969064295 modified "2023-10-17" @default.
- W1969064295 title "Functionality and specificity of gene markers for skin sensitization in dendritic cells" @default.
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- W1969064295 doi "https://doi.org/10.1016/j.toxlet.2011.02.015" @default.
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