- UC10-4B9 (See other available formats)
- Other Names
- Cytotoxic T Lymphocyte-Associated Antigen-4 (CTLA-4), Ly-56
- Armenian Hamster IgG
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- Product Citations
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CD152, also known as CTLA-4 or Ly-56, is a 33 kD member of the immunoglobulin superfamily. It is expressed on activated T and B lymphocytes. CD152 is similar to CD28 in amino acid sequence, structure, and genomic organization and these two receptors share common B7 family counter-receptors (B7-1, B7-2). Whereas CD28 delivers a costimulatory signal in T cell activation, CTLA-4 negatively regulates cell-mediated immune responses. CD152 is thought to play a role in the induction and maintenance of immunological tolerance as well as the development of protective immunity and thymocyte regulation.Product Details
- Antibody Type
- Host Species
- Armenian Hamster
- Mouse CTLA-4-mouse IgG2a fusion protein
- Phosphate-buffered solution, pH 7.2, containing 0.09% sodium azide.
- The antibody was purified by affinity chromatography, and conjugated with biotin under optimal conditions.
- 0.5 mg/ml
- Storage & Handling
- The antibody solution should be stored undiluted between 2°C and 8°C. Do not freeze.
FC - Quality tested
- Recommended Usage
Each lot of this antibody is quality control tested by immunofluorescent staining with flow cytometric analysis. For flow cytometric staining, the suggested use of this reagent is ≤1.0 µg per million cells in 100 µl volume. It is recommended that the reagent be titrated for optimal performance for each application.
- Application Notes
The UC10-4B9 antibody can enhance T cell co-stimulation by blocking CTLA-4 interactions with the B7 co-receptors, favoring CD28 interactions. Additional reported applications (for the relevant formats) include: immunoprecipitation1, in vitro stimulation, in vitro and in vivo blocking1-4 of ligand binding, and as ELISA capture antibody5. To reduce non-specific binding to cells bearing Fc-receptors, pre-incubation of cells with anti-mouse CD16/CD32, clone 93 (Cat. No. 101301/101302), is recommended prior to immunofluorescent staining. For most successful immunofluorescent staining results, it may be important to maximize signal over background by using a relatively bright fluorochrome-antibody conjugate (Cat. No. 106306) or by using a high sensitivity, three-layer staining technique (e.g., including a biotinylated anti-Armenian hamster IgG (Cat. No. 405501) second step, followed by SAv-PE (Cat. No. 405204)). The Ultra LEAF™ purified antibody (Endotoxin < 0.01 EU/μg, Azide-Free, 0.2 μm filtered) is recommended for functional assays (Cat. No. 106327).
(PubMed link indicates BioLegend citation)
- Walunas TL, et al. 1994. Immunity 1:405. (Block, IP)
- Cilio CM, et al. 1998. J. Exp. Med. 188:1239. (Block)
- Issazadeh S, et al. 1999. J. Immunol. 162:761. (Block)
- McCoy K, et al. 1997. J. Exp. Med. 186:183. (Block)
- Hsu HC, et al. 2007. J. Immunol. 178:5357. (ELISA Capture)
- Sugita S, et al. 2010. Invest. Ophthalmol. Vis. Sci. 51:5783. PubMed
AB_313252 (BioLegend Cat. No. 106303)
AB_313253 (BioLegend Cat. No. 106304)
- Ig superfamily, 33 kD
Activated T cells and B cells
- Negative regulator of T cell activation
- CD80 (B7-1), CD86 (B7-2)
- Cell Type
- B cells, T cells, Tregs
- Biology Area
- Molecular Family
- CD Molecules, Immune Checkpoint Receptors
- Antigen References
1. Barclay A, et al. 1997. The Leukocyte Antigen FactsBook Academic Press.
2. Allison JP, et al. 1995. Science 270:932.
3. Waterhouse P, et al. 1995. Science 270:985.
4. Linsley PS, et al. 1991. J. Exp. Med. 174:561.
- Gene ID
- 12477 View all products for this Gene ID
- View information about CD152 on UniProt.org
- How many biotin molecules are per antibody structure?
- We don't routinely measure the number of biotins with our antibody products but the number of biotin molecules range from 3-6 molecules per antibody.
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