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Nat Biotechnol. 2013 Apr;31(4):342-9. doi: 10.1038/nbt.2519. Epub 2013 Mar 17.

Deciphering molecular circuits from genetic variation underlying transcriptional responsiveness to stimuli.

Author information

1
Broad Institute of MIT and Harvard, Cambridge, Massachusetts, USA. iritgv@post.tau.ac.il

Abstract

Individual genetic variation affects gene responsiveness to stimuli, often by influencing complex molecular circuits. Here we combine genomic and intermediate-scale transcriptional profiling with computational methods to identify variants that affect the responsiveness of genes to stimuli (responsiveness quantitative trait loci or reQTLs) and to position these variants in molecular circuit diagrams. We apply this approach to study variation in transcriptional responsiveness to pathogen components in dendritic cells from recombinant inbred mouse strains. We identify reQTLs that correlate with particular stimuli and position them in known pathways. For example, in response to a virus-like stimulus, a trans-acting variant responds as an activator of the antiviral response; using RNA interference, we identify Rgs16 as the likely causal gene. Our approach charts an experimental and analytic path to decipher the mechanisms underlying genetic variation in circuits that control responses to stimuli.

PMID:
23503680
PMCID:
PMC3622156
DOI:
10.1038/nbt.2519
[Indexed for MEDLINE]
Free PMC Article
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