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Western blot analysis of extracts from L-929 cells, transfected with 100 nM SignalSilence® Control siRNA (Unconjugated) #6568 (-), SignalSilence® Stat6 siRNA I (Mouse Specific) (+), or SignalSilence® Stat6 siRNA II #9404 (+), using Stat6 (D3H4) Rabbit mAb #5397 (upper) or β-Actin (D6A8) Rabbit mAb #8457 (lower). The Stat6 (D3H4) Rabbit mAb confirms silencing of Stat6 expression, while the β-Actin (D6A8) Rabbit mAb is used as a loading control.

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Custom Ordering Details: This item is packaged to order. Please allow two to three days for your order to be processed and shipped.

Product Usage Information

CST recommends transfection with 100 nM SignalSilence® Stat6 siRNA I (Mouse Specific) 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: SignalSilence® siRNA is supplied in RNAse-free water. Aliquot and store at -20ºC.

Product Description

SignalSilence® Stat6 siRNA I (Mouse Specific) from Cell Signaling Technology (CST) allows the researcher to specifically inhibit Stat6 expression using RNA interference, a method whereby gene expression can be selectively silenced through the delivery of double stranded RNA molecules into the cell. All SignalSilence® siRNA products from CST are rigorously tested in-house and have been shown to reduce target protein expression by western analysis.


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.

Upon activation by Janus kinases, Stat6 translocates to the nucleus where it regulates cytokine-induced gene expression. Stat6 is activated via phosphorylation at Tyr641 and is required for responsiveness to IL-4 and IL-13 (1-4). In addition, Stat6 is activated by IFN-α in B cells, where it forms transcriptionally active complexes with Stat2 and p48 (5,6). Protein phosphatase 2A is also involved in regulation of IL-4-mediated Stat6 signaling (7).


1.  Nelms, K. et al. (1999) Ann. Rev. Immunol. 17, 701-738.

2.  Malabarba, M.G. et al. (1996) Biochem. J. 319, 865-872.

3.  Quelle, F.W. et al. (1995) Mol. Cell. Biol. 15, 3336-3343.

4.  Takeda, K. et al. (1996) Nature 380, 627-630.

5.  Hou, J. et al. (1994) Science 265, 1701-6.

6.  Gupta, S. et al. (1999) J. Immunol. 163, 3834-3841.

7.  Woetmann, A. et al. (2003) J. Biol. Chem. 278, 2787-2791.


Entrez-Gene Id 20852
Swiss-Prot Acc. P52633


For Research Use Only. Not For Use In Diagnostic Procedures.
Cell Signaling Technology® is a trademark of Cell Signaling Technology, Inc.
SignalSilence® is a trademark of Cell Signaling Technology, Inc.