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The gene expression profile of unstimulated dendritic cells can be used as a predictor of function

✍ Scribed by Wai M. Liu; Jayne L. Dennis; Daniel W. Fowler; Angus G. Dalgleish

Publisher
John Wiley and Sons
Year
2011
Tongue
French
Weight
487 KB
Volume
130
Category
Article
ISSN
0020-7136

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✦ Synopsis

Abstract

Dendritic cells (DCs) represent a subset of professional antigen presenting cell (APC) whose role is to elicit immune responses against harmful antigens. They have been used in DC vaccines to stimulate the immune system to kill cancer cells. However, successes in clinical trials have been limited, which may be attributed to a lack of appreciation of the quality of DCs used. In the present study, whole human genome microarrays were used to examine alterations in gene expression of monocyte‐derived DCs after stimulation with supernatants derived from tumours. Our primary aim was to investigate the possibility of a gene signature for DCs that could be used to forecast responsiveness to tumour stimuli. Results showed that DCs are divided into two groups based on their ability to increase costimulatory markers and to trigger T‐cell responses. The gene profiles of the immature DCs from these two groups were distinct, with particular divergence in genes from the interleukin (IL) 8 and thrombospondin‐1 hubs. A subpanel of genes was identified, whose signature of expression was capable of predicting DC‐stimulatory capacity. Overall, these studies have highlighted a gene‐based screen that predicts DC function, which could be used to guide DC‐vaccine trials.

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