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Biotin anti-human CD152 (CTLA-4) Antibody

Pricing & Availability
Clone
L3D10 (See other available formats)
Regulatory Status
RUO
Other Names
Cytotoxic T-Lymphocyte Antigen 4
Isotype
Mouse IgG1, κ
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Product Citations
publications
CD152_Human_ELISA_012014
  • CD152_Human_ELISA_012014
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349911 50 µg $176
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349912 500 µg $528
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Description

CD152, also known as Cytotoxic T-Lymphocyte Antigen 4 (CTLA-4), is a 33 kD member of the immunoglobulin superfamily. It is transiently expressed on activated T cells. CTLA4 is expressed on the surface of helper T cells and transmits an inhibitory signal to T cells. Regulatory T cells express high levels of CTLA-4. CTLA-4 (CD152) is similar to CD28 in amino acid sequence, structure, and genomic organization. Whereas CD28 delivers a costimulatory signal in T cell activation, CTLA-4 negatively regulates cell-mediated immune responses through interaction with CD80 (B7-1) and CD86 (B7-2) present on antigen presenting cells (APC). CTLA-4 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.

Mutations in the CTLA-4 gene have been associated with various autoimmune diseases, such as systemic lupus erythematosus, insulin-dependent diabetes mellitus, and other autoimmune diseases. A transcript of the CTLA-4 gene that may represent a native soluble form of CTLA-4 (sCTLA-4) showed that eleven of twenty patients with autoimmune thyroid disease (ATD) had a high concentration of sCTLA-4, whereas only 1 of 30 apparently healthy volunteers contained measurable levels. sCTLA-4 immunoreactivity was inhibited by its binding to B7.1, suggesting that sCTLA-4 is a functional receptor. sCTLA4 also plays a role in the initial immune response to infection of immune cells by HIV, along with the CD-1 pathway and others.

Product Details
Technical data sheet

Product Details

Verified Reactivity
Human
Antibody Type
Monoclonal
Host Species
Mouse
Immunogen
Extracellular domain of human CTLA-4 and human IgG1 Fc fusion protein
Formulation
Phosphate-buffered solution, pH 7.2, containing 0.09% sodium azide.
Preparation
The antibody was purified by affinity chromatography and conjugated with biotin under optimal conditions.
Concentration
0.5 mg/ml
Storage & Handling
The antibody solution should be stored undiluted between 2°C and 8°C. Do not freeze.
Application

ELISA Detection - Quality tested
Recommended Usage

Each lot of this antibody is quality control tested by ELISA assay. For ELISA detection applications, a concentration range of 0.5 - 2.0 µg/mL is recommended. To obtain a linear standard curve, serial dilutions of human CTLA-4 recombinant protein ranging from 2500 to 39 pg/mL are recommended for each ELISA plate. It is recommended that the reagent be titrated for optimal performance for each application.

Application Notes

ELISA Detection: The biotinylated L3D10 antibody is useful as the detection antibody in a sandwich ELISA assay, when used in conjunction with the purified A3.6B10.G1 antibody (Cat. No. 525401) as the capture antibody and recombinant human CTLA-4 (Cat. No. 591909) as the standard.

Flow Cytometry: The fluorochrome-labeled L3D10 antibody is useful for immunofluorescent staining and flow cytometric analysis to identify CTLA-4-producing cells within mixed cell populations.

Note: For testing human soluble CTLA-4 in serum, plasma or cell culture supernatant, LEGEND MAX™ Human Soluble CTLA-4 ELISA Kit with Pre-coated Plates (Cat. No. 437407) are specially developed and recommended.

Additional reported applications (for the relevant formats) include: Blocking of CTLA-4/B7-1 interaction and blocking of CTLA-4-mediated inhibitory function to promote T cell expansion1,2.

This clone has been tested in-house and determined to not be suitable for applications in immunohistochemistry of frozen or paraffin-embedded tissue sections (IHC-F or IHC-P).

Application References

(PubMed link indicates BioLegend citation)
  1. May K, et al. 2005. Blood 105:1114. (Block)
  2. Lute K, et al. 2005. Blood 106:3127. (Block)
RRID
AB_2562989 (BioLegend Cat. No. 349911)
AB_2562989 (BioLegend Cat. No. 349912)

Antigen Details

Structure
Ig superfamily, 33 kD
Distribution

Activated T cells and B cells

Function
Negative regulator of T cell activation
Interaction
Antigen presenting cells, such as dendritic cells
Ligand/Receptor
B7-1 (CD80), B7-2 (CD86)
Cell Type
B cells, T cells, Tregs
Biology Area
Immunology, Inhibitory Molecules
Molecular Family
CD Molecules, Immune Checkpoint Receptors
Antigen References

1. Barclay N, et al. The Leukocyte Antigen FactsBook. Academic Press Inc. San Diego.
2. Kuiper H, et al. 1995. J. Immunol. 155:1776.
3. Lindsten T, et al. 1993. J. Immunol. 151:3489.
4. Morton P, et al. 1996. J. Immunol. 156:1047.

Gene ID
1493 View all products for this Gene ID
UniProt
View information about CD152 on UniProt.org

Related FAQs

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.
Go To Top Version: 1    Revision Date: 01/23/2014

For Research Use Only. Not for diagnostic or therapeutic use.

 

This product is supplied subject to the terms and conditions, including the limited license, located at www.biolegend.com/terms) ("Terms") and may be used only as provided in the Terms. Without limiting the foregoing, BioLegend products may not be used for any Commercial Purpose as defined in the Terms, resold in any form, used in manufacturing, or reverse engineered, sequenced, or otherwise studied or used to learn its design or composition without express written approval of BioLegend. Regardless of the information given in this document, user is solely responsible for determining any license requirements necessary for user’s intended use and assumes all risk and liability arising from use of the product. BioLegend is not responsible for patent infringement or any other risks or liabilities whatsoever resulting from the use of its products.

 

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This data display is provided for general comparisons between formats.
Your actual data may vary due to variations in samples, target cells, instruments and their settings, staining conditions, and other factors.
If you need assistance with selecting the best format contact our expert technical support team.

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