CD278 (ICOS) Monoclonal Antibody (ISA-3), PE-Cyanine7, eBioscience™, Invitrogen™

Mouse Monoclonal Antibody

Supplier:  Invitrogen 25994842

Catalog No. 50-156-28

Description

Description: The ISA-3 monoclonal antibody reacts with human ICOS (Inducible COStimulatory molecule), also known as H4, CRP-1 and AILIM. ICOS is a T cell specific activation molecule and a third member of the CD28/CTLA-4 family. Human ICOS has a relative molecular mass of 55-60 kDa, composed of 27 kDa and 29 kDa chains. Human ICOS on activated T cells has potent costimulatory activity for T cell activation and is required for humoral immune responses, in particular for memory B cell and plasma cell generation. ICOS binds to its ligand, B7h/B7RP-1 expressed on activated APCs (antigen presenting cells) and on a number of inflamed peripheral tissues. Plate-bound ISA-3 is costimulatory for T cells and induces production of IL-4, IL-5, IL-10 and other cytokines, but not IL-2. ISA-3 has the same reactivity pattern and characteristics as F44. ISA-3 was generated against the human ICOS antigen. C398.4A, anti-mouse ICOS/H4 (catalog No. 14-9949-82), was shown to cross-react with human ICOS but binds to an epitope different from ISA-3. C398.4A stains activated cells brighter than ISA-3; however, it also exhibits higher staining of non-activated human peripheral blood or isolated PBMC. To achieve the brightest staining of ICOS on activated human T cells, please use 13-9948-82 or 12-9948-42 rather than 11-9948-42. Applications Reported: This ISA-3 antibody has been reported for use in flow cytometric analysis.

Applications Tested: This ISA-3 antibody has been pre-titrated and tested by flow cytometric analysis of stimulated normal human peripheral blood cells. This can be used at 5 µL (0.125 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. Light sensitivity: This tandem dye is sensitive photo-induced oxidation. Please protect this vial and stained samples from light. Fixation: Samples can be stored in IC Fixation Buffer (cat. 00-8222) (100 µL cell sample + 100 µL IC Fixation Buffer) or 1-step Fix/Lyse Solution (cat. 00-5333) for up to 3 days in the dark at 4°C with minimal impact on brightness and FRET efficiency/compensation. Some generalizations regarding fluorophore performance after fixation can be made, but clone specific performance should be determined empirically. Excitation: 488-561 nm; Emission: 775 nm; Laser: Blue Laser, Green Laser, Yellow-Green Laser. Filtration: 0.2 μm post-manufacturing filtered. CD278 belongs to the CD28 and CTLA-4 cell-surface receptor family and is highly expressed in activated T-cells. It is essential both for efficient interaction between T and B-cells and for normal antibody responses to T-cell dependent antigens. It enhances all basic T-cell responses to a foreign antigen, namely proliferation, secretion of lymphokines, up-regulation of molecules that mediate cell-cell interaction, and effective help for antibody secretion by B-cells.

Specifications

• Antigen: CD278 (ICOS)
• Classification: Monoclonal
• Concentration: 5 μL/Test
• Formulation: PBS with 0.1% gelatin, 0.2% BSA and 0.09% sodium azide; pH 7.2
• Gene Accession No.: Q9Y6W8
• Gene Symbols: ICOS
• Purification Method: Affinity chromatography
• Regulatory Status: RUO
• Gene ID (Entrez): 29851
• Content And Storage: 4° C, store in dark, DO NOT FREEZE!
• Form: Liquid

• Applications: Flow Cytometry
• Clone: ISA-3
• Conjugate: PE-Cyanine7
• Gene: ICOS
• Gene Alias: AILIM, CD278, CVID1, activation-inducible lymphocyte immunomediatory molecule, inducible T-cell costimulator, inducible costimulator
• Host Species: Mouse
• Quantity: 100 Tests
• Primary or Secondary: Primary
• Target Species: Human
• Product Type: Antibody
• Isotype: IgG1 κ

For Research Use Only.