Thermo Fisher Scientific CD278 (ICOS) Monoclonal Antibody (C398.4A), Functional Grade, eBioscience

Applications

Tested Dilution

Publications

Flow Cytometry (Flow)

0.25 µg/test

View 6 publications 6 publications

Functional Assay (Functional)

Assay-Dependent

-

Blocking Assay (BLOCK)

-

View 1 publication 1 publication

Product Specifications

Published species

Mouse

Host/Isotype

Armenian hamster / IgG

Recommended Isotype Control

Armenian Hamster IgG Isotype Control (eBio299Arm), Functional Grade, eBioscience™

Class

Monoclonal

Type

Antibody

Clone

C398.4A

Conjugate

Functional Grade Functional Grade Functional Grade

View additional formats

• Unconjugated
• APC
• APC-eFluor 780
• Biotin
• FITC
• PE
• PE-Cyanine5
• PE-Cyanine7
• Super Bright 436
• Request custom conjugation

Form

Liquid

Concentration

1 mg/mL

Storage conditions

4° C

Shipping conditions

Wet ice

RRID

AB_2866400

Product Specific Information

Description: The C398.4A monoclonal antibody reacts with ICOS (Inducible Costimulatory molecule), also known as H4/CRP-1/AILIM, and cross-reacts with mouse and rat ICOS. ICOS is a T cell specific activation molecule and a third member of the CD28/CTLA-4 family. A dimer of 47-57 kDa, ICOS is expressed on activated T cells, has potent costimulatory activity for T cell activation and proliferation and is required for humoral immune response. ICOS binds to its ligand on activated APC including B cells called B7h/B7RP-1, is thought to play a protective role in inflammatory autoimmune diseases and be involved in the development of Th2 cells. C398.4A is reported to display strong costimulation of proliferation of T cell clones, intermediate costimulation on activated T cells, and weak costimulation on fresh resting T cells. It is a good costimulator of IL-10 production especially from pre-activated cells that express high level of H4/ICOS. The epitope recognized by C398.4A is different from that bound by the ICOSL (i.e., C398.4A does not block binding of ICOSL).

Applications Reported: The C398.4A antibody has been reported for use in flow cytometric analysis. This has also been reported for in vitro functional assays.

Applications Tested: This C398.4A antibody has been tested by flow cytometric analysis of Con A-stimulated mouse splenocytes. This can be used at less than or equal to 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. 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

ICOS (CD278) encodes a protein that is a member of the CD28 and CTLA-4 cell-surface receptor family. It functions as a homodimer and has a crucial role in cell-cell signaling, immune responses, and the regulation of cell proliferation. ICOS has been linked to various disorders, including Immunodeficiency, Common Variable, 1 and Common Variable Immunodeficiency.

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