• Product name
    Caspase-8 siRNA vector
    See all siRNA Vector vectors
  • General notes
    pGB expression vectors contain the human U6 RNA polymerase III promoter, which directs constitutive, high-level expression of short RNA transcripts in many cells. Each vector also contains the neomycin/kanamycin-resistance gene to provide kanamycin resistance in bacteria and the G418 resistance in mammalian cells.

    The pGB siRNA vectors can be transfected into mammalian cells using Lipofectamine (Invitrogen). For transient transfection, cells can be analyzed in 24-96 hours following transfections, by Western blot analysis or other detection means. For stable transfections, cells can be selected in G418 selection medium to obtain stable cell lines with the specific gene blocked.


  • Form
  • Storage instructions
    Store at +4°C short term (1-2 weeks). Aliquot and store at -20°C or -80°C. Avoid repeated freeze / thaw cycles.
  • Concentration information loading...
  • Research areas
  • Relevance
    Small interfering RNAs (siRNAs) are short, double-stranded RNA molecules that can target and degrade specific complementary mRNAs. The target gene-specific degradation is an effective means of gene suppression. Abcam's pGB siRNA vectors are designed to provide efficient, long-term suppression of a target gene in cultured mammalian cells and in vivo. The pGB vectors have been optimized for suppressing expression of target genes in mammalian cells by using the human U6 promotor (a RNA polymerase III promotor) which generates large amounts of siRNA in mammalian cells. The pGB expression vector also provides neomycin resistance marker for the selection of stable cell lines, permitting long-term suppression of the target gene. Validation: The antibodies listed as related products have not been previously used by Abcam to validate this vector. The siRNA vectors have been tested in HeLa and/or 293 cell lines. The siRNA-mediated knockdown was analyzed by Western blot.
  • Alternative names
    • siRNA vector
    • Small interfering ribose nucleic acid vector
    • Small interfering RNA vector


  • RNA Interference Mechanism

    Once processed, the vector expressed siRNA is incorporated into a multi-protein nuclease complex known as the RNA-induced silencing complex (RISC). Homology between the sense portion of the siRNA sequence and the mRNA enables the nuclease enzyme to bind and cleave the caspase transcript into small pieces, which are degraded by the cell's machinery.

  • pGB vector

    Features and Positions:

    Human U6 Promoter: 1-256
    Multiple cloning Site: 259-285
    SV40 Promoter: 470-808
    Neomycin / Kanamycin Resistance ORF: 843-1634
    5' Primer: 2789-2813 (CGTCGATTTTTGTGATGCTCGTCAG)
    pUC Origin of Replication: 2222-3003


ab12496 has not yet been referenced specifically in any publications.

Customer reviews and Q&As

1-2 of 2 Q&A


Thank you for your enquiry and for your patience. Regarding your questions: 1) The sequence is considered proprietary information. 2) The reduction level can be more than 80% in 293 cells transfected with the vector. 3) The price is € 325.00 for 20 ug 4) For introducing your own sequence, the vector's originator has advised that you should use ab12506. If you have any more questions, please contact us again.

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I am writing in response to your technical enquiry concerning our siRNA vectors. The siRNA vectors have been tested in HeLa and/or 293 cell lines. The knockdown was analyzed by Western blot. I have now added the western blot image for the caspase 3 knockdown. It can be viewed on www.abcam.com/ab12490. If you do have any more questions please do let me know.

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