Thermo Fisher Scientific CD28 Monoclonal Antibody (CD28.6), Functional Grade, eBioscience

Applications

Tested Dilution

Publications

Western Blot (WB)

Assay-Dependent

-

Flow Cytometry (Flow)

1 µg/test

View 8 publications 8 publications

Neutralization (Neu)

Assay-Dependent

View 1 publication 1 publication

Functional Assay (Functional)

Assay-Dependent

View 10 publications 10 publications

T-Cell Activation (TCA)

-

View 3 publications 3 publications

In vitro Assay (IV)

-

View 1 publication 1 publication

Miscellaneous PubMed (Misc)

-

View 2 publications 2 publications

Product Specifications

Species Reactivity

Human

Published species

Human, Mouse

Host/Isotype

Mouse / IgG2a, kappa

Recommended Isotype Control

Mouse IgG2a kappa Isotype Control (eBM2a), Functional Grade, eBioscience™

Class

Monoclonal

Type

Antibody

Clone

CD28.6

Conjugate

Functional Grade Functional Grade Functional Grade

Form

Liquid

Concentration

1 mg/mL

Purification

Affinity chromatography

Storage buffer

PBS, pH 7.2

Contains

no preservative

Storage conditions

4° C

Shipping conditions

Ambient (domestic); Wet ice (international)

RRID

AB_2865684

Product Specific Information

Description: The CD28.6 monoclonal antibody reacts with the human CD28 molecule, a 44 kDa homodimer expressed by thymocytes, mature T cells and plasma cells. CD28 is a ligand for CD80 (B7-1) and CD86 (B7-2) and is a potent costimulator of T cells. Signaling through CD28 augments IL-2 and IL-2 receptor expression as well as cytotoxicity of CD3-activated T cells. The CD28.6 antibody has been reported for use in immunoblotting (WB) and neutralization studies and costimulation in the production of IL-2.

Applications Reported: The CD28.6 antibody has been reported for use in flow cytometric analysis, and immunoblotting (WB). The recommended titer for WB is (~1 µ/mL). CD28.6 has also been reported in in vitro functional assays, both blocking and co-stimulatory activities have been reported for this clone (please see references below).

Applications Tested: TheCD28.6 antibody has been tested by flow cytometric analysis of normal human peripheral blood cells. This can be used at less than or equal to 1 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. It is recommended that the antibody be carefully titrated for optimal performance in the assay of interest.

Storage and handling: Use in a sterile environment.

Filtration: 0.2 µm post-manufacturing filtered.

Purity: Greater than 90%, as determined by SDS-PAGE.

Endotoxin Level: Less than 0.001 ng/µg antibody, as determined by LAL assay.

Aggregation: Less than 10%, as determined by HPLC.

Target Information

CD28 antigen is a 44 kDa disulfide linked homodimeric T cell specific surface glycoprotein. CD28 is a cell adhesion molecule of the immunoglobulin superfamily which is constitutively expressed on most peripheral blood T lymphocytes. Moreover, CD28 is the critical T cell costimulatory receptor that provides the cell the important second activation signal by binding CD80 and CD86 which are expressed by antigen presenting cells. In addition to its co-stimulation role, CD28 functions by preventing T cells from entering an anergic-hyporesponsive state or from undergoing premature apoptotic cell death. In murine peripheral lymphoid organs and in the blood, all CD4+ and CD8+ T cells express CD28. In the thymus, CD28 expression is highest on immature CD3-, CD8+ and CD4+8+ cells, and on CD4-8- cells that express alpha/beta and gamma/delta TCR. The level of CD28 on mature CD4+ and CD8+ alpha/beta TCR+ thymocytes is two- to fourfold lower than on the immature cells. Diseases associated with CD28 dysfunction include mycosis fungiodes and Sezary`s Disease.

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