Innate immune activity conditions the effect of regulatory variants upon monocyte gene expression.

Innate immune activity conditions the effect of regulatory variants upon monocyte gene expression.
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DOI:
10.1126/science.1246949
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发表时间:
2014-03-07
期刊:
Science (New York, N.Y.)
影响因子:
--
通讯作者:
Knight JC
Knight JC
中科院分区:
其他
文献类型:
--
作者:
Fairfax BP;Humburg P;Makino S;Naranbhai V;Wong D;Lau E;Jostins L;Plant K;Andrews R;McGee C;Knight JC

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To systematically investigate the impact of immune stimulation upon regulatory variant activity, we exposed primary monocytes from 432 healthy Europeans to interferon-γ (IFN-γ) or differing durations of lipopolysaccharide and mapped expression quantitative trait loci (eQTLs). More than half of cis-eQTLs identified, involving hundreds of genes and associated pathways, are detected specifically in stimulated monocytes. Induced innate immune activity reveals multiple master regulatory trans-eQTLs including the major histocompatibility complex (MHC), coding variants altering enzyme and receptor function, an IFN-β cytokine network showing temporal specificity, and an interferon regulatory factor 2 (IRF2) transcription factor–modulated network. Induced eQTL are significantly enriched for genome-wide association study loci, identifying context-specific associations to putative causal genes including CARD9, ATM, and IRF8. Thus, applying pathophysiologically relevant immune stimuli assists resolution of functional genetic variants.
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