Date published: 2026-4-25

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CD28 Antibody (6A266): sc-70613

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Datasheets
  • CD28 Antibody (6A266) is a rat monoclonal IgG2b provided at 200 µg/ml
  • raised against CD28 of human origin
  • recommended for detection of CD28 of human origin by WB, IP, IF and FCM
  • At present, we have not yet completed the identification of the preferred secondary detection reagent(s) for CD28 Antibody (6A266). This work is in progress.
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    CD28 Antibody (6A266) is a rat monoclonal IgG2b antibody that detects CD28 in human samples through applications such as western blotting (WB), immunoprecipitation (IP), immunofluorescence (IF), and flow cytometry (FCM). CD28 plays a crucial role in T cell activation and survival by providing essential co-stimulatory signals upon binding to CD80 and CD86 ligands, which are expressed on antigen-presenting cells. This interaction is vital for the full activation of T cells, as CD28 enhances proliferation and cytokine production, thereby facilitating an effective immune response. CD28 is predominantly expressed on resting T cells, while CTLA-4 serves as a negative regulator and is upregulated on activated T cells, highlighting the delicate balance of co-stimulatory and inhibitory signals that govern T cell function. Anti-CD28 antibody (6A266) is instrumental in studying these dynamics, allowing researchers to explore the mechanisms of T cell activation and the implications for immunotherapy and autoimmune diseases.

    For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.

    Alexa Fluor® is a trademark of Molecular Probes Inc., OR., USA

    LI-COR® and Odyssey® are registered trademarks of LI-COR Biosciences

    CD28 Antibody (6A266) References:

    1. CD28 and T cell co-stimulation.  |  Holdorf, AD., et al. 2000. Rev Immunogenet. 2: 175-84. PMID: 11258416
    2. Costimulation of human CD28- T cells by 4-1BB ligand.  |  Bukczynski, J., et al. 2003. Eur J Immunol. 33: 446-54. PMID: 12645943
    3. Therapeutic opportunities in the B7/CD28 family of ligands and receptors.  |  Carreno, BM., et al. 2005. Curr Opin Pharmacol. 5: 424-30. PMID: 15935730
    4. CD28: old dog, new tricks. CD28 in plasma cell/multiple myeloma biology.  |  Nair, JR., et al. 2009. Adv Exp Med Biol. 633: 55-69. PMID: 19209681
    5. Targeting CD4+CD28- T cells by blocking CD28 co-stimulation.  |  Airò, P. and Scarsi, M. 2013. Trends Mol Med. 19: 1-2. PMID: 23182698
    6. CD28 and ITK signals regulate autoreactive T cell trafficking.  |  Jain, N., et al. 2013. Nat Med. 19: 1632-7. PMID: 24270545
    7. CD28⁻ CD8⁺ T cells are significantly reduced and correlate with disease duration in juveniles with type 1 diabetes.  |  Yarde, DN., et al. 2014. Hum Immunol. 75: 1069-74. PMID: 25241914
    8. First report of expansion of CD4+/CD28 null T-helper lymphocytes in adult patients with idiopathic autoimmune hemolytic anemia.  |  Youssef, SR. and Elsalakawy, WA. 2021. Hematol Transfus Cell Ther. 43: 396-401. PMID: 32709527
    9. CD28-CD80/CD86 interactions in testicular immunoregulation.  |  Sainio-Pöllänen, S., et al. 1996. J Reprod Immunol. 31: 145-63. PMID: 8905549
    10. CD28, a marker associated with tumoral expansion in multiple myeloma.  |  Robillard, N., et al. 1998. Clin Cancer Res. 4: 1521-6. PMID: 9626472

    Ordering Information

    Product NameCatalog #UNITPriceQtyFAVORITES

    CD28 Antibody (6A266)

    sc-70613
    200 µg/ml
    $322.00

    How much sample do you recommend loading on the gel for Western blot detection using CD28 (6A266): sc-70613?

    Asked by: Cweed
    We recommend loading 40–60 µg whole cell lysate, 10–20 µg nuclear extract, 5-10 µg transfected lysate, or 10–20 ng purified protein per lane. A link to our complete Western blotting protocol is provided here for your reference: https://www.scbt.com/scbt/resources/protocols/western-immuno-blotting
    Answered by: Technical Support
    Date published: 2017-03-01
    • y_2026, m_4, d_24, h_10CST
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    Rated 4 out of 5 by from Robust band seen in WB using Jurkat wholeRobust band seen in WB using Jurkat whole cell lysate under non-reducing conditions. -SCBT QC
    Date published: 2015-06-10
    Rated 4 out of 5 by from Great Western blot data obtained in JurkatGreat Western blot data obtained in Jurkat whole cell lysate under non-reducing conditions. -SCBT QC
    Date published: 2013-12-02
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    CD28 Antibody (6A266) is rated 4.0 out of 5 by 2.
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