Thermo Fisher Scientific CD152 (CTLA-4) Monoclonal Antibody (14D3), eFluor 660, eBioscience

Applications

Tested Dilution

Publications

Immunohistochemistry (IHC)

-

View 1 publication 1 publication

Flow Cytometry (Flow)

5 µL (0.25 µg)/test

View 12 publications 12 publications

Product Specifications

Species Reactivity

Human, Rhesus monkey

Published species

Human

Host/Isotype

Mouse / IgG2a, kappa

Recommended Isotype Control

Mouse IgG2a kappa Isotype Control (eBM2a), eFluor™ 660, eBioscience™

Class

Monoclonal

Type

Antibody

Clone

14D3

Conjugate

eFluor™ 660 eFluor™ 660 eFluor™ 660

View additional formats

• Unconjugated
• APC
• APC-eFluor 780
• Biotin
• Brilliant UV 737
• Brilliant UV 805
• FITC
• Functional Grade
• PE
• PE-Cyanine7
• PE-eFluor 610
• PerCP-eFluor 710
• Request custom conjugation

Excitation/Emission Max

651/668 nm View spectra

Form

Liquid

Concentration

5 µL/Test

Purification

Affinity chromatography

Storage buffer

PBS, pH 7.2, with 0.2% BSA

Contains

0.09% sodium azide

Storage conditions

4° C, store in dark, DO NOT FREEZE!

Shipping conditions

Ambient (domestic); Wet ice (international)

RRID

AB_2574183

Product Specific Information

Description: The 14D3 monoclonal antibody reacts with human CD152, also known as cytotoxic T lymphocyte antigen-4 (CTLA-4). CTLA-4, a protein with structural similarities to CD28, is expressed on activated T cells (activated B cells may also express CTLA-4) 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 intracellular localization of a large proportion of newly synthesized CTLA-4 in response to TCR signaling.

The 14D3 antibody also recognizes rhesus monkey and has inhibitor activity.

Applications Reported: This 14D3 antibody has been reported for use in intracellular staining followed by flow cytometric analysis.

Applications Tested: This 14D3 antibody has been pre-titrated and tested by intracellular staining and flow cytometric analysis of stimulated human peripheral blood cells using the Intracellular Fixation & Permeabilization Buffer Set (Product # 88-8824-00) and protocol. Please refer to BestProtocols®: Protocol A: Two step protocol for (cytoplasmic) intracellular proteins located under the Resources Tab online. This can be used at 5 µL (0.25 µg) per test. A test is defined as the amount (µg) of antibody that will stain a cell sample in a final volume of 100 µL. Cell number should be determined empirically but can range from 10^5 to 10^8 cells/test.

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.

eFluor® 660 is a replacement for Alexa Fluor® 647. eFluor® 660 emits at 659 nm and is excited with the red laser (633 nm). Please make sure that your instrument is capable of detecting this fluorochrome.

Excitation: 633-647 nm; Emission: 668 nm; Laser: Red Laser.

Filtration: 0.2 µm post-manufacturing filtered.

Target Information

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.

For Research Use Only. Not for use in diagnostic procedures. Not for resale without express authorization.