Biolegend, 117429, Brilliant Violet 421™ anti-mouse CD278 (ICOS) Antibody, 50μg

The 7E.17G9 antibody reacts with the 47-57 kD ICOS protein, also known as inducible costimulatory molecule, and H4. This protein is homologous to the CD28/CTLA-4 proteins. ICOS is expressed on activated T cells and a subset of thymocytes and can costimulate T cells and induce proliferation. In addition ICOS has been shown to be involved in humoral immune responses (B cell germinal center formation). The ICOS ligand, B7h/B7RP-1 and B7-H2 is constitutively expressed in B cell areas of secondary lymphoid organs and can be induced in other tissues by LPS. ICOS stimulation has been shown to potentiate TCR-mediated IL-4 and IL-10 production and has been proposed to play a role in Th2 cell development. ICOS stimulation has been shown to be involved in airway tolerance and the downregulation of pulmonary inflammation.
50μg
Verified Reactivity: Mouse
Antibody Type: Monoclonal
Host Species: Rat
Immunogen: Mouse ICOS cDNA and ICOS hexahistidine fusion protein
Formulation: Phosphate-buffered solution, pH 7.2, containing 0.09% sodium azide and BSA (origin USA)
Preparation: The antibody was purified by affinity chromatography and conjugated with Brilliant Violet 421™ under optimal conditions.
Concentration: 0.2 mg/mL
Storage & Handling: The antibody solution should be stored undiluted between 2°C and 8°C, and protected from prolonged exposure to light. Do not freeze.
Application: FC - Quality tested
Recommended Usage: Each lot of this antibody is quality control tested by immunofluorescent staining with flow cytometric analysis. For flow cytometric staining, the suggested use of this reagent is ≤ 0.5 µg per million cells in 100 µL volume. It is recommended that the reagent be titrated for optimal performance for each application. Brilliant Violet 421™ excites at 405 nm and emits at 421 nm. The standard bandpass filter 450/50 nm is recommended for detection. Brilliant Violet 421™ is a trademark of Sirigen Group Ltd. Learn more about Brilliant Violet™. This product is subject to proprietary rights of Sirigen Inc. and is made and sold under license from Sirigen Inc. The purchase of this product conveys to the buyer a non-transferable right to use the purchased product for research purposes only. This product may not be resold or incorporated in any manner into another product for resale. Any use for therapeutics or diagnostics is strictly prohibited. This product is covered by U.S. Patent(s), pending patent applications and foreign equivalents.
Excitation Laser: Violet Laser (405 nm)
Application Notes: Additional reported applications (for the relevant formats) include: blocking of ligand binding. The LEAF™ format is suggested for blocking studies.
Application References(PubMed link indicates BioLegend citation): Akbari O, et al. 2002. Nat. Med. 8:1024. Harada H, et al. 2003. J. Clin. Invest. 112:234. McAdam AJ, et al. 2000. J. Immunol. 165:5035. (FC Block) Tan SL, et al. 2006. J. Immunol. 176:2872. PubMed
RRID: AB_3097389 (BioLegend Cat. No. 117429)
Structure: CD28/CTLA-4, 47-57kD
Distribution: Activated T cells, subset of thymocytes
Function: Costimulates T cell activation, proliferation, humoral immune response
Ligand/Receptor: B7h/B7RP-1/GL-50
Cell Type: T cells, Thymocytes
Biology Area: Costimulatory Molecules, Immunology
Molecular Family: CD Molecules
Antigen References: 1. Rudd CE, et al. 2003. Nat. Rev. Immunol. 3:544. 2. McAdam AJ, et al. 2000. J. Immunol. 165:5035. 3. Mak TW, et al. 2003. Nat. Immunol. 4:765
Gene ID: 54167
UniProt: View information about CD278 on UniProt.org
Clone: 7E.17G9
Regulatory Status: RUO
Other Names: Inducible COStimulatory molecule, H4
Isotype: Rat IgG2b, κ
Q: What is the F/P ratio range of our BV421™ format antibody reagents?
A: It is lot-specific. On average it ranges between 2-4.