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SignalSilence® Tyk2 siRNA I

SignalSilence® Tyk2 siRNA I #14254

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SignalSilence® Tyk2 siRNA I: Image 1

Western blot analysis of extracts from MCF7 cells, transfected with 100 nM SignalSilence® Control siRNA (Unconjugated) #6568 (-), or SignalSilence® Tyk2 siRNA I (+), using Tyk2 (D4I5T) Rabbit mAb #14193 (upper) or β-Actin (D6A8) Rabbit mAb #8457 (lower). The Tyk2 (D4I5T) Rabbit mAb confirms silencing of Tyk2 expression, while the β-Actin (D6A8) Rabbit mAb is used as a loading control.

Supporting Data


Application Key:

  • W-Western
  • IP-Immunoprecipitation
  • IHC-Immunohistochemistry
  • ChIP-Chromatin Immunoprecipitation
  • IF-Immunofluorescence
  • F-Flow Cytometry
  • E-P-ELISA-Peptide

Species Cross-Reactivity Key:

  • H-Human
  • M-Mouse
  • R-Rat
  • Hm-Hamster
  • Mk-Monkey
  • Vir-Virus
  • Mi-Mink
  • C-Chicken
  • Dm-D. melanogaster
  • X-Xenopus
  • Z-Zebrafish
  • B-Bovine
  • Dg-Dog
  • Pg-Pig
  • Sc-S. cerevisiae
  • Ce-C. elegans
  • Hr-Horse
  • All-All Species Expected

Product Usage Information

CST recommends transfection with 100 nM SignalSilence® Tyk2 siRNA I 48 to 72 hours prior to cell lysis. For transfection procedure, follow the 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.


Tyk2 siRNA I is supplied in RNAse-free water. Aliquot and store at -20ºC.

Product Description

SignalSilence® Tyk2 siRNA I from Cell Signaling Technology (CST) allows the researcher to specifically inhibit Tyk2 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.


Tyk2 is a member of the Jak family of protein tyrosine kinases. It associates with and is activated by receptors for many cytokines including IL-13, the IL-6 family, IL-10, and IFN-α and β (1-3). Following ligand binding, Tyk2 is activated by phosphorylation of Tyr1054 and/or Tyr1055 (4). Tyk2 is required for the tyrosine phosphorylation of Stat3 in the IFN-β signaling cascade (5).

The role of Tyk2 in immune regulation and pathological signaificance has been extensively studied (reviewed in 6). Tyk2 knockout mice display increased sensitivity to infection and defective tumor surveillance, but only a partial effect on Type I IFN signaling (7,8). In contrast, a human patient diagnosed with hyper-IgE syndrome having increased susceptibility to various microorganisms was found to have a homozygous mutation of Tyk2 (9). These studies suggest a more critical role of Tyk2 in humans with regards to Type I IFN signaling as well as other cytokines including IL-23, IL-6, and IL-10.

  1. Velazquez, L. et al. (1995) J. Biol. Chem. 270, 3327-34.
  2. Stahl, N. et al. (1994) Science 263, 92-5.
  3. Leonard, W.J. and O'Shea, J.J. (1998) Annu Rev Immunol 16, 293-322.
  4. Gauzzi, M.C. et al. (1996) J Biol Chem 271, 20494-500.
  5. Rani, M.R. et al. (1999) J. Biol. Chem. 274, 32507-11.
  6. Strobl, B. et al. (2011) Front Biosci (Landmark Ed) 16, 3214-32.
  7. Karaghiosoff, M. et al. (2000) Immunity 13, 549-60.
  8. Shimoda, K. et al. (2000) Immunity 13, 561-71.
  9. Minegishi, Y. et al. (2006) Immunity 25, 745-55.

Pathways & Proteins

Explore pathways + proteins related to this product.

Limited Uses

Except as otherwise expressly agreed in a writing signed by a legally authorized representative of CST, the following terms apply to Products provided by CST, its affiliates or its distributors. Any Customer's terms and conditions that are in addition to, or different from, those contained herein, unless separately accepted in writing by a legally authorized representative of CST, are rejected and are of no force or effect.

Products are labeled with For Research Use Only or a similar labeling statement and have not been approved, cleared, or licensed by the FDA or other regulatory foreign or domestic entity, for any purpose. Customer shall not use any Product for any diagnostic or therapeutic purpose, or otherwise in any manner that conflicts with its labeling statement. Products sold or licensed by CST are provided for Customer as the end-user and solely for research and development uses. Any use of Product for diagnostic, prophylactic or therapeutic purposes, or any purchase of Product for resale (alone or as a component) or other commercial purpose, requires a separate license from CST. Customer shall (a) not sell, license, loan, donate or otherwise transfer or make available any Product to any third party, whether alone or in combination with other materials, or use the Products to manufacture any commercial products, (b) not copy, modify, reverse engineer, decompile, disassemble or otherwise attempt to discover the underlying structure or technology of the Products, or use the Products for the purpose of developing any products or services that would compete with CST's products or services, (c) not alter or remove from the Products any trademarks, trade names, logos, patent or copyright notices or markings, (d) use the Products solely in accordance with CST's Product Terms of Sale and any applicable documentation, and (e) comply with any license, terms of service or similar agreement with respect to any third party products or services used by Customer in connection with the Products.

For Research Use Only. Not For Use In Diagnostic Procedures.
Cell Signaling Technology is a trademark of Cell Signaling Technology, Inc.
SignalSilence is a registered trademark of Cell Signaling Technology, Inc.
To Purchase # 14254S
Product # Size Price
300 µl  (3 nmol) $ 278

Important Ordering Details

Custom Ordering Details: Product is assembled upon order. Please allow up to three business days for your product to be processed.