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2017 ; 7
(1
): 14486
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Deconvolution of Transcriptional Networks in Post-Traumatic Stress Disorder
Uncovers Master Regulators Driving Innate Immune System Function
#MMPMID29101382
Doostparast Torshizi A
; Wang K
Sci Rep
2017[Nov]; 7
(1
): 14486
PMID29101382
show ga
Post-Traumatic Stress Disorder (PTSD) is a psychiatric disorder that develops in
individuals experiencing a shocking incident, but the underlying disease
susceptibility gene networks remain poorly understood. Breen et al. conducted a
Weighted Gene Co-expression Network Analysis on PTSD, and identified a
dysregulated innate immune module associated with PTSD development. To further
identify the Master Regulators (MRs) driving the network function, here we
deconvoluted the transcriptional networks on the same datasets using ARACNe
(Algorithm for Reconstruction of Accurate Cellular Networks) followed by protein
activity analysis. We successfully identified several MRs including SOX3,
TNFAIP3, TRAFD1, POU3F3, STAT2, and PML that govern the expression of a large
collection of genes. Transcription factor binding site enrichment analysis
verified the binding of these MRs to their predicted targets. Notably, the
sub-networks regulated by TNFAIP3, TRAFD1 and PML are involved in innate immune
response, suggesting that these MRs may correlate with the innate immune module
identified by Breen et al. These findings were replicated in an independent
dataset generated on expression microarrays. In conclusion, our analysis
corroborated previous findings that innate immunity may be involved in the
progression of PTSD, yet also identified candidate MRs driving the disease
progression in the innate immunity pathways.