Predicting novel features of Toll-like receptor 3 signaling in macrophages

Mohamed Helmy, Jin Gohda, Jun Ichiro Inoue, Masaru Tomita, Masa Tsuchiya, Kumar Selvarajoo

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

The Toll-like receptor (TLR) 3 plays a critical role in mammalian innate immune response against viral attacks by recognizing double-stranded RNA (dsRNA) or its synthetic analog polyinosinic-polycytidylic acid (poly (I:C)). This leads to the activation of MAP kinases and NF-κB which results in the induction of type I interferons and proinflammatory cytokines to combat the viral infection. To understand the complex interplay of the various intracellular signaling molecules in the regulation of NF-κB and MAP kinases, we developed a computational TLR3 model based upon perturbation-response approach. We curated literature and databases to determine the TLR3 signaling topology specifically for murine macrophages. For initial model creation, we used wildtype temporal activation profiles of MAP kinases and NF-κB and, for model testing, used TRAF6 KO and TRADD KO data. From dynamic simulations we predict i) the existence of missing intermediary steps between extracellular poly (I:C) stimulation and intracellular TLR3 binding, and ii) the presence of a novel pathway which is essential for JNK and p38, but not NF-κB, activation. Our work shows activation dynamics of signaling molecules can be used in conjunction with perturbation-response models to decipher novel signaling features of complicated immune pathways.

Original languageEnglish
Article numbere4661
JournalPLoS One
Volume4
Issue number3
DOIs
Publication statusPublished - 2009 Mar 2

Fingerprint

Toll-Like Receptor 3
Macrophages
mitogen-activated protein kinase
polyinosinic-polycytidylic acid
Poly I-C
macrophages
Phosphotransferases
Chemical activation
TNF Receptor-Associated Factor 6
Interferon Type I
Double-Stranded RNA
Virus Diseases
Innate Immunity
Molecules
double-stranded RNA
interferons
Databases
topology
Cytokines
cytokines

ASJC Scopus subject areas

  • Agricultural and Biological Sciences(all)
  • Biochemistry, Genetics and Molecular Biology(all)
  • Medicine(all)

Cite this

Helmy, M., Gohda, J., Inoue, J. I., Tomita, M., Tsuchiya, M., & Selvarajoo, K. (2009). Predicting novel features of Toll-like receptor 3 signaling in macrophages. PLoS One, 4(3), [e4661]. https://doi.org/10.1371/journal.pone.0004661

Predicting novel features of Toll-like receptor 3 signaling in macrophages. / Helmy, Mohamed; Gohda, Jin; Inoue, Jun Ichiro; Tomita, Masaru; Tsuchiya, Masa; Selvarajoo, Kumar.

In: PLoS One, Vol. 4, No. 3, e4661, 02.03.2009.

Research output: Contribution to journalArticle

Helmy, M, Gohda, J, Inoue, JI, Tomita, M, Tsuchiya, M & Selvarajoo, K 2009, 'Predicting novel features of Toll-like receptor 3 signaling in macrophages', PLoS One, vol. 4, no. 3, e4661. https://doi.org/10.1371/journal.pone.0004661
Helmy, Mohamed ; Gohda, Jin ; Inoue, Jun Ichiro ; Tomita, Masaru ; Tsuchiya, Masa ; Selvarajoo, Kumar. / Predicting novel features of Toll-like receptor 3 signaling in macrophages. In: PLoS One. 2009 ; Vol. 4, No. 3.
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