SignalSilence® IRF-7 siRNA II #13291
Inquiry Info. # 13291
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Supporting Data
| REACTIVITY | H |
Species Cross-Reactivity Key:
- H-Human
Product Information
Product Usage Information
CST recommends transfection with 100 nM SignalSilence® IRF-7 siRNA II 48 to 72 hours prior to cell lysis. For transfection procedure, follow protocol provided by the transfection reagent manufacturer. Please feel free to contact CST with any questions on use.
Each vial contains the equivalent of 100 transfections, which corresponds to a final siRNA concentration of 100 nM per transfection in a 24-well plate with a total volume of 300 μl per well.
Storage
Product Description
Quality Control
Oligonucleotide synthesis is monitored base by base through trityl analysis to ensure appropriate coupling efficiency. The oligo is subsequently purified by affinity-solid phase extraction. The annealed RNA duplex is further analyzed by mass spectrometry to verify the exact composition of the duplex. Each lot is compared to the previous lot by mass spectrometry to ensure maximum lot-to-lot consistency.
Background
Interferon regulatory factors (IRFs) comprise a family of transcription factors that function within the Jak/Stat pathway to regulate interferon (IFN) and IFN-inducible gene expression in response to viral infection (1). IRFs play an important role in pathogen defense, autoimmunity, lymphocyte development, cell growth, and susceptibility to transformation. The IRF family includes nine members: IRF-1, IRF-2, IRF-9/ISGF3γ, IRF-3, IRF-4 (Pip/LSIRF/ICSAT), IRF-5, IRF-6, IRF-7, and IRF-8/ICSBP. All IRF proteins share homology in their amino-terminal DNA-binding domains. IRF family members regulate transcription through interactions with proteins that share similar DNA-binding motifs, such as IFN-stimulated response elements (ISRE), IFN consensus sequences (ICS), and IFN regulatory elements (IRF-E) (2).
IRF-7, which is functionally similar to IRF-3, is preferentially expressed in lymphoid cells and induced by virus, LPS, and IFN-α (3-5). IRF-7 plays an essential role in the induction of type I interferon in response viral infection (6-8). Like IRF-3, IRF-7 is regulated at multiple serine phosphorylation sites near its carboxyl terminus, which are required for nuclear translocation, DNA binding and transcriptional activity (9-11).
- Taniguchi, T. et al. (2001) Annu Rev Immunol 19, 623-55.
- Honda, K. and Taniguchi, T. (2006) Nat Rev Immunol 6, 644-58.
- Au, W.C. et al. (1998) J Biol Chem 273, 29210-7.
- Wathelet, M.G. et al. (1998) Mol Cell 1, 507-18.
- Marié, I. et al. (1998) EMBO J 17, 6660-9.
- Sato, M. et al. (2000) Immunity 13, 539-48.
- Honda, K. et al. (2005) Nature 434, 772-7.
- Colina, R. et al. (2008) Nature 452, 323-8.
- Lin, R. et al. (2000) J Biol Chem 275, 34320-7.
- Yang, H. et al. (2003) J Biol Chem 278, 15495-504.
- Caillaud, A. et al. (2005) J Biol Chem 280, 17671-7.
Limited Uses
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