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AB254580

Anti-CD28 antibody

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Rabbit Polyclonal CD28 antibody. Suitable for WB, IHC-P, ICC/IF and reacts with Human samples. Immunogen corresponding to Synthetic Peptide within Human CD28.

View Alternative Names

CD28, T-cell-specific surface glycoprotein CD28, TP44

3 Images
Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-CD28 antibody (AB254580)
  • IHC-P

Supplier Data

Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections) - Anti-CD28 antibody (AB254580)

Human spleen tissue stained for CD28 with ab254580 at 2 μg/ml in immunohistochemical analysis.

Immunocytochemistry/ Immunofluorescence - Anti-CD28 antibody (AB254580)
  • ICC/IF

Supplier Data

Immunocytochemistry/ Immunofluorescence - Anti-CD28 antibody (AB254580)

Human spleen tissue labeling CD28 using ab254580 at 20 μg/ml in IF.

Western blot - Anti-CD28 antibody (AB254580)
  • WB

Supplier Data

Western blot - Anti-CD28 antibody (AB254580)

All lanes:

Western blot - Anti-CD28 antibody (ab254580) at 1 µg/mL

Lane 1:

Human spleen tissue lysate

Lane 2:

Human spleen tissue lysate with blocking peptide

Predicted band size: 25 kDa

false

Key facts

Host species

Rabbit

Clonality

Polyclonal

Isotype

IgG

Carrier free

No

Reacts with

Human

Applications

IHC-P, WB, ICC/IF

applications

Immunogen

Synthetic Peptide within Human CD28. The exact immunogen used to generate this antibody is proprietary information.

P10747

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Reactivity data

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We recommend this product because it’s often used in the same experiment or related research.

We advise that you always check the datasheet to ensure it fits your experiments, or contact ourtechnical teamfor help.

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Properties and storage information

Form
Liquid
Purification technique
Affinity purification Immunogen
Storage buffer
pH: 7.2 Preservative: 0.02% Sodium azide Constituents: PBS
Shipped at conditions
Blue Ice
Appropriate short-term storage duration
1-2 weeks
Appropriate short-term storage conditions
+4°C
Appropriate long-term storage conditions
-20°C
Aliquoting information
Upon delivery aliquot
Storage information
Avoid freeze / thaw cycle
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Supplementary information

This supplementary information is collated from multiple sources and compiled automatically.

CD28 also known as T-cell-specific surface glycoprotein CD28 or TP44 plays an important role as a co-stimulatory receptor on T cells. This glycoprotein has a molecular mass of about 44 kDa and is located mainly on the cell surface of T cells. CD28 expression also occurs on thymocytes and some B cells. It forms part of the immunoglobulin superfamily featuring in significant antibody interactions. Researchers often use anti-CD28 antibodies for various immunological assays including CD28 ELISA to study its function.
Biological function summary

CD28 co-stimulates T cells after antigen presentation. It enhances T cell proliferation survival and cytokine production. CD28 functions alongside the T cell receptor (TCR) complex mediating signals that promote full T cell activation. This interaction amplifies the immune response forming an important axis of immune system communication. CD28 interacts with its ligands B7-1 (CD80) and B7-2 (CD86) found on antigen-presenting cells (APCs) illustrating its role in immune system dynamics.

Pathways

CD28 is integral to the PI3K/Akt and MAPK/ERK signaling pathways. These pathways conduct signals critical for cellular growth and survival linking CD28 to downstream transcription factors. The interaction with another protein CTLA-4 acts as a regulatory balance for CD28 signaling preventing over-activation of T cells. This balance influences immune homeostasis and tolerance providing a framework for understanding costimulatory and inhibitory signaling.

CD28's role becomes evident in autoimmune diseases and transplant rejection. Abnormal CD28 signaling links to rheumatoid arthritis where inappropriate T cell activation occurs. Similarly CD28 activity contributes to organ transplant rejection by stimulating T cell-mediated responses against transplanted tissues. CTLA-4 through regulatory feedback can modify these effects providing therapeutic target strategies for managing such disorders. Efforts to modulate CD28 activity involve developing therapeutic agents such as anti-CD28 monoclonal antibodies.
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Product protocols

For this product, it's our understanding that no specific protocols are required. You can visit:
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Target data

Receptor that plays a role in T-cell activation, proliferation, survival and the maintenance of immune homeostasis (PubMed : 1650475, PubMed : 7568038). Functions not only as an amplifier of TCR signals but delivers unique signals that control intracellular biochemical events that alter the gene expression program of T-cells (PubMed : 24665965). Stimulation upon engagement of its cognate ligands CD80 or CD86 increases proliferation and expression of various cytokines in particular IL2 production in both CD4(+) and CD8(+) T-cell subsets (PubMed : 1650475, PubMed : 35397202). Mechanistically, ligation induces recruitment of protein kinase C-theta/PRKCQ and GRB2 leading to NF-kappa-B activation via both PI3K/Akt-dependent and -independent pathways (PubMed : 21964608, PubMed : 24665965, PubMed : 7568038). In conjunction with TCR/CD3 ligation and CD40L costimulation, enhances the production of IL4 and IL10 in T-cells (PubMed : 8617933).. Isoform 3. Enhances CD40L-mediated activation of NF-kappa-B and kinases MAPK8 and PAK2 in T-cells (PubMed : 15067037).
See full target information CD28
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Product promise

We are committed to supporting your work with high-quality reagents, and we're here for you every step of the way. In the unlikely event that one of our products does not perform as expected, you're protected by our Product Promise.
For full details, please see our Terms & Conditions
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