Invitrogen™ CD152 (CTLA-4) Monoclonal Antibody (UC10-4B9), PE-eFluor™ 610, eBioscience™

Catalog No.	Quantity
50-112-4783	100 μg

Catalog No. 50-112-4783 Supplier Invitrogen™ Supplier No. 61152282

Description

Armenian Hamster Monoclonal Antibody

The UC10-4B9 monoclonal antibody reacts with mouse CD152, also known as the cytotoxic T lymphocyte antigen-4 (CTLA-4). CTLA-4, a protein with structural similarities to CD28, is expressed on activated T cells at low level and binds the B7 family members, CD80 (B7-1) and CD86 (B7-2), with higher affinity than CD28 does. CTLA-4 and CD28 appear to deliver opposing signals to T cells: while CD28 is a potent costimulator, CTLA-4 restricts the progression of T cells to an activated state by inhibiting IL-2 secretion and cellular proliferation. The cytoplasmic portion of CTLA-4 contains ER retention motifs, resulting in a large proportion of newly synthesized CTLA-4 in response to TCR signaling to be localized intracellularly. Furthermore, due to the intracellular localization of a large portion of CTLA-4, for complete detection it may be necessary to assess intracellular expression, in addition to surface expression of CTLA-4. Applications Reported: This UC10-4B9 antibody has been reported for use in flow cytometric analysis, and intracellular staining followed by flow cytometric analysis. Applications Tested: This UC10-4B9 antibody has been tested by intracellular staining and flow cytometric analysis of stimulated mouse splenocytes using the FoxP3/Transcription Factor Staining Buffer Set (Product # 00-5523-00) and protocol. Please refer to BestProtocols: Protocol B: One step protocol for (nuclear) intracellular proteins located under the Resources Tab online....

CTLA4 (Cytotoxic T-Lymphocyte Antigen 4) is a CD28-family receptor expressed on mainly CD4+ T cells. It binds the same ligands as CD28 (CD80 and CD86 on B cells and dendritic cells), but with higher affinity than CD28. However, in contrast to CD28 which enhances cell function when bound at the same time as the T cell receptor, CTLA4 inhbits the T cell and prevents it from functioning. Intracellular CTLA4 is also found in regulatory T cells and may be important to their function.

Specifications

• Antigen: CD152 (CTLA-4)
• Applications: Flow Cytometry
• Classification: Monoclonal
• Clone: UC10-4B9
• Concentration: 0.2 mg/mL
• Conjugate: PE-eFluor 610
• Formulation: PBS with 0.09% sodium azide; pH 7.2
• Gene: CTLA4
• Gene Accession No.: P09793
• Gene Alias: ALPS5; CD; CD152; CD152 antigen; CD152 isoform; CD152 protein; CD152 protein precursor; celiac disease 3; CELIAC3; Ctla4; CTLA-4; cytotoxic T lymphocyte associated antigen 4 short spliced form; cytotoxic T-lymphocyte associated protein 4; cytotoxic T-lymphocyte protein 4; cytotoxic T-lymphocyte protein 4 isoform CTLA4-TM; cytotoxic T-lymphocyte-associated antigen 4; cytotoxic T-lymphocyte-associated protein 4; cytotoxic T-lymphocyte-associated serine esterase-4; EGK_04712; GRD4; GSE; ICOS; IDDM12; insulin-dependent diabetes mellitus 12; ligand and transmembrane spliced cytotoxic T lymphocyte associated antigen 4; Ly-56; sCTLA4; soluble form; transmembrane form
• Gene Symbols: CTLA4
• Host Species: Armenian Hamster
• Purification Method: Affinity chromatography
• Quantity: 100 μg
• Regulatory Status: RUO
• Primary or Secondary: Primary
• Gene ID (Entrez): 12477
• Target Species: Mouse
• Content And Storage: 4°C, store in dark, DO NOT FREEZE!
• Product Type: Antibody
• Form: Liquid
• Isotype: IgG

Frequently Asked Questions (FAQs)

I am unable to analyze my cells stained with eFluor Organic Dyes today. What options do I have?

Our options will depend on the samples you are analyzing.

If cell viability is not critical, you can store your stained samples at 4 degrees C or on ice overnight in the dark and analyze the following day.

For samples stained with eFluor organic fluorochromes, we recommend that cells be suspended in 100 uL of Flow Cytometry Staining Buffer (Cat. No. 00-4222) and 100 uL of eBioscience IC Fixation Buffer (Cat. No. 00-8222); samples can be incubated for up to 3 days at 4 degrees C in the dark. Alternatively, the 1-step Fix/Lyse Solution (Cat. No. 00-5333) can be used. This is a great option when working with whole blood but also works for other cell types.

Can the eFluor Organic fluorochromes be used for intracellular staining?

Yes, the eFluor Organic fluorochromes can be used for intracellular staining. The eFluor organic fluorochromes maintain bright signal and require minimal changes in compensation when fixed with eBioscience IC Fixation Buffer (Cat. No. 00-8222-49) and Permeabilization Buffer (Cat. No. 00-8333-56) or 1-step Fix/Lyse Solution (Cat. No. 00-5333-54, 00-5333-57) (as compared to live cells).

What buffers are compatible with the eFluor Organic fluorochromes and eVolve QDots?

The eFluor Organic fluorochromes and eVolve QDots can be used with flow staining buffers containing PBS and protein.

What is the difference between eFluor Organic Dyes and eVolve Qdots?

The eFluor Organic Dyes (eFluor 450, APC-eFluor 780, PerCP-eFluor 710, eFluor 710) are conventional fluorochromes. In contrast, the eVolve line of products are Quantum dots.

Are the eFluor Organic Dyes photo-labile?

As with other fluorochromes, we recommend minimal exposure to light to maintain optimal signal.