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To Purchase # 7759S

7759S 300 µl (3 nmol) $249.00
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Western blot analysis of extracts from HeLa cells, transfected with 100 nM SignalSilence® Control siRNA (Unconjugated) #6568 (-), SignalSilence® β2-microglobulin siRNA I (+), or SignalSilence® β2-microglobulin siRNA II #7774 (+), using β2-microglobulin Antibody #9899 (upper) or β-Tubulin (9F3) Rabbit mAb #2128 (lower). The β2-microglobulin Antibody confirms silencing of β2-microglobulin expression, while the β-Tubulin (9F3) Rabbit mAb is used as a loading control.

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Product Usage Information

CST recommends transfection with 100 nM SignalSilence® β2-microglobulin siRNA I 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® β2-microglobulin siRNA I from Cell Signaling Technology (CST) allows the researcher to specifically inhibit β2-microglobulin 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.

β2-microglobulin (B2M) is a principal component of the Major Histocompatibility Complex (MHC) class I molecule, a ternary membrane protein complex that displays fragments derived from proteolyzed cytosolic proteins on the surface of cells for recognition by the surveillance immune system (1,2). As an integral component of the MHC class I complex, β2-microglobulin plays a critically important role in immune system function (3). It has important relevance to cancer biology research; for example, research studies have shown that nearly one-third of diffuse large B cell lymphomas contain mutations that inactivate β2-microglobulin gene function, thereby allowing tumor cells to escape immune detection (4). In addition, β2-microglobulin has been identified as an amyloid preprotein with collagen-binding affinity (5); its accumulation in osteoarthritic lesions of long-term dialysis patients is reportedly a contributing factor to the condition known as amyloid osteoarthropathy (6).


1.  Krangel, M.S. et al. (1979) Cell 18, 979-91.

2.  Collins, E.J. et al. (1995) Proc Natl Acad Sci U S A 92, 1218-21.

3.  Marx, J.I. (1974) Science 185, 428-9.

4.  Challa-Malladi, M. et al. (2011) Cancer Cell 20, 728-40.

5.  Gorevic, P.D. et al. (1985) J Clin Invest 76, 2425-9.

6.  Ohashi, K. (2001) Pathol Int 51, 1-10.


Entrez-Gene Id 567
Swiss-Prot Acc. P61769


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.